Profile

Nestor Cohenca, DDS

Nestor Cohenca, DDS

Dentistry

On staff since June 2008

Children's Title: Director of Endodontics and Traumatology, The Center for Pediatric Dentistry, University of Washington School of Dentistry and Seattle Children's Hospital

Academic Title: Professor, Department of Endodontics; Adjunct Professor, Department of Pediatric Dentistry

  • Dr. Cohenca received his dental degree from the National University of Asuncion, Paraguay. In 1994, he completed the endodontic program at the Hebrew University in Jerusalem cum laude and received the Ino Sciaky Best Graduate Student Award. He then served 11 years on faculty at the school while maintaining a private practice limited to endodontics. He is a Diplomate of and was an examiner for the Israel Board of Endodontics and past-president of the Israel Endodontic Society. From 2003 to 2005 he served as a clinical assistant professor and coordinator of Trauma and Sports Dentistry at University of Southern California. Thereafter, Dr. Cohenca joined the University of Washington where he completed his endodontic certificate in 2008 and is currently a Professor of Endodontics and Adjunct Professor of Pediatric Dentistry. He serves as Director of Endodontics and Traumatology at the Center for Pediatric Dentistry and Seattle Childrens Hospital. In 2010, Dr. Cohenca became a Diplomate of the American Board of Endodontics and received an honorary membership to Omicron Kappa Upsilon National Dental Honor Society. As a full-time faculty member, he is active in research, teaching and lectures both national and internationally. He has published more than 60 peer-reviewed articles and serves as Associate Editor of the Dental Traumatology Journal and Board Director of the International Association of Dental Traumatology. Dr. Cohenca was one of the pioneers in the use of Cone Beam Computed Tomography in Endodontics and is considered one of the experts on this field. He is also an Adjunct Professor of Pediatric Dentistry with a strong background in Dental Traumatology and Endo-Pedo related topics. Dr Cohenca is fluent in Spanish, Portuguese and Hebrew. Dr. Cohenca maintains a private practice limited to Endodontics in Bellevue, WA.

    CURRICULUM VITAE

    PRESENT POSITION
    - Dental Surgeon (DDS) 1990
    - Specialist in Endodontics 1994, 2008
    - Diplomate, Israeli Board of Endodontics and Israel Ministry of Health (1995)
    - Diplomate, American Board of Endodontics (2010)
    - Tenured Professor. Department of Endodontics. School of Dentistry.
    University of Washington.
    - Adjunct Professor. Department of Pediatric Dentistry. School of Dentistry.
    University of Washington.
    - Director of Endodontics and Traumatology. The Center for Pediatric Dentistry.
    University of Washington School of Dentistry and Seattle Childrens Hospital.
    - Director of the Multidisciplinary Trauma Unit. School of Dentistry.
    University of Washington.
    - Associate Endodontist. Redmond Endodontics. Bellevue WA.


    PROFESSIONAL CERTIFICATIONS
    1986 - 1990 Dental Studies, National University of Asuncion, Paraguay. Licensed
    1991 Dental Licensed. Israel Dental Association and Israel Ministry of
    Health.
    1991 - 1994 Postgraduate Specialty Program in Endodontics, Department of Endodontics, HUHFDM, Jerusalem, Israel.
    1995 Diplomate, Israel Board of Endodontics and Israel Ministry of
    Health.
    2003- ProCPR Certified for Health Care Providers (CPR annual re-certification).
    2004 Problem Based Learning (PBL) Certified. USC School of Dentistry. CA.
    2004 HIPPA Compliance Certified. USC School of Dentistry. CA.
    2005 - Blood Born Pathogen training. Annual re-certification. UW School of Dentistry. WA.
    2007 National Board Certification (part 1 and 2). American Dental Association.
    2007 Summer Institute for Clinical Research. University of Washington. WA.
    2006 - 2008 Postgraduate Specialty Program in Endodontics, Department of Endodontics, School of Dentistry, University of Washington. Seattle, WA. USA.
    2008 HIPPA Compliance Certified. University of Washington, WA
    2008 Western Regional Examination Boards (WREB)
    2008 Dental License. WA State. USA
    2010 Diplomate, American Board of Endodontics
    2013 Certification in Oral Conscious Sedation and Nitrous Oxide


    HOSPITAL APPOINTMENTS AND PRIVILEDGES
    Hadassah Medical Center Attending 1994-2003
    UW Medical Center Attending 2005 present
    UW Childrens Attending 2008- present




    LANGUAGES
    1. Spanish
    2. English
    3. Hebrew
    4. Portuguese


    ACADEMIC ACTIVITIES
    1996 - 2000 Clinical Instructor in Endodontics, HUHFDM, Jerusalem, Israel.
    1996 - 2003 Co-Director of Graduate Endodontics, HUHFDM, Jerusalem, Israel.
    1998 - 2001 Director of the Preclinical Endodontic Course.
    2000 - 2005 Clinical Lecturer in Endodontics, HUHFDM, Jerusalem, Israel.
    2002 - 2003 Director of the Clinical Endodontic - Undergraduate Course
    2003 - 2005 Assistant Professor of Clinical Dentistry. Division of Surgical,
    Therapeutic & Bioengineering Sciences. School of Dentistry. University
    of Southern California.
    2003 - 2005 Coordinator of Trauma at the Center for Urgent Care, Trauma and Sport Dentistry at the USC School of Dentistry.


    ACADEMIC ACTIVITIES. UNIVERSITY OF WASHINGTON
    2005 - Pre-Clinical Endodontics (ENDO 630A). School of Dentistry.
    University of Washington.
    2005 - Pre-Clinical Endodontics (ENDO 630B). School of Dentistry.
    University of Washington.
    2005 - Clinical Endodontics (ENDO 660A). School of Dentistry.
    University of Washington.
    2007 - 2008 Co-Director of Undergraduate Clinical Endodontics (Endo 534). School of Dentistry. University of Washington.
    2007 - 2008 Co-Director of Undergraduate Clinical Endodontics (Endo 535). School of Dentistry. University of Washington.
    2008 - 2013 Director of Undergraduate Clinical Endodontics (Endo 535). School of Dentistry. University of Washington.
    2008 - Clinical Endodontics (Endo 534). School of Dentistry.
    University of Washington.
    2008 - Director of Dental Traumatology Course (Pedo 671). Center for Pediatric Dentistry. School of Dentistry. University of Washington.
    2008 Introduction to Dentistry (Dent 610). School of Dentistry.
    University of Washington.
    2009 - Advanced Education in Pediatric Dentistry. Pulp Therapy. Center for Pediatric Dentistry. School of Dentistry. University of Washington.
    2010- Hospital Pediatric Dentistry (PEDO 671A). School of Dentistry.
    University of Washington.
    2011 - Mixed Dentition/Public Health Seminar (Ortho 575). School of Dentistry. University of Washington.
    2014 - Director of the Multidisciplinary Trauma Unit. School of Dentistry.
    University of Washington.


