The Dental Specialists 
Education:
- Doctor of Dental Surgery (1991), University of Iowa College of Dentistry, Iowa City, Iowa
- Certificate in Endodontics (1995), University of Iowa College of Dentistry, Iowa City, Iowa
Advanced Training:
- Ph.D., “Mechanisms and Modulation of Orofacial Pain,” Department of Pharmacology, University of Iowa
Special Professional Interests
- Past President of the Minnesota Association of Endodontists
- Past President of the American Association of Endodontists
- Past President of the American Board of Endodontics
- Director of the College of Diplomates, American Board of Endodontics
- Published dozens of book chapters and articles on dental-related pain and anxiety, and tissue regeneration in scientific and clinical journals
- Presented research at numerous national and international clinical and scientific meetings
- Invited speaker at universities and dental organizations
Professional Activities
- College of Diplomates, American Board of Endodontics
- American Dental Association
- Minnesota Dental Association
- American Association of Endodontics
- Omicron Kappa Upsilon Dental Honor Society
- Research Professor, Department of Endodontics, University of Minnesota
Publications
Durham J, Ohrbach R, Baad-Hansen L, Davies S, De Laat A, Godoi Goncalves D, Gordan VV, Goulet J-P, Häggman Henrikson P, Horton M, INfORM, Koutris M, Law A, List T, Lobbezoo F, Michelotti A, Nixdorf DJ, Fernando Oyarzo J, Peck C, Penlington C, Raphael G, Santiago V, Sharma S, Svensson P, Visscher CM, Yoshiki I, Alstergren P. Constructing the brief Diagnostic Criteria for Temporomandibular Disorders (bDC/TMD) J Oral Rehabil 2023 Dec 27. doi: 10.1111/joor.13652. Epub ahead of print. PMID: 38151896.
Carrasco-Labra A, Polk DE, Urquhart O, Aghaloo T, Claytor JW, Dhar V, Dionne RA, Espinoza L, Gordon SM, Hersh EV, Law AS, Li B S-K, Schwartz PJ, Suda KJ, Turturro, MA, Wright ML, Dawson T, Miroshnychenko A, Pahlke S, … Moore PA. (2023). Evidence-based clinical practice guideline for the pharmacologic management of acute dental pain in children. J Am Dent Assoc (1939), 154(9), 814-825.
Groenke, B. R., Idiyatullin, D., Gaalaas, L., Petersen, A., Law, A., Barsness, B., Royal, M., Fok, A., & Nixdorf, D. R. (2023). Sensitivity and Specificity of MRI versus CBCT to Detect Vertical Root Fractures Using MicroCT as a Reference Standard. J Endo, 49(6), 703–709.
Groenke, B. R., Idiyatullin, D., Gaalaas, L., Petersen, A., Chew, H. P., Law, A., Barsness, B., Royal, M., Ordinola-Zapata, R., Fok, A., Aregawi, W., & Nixdorf, D. R. (2022). Minimal Detectable Width of Tooth Fractures Using Magnetic Resonance Imaging and Method to Measure. J Endo 48(11), 1414-1420.
Weitz D, Ordinola-Zapata R, McClanahan SB, Shyne M, Law AS, Nixdorf DR; National Dental Practice-Based Research Network Collaborative Group. Preoperative Factors Associated with Anesthesia Failure for Patients Undergoing Nonsurgical Root Canal Therapy: A National Dental Practice-Based Research Network Study. J Endod. 2021 Dec;47(12):1875-1882.
Lam EWN, Law AS, Nguyen RHN, Basile S, Austah O, Gilbert GH, Lindauer PA, Romano MJ, Nixdorf DR, Fellows JL; National Dental Practice-Based Research Network Collaborative Group. Interexaminer Agreement in the Radiologic Identification of Apical Periodontitis/Rarefying Osteitis in the National Dental Practice-Based Research Network PREDICT Endodontic Study. J Endod. 2021;47(10):1575-1582.
Nosrat A, Dianat O, Verma P, Nixdorf DR, Law AS. Post-operative Pain: An Analysis on Evolution of Research in Half-Century, J Endod 2021;47(3):358-365.
Pigg M, Nixdorf DR, Law AS, Renton T, Sharav Y, Baad-Hansen L, List T. New International Classification of Orofacial Pain: What Is in It For Endodontists? J Endod 2021;47(3):345-357.
