Toru Deguchi, DDS, MSD, PhD

Professor and Chair, Department of Rehabilitative & Reconstructive Dentistry

School of Dentistry, 501 S. Preston St., Room 362A 502-852-1330


To make an appointment with Dr. Deguchi, call 502-852-3544
More details


  • MSD - Indiana University School of Dentistry, 2001
  • PhD - Okayama University Japan, 1996
  • DDS - Aichi-Gakuin University, Japan,1992

Teaching Areas

  • Orthodontics

Honors and Awards

  • Diplomate of the American Board of Orthodontics
  • Michael Matlof Memorial Teaching Fellowship Award from American Association of Orthodontics, 2014
  • Burstone Indiana Biomechanics Award from the American Association of Orthodontics, 2016
  • Fred F. Schudy Memorial Research Award from the American Association of Orthodontics, 2022

Professional Activities

  • Faculty Practice, UofL Dental Associates
  • Scientific Committee member, Angle Midwest Component
  • Associate Editor and Reviewer, Journal of Progress in Orthodontics
  • Associate Editor, Osteoporosis Reports
  • Editorial Board/Reviewer for:
    • Orthodontics & Craniofacial Research
    • The Angle Orthodontist
    • American Journal of Orthodontics and Dentofacial Orthopedics
    • Orthodontic Waves
    • The Scientific World Journal
    • Archives of Oral Biology
    • Journal of Oral Science

Professional Memberships and Affiliations

  • Japanese Association for Oral Biology
  • Japanese Orthodontic Society
  • International Association for Dental Research
  • American Association of Orthodontics
  • Indiana Association of Orthodontics
  • Edward H. Angle Society of Orthodontists
  • College of the American Board of Orthodontics
  • American Association of Dental Research
  • American Dental Education Association
  • The Charles Tweed International Foundation
  • Kentucky Association of Orthodontics
  • Southern Association of Orthodontics