    SERVICE. UNIVERSITY OF WASHINGTON
    2006 - 2007 Compliance Task Force Committee. School of Dentistry.
    University of Washington.
    2006 - 2007 Roosevelt Committee. School of Dentistry. University of Washington.
    2005 - 2007 Faculty Practice Board Committee. School of Dentistry.
    University of Washington.
    2007 - 2009 Chair. Faculty Practice Board Committee. School of Dentistry.
    University of Washington.
    2008 2010 Patient Care Committee -Standard 5. School of Dentistry.
    University of Washington.
    2008 - Instructional Resources Committee. School of Dentistry.
    University of Washington.
    2009 - 2012 Faculty Practice Board Committee. School of Dentistry.
    University of Washington.
    2009 - 2010 Chair. Organizational Development Task Force. School of Dentistry. University of Washington.
    2012 - Appointment, Promotion and Tenure Committee. School of Dentistry. University of Washington.

    2012- Clinical Systems Taskforce. School of Dentistry. University of Washington.


    PROMOTIONS. UNIVERSITY OF WASHINGTON
    2005 - 2008 Clinical Assistant Professor. Department of Endodontics.
    School of Dentistry. University of Washington.
    2008 - 2009 Assistant Professor (with Tenure). Department of Endodontics.
    School of Dentistry. University of Washington.
    2009 -2013 Associate Professor (with Tenure). Department of Endodontics.
    School of Dentistry. University of Washington.
    2011 - Director of Endodontics and Traumatology. The Center for Pediatric Dentistry. University of Washington School of Dentistry and Seattle Childrens Hospital. University of Washington.
    2013 Professor (with Tenure). Department of Endodontics. School of Dentistry. University of Washington.
    2013 Adjunct Professor (with Tenure). Department of Pediatric Dentistry. School of Dentistry. University of Washington.


    AWARDS
    1992 Excelling Teacher, HUHFDM, Jerusalem, Israel.
    1993 Excelling Teacher, HUHFDM, Jerusalem, Israel.
    1995 Ino Sciaky Best Graduate Student Award for achievements in
    The Postgraduate Specialty program at the HUHFDM, Jerusalem, Israel
    1999 Excelling Teacher, HUHFDM, Jerusalem, Israel.
    2000 Excelling Teacher, HUHFDM, Jerusalem, Israel.
    2001 Excelling Teacher, HUHFDM, Jerusalem, Israel.
    2002 Excelling Teacher, HUHFDM, Jerusalem, Israel.
    2005 Faculty Appreciation Award. School of Dentistry. University of Southern
    California, USA.
    2006 Dentsply Award for Clinical Table. 2006 Annual Meeting of the American Association of Endodontists (AAE). Honolulu, Hawaii, USA.
    2007 Gold Medal Award for Academic achievements and contributions to Endodontics. Sociedad Paraguaya de Endodoncia.
    2011 Dentsply Award for Research Poster. 2011 Annual Meeting of the American Association of Endodontists (AAE). San Antonio, TX, USA.
    Evaluation of splint flexibility and tooth mobility after avulsion injuries using a cadaveric model. Kwan, Johnson and Cohenca.
    2011 Honorary Membership to Omicron Kappa Upsilon National Dental Honor Society.


    RESEARCH GRANTS FUNDED
    1999 The Hebrew University Hadassah Joint Research Grant $ 2000
    2000 The Hebrew University Hadassah Joint Research Grant $ 3200
    2001 Hadassah Medical Center Young Researchers Grant $ 5000
    2002 International Federation of Endodontic Association $1,000
    2006 American Association of Endodontists Foundation $10,500
    Affiliate investigator. "Development of an ex-vivo model for quantification of root canal bacteria during endodontic treatment". PI: Dr. Gaelle Villette. University of Toronto.
    2007 Discus Dental. "Antimicrobial efficacy of two irrigation $36,500
    techniques in tapered versus non-tapered canal preparation.
    An in vivo clinical study"
    2007 Discus Dental. "Antimicrobial efficacy of two irrigation $5,245
    techniques in tapered versus non-tapered canal preparation. A preliminary in vitro study"
    2007 Discus Dental. "Cleaning efficacy of the Endo-Vac negative $4,262
    pressure irrigation system at different exposure times. In vitro"
    2008 Discus Dental. "Efficacy of positive and negative pressure $20,721
    irrigation on the disinfection of apical root canal system of
    human mandibular molars with primary apical periodontitis.
    A microbiological in vivo study"
    2008 Discus Dental. "Root canal disinfection and pulp $22,963
    revascularization of immature dog teeth with periradicular
    periodontitis"
    2010 ReDent. "Antimicrobial efficacy of a 3-D self adjusting file $7,850
    (SAF) in oval-shaped canal configuration. A preliminary in vitro
    study"


    RESEARCH GRANTS NOT FUNDED
    2003 American Association of Endodontists Foundation $11,450
    Affiliate investigator. "Effect of sodium hypochlorite, EDTA
    and urea peroxide on the chemical structure and surface
    morphology of MTA, Super EBA, IRM and Glass Ionomer
    cements in vitro".
    2003 American Association of Endodontists Foundation $32,100
    Principal investigator "The role of enamel matrix proteins in
    tissue regeneration following replantation of teeth in a rat model".
    2004 American Association of Endodontists Foundation $59,290
    Principal investigator "Prognosis of avulsed human teeth
    treated with Emdogain before replantation".
    2005 American Association of Endodontists Foundation $14,400
    Co-investigator "Antibacterial efficacy of a final rinse
    with MTAD in teeth with apical periodontitis.
    An ex-vivo multi-center study"
    2007 Vista Dental. Co-investigator "Efficacy of an intracoronal $5,442
    antibacterial barrier to prevent coronal leakage and
    recontamination in vitro"


