Patricia A. Lenton, RDH, MA, CCRP

Director, Oral Health Research Clinic, Department of Diagnostic and Biological Sciences

Patricia A. Lenton

Contact Info

Office Phone 612-624-9669

Fax 612-626-5778

Office Address:
7-546 Moos Tower
515 Delaware St. SE
Minneapolis, MN 55455

MA, University of Minnesota (Education, Training and Development), 1998

BS, University of Minnesota (Dental Hygiene Education), 1981

Dental Hygiene, Graduate Dental Hygienist, University of Minnesota, 1978 - Dental Assisting, Certification & Registration, Registration Area Technical College, 1974


Ms. Lenton is Director of the Oral Health Clinical Research Center at the University of Minnesota. She is also a member of the Division of TMD and Orofacial Pain in the Department of Diagnostic and Biological Sciences in the School of Dentistry at the University of Minnesota. Since joining the Oral Health Research Center in 1989, Ms. Lenton has served as Study Examiner, Project Coordinator, Principal or Co-Principal Investigator on grant or contract funded research for over 30 clinical research studies. Her thesis project resulted in the development of a pre-calibration training manual for examiners responsible for measuring periodontal indices in clinical trials.

Ms. Lenton has authored/co-authored several publications and presented the results at several national and international meetings. She has served as consultant to train periodontal examiners for centers throughout the United States. She is a member of several professional organizations including the International Association of Dental Research/American Association of Dental Research and the International Society for Breath Odor Research.

Ms. Lenton has visited and presented at a number of Universities both domestically and abroad. She participates in the Colgate Leadership Forum and has been invited to lecture in the Republic of Ireland, Northern Ireland, and Germany.

Awards & Recognition

  • Graduated with Distinction, University of Minnesota.
  • Completed Honors Project examining the use of "Inquiry" in education.
  • First recipient of the "Ione Jackson Scholarship Award for Excellence in Education".
  • Program Chair, Assessing Oral Malodor-Established Methods and Emerging Technologies. IADR General Session, G?teborg, Sweden, 2003
  • Program Chair, Lunch and Learning Program- Training & Calibrating Periodontal Examiners, AADR General Session, Baltimore, Maryland, 2005
  • Speaker, Colgate Leadership Forum
  • Recipient, 2013 Distinguished Dental Hygiene Alumna Award, sponsored by the School of Dentistry Alumni Society; awarded, April 25, 2014.
  • Recipient, Oral Health Research Award sponsored by Colgate Palmolive in conjunction with the Oral Health Research Group of the International Association for Dental Research, March, 2013.


Research Summary/Interests

Developing standardized training and calibration methods for periodontal examiners, sensory judges, and examiners who perform the Research Diagnostic Criteria (RDC) examination for patients with temporo-mandibular joint-disorder (TMJ-D).

The etiology, assessment, and treatment options for the management of breath odor.

Oral inflammation and its relationship to systemic health.

Oral health-related quality of life.


