Scott B. McClanahan, DDS, MS

Professor Emertius, Department of Restorative Sciences

Scott B. McClanahan

Contact Info

Office Phone 612-624-9900

Fax 612-626-2655

Office Address:
8-166 Moos Tower
515 Delaware St. SE
Minneapolis, MN 55455

Residency, Northwestern University Dental School (Endodontics), 1989

DDS, University of North Carolina, 1981

MS, Northwestern University, 1989

BA, University of North Carolina (Psychology), 1974


Dr. Scott B. McClanahan received a B.A. in 1974 and D.D.S. in 1981 both from the University of North Carolina at Chapel Hill. In 1981, he entered the U.S. Navy as a dental officer. In 1986, Dr. McClanahan was selected by the Navy for civilian specialty training and completed his certificate of residency in endodontics at Northwestern University Dental School as well as a M.S. from Northwestern University in 1989. After three tours of duty as a clinical endodontist, Dr. McClanahan joined the faculty of the Endodontics Department at the Naval Postgraduate Dental School, Bethesda, MD in 1998 and in 2001, assumed the responsibilities of Chairman of the Endodontics Department and Director of the Advanced Specialty Education Program in Endodontics. He retired from active duty in September 2005. Dr. McClanahan joined the faculty at the University of Minnesota, School of Dentistry as an Associate Professor in November of 2005. He is a Diplomate of the American Board of Endodontics.

Awards & Recognition

  • Fellow, International College of Dentists, October 2002
  • Fellow, Academy of General Dentistry, July 1988


Research Summary/Interests

Immunology/microbiology, coronal microleakage, restoration of endodontically treated teeth