    PROFESSIONAL ACTIVITIES
    1997 2000 Treasurer, Alpha Omega Dental Fraternity, Jerusalem Chapter.
    1998 2000 Treasurer, The Israel Endodontic Society.
    2000 2002 Secretary, The Israel Endodontic Society.
    2002 2004 Vice President, The Israel Endodontic Society.
    2004 2005 President, The Israel Endodontic Society.
    2000 - 2005 Member, National Board of Examiners in Endodontics.
    The Scientific Council of the Israel Dental Association.
    2008- Member of Editorial Board. Journal of Dental Traumatology.
    2008- Member of Editorial Board. Journal Clnica e Pesquisa em Odontologia (CLIPE)-UNITAU, Brazil.
    2009- Associate Editor. Journal of Dental Traumatology.
    2009 Guest Editor for special issue in "Contemporary Endodontics". International Journal of Dentistry.
    2008- Scientific Reviewer. International Journal of Oral & Maxillofacial Implants
    2009- Scientific Advisory Board. Journal of Endodontics
    2012- Director and Board Member. International Association of Dental Trauma.
    2012-2013 Imaging Track Chair. Annual Meeting 2013. American Association of Endodontics
    2012-2013 Member. Trauma Committee for new guidelines. American Association of Endodontics
    2012- Scientific Advisory Board. Journal of Medicina Oral, Patologia Oral, Cirugia Bucal
    2012- Scientific Advisory Board. Journal of Clinical and Experimental Dentistry.
    2012- Chair. IADT Sponsorship Committee.
    2012- Chair. IADT Education Committee.

    PROFESSIONAL MEMBERSHIPS
    1. American Association of Endodontists (AAE)
    2. College of Diplomates of the American Board of Endodontists.
    3. American Dental Association (ADA)
    4. American Dental Education Association (ADEA).
    5. European Society of Endodontology (ESE).
    6. International Federation of Endodontics Associations (IFEA).
    7. International Association of Dental Trauma (IADT)
    8. Israel Endodontic Society (IES).
    9. Alpha Omega Fraternity (AO).
    10. Washington State Dental Association (WSDA).
    11. Washington State Association of Endodontists (WSAE).
    12. Honorary membership Sociedad Paraguaya de Endodoncia (SPE).
    13. Omicron Kappa Upsilon National Dental Honor Society (OKU).


    ADVISER & INSTRUCTOR OF D.M.D. THESES
    Student's name: Teperovich Ehud
    Thesis topic: Effect of gutta-percha solvents on micro hardness of
    Human enamel and dentin.
    Published: 1999


    ADVISER & INSTRUCTOR OF M.S.D. THESES
    Student's name: Guzman Martinez Nayelli
    Thesis topic: Effect of Emdogain application with and without EDTA preconditioning for prevention of Replacement Root Resorption in dogs.
    Published: Dent Traumatol 2009 Feb;25:43-50.

    Student's name: Mullally Patrick
    Thesis topic: Efficacy Profile and ProTaper retreatment files on removal Thermafil carriers. An in vitro study.
    Published: Completed.

    Student's name: Hockett Jeff
    Thesis topic: Antimicrobial efficacy of two irrigation techniques in tapered versus non-tapered canal preparation. An in vitro study.
    Published: J Endod;34:1374-1377.

    Student's name: Brunson Matthew
    Thesis topic: The effect of apical size and taper on the volume of irrigant aspirated at working length when using negative pressure irrigation
    Published: J Endod 2010 Apr;36(4):721-4.

    Student's name: Reynolds Kai
    Thesis topic: Cleaning efficacy of the Endo-Vac negative pressure irrigation system at different exposure times. In vitro
    Published: Quintessence Int. 2010;41:759-67.

    Student's name: Marcello Michael
    Thesis topic: Effective removal of CaOH from canals comparing positive vs. negative irrigation measured with microCT.
    Published: Completed. In writing.

    Student's name: Cesar de Gregorio
    Thesis topic: Efficacy of different irrigation and activation systems on the penetration of sodium hypochlorite into simulated lateral canals and up to working length. An in vitro study.
    Published: Completed. J Endod 2010;36:12161221.

    Student's name: Anne Wiseman
    Thesis topic: Efficiency of removal of CaOH2 following sonic vs. ultrasonic instrumentation with positive pressure irrigation system: a micro-tomographic study
    Published: Completed. J Endod 2011;37:235238.

    Student's name: Mortenson David
    Thesis topic: The effect of intermittent solutions between sodium hypochlorite and chlorhexidine to prevent the formation of para-chloroaniline (PCA) within the root canal system: A mass spectrometry study.
    Published: Completed. Int Endod J 2012;45:878882.


    Student's name: Gatten Dustin
    Thesis topic: Quality of life of endodontically treated versus implant treated patients. A university-based qualitative research study.
    Published: Completed. J Endod 2011;37:903909.

    Student's name: Oliver Valencia de Pablo
    Thesis topic: Root anatomy and canal configuration of the permanent mandibular first molar: A Systematic Review.
    Published: Completed. J Endod 2010;36:1919-1931.

    Student's name: Kwan Steven
    Thesis topic: Evaluation of splint flexibility and tooth mobility after avulsion injuries using a cadaveric model.
    Published: Completed. Dent Traumatol 2012;28:277281.

    Student's name: Fergus Duddy
    Thesis topic: Influence of different types of mouthguards on strength and performance of college athletes.
    Published: Completed. Dent Traumatol 2012;28:263267.


    Student's name: Joao Barbizam
    Thesis topic: Histological evaluation of the effects of variable extraoral dry times and Enamel Matrix Proteins (EMD) application on replanted dogs teeth.
    Published: Completed. Submitted for Publication


    Student's name: Jake Weissman
    Thesis topic: Correlation between the Presence of Periapical Lesions and Symptoms in Endodontic Patients using Cone-Beam Computed Tomography and Periapical Radiographs.
    Published: Completed. In writing



    CLINICAL PRACTICE

    October 1991 to June 2003 Hadassah School of Dentistry, Jerusalem, Israel (Part time)
    October 1991 to June 2003 Private Practice, Owner. Jerusalem, Israel
    July 2003 to June 2005 Oral Health Center. University of Southern California (USC), Los Angeles, CA
    July 2005 to June 2009 UW Dentist Faculty Practice. University of Washington. Seattle, WA
    April 2009 to April 2011 Bellevue Endodontic Associates. Bellevue, WA
    May 2011 to October 2013 Redmond Endodontics. Redmond, WA
    Nov 2013 - Pacific Northwest Endodontic


    BOOKS
    1. Disinfection of Root Canal Systems: The Treatment of Periradicular Periodontitis. Editor: Nestor Cohenca. In press and scheduled to get published on May-June 2014.