Daline IH, Nixdorf DR, Law AS, Pileggi R, National Dental Practice-Based Research Network Collaborative Group. 3-year Outcome of Patients with Persistent Pain after Root Canal Treatment: The National Dental Practice-Based Research Network. J Endod. 2020;46(5):619- 26.
Schuurmans TJ, Nixdorf DR, Idiyatullin DS, Law AS, Barsness BD, Roach SH, Gaalaas L. Accuracy and Reliability of Root Crack and Fracture Detection in Teeth Using Magnetic Resonance Imaging. Journal of Endodontics. 2019;45(6):750–5.
Hryvenko I, Cervantes, AR, Law AS, Moana-Filho EJ, Nixdorf DR. Hemicrania Continua: Case Series and Literature Review. Cephalgia 2018;38(13)1950-9.
Herrero Babiloni A, Nixdorf DR, Law AS, Moana-Filho EJ, Shueb SS, Nguyen RH, Durham J. Initial accuracy assessment of the modified S-LANSS for the detection of neuropathic orofacial pain conditions. Quintessence Int. 2017;48(5):419-429.
Fonseca Alonso B, Nixdorf DR, Shueb SS, John MT, Law AS, Durham J. Examining the Sensitivity and Specificity of 2 Screening Instruments: Odontogenic or Temporomandibular Disorder Pain? J Endod. 2017.
Pigg M, Nixdorf DR, Nguyen RH, Law AS; National Dental Practice-Based Research Network Collaborative Group. Validity of Preoperative Clinical Findings to Identify Dental Pulp Status: A National Dental Practice-Based Research Network Study. J Endod. 2016 Jun;42(6):935-42.
Nixdorf DR, Law AS, John MT, Sobieh RM, Kohli R, Nguyen RH; National Dental PBRN Collaborative Group. Differential diagnoses for persistent pain after root canal treatment: a study in the National Dental Practice-based Research Network. J Endod. 2015 Apr;41(4):457-63.
Nixdorf DR, Law AS, Lindquist K, Reams GJ, Cole E, Kanter K, Nguyen RH, Harris DR; National Dental PBRN Collaborative Group. Frequency, impact, and predictors of persistent pain after root canal treatment: a national dental PBRN study. Pain. 2016 Jan;157(1):159-65
Law AS, Nixdorf DR, Rabinowitz I, Reams GJ, Smith JA Jr, Torres AV, Harris DR; National Dental PBRN Collaborative Group. Root canal therapy reduces multiple dimensions of pain: A National Dental Practice-based Research Network study. J Endod. 2014 Nov;40(11):1738-45.
Law AS, Nixdorf DR, Aguirre AM, Reams GJ, Tortomasi AJ, Manne BD, Harris DR; National Dental PBRN Collaborative Group. Predicting severe pain after root Canal therapy in the National Dental PBRN. J Dent Res. 2015 Mar;94(3 Suppl):37S-43S.
Law A. Considerations for regeneration procedures. J Endod 2013;39:S44–S56.
Law AS. Considerations for regeneration procedures. Pediatr Dent. 2013 Mar-Apr;35(2):141-52.
Johnson WT, Law AS, McTigue DJ, Moos HL, Vann WF Jr; E/AAPD Organizing Committee. AAE and AAPD symposium overview: Contemporary management of traumatic injuries to the permanent dentition. J Endod. 2013 Mar;39(3 Suppl):S1.
Nixdorf DR, Law AS, Look JO, Rindal DB, Durand EU, Kang W, Agee BS, Fellows JL, Gordan VV, Gilbert GH; National Dental PBRN Collaborative Group. Large-scale clinical endodontic research in the national dental practice-based research network: study overview and methods. J Endod 2012;38(11):1470-8.
Law AS. Outcomes of regenerative endodontic procedures. Dent Clin North Am. 2012;56(3):627-37.
Mattscheck DJ, Law AS, Nixdorf D, The Nonodontogenic Toothache, in Pathways of the Pulp, Cohen S, Hargreaves KM eds, St. Louis, 2010, Elsevier.
Hargreaves KM, Law AS, Regenerative Endodontics, in Pathways of the Pulp Cohen S, Hargreaves KM eds, St. Louis, 2010, Elsevier.