  • Springfield J., Suarez F.L., Majerus G.J., Lenton, P.A., Furne, J.K., Levitt, M.D. Spontaneous fluctuations in the concentrations of oral sulfur-containing gases. The Journal of Dental Research. May 2001, 80(5):1441-4, 2001.
  • Lenton, P., Majerus, G., Bakdash, B. Counseling and Treating Bad Breath Patients: A Step-by Step Approach. The Journal of Contemporary Dental Practice at 2: (2) Spring Issue, 2001.
  • Furne J. Majerus G. Lenton P. Springfield J. Levitt DG. Levitt MD. Comparison of volatile sulfur compound concentrations measured with a sulfide detector vs. gas chromatography. Journal of Dental Research. 2002 Feb. 81(2):140-3,
  • Pehling J. Schiffman E. Look J. Shaefer J. Lenton P. Fricton J. Interexaminer reliability and clinical validity of the temporomandibular index: a new outcome measure for temporomandibular disorders. Journal of Orofacial Pain. 16(4):296-304, 2002 Fall
  • J. Greenman, J. Duffield, P. Spencer, M. Rosenberg, D. Corry, S. Saad, P. Lenton, G. Majerus, S. Nachnani, and M. El-Maaytah. Study on the Organoleptic Intensity Scale for Measuring Oral Malodor. J Dent Res 83(1):81-85, 2004.
  • CM Hunter, HP Niles, PA Lenton, GJ Majerus, J Vazquez, C Kloos, R Subramanyam, MI Williams, D Cummins. P26 Breath Odor Evaluation by Detection of Volatile Sulfur Compounds—Correlation with Organoleptic Odor Ratings. Oral Diseases 2005 11:s1 48
  • S. Nachnani, G. Majerus, P. Lenton, J. Hodges. Effects of Training Odor Judges on Intensity Scores. Oral Diseases Mar. 2005, 11(s1), 40-44.
  • John Greenman, Mohammed El-Maaytah, John Duffield, Paul Spencer, Mel Rosenberg, David Corry, Saliha Saad,Patricia Lenton, Georgia Majerus, and Sushma Nachnani. Assessing the relationship between concentrations of malodor compounds and odor scores from judges. Am Dent Assoc 2005; 136: 749-757.
  • Mulet M. Decker K. Look J. Lenton P. Schiffman E. Assessment of the effectiveness of Rocabado’s 6x6 exercises for the treatment of patients with masticatory myofascial pain and forward head posture. [Journal Article. Validation Studies]Journal of Orofacial Pain. Accepted for publication Spring 2007.
  • E. Schiffman, E. Truelove, R. Ohrbach, Y. Gonzalez, G. Anderson, A. Jackson, P. Lenton, W. Pan, and J. Look, Diagnostic Validity of Current and Revised RDC/TMD for Myofascial Pain Diagnosis. Jr. of Dent Res 86, 1315; 2007.
  • Johnson, Ruoquiong Chen, Patricia A. Lenton, Guizhen Zhang, James E. Hinrichs, and Joel D. Rudney. Persistence of Extracrevicular Bacterial Reservoirs After Treatment of Aggressive Periodontitis Jason D. J Periodontol 2008; 79:2305-2312
  • Lenton, P. and Ridpath, J. Health Literacy for the Dental Team. Continuing Dental Education at Date Course Online 01/06/09.
  • Truelove E, Pan W, Look JO, Mancl LA, Ohrbach RK, Velly AM, Huggins KH, Lenton P, Shiffman EL. The Research Diagnostic Criteria for Temporomandibular Disorders. III: validity of Axis I diagnoses. J Orofac Pain. 2010 Winter;24(1):35-47.
  • Look JO, John MT, Tai F, Huggins KH, Lenton PA, Truelove EL, Ohrbach R, Anderson GC, Shiffman EL. The Research Diagnostic Criteria For Temporomandibular Disorders. II: reliability of Axis I diagnoses and selected clinical measures. J Orofac Pain. 2010 Winter;24(1):25-34.
  • Velly AM, JO Look, E Schiffman, PA Lenton, W Kang, RP Messner, CA Holcroft, The Effect of Fibromyalgia and Widespread Pain on the Clinically Significant Temporomandibular Muscle and Joint Pain Disorders—a Prospective 18-month Cohort Study. Pain 11 (11), 1155-1164. 2010.
  • DJ Paetznick, GA Reineccius, TL Peppare, JM Herkert, P Lenton. Comparison of Breath and In-mouth Collection for the Measurement of Oral Malodorous Compounds by Gas Chromatography Using Sulfur Chemiluminescence Detection. Jr of Breath Res. 4(1), 017106, 2010
  • Velly AM, Look JO, Carlson C, Lenton PA, Kang W, Holcroft CA, Fricton JR. The Effect of Catastrophizing and Depression on Chronic Pain-a Prospective Cohort Study of Temporomandibular Muscle and Joint Disorders. Pain. 2011; 152(10): 2377-2383.
  • Basi DL, Velly AM, Schiffman EL, Lenton PA, Besspiata DA, Rankin AM, Hughes PJ, Swift JQ, Kehl LJ. Human Temporomandibular Joint and Myofascial Pain Biochemical Profiles: a Case-control Study. J Oral Rehab 2012 39(5): 326-337.
  • Lenton, P., Majerus, G., Bakdash, B. Counseling and Treating Bad Breath Patients: A Step-by Step Approach. J Contemp Dent Prac 2: (2) 46-61 2001; revised, 2012.
  • JD Rudney, R Chen, P. Lenton, J Li, Y Li, RS Jones, C Reilly, AS Fok, C Aparicio. A reproducible oral microcosm biofilm model for testing dental materials. Jr of Applied Microbiology. 113(6): 1540-1553. 2012.
  • P Lenton, J Rudney, R Chen, A Fok, C Aparicio, RS Jones. Imaging in Vivo Secondary Caries and Ex-Vivo Dental Biofilms Using Cross-polarization Optical Coherence Tomography. Dental Materials Vol. 28, Iss 7, Pages 792-800, July 2012
  • Blue CM, Lenton P, Lunos S, Poppe K, Osborn JB: A Pilot Study Comparing the Outcome of Scaling/Root-Planing With and Without Perioscope? Technology. 2012
  • EL Schiffman, AM Velly, JO Look, JS Hodges, JQ Swift, KL Decker, QN Anderson, RB Templeton, P Lenton, W Kang, JR Fricton. Effects of four treatment strategies for temporomandibular joint closed lock. International journal of oral and maxillofacial surgery, 2013.
  • Osborn JB, Blue CM, Lunos S, Lenton, P: Endoscopic vs. tactile evaluation of subgingival calculus. J Dent Hyg Aug 2014 vol. 88 no.4 229-236
  • Blue CM, Lenton P, Lunos S, Poppe K, Osborn JB: A pilot study comparing the outcome of scaling/root planing with and without Perioscope?technology: JDH87(3): 152-157, 2013
  • Y Li, C Carrera, R Chen, J Li, P. Lenton, JD Rudney, RS Jones, C Aparicio, AS Fok. Interfacial degradation in composite restorations challenged by multi-species biofilms. Dental Materials 29, e73-e74 2013.
  • William A. Rush; Titus K.L. Schleyer; Michael Kirshner; Raymond Boyle; Merry Jo Thoele; P.A. Lenton; Steve Asche; Thankam Thyvalikakath; Heiko Spallek; Emily C. Durand; et al. Integrating tobacco dependence counseling into electronic dental records: A multi-method approach. Journal of Dental Education;2014;78(1):31-39.
  • R. Seemann; M.D. Conceicao; A. Filippi; J. Greenman; P. Lenton; S. Nachnani; M. Quirynen; S. Roldan; H. Schulze; N. Sterer; et. al. Halitosis management by the general practitioner – Results of an international consensus workshop.Journal of Breath Research; 2014;8(1).
  • J. Greenman; P. Lenton; R. Seemann; S. Nachnani. Organoleptic assessment of halitosis for dental professionals – General Recommendations Journal of Breath Research; 2014;8(1).
  • Y Li, C Carrera; R Chen; J Li; P. Lenton; JD Rudney; RS Jones; C Aparicio; AS Fok. Degradation in the dentin-composite interface subjected to multi-species biofilm challenges. Acta Biomaterialia; 2014; 10(1):375-383.