    2. Cone Beam Computed Tomography in Endodontics.
    Editor: Nestor Cohenca and Shanon Patel. In writing


    CHAPTERS
    1. Cohenca N. Radiographic interpretation traumatic injuries and root resorptions. In Radiology in Endodontics, 2nd Edition. Bettina Basrani, Editor. 2012

    2. Heilborn C, Capelli A, Cohenca N. Irrigacin de los conductos radiculares. In Endodontia. Uma Visao Contemporanea. Eduardo Fregnani and Ruy Hizatugo, Editors. 2012.

    3. Cohenca N. Management of Traumatic Dental Injuries. In Endodontics: Principles and Practice. Editors Torabinejad M & Walton RE. In press.

    4. Cohenca N. Root canal infection and endodontic disease. In Disinfection of Root Canal Systems: The Treatment of Periradicular Periodontitis. Editor: Cohenca N. In press

    5. de Gregorio, Estevez, Cohenca N. Positive pressure irrigation. In Disinfection of Root Canal Systems: The Treatment of Periradicular Periodontitis. Editor: Cohenca N. In press

    6. Cohenca N, Paranjpe A. Apical negative pressure irrigation. In Disinfection of Root Canal Systems: The Treatment of Periradicular Periodontitis. Editor: Cohenca N In press

    7. da Silva, Nelson, Cohenca N. Intracanal medication in root canal disinfection. In Disinfection of Root Canal Systems: The Treatment of Periradicular Periodontitis. Editor: Cohenca N In press

    8. Kishen A, Cohenca N. Emerging technologies in root canal disinfection. In Disinfection of Root Canal Systems: The Treatment of Periradicular Periodontitis. Editor: Cohenca N In press.


    9. Cohenca N, Barbizam J. Surgical applications of CBCT. In CBCT in Endodontics. Editor: Shanon Patel. In writing.

    10. Cohenca N, Silberman A. CBCT applications in Dental Traumatology. In CBCT in Endodontics. Editor: Shanon Patel. In writing.














    LIST OF PUBLICATIONS

    Peer-reviewed

    1. Rotstein I, Cohenca N, Mor C, Moshonov J, Stabholz A. Effect of carbamide peroxide and hydrogen peroxide on the surface morphology and zinc oxide levels of IRM fillings. Endod Dent Traumatol 1995; 11: 279-283.

    2. Cohenca N, Karni S, Heling I, Rotstein I. Endodontic retreatment of unusually long maxillary central incisors. J Endod 1996; 22: 269-271.

    3. Cohenca N, Rotstein I. Mental paresthesia associated with a non vital tooth. Endod Dent Traumatol 1996; 12: 298-300.

    4. Cohenca N, Rotstein I. Diagnosis and treatment of external root resorption in traumatized teeth. A case report. Refuat Hapeh Vehashinayim 1997; 14: 59-62. (In Hebrew).

    5. Rotstein I, Moshonov J, Cohenca N. Endodontic therapy for a fused mandibular molar. Endod Dent Traumatol 1997; 13: 149-151.

    6. Moshonov J. Sion A, Cohenca N. Lasers in dentistry: Endodontics. Refuat Hapeh Vehashinayim 1998; 15: 43-49. (In Hebrew).

    7. Rotstein I, Cohenca N, Teperovich E, Moshonov J, Mor C, Roman I, Gedalia I. Effect of chloroform, xylene, and halothene on enamel and dentin microhardness of human teeth. Oral Surg Oral Med Oral Pathol Oral Radiol Endod 1999; 87: 366-8.

    8. Rotstein I, Cohenca N. Clinical Considerations and guidelines for treatment of replanted avulsed teeth. Refuat Hapeh Vehashinayim 1999; 16:15-21. (In Hebrew).

    9. Moshonov J, Peretz B, Ben Zvi K, Cohenca N, Rotstein I. Effect of guttapercha solvents on surface microhardness of IRM fillings. J Endod 2000; 26: 142-3.

    10. Cohenca N, Karni S. Rotstein I. Transient apical breakdown following tooth luxation. Dent Traumatol 2003;19:289-291.

    11. Cohenca N, Ram D. Avulsion de dientes permanentes. Protocolos terapeuticos actuales. Quintessence 2003;16: 512-7. (In Spanish)

    12. Cohenca N, Karni S. Rotstein I. Extraoral sinus tract misdiagnosed as endodontic lesion. J Endod 2003; 29: 841-843.

    13. Ram D, Cohenca N. Avulsion of Permanent Teeth. Review and Clinical Update of Therapeutic Protocols. Pediatr Dent 2004; 26:251-5. Review.

    14. Cohenca N, Karni S, Eidlitz D, Nuni E, Moshonov J. New treatment protocols for avulsed teeth. Refuat Hapeh Vehashinayim 2004;21:48-53, 98. (In Hebrew).

    15. Silberman A, Cohenca N, Simon JH. Anatomic redesign for the treatment of dens invaginatus type III with open apices: Literature review and case presentation. JADA 2006;137:180-5.

    16. Cohenca N, Forrest JL, Rotstein I. Knowledge of oral health professionals of treatment of avulsed teeth. Dent Traumatol 2006;22(6):296-301.

    17. Holan G, Cohenca N, Brin I, Sgan-Cohen H. An oral health promotion program for the prevention of complications following avulsion: the effect on knowledge of physical education teachers. Dent Traumatol 2006;22(6):323-7.

    18. Patel R, Cohenca N. Maturogenesis of a cariously exposed immature permanent tooth using MTA for direct pulp capping: A Case report. Dent Traumatol 2006;22(6):328-33.

    19. Cohenca N, Stabholz A. Decoronation a conservative method to treat ankylosed teeth for preservation of alveolar ridge prior to permanent prosthetic reconstruction: Literature review and case presentation. Dent Traumatol 2007;23(2):87-94.