  • Brezinsky S, Bowles WR, McClanahan SB, Fok A, Ordinola-Zapata R. In vitro comparison of PFM crown retention following endodontic access and subsequent restoration: composite, amalgam, amalgam with composite veneer, and fiber post with composite. J Endod 2020;46: 1766-1770.
  • Grigsby D, Ordinola-Zapata R, McClanahan SB, Fok A. Post-operative pain following treatment using the GentleWave system: a randomized controlled trial. J Endod 2020;46:1017-22.
  • Divine KA, McClanahan SB, Fok A. Anatomic analysis of palatal roots of maxillary molars using micro-computed tomography. J Endod 2019;45:724-8.
  • Koivisto T, Chiona D, Milroy L, McClanahan SB, Ahmad M, Bowles W. Mandibular canal location: CBCT examination. J Endod 2016;42:1018-21.
  • Lavasani SA, Tyler S, Roach SH, McClanahan SB, Ahmad M, Bowles WR. Cone beam computed tomography-anatomic analysis of maxillary posterior teeth: impact on endodontic microsurgery. J Endod 2016;42:890-5.
  • Phillips M, McClanahan S, Bowles W. A quantitative titration model for evaluating calcium hydroxide removal techniques. J Applied Oral Science 2015;23:94-100.
  • Barsness S, Bowles WR, Fok A, McClanahan SB, Harris SP. An anatomical investigation of the mandibular second molar using micro-computed tomography. Surgical & Radiologic Anatomy 2014;14:1364-9.
  • Rodriguez-Figueroa C, McClanahan SB, Bowles WR. Spectrophotometric determination of irrigant extrusion using passive ultrasonic irrigation, EndoActivator, or syringe irrigation. J Endod 2014;40:1622-6.
  • Read JK, Khan AA, Bowles WR, Lunos S, McClanahan SB. Effect of Ibuprofen on masking endodontic diagnosis. J Endod 2014;40:1058-62.
  • Harris SP, Bowles WR, Fok A, McClanahan SB. An anatomical investigation of the mandibular first molar using micro-computed tomography. J Endod 2013:39:1374-8.
  • Bierma MM, McClanahan S, Baisden MK, Bowles WR. Comparison of heat-testing methodology. J Endod 2012;38:1106-1109.
  • Ryan J, Bowles WR, Baisden MK, McClanahan SB. Case report: mandibular 1st molar with 6 canals. J Endod 2011;37:878-80.
  • Maillet M, Bowles WR, McClanahan S, John MT, Ahmad M. Cone beam computed tomography evaluation of maxillary sinusitis. J Endod 2011;37:753-7.
  • McCarthy PJ, McClanahan SB, Hodges JS, Bowles WR. Frequency of localization of the painful tooth by patients presenting for an endodontic emergency. J Endod 2010; 36:801-5.
  • Petrino JA, Boda KK, Shambarger S, Bowles WR, McClanahan SB. Challenges in regenerative endodontics: a case series. J Endod 2010:36:536 41.
  • Newton CW, Hoen MM, Goodis HE, Johnson BR, McClanahan SB. Identify and determine the metrics, hierarchy, and predictive value of all the parameters and/or methods used during endodontic diagnosis. J Endod 2009;35:1635-1644.
  • Attar S, Bowles WR, Baisden MK, Hodges JS, McClanahan SB. Evaluation of pretreatment analgesia and endodontic treatment for postoperative endodontic pain. J Endod 2008;34:652-5.
  • Saif SR, Carey CM, Tordik PA, McClanahan SB. Effect of irrigants and cementum injury on diffusion of hydroxyl ions through the dentinal tubules. J Endod 2008;34:50-52.
  • Matwychuk MJ, Bowles WR, McClanahan SB, Hodges JS, Pesun IJ. Shaping abilities of two different engine driven rotary nickel titanium systems and stainless steel balanced force technique in mandibular molars. J Endod 2007;33:868-871.
  • Huttula AS, Tordik PA, Imamura GM, Eichmiller FC, McClanahan SB. The effect of ultrasonic post instrumentation on root surface temperature. J Endod 2006;32:1085-7.
  • Tulkki MJ, Baisden MK, McClanahan SB. Cemental tear: A case of a rare root fracture. J Endod 2006;32:1005-7.
  • Stevens RW, Strother JM, McClanahan SB. Leakage and sealer penetration in smear-free dentin after a final rinse with 95% ethanol. J Endod 2006;32:785-8.
  • Radel, RT, Goodell GG, McClanahan SB, Cohen ME. A comparison of endodontic file to root end length determination using Kodak RVG 6000, Schick CDR, and Kodak Insight Film. J Endod 2006;32:566-8.
  • Hamad HA, Tordik PA, McClanahan SB. Furcation perforation repair comparing gray and white MTA: a dye-extraction study. J Endod 2006;32:337-340.
  • Ruff ML, McClanahan SB, Babel BS. In vitro antifungal efficacy of four irrigants as a final rinse. J Endod 2006;32:331-3.
  • Mavec JC, McClanahan SB, Minah GE, Johnson JD, Blundell RE. Effects of an intracanal glass ionomer barrier on coronal microleakage in teeth with post space. J Endod 2006;32:120-122.
  • Stewart ML, McClanahan SB. Cemental tear: a case report. Int Endod J 2006;36:81-6.
  • Engel GT, Goodell GG, McClanahan SB. Sealer penetration and apical microleakge in smear
  • free dentin after a final rinse with either 70% isopropyl alcohol or Peridex®. J Endod 2005;31:620- 3.
  • Crumpton BJ, Goodell GG, McClanahan SB. Effects on smear layer and debris removal with varying volumes of 17% EDTA after rotary instrumentation. J Endod 2005;31:536-8.
  • Maloney SM, McClanahan SB, Goodell GG. The effect of thermocycling on a colored glass ionomer intracoronal barrier. J Endod 2005;31:526-8.
  • Carson KR, Goodell GG, McClanahan SB. Comparison of the antimicrobial activity of six irrigants on primary endodontic pathogens. J Endod 2005;31:471-3.
  • Folk RB, Thorpe JR, McClanahan SB, Johnson JD, Strother JM. Comparison of two different direct digital radiography systems for the ability to detect artificially prepared periapical lesions. J Endod 2005;31:304-6.
  • Gharai SR, Thorpe JR, Strother JM, McClanahan SB. Comparison of generated forces and apical microleakage using nickel-titanium and stainless steel finger spreaders in curved canals. J Endod 2005;31:198-200.
  • Matt GD, Thorpe JR, Strother JM, McClanahan SB. Comparative study of white and gray Mineral Trioxide Aggregate (MTA) simulating a one- or two-step apical barrier techniques. J Endod 2004;30:876-9.
  • Weber CD, McClanahan SB, Miller GA, Diener-West M, Johnson JD. The effect of passive ultrasonic activation of 2% Chlorhexidine or 5.25% sodium hypochlorite irrigant on residual antimicrobial activity in root canals. J Endod 2003;29:562-4.
  • Pisano DM, Di Fiore PM, McClanahan SB, Lautenschlager EP, Duncan, JL. Intraorifice sealing of gutta-percha obturated root canals to prevent coronal microleakage. J Endod 1998;24:659-662.
  • Rauschenberger CR, McClanahan SB, Pederson ED, Turner DW, Kaminiski EJ. Comparison of human PMN elastase, PMN cathepsin-G & Alpha-2 Macroglobulin levels in healthy and inflamed dental pulps. J Endod 1994;20:546-550.
  • McClanahan SB, Turner DW, Kaminski EJ, Osetek EM, Heuer MA. Natural modifiers of the inflammatory process in the human dental pulp. J Endod 1991;17:589-593.


In The News

McClanahan to be named American Board of Endodontics director