Nixdorf DR, Moana-Filho EJ, Law AS, McGuire LA, Hodges JS, John MT. Frequency of nonodontogenic pain after endodontic therapy: a systematic review and meta-analysis. J Endod 2010 Sep;36(9):1494-8.
Law AS, Utoft Durand, E, Rindal DB, Nixdorf DR., for the DPBRN Collaborative Group. Doctor, Why Does My Tooth Still Hurt? Northwest Dent 2010;89(1):33-36.
Nixdorf DR, Moana Filho EJ, McGuire LA, Hodges JS, Law AS, John MT. Frequency of persistent tooth pain following root canal therapy: a systematic review and meta-analysis. J Endod 2010;36:224-230.
Levin LG, Law AS, Holland GR, Abbott PV, Roda RS. Identify and define all diagnostic terms for pulpal health and disease states. J Endod 2009 Dec;35(12):1645-57.
Mattscheck DJ, Law AS, The Nonodontogenic Toothache, in Pathways of the Pulp, Cohen S, Hargreaves KM eds, St. Louis, 2006, Elsevier, p 59-89.
Doyle SL, Hodges JS, Pesun IJ, Law AS, Bowles WR. Retrospective cross sectional comparison of initial nonsurgical root canal treatment and single-tooth implants. Compendium, 2007, June 28(6):296-301.
Doyle SL, Hodges JS, Pesun IJ, Law AS, Bowles WR. Retrospective cross sectional comparison of initial nonsurgical root canal treatment and single-tooth implants. J Endod 2006 Sept;32(9):822-827.
Locher-Claus MT, Erickson TE, Law AS, Johnson WT, Gebhart GF. Effects of pre-emptive morphine, ibuprofen or local anesthetic on fos expression in the spinal trigeminal nucleus following tooth pulp exposure in the rat.
J Endod 2005 Aug;31(8):578-83.
Law AS, Withrow JC, Endodontic case difficulty assessment and referral, Endodontic Colleagues for Excellence, Spring/Summer 2005.
Law AS, Beaumont, RH. Resolution of furcation bone boss associated with vital pulp tissue after nonsurgical root canal treatment of three-rooted mandibular molars: A case report of identical twins. J Endod 2004 June;30(6):444-7.
Hartwig AC, Mathias SI, Law AS, Gebhart GF. Characterization and opioid modulation of inflammatory temporomandibular joint pain in the rat. J Oral Maxillofac Surg. 2003 Nov;61(11):1302-9.
Mattscheck DJ, Law AS, Noblett WC. Retreatment versus initial root canal treatment: Factors affecting posttreatment pain. Oral Surg Oral Med Oral Pathol Oral Radiol Endod. 2001 Sep;92(3):321-4.
Steen Law SL, Southard, K, Law AS, Logan HL, Jakobsen, JR. An evaluation of preoperative ibuprofen for treatment of pain associated with orthodontic separator placement. Am J Orthod Dent Orthop 2000, 118(6):629-35.
Law AS, Baumgardner KR, Meller ST, Gebhart GF. Localization and changes in NADPH-diaphorase reactivity and nitric oxide synthase immunoreactivity in rat pulp following tooth preparation. J Dent Res. 1999 Oct;78(10):1585-95.
Baumgardner KR, Law AS, Gebhart GF. Localization and changes in superoxide dismutase immunoreactivity in rat pulp after tooth preparation. Oral Surg Oral Med Oral Pathol Oral Radiol Endod. 1999 Oct;88(4):488-95.
Lilly JP, Law AS. Atypical odontalgia misdiagnosed as odontogenic pain: a case report and discussion of treatment. J Endod. 1997 May;23(5):337-9.
Law AS, Lilly JP. Trigeminal neuralgia mimicking odontogenic pain. A report of two cases. Oral Surg Oral Med Oral Pathol Oral Radiol Endod. 1995 Jul;80(1):96-100.
Law A, Logan H, Baron R. Desire for control, felt control, and stress inoculation training during dental treatment. J Per Soc Psych 67(5):926-936, 1994.
Logan H, Baron R, Keeley K, Law A, Stein S. Desired control and felt control as mediators of stress in a dental setting. Health Psych 10(5):352-359, 1991.
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