    20. Cohenca N, Simon JH, Roges R, Morag Y, Malfaz JM. Clinical indications for digital imaging in dento-alveolar trauma. Part 1: Traumatic Injuries. Dent Traumatol 2007;23(2):95-104.

    21. Cohenca N, Simon JH, Mathur A, Malfaz JM. Clinical indications for digital imaging in dento-alveolar trauma. Part 2: Root resorption. Dent Traumatol 2007;23(2):105-113.

    22. Cohenca N, Roges RA, Roges R. Dental and maxillo-facial injuries in college athletes. A 10-year retrospective study. JADA 2007;138(8):1121-6.

    23. Lin S, Cohenca N, Muska EA, Front E. (2008) Ridge preservation in cases requiring tooth extraction during endodontic surgery. A case report. Int Endod J 2008;41:448-455.
    24. Hockett J, Dommisch JK, Johnson JD, Cohenca N. Antimicrobial efficacy of two irrigation techniques in tapered versus non-tapered canal preparations. An in vitro study. J Endod 2008;34:1374-1377.

    25. Reynolds K, Johnson JD, Cohenca N. Pulp revascularization of necrotic bilateral bicuspids using a modified novel technique. A case report. Int Endod J 2009;42:84-92.

    26. Guzman Martinez N, Herzog-Silva D, Mendez Gonzalez V, Martin-Perez S, Cerda-Cristerna BI, Cohenca N. The effect of Emdogain and 24% EDTA root conditioning on periodontal healing of replanted dogs teeth. Dent Traumatol 2009 Feb;25:43-50.

    27. Silberman A, Heilborn C, Cohenca N. Endodontic therapy of a mandibular third molar with five canals. A case report. Quintessence Int 2009 June;40:453-455.

    28. de Gregorio C, Estevez R, Cisneros R, Heilborn C, Cohenca N. Effect of EDTA, Sonic, and Ultrasonic Activation on the Penetration of Sodium Hypochlorite into Simulated Lateral Canals: An In Vitro Study. J Endod 2009 June;35:891-5.

    29. Cohenca N, Heilborn C, Johnson JD, Herzog-Silva D, da Silva Bezerra AL. Effect of apical negative pressure irrigation and tri-antibiotic intracanal medication on root canal disinfection in immature dogs teeth with apical periodontitis. Oral Surg Oral Med Oral Pathol Oral Radiol Endod 2010;109:e42-e46.

    30. Brunson M, Heilborn C, Johnson JD, Cohenca N. The effect of apical preparation size and taper on irrigant delivery using the EndoVac negative pressure irrigation system. J Endod. 2010 Apr;36(4):721-4.

    31. da Silva Bezerra AL, Nelson-Filho P, da Silva AR, Herzog-Silva D, Heilborn C, Johnson JD , Cohenca N. Revascularization and periapical repair after endodontic treatment using apical negative pressure irrigation versus conventional irrigation plus triantibiotic intracanal dressing in dogs' teeth with apical periodontitis. Oral Surg Oral Med Oral Pathol Oral Radiol Endod. 2010 May;109(5):779-87.

    32. de Gregorio C, Estevez R, Cisneros R, Paranjpe A, Cohenca N. Efficacy of different irrigation and activation systems on the penetration of sodium hypochlorite into simulated lateral canals and up to working length. An in vitro study. J Endod
    2010;36:12161221.

    33. Heilborn C, Reynolds K, Johnson JD, Cohenca N. Cleaning efficacy of the Endo-Vac negative pressure irrigation system at different exposure times. Quintessence Int 2010;41:759-67.

    34. Valencia de Pablo O, Estevez R, Heilborn C, Cohenca N. Root anatomy and canal configuration of the permanent mandibular first molar: A Systematic Review. J Endod 2010;36:1919-1931.

    35. Wiseman A, Cox T, Paranjpe A, Flake N, Cohenca N, Johnson JD. Efficacy of sonic and ultrasonic activation for removal of calcium hydroxide from mesial canals of mandibular molars: a micro-tomographic study. J Endod 2011;37:235238.

    36. Gatten D, Riedy C, Song J, Johnson JD, Cohenca N. Quality of life of endodontically treated versus implant treated patients. A university-based qualitative research study. J Endod 2011;37:903909.

    37. Valencia de Pablo, O, Estevez R, Heilborn C, Cohenca N. Root anatomy and canal configuration of the permanent mandibular first molar. Clinical implications and recommendations. Quintessence Int 2012:43:15-27.

    38. Paranjpe A, de Gregorio C, Gonzalez AM, Gomez A, Silva Herzog D, Aragon Pia A, Cohenca N. Efficacy of the Self Adjusting File (SAF) system on cleaning and shaping oval-shaped canals. A microbiology and microscopic evaluation. J Endod 2012;38:226231.

    39. de Gregorio C, Paranjpe A, Garca Vargas A, Navarrete Marabini N, Estevez R, Oltra Esplugues E, Cohenca N. Efficacy of irrigation systems on penetration of sodium hypochlorite to working length and simulated uninstrumented areas in oval-shaped root canals. Int Endod J 2012;45:475481.

    40. Malmgren B, Andreasen JO, Flores MT, Robertson A, Diangelis AJ, Andersson L, Cavalleri G, Cohenca N, Day P, Hicks ML, Malmgren O, Moule AJ, Onetto J, Tsukiboshi M. International Association of Dental Traumatology guidelines for the management of traumatic dental injuries: 3. Injuries in the primary dentition. Dent Traumatol. 2012;28:174-82.

    41. Duddy FB, Weissman J, Lee RA, Paranjpe A, Johnson JD, Cohenca N. Influence of different types of mouthguards on strength and performance of collegiate athletes. A controlled-randomized trial. Dent Traumatol 2012;28:263267.

    42. Kwan SC, Johnson JD, Cohenca N. The effect of splint material and thickness on tooth mobility after extraction and replantation using a human cadaveric model. Dent Traumatol 2012;28:277281.

    43. Mortenson D, Sadilek M, Flake NM, Paranjpe A, Heling I, Johnson JD, Cohenca N. The effect of using an alternative irrigant between sodium hypochlorite and chlorhexidine to prevent the formation of para-chloroaniline within the root canal system. Int Endod J 2012;45:878882.

    44. Merino A, Estevez R, de Gregorio C, Cohenca N. The effect of different taper preparations on the ability of sonic and passive ultrasonic irrigation to reach the working length in curved canals. Int Endod J 2012 Sep 11.

    45. Cohenca N, Paranjpe A, Berg J. Vital Pulp Therapy. Special Issue in Pediatric Dentistry. Dent Clin N Am 2013;57:5973.

    46. de Gregorio C, Arias A, Navarrete Marabini N, del Ro V, Oltra Esplugues E, Cohenca N. Effect of apical size and taper on volume of irrigant delivered at working length with apical negative pressure at different root curvatures. J Endod 2013;39:119124.

    47. Ha JH, Kim SK, Cohenca N, Kim HC. Effect of R-phase heat treatment on torsional resistance and cyclic fatigue fracture. J Endod. 2013 Mar;39:389-93.

    48. Cohenca N, Berg J. Diagnosis and conservative treatment of dens invaginatus type III using a three-dimensional approach. A case series. Pediatr Dent 2013;35:E33-E37.

    49. Cohenca N, Paranjpe A, Heilborn C, Johnson JD. Antimicrobial efficacy of two irrigation techniques in tapered versus non-tapered canal preparation. A randomized controlled trial. Quintessence Int. 2013;44(3):217-28.

    50. May J, Cohenca N, Peters OA. Contemporary Management of Horizontal Root Fractures to the Permanent Dentition: DiagnosisRadiologic Assessment to Include Cone-Beam Computed Tomography. J Endod 2013;39:S20S25.

    51. Ball RL, Barbizam JV, Cohenca N. Intraoperative Endodontic Applications of Cone-Beam Computed Tomography. J Endod 2013;39:548557.

    52. Silva EJNL, Nejaim Y, Silva A, Haiter-Neto F, Cohenca N. Evaluation of root canal configuration of mandibular molars in a Brazilian population using Cone Beam Computed Tomography. An in vivo study. J Endod 2013;39(7):849-852

    53. Cohenca N, Assed Bezerra Silva L, Assed Bezerra Silva R, Nelson-Filho P, Heilborn C, Evandro Watanabe E, Pereira Saraiva MC. Microbiological Evaluation of Different Irrigation Protocols on Root Canal Disinfection in Teeth with Apical Periodontitis: An In Vivo Study. Brazilian Dental Journal 2013;24(5):467-473.

    54. McRay B, Cox TC, Cohenca N, Johnson JD, Paranjpe A. A micro-computed tomography-based comparing of the canal transportation and centering ability of ProTaper universal rotary and WaveOne reciprocating files. Quintessence Int 2014:45:101-108.

    55. Silva EJNL, Nejaim Y, Silva A, Haiter-Neto F, Zaia AA, Cohenca N. Evaluation of root canal configuration of maxillary molars in a Brazilian population using Cone Beam Computed Tomography. An in vivo study. J Endod. 2013;39:849-52


    56. Cohenca N, Romualdo PC, da Silva Bezerra AL, da Silva R, Queiroz AM, de Rossi A, Nelson-Filho, P. Root canal irrigation systems: radiographic, histopathological, histomicrobiological and histoenzymological evaluation in dogs' teeth with apical periodontitis. Quintessence Int. Submitted for publication.

    57. Gomes AC, Nejaim Y, Silva A. IV, Haiter-Neto F, Zaia AA, Cohenca N, Silva E.J.N.L. Correlation between apical periodontitis and quality of root canal fillings and coronal restorations in a Brazilian population: a CBCT study. J Endod. Submitted for publication.

    58. Barbizam JV, Massarwa R, DDS1, da Silva LA, Cohenca N. Histological evaluation of the effects of variable extraoral dry times and Enamel Matrix Proteins (EMD) application on replanted dogs teeth. Dent Traumatol. Submitted for publication.

    59. Weissman, Johnson JD, Anderson M, Hollender J, Huson T, Patel S, Cohenca N. Correlation Between the Presence of Apical Periodontitis and Symptoms in Endodontic Patients Using Cone-Beam Computed Tomography and Periapical Radiographs. In writing.

    60. Ahn HJ, Kim EC, Park JH, Lee SE, Cohenca N, Choi SC. Expression of inflammatory cytokines and MMPs on the periodontal ligament of replanted teeth at different extra alveolar time. Dent Traumatol. In writing.

    61. Gonzalez AM, Corpus E, Rodrguez AC, Pozos-Guilln A, Silva Herzog D, Aragn Pia A, Cohenca N. Comparison of mature E. faecalis biofilm developed under a novel in vitro model with a biofilm of E. faecalis developed and identified in root tips associated with endodontic failure. Int Endod J. Submitted for publication.

    62. Cohenca N, Paranjpe A, Heilborn C, Johnson JD. Correlation of antimicrobial efficacy of two irrigation techniques in tapered versus non-tapered canal preparation on periradicular healing. A randomized controlled trial. In writing.



    Non Peer-Reviewed

    1. Cohenca N. Digital Radiography. Endodontic Therapy 2006. Winter;6(2):14-5.

    2. Cohenca N. Clinical applications for Cone Beam Computed Tomography (CBCT) in dentistry and dental traumatology. Practical Reviews in Pediatric Dentistry 2008;20:06.

    3. de Gregorio C, Navarrete N, Estvez Luaa R, Aranguren Cangas J, de la Torre de la Fuente F, Tejedor Bautista B, Cohenca N, Cisneros Cabello R. Penetracin real de la irrigacin en el interior de sistemas de conductos cerrados. Revista espaola de endodoncia. AEDE 2011;29(2):58-94.

    4. Cohenca N, Carrillo M. Decoronacin un mtodo conservador en el tratamiento de la anquilosis dental con nfasis en la conservacin del hueso alveolar con miras a la reconstruccin protsica permanente. Revista de Digital Odontopediatria 2011;1:9-19.

    5. Heilborn C, Valencia de Pablo, O, Estevez R, Cohenca N. Root canal anatomy of the permanent mandibular first molar. How complicated really is? Clinical implications and recommendations. Roots 2011;7:10-13.

    6. Berg J, Cohenca N. Pulp Therapy for Children. Dentaltown.com 2012;18-24.

    7. Cohenca N. CBCT helps avoid unnecessary root canal. http://www.conebeam.com/pdf/Endo-Clinical-Case-Cohenca-revised-8-8.pdf

    8. Heilborn C, Valencia de Pablo, O, Estevez R, Cohenca N. Anatomie du canal radiculaire de la premire molaire mandibulaire dfinitive Implications et recommandations cliniques (in French). Dental Tribune. Le Magazine de formation continue dentaire 2013;1:42-46.

  • Award Name Award Description Awarded By Award Date
    Honorary Membership Honorary Membership to Omicron Kappa Upsilon National Dental Honor Society. Omicron Kappa Upsilon National Dental Honor Society 2011
    Gold Medal Award Gold Medal Award for Academic achievements and contributions to Endodontics. Sociedad Paraguaya de Endodoncia. Sociedad Paraguaya de Endodoncia 2008
    Dentsply Award for Best Clinical Table Dentsply Award for Clinical Table. 2006 Annual Meeting of the American Association of Endodontists (AAE). Honolulu, Hawaii, USA. American Association of Endodontists 2006
    Dentsply Award for Best Research Poster Dentsply Award for Research Poster. 2011 Annual Meeting of the American Association of Endodontists (AAE). American Association of Endodontists 2001
    Ino Sciaky Best Graduate Student Award Award given to the best gradaute resident among all specialties within the Medical Center Hebrew IUniversity and Hadassah Medical Center
    • McRay B, Cox TC, Cohenca N, Johnson JD, Paranjpe A
      A micro-computed tomography-based comparison of the canal transportation and centering ability of ProTaper Universal rotary and WaveOne reciprocating files.
      24389561 Quintessence international (Berlin, Germany : 1985) , 2014 Feb. : 45(2)101-8
    • Silva EJ, Nejaim Y, Silva AI, Haiter-Neto F, Zaia AA, Cohenca N
      Evaluation of Root Canal Configuration of Maxillary Molars in a Brazilian Population Using Cone-beam Computed Tomographic Imaging: An In Vivo Study.
      24461399 Journal of endodontics , 2014 Feb. : 40(2)173-6
    • Cohenca N, Silva LA, Silva RA, Nelson-Filho P, Heilborn C, Watanabe E, Saraiva MC
      Microbiological evaluation of different irrigation protocols on root canal disinfection in teeth with apical periodontitis: an in vivo study.
      24474286 Brazilian dental journal , 2013 Sept. : 24(5)467-73
    • Silva EJ, Nejaim Y, Silva AV, Haiter-Neto F, Cohenca N
      Evaluation of root canal configuration of mandibular molars in a Brazilian population by using cone-beam computed tomography: an in vivo study.
      23791250 Journal of endodontics , 2013 July : 39(7)849-52
    • Ball RL, Barbizam JV, Cohenca N
      Intraoperative endodontic applications of cone-beam computed tomography.
      23522555 Journal of endodontics , 2013 Apr, : 39(4)548-57
    • May JJ, Cohenca N, Peters OA
      Contemporary management of horizontal root fractures to the permanent dentition: diagnosis--radiologic assessment to include cone-beam computed tomography.
      23635979 Pediatric dentistry , 2013 Mar. : 35(2)120-4
    • Ha JH, Kim SK, Cohenca N, Kim HC
      Effect of R-phase heat treatment on torsional resistance and cyclic fatigue fracture.
      23402513 Journal of endodontics , 2013 Mar. : 39(3)389-93
    • May JJ, Cohenca N, Peters OA
      Contemporary management of horizontal root fractures to the permanent dentition: diagnosis--radiologic assessment to include cone-beam computed tomography.
      23439041 Journal of endodontics , 2013 Mar. : 39(3 Suppl)S20-5
    • Cohenca N, Berg J
      Diagnosis and conservative treatment of dens invaginatus type III using cone beam computed tomography: two case reports.
      23635895 Pediatric dentistry , 2013 Jan. : 35(1)E33-7
    • de Gregorio C, Arias A, Navarrete N, Del Rio V, Oltra E, Cohenca N
      Effect of apical size and taper on volume of irrigant delivered at working length with apical negative pressure at different root curvatures.
      23228270 Journal of endodontics , 2013 Jan. : 39(1)119-24
    • Cohenca N, Paranjpe A, Berg J
      Vital pulp therapy.
      23174610 Dental clinics of North America , 2013 Jan. : 57(1)59-73
    • Kwan SC, Johnson JD, Cohenca N
      The effect of splint material and thickness on tooth mobility after extraction and replantation using a human cadaveric model.
      22107132 Dental traumatology : official publication of International Association for Dental Traumatology , 2012 Aug. : 28(4)277-81
    • Duddy FA, Weissman J, Lee RA Sr, Paranjpe A, Johnson JD, Cohenca N
      Influence of different types of mouthguards on strength and performance of collegiate athletes: a controlled-randomized trial.
      22272945 Dental traumatology : official publication of International Association for Dental Traumatology , 2012 Aug. : 28(4)263-7
    • Malmgren B, Andreasen JO, Flores MT, Robertson A, DiAngelis AJ, Andersson L, Cavalleri G, Cohenca N, Day P, Hicks ML, Malmgren O, Moule AJ, Onetto J, Tsukiboshi M, International Association of Dental Traumatology
      International Association of Dental Traumatology guidelines for the management of traumatic dental injuries: 3. Injuries in the primary dentition.
      22583659 Dental traumatology : official publication of International Association for Dental Traumatology , 2012 June : 28(3)174-82
    • Paranjpe A, de Gregorio C, Gonzalez AM, Gomez A, Silva Herzog D, Piña AA, Cohenca N
      Efficacy of the self-adjusting file system on cleaning and shaping oval canals: a microbiological and microscopic evaluation.
      22244642 Journal of endodontics , 2012 Feb. : 38(2)226-31
    • de Pablo OV, Estevez R, Heilborn C, Cohenca N
      Root anatomy and canal configuration of the permanent mandibular first molar: clinical implications and recommendations.
      22259805 Quintessence international (Berlin, Germany : 1985) , 2012 Jan. : 43(1)15-27
    • Gatten DL, Riedy CA, Hong SK, Johnson JD, Cohenca N
      Quality of life of endodontically treated versus implant treated patients: a University-based qualitative research study.
      21689542 Journal of endodontics , 2011 July : 37(7)903-9
    • Wiseman A, Cox TC, Paranjpe A, Flake NM, Cohenca N, Johnson JD
      Efficacy of sonic and ultrasonic activation for removal of calcium hydroxide from mesial canals of mandibular molars: a microtomographic study.
      21238809 Journal of endodontics , 2011 Feb. : 37(2)235-8
    • de Pablo OV, Estevez R, Péix Sánchez M, Heilborn C, Cohenca N
      Root anatomy and canal configuration of the permanent mandibular first molar: a systematic review.
      21092807 Journal of endodontics , 2010 Dec. : 36(12)1919-31
    • Heilborn C, Reynolds K, Johnson JD, Cohenca N
      Cleaning efficacy of an apical negative-pressure irrigation system at different exposure times.
      20806100 Quintessence international (Berlin, Germany : 1985) , 2010 Oct. : 41(9)759-67
    • de Gregorio C, Estevez R, Cisneros R, Paranjpe A, Cohenca N
      Efficacy of different irrigation and activation systems on the penetration of sodium hypochlorite into simulated lateral canals and up to working length: an in vitro study.
      20630302 Journal of endodontics , 2010 July : 36(7)1216-21
    • da Silva LA, Nelson-Filho P, da Silva RA, Flores DS, Heilborn C, Johnson JD, Cohenca N
      Revascularization and periapical repair after endodontic treatment using apical negative pressure irrigation versus conventional irrigation plus triantibiotic intracanal dressing in dogs' teeth with apical periodontitis.
      20416538 Oral surgery, oral medicine, oral pathology, oral radiology, and endodontics , 2010 May : 109(5)779-87
    • Brunson M, Heilborn C, Johnson DJ, Cohenca N
      Effect of apical preparation size and preparation taper on irrigant volume delivered by using negative pressure irrigation system.
      20307751 Journal of endodontics , 2010 Apr, : 36(4)721-4
    • Cohenca N, Heilborn C, Johnson JD, Flores DS, Ito IY, da Silva LA
      Apical negative pressure irrigation versus conventional irrigation plus triantibiotic intracanal dressing on root canal disinfection in dog teeth.
      20123368 Oral surgery, oral medicine, oral pathology, oral radiology, and endodontics , 2010 Jan. : 109(1)e42-6
    • Silberman A, Heilborn C, Cohenca N
      Endodontic therapy of a mandibular third molar with 5 canals: a case report.
      19587885 Quintessence international (Berlin, Germany : 1985) , 2009 June : 40(6)453-5
    • de Gregorio C, Estevez R, Cisneros R, Heilborn C, Cohenca N
      Effect of EDTA, sonic, and ultrasonic activation on the penetration of sodium hypochlorite into simulated lateral canals: an in vitro study.
      19482193 Journal of endodontics , 2009 June : 35(6)891-5
    • Guzmán-Martínez N, Silva-Herzog FD, Méndez GV, Martín-Pérez S, Cerda-Cristerna BI, Cohenca N
      The effect of Emdogain and 24% EDTA root conditioning on periodontal healing of replanted dog's teeth.
      19208009 Dental traumatology : official publication of International Association for Dental Traumatology , 2009 Feb. : 25(1)43-50
    • Hockett JL, Dommisch JK, Johnson JD, Cohenca N
      Antimicrobial efficacy of two irrigation techniques in tapered and nontapered canal preparations: an in vitro study.
      18928850 Journal of endodontics , 2008 Nov. : 34(11)1374-7
    • Cohenca N, Roges RA, Roges R
      The incidence and severity of dental trauma in intercollegiate athletes.
      17670881 Journal of the American Dental Association (1939) , 2007 Aug. : 138(8)1121-6
    • Cohenca N, Stabholz A
      Decoronation - a conservative method to treat ankylosed teeth for preservation of alveolar ridge prior to permanent prosthetic reconstruction: literature review and case presentation.
      17367456 Dental traumatology : official publication of International Association for Dental Traumatology , 2007 Apr, : 23(2)87-94
    • Cohenca N, Simon JH, Roges R, Morag Y, Malfaz JM
      Clinical indications for digital imaging in dento-alveolar trauma. Part 1: traumatic injuries.
      17367457 Dental traumatology : official publication of International Association for Dental Traumatology , 2007 Apr, : 23(2)95-104
    • Cohenca N, Simon JH, Mathur A, Malfaz JM
      Clinical indications for digital imaging in dento-alveolar trauma. Part 2: root resorption.
      17367458 Dental traumatology : official publication of International Association for Dental Traumatology , 2007 Apr, : 23(2)105-13
    • Cohenca N, Forrest JL, Rotstein I
      Knowledge of oral health professionals of treatment of avulsed teeth.
      17073920 Dental traumatology : official publication of International Association for Dental Traumatology , 2006 Dec. : 22(6)296-301
    • Holan G, Cohenca N, Brin I, Sgan-Cohen H
      An oral health promotion program for the prevention of complications following avulsion: the effect on knowledge of physical education teachers.
      17073925 Dental traumatology : official publication of International Association for Dental Traumatology , 2006 Dec. : 22(6)323-7
    • Patel R, Cohenca N
      Maturogenesis of a cariously exposed immature permanent tooth using MTA for direct pulp capping: a case report.
      17073926 Dental traumatology : official publication of International Association for Dental Traumatology , 2006 Dec. : 22(6)328-33
    • Silberman A, Cohenca N, Simon JH
      Anatomical redesign for the treatment of dens invaginatus type III with open apexes: a literature review and case presentation.
      16521383 Journal of the American Dental Association (1939) , 2006 Feb. : 137(2)180-5
    • Ram D, Cohenca N
      Therapeutic protocols for avulsed permanent teeth: review and clinical update.
      15185807 Pediatric dentistry , 2004 May : 26(3)251-5
    • Cohenca N, Karni S, Rotstein I
      Extraoral sinus tract misdiagnosed as an endodontic lesion.
      14686820 Journal of endodontics , 2003 Dec. : 29(12)841-3
    • Cohenca N, Karni S, Rotstein I
      Transient apical breakdown following tooth luxation.
      14708655 Dental traumatology : official publication of International Association for Dental Traumatology , 2003 Oct. : 19(5)289-91

Overview

Medical/Professional School

Universidad Nacional de Asuncion, Asunci?n

Residency

Dentistry, The Hebrew University, Hadassah Medical School, Jerusalem