Recent Journal Articles
  • Inami T, Ito G, Tabuchi M, Goto S, Deguchi T, Miyazawa K. Long-term evaluation of a skeletal class II, Angle class I adult with severe crowding and periodontitis treated with an interdisciplinary approach with lingual brackets and miniscrews, AJODO Clinical Companion (2023). 
  • Oya S, Matsushima A, Tagawa J, Kamioka H, Deguchi T. The use of lingual brackets and miniscrews as anchorage in orthodontic treatment in high angle skeletal Class II cases. AJODO Clinical Companion (2023).
  • Shigemi S, Sato T, Sakamoto M, Yajima T, Honda T, Tsumaki H, Deguchi T, Ichikawa H, Fukunaga T, Mizoguchi I. The role of TRPV2 as a regulator on the osteoclast differentiation during orthodontic tooth movement in rats. Sci Rep 13, 13718 (2023). 
  • Choi EAH, Lee KJ, Choi SH, Jung HD, Ahn HJ, Deguchi T, Cha JY. Skeletal and dentoalveolar effects of miniscrew-assisted rapid palatal expansion based on the length of the miniscrew: a randomized clinical trial. Angle Orthod 2023. doi: 10.2319/072322-512.1  
  • Murphy SJ, Lee S, Scharm JC, Kim S, Amin AA, Wu TH, Lu WE, Ni A, Ko CC, Fields HW, Deguchi T. Comparison of maxillary anterior tooth movement between Invisalign and fixed appliances. American Journal of Orthodontics and Dentofacial Orthopedics (2023). doi: 10.1016/j.ajodo.2022.10.024
  • Lee S, Wu TH, Deguchi T, Ni A, Lu WE, Minhas S, Murphy S, Ko CC. Assessment of malalignment factors related to the Invisalign treatment time aided by automated imaging processes. Angle Orthod 2022; doi: 10.2319/031622-225.1. 
  • Mitchell B, Liu J, Lee S, Watanabe K, Kim DG, Fields HW, Guo X, Wei-En L, Deguchi T. Quantitative evaluation of training method in placing miniscrews in orthodontic graduate program. Prog Orthod. 23, 33 (2022). 
  • Sakamaki T, Watanabe K, Iwasa A, Deguchi T, Horiuchi S, Tanaka E. Thread shape, cortical bone thickness, and magnitude and distribution of stress caused by the loading of orthodontic miniscrews: finite element analysis. Scientific Reports, in press, 2022.
  • Ferraro JM, Falter J, Lee S; Watanabe K, Tai-Hsien Wu TH, Kim DG, Ko CC, Tanaka E, Deguchi T. Accuracy of three-dimensional printed models derived from cone-beam computed tomography. Angle Orthodontist, in press, 2022.
  • Watanabe K, Mitchell B, Sakamaki T, Hirai Y, Kim DG, Deguchi T, Suzuki M, Ueda K, Tanaka E. Mechanical stability of orthodontic miniscrew depends on a thread shape. Journal of Dental Sciences, 2022, 17:1244-1252.
  • Moon ES, Kim S, Kim N, Jang M, Deguchi T, Zheng F, Lee DJ, Kim DG. Aging alters cervical vertebral bone density distribution: A cross-sectional study. Appl. Sci. 2022; 12:3143.
  • Hoshi K, Deguchi T, Goto M, Chida T, Takeshita N, Takahashi I, Takano-Yamamoto T. Stomatognathic functional improvement in a patient with a canted occlusal plane and temporomandibular disorder treated with an edgewise appliance using miniscrew. American Journal of Orthodontics and Dentofacial Orthopedics, 2022;161(1):140-157.
  • Fukawa R, Moon W, Deguchi T, Aga M. Posterior crossbite with mandibular asymmetry treated with lingual appliances, maxillary skeletal expanders, and alveolar bone miniscrews. American Journal of Orthodontics and Dentofacial Orthopedics, 2022;161(2):293-312.e1.
  • Watanabe K, Lee S, Lee DJ, Zheng F, Kyung HM, Kim DG, Deguchi T. Evaluation of clinical parameters for the stability of 2 types of miniscrews. American Journal of Orthodontics and Dentofacial Orthopedics,2021;161(3):437-444.
  • Fujiyama K, Kera Y, Shimizu Y, Tanikawa C, Yamashiro T, Guo X, Ni A, Deguchi T. Comparison of clinical outcomes between Invisalign and conventional fixed appliance therapies in adult patients with severe deep overbite treated with non-extraction. American Journal of Orthodontics and Dentofacial Orthopedics,2021; Oct 7:S0889-5406(21)00623-5.
  • Griffith M, Fields HW, Ni A, Guo X, Lee DJ, Deguchi T. Comparison of two Invisalign tray generations using the Peer Assessment Rating (PAR) index. American Journal of Orthodontics and Dentofacial Orthopedics, 2021;160:718-724.
  • Bhatti FUR, Karydis A, Deguchi T, Kim DG, Cho H. Understanding of Early Stage of Posttraumatic Osteoarthritis (PTOA) for Future Prospect of Diagnosis: from Knee to Temporomandibular Joint (TMJ). Curr Osteoporos Rep.,2021;19:166-174.
  • Andijani RI, Paramitha V, Guo X, Deguchi T, Tatakis DN. Lip repositioning surgery for gummy smile: Six-month clinical and radiographic lip dimensional changes. Clinical Oral Investigation, 2021;25:5907-5915.
  • Hirai Y, Watanabe K, Deguchi T, Ueda K, Hamada K, Tanaka E. Influence of insertion depth on stress distribution in orthodontic miniscrew and the surrounding bone by finite element analysis. Dental Materials Journal, 2021;40:1270-1276.
  • Inoue Y, Deguchi T, Harstfield J.K, Tome W, Kitai N. Analysis of pretreatment factors associated with stability in early Class III treatment. Progress in Orthodontics, 2021;22:23.
  • She X, Deguchi T, Yao H, Zhou J. Biomechanical effect of selective osteotomy and corticotomy on orthodontic molar uprighting. American Journal of Orthodontics and Dentofacial Orthopedics, 2021;160:292-301.
  • Srinivasan S, Tee BC, Wang A, Gohel A, Kim DG, Deguchi T, Sun Z. Reliability and accuracy of assessing temporary anchorage device-tooth root contact with cone-beam computed tomography. American Journal of Orthodontics and Dentofacial Orthopedics 2021;159:271-280.
  • Oka S, Kawanabe H, Yamanobe S, Fukui K, Baba Y, Deguchi T. Relationship between olfaction and maxillofacial morphology in children with malocclusion. Clin Exp Dent Res. 2021;7:33-39.
  • Doe Y, Ida H, Seiryu M, Deguchi T, Takeshita N, Sasaki S, Sasaki S, Irie D, Tsuru K, Ishikawa K, Takano-Yamamoto T. Titanium surface treated by calcium modification with acid-etching promotes osteogenic activity and stability of dental implants. Materialia, 2020;12:100801.
  • Watanabe K, Lewis S, Guo X, Ni A, Lee SB, Deguchi T, Kim DG. Regional variations of jaw bone characteristics in an ovariectomized rat model. J Mech Behav Biomed, 2020;110:103952.
  • Seiryu M, Ida H, Mayama A, Sasaki S, Sasaki S, Deguchi T, Takano-Yamamoto T. A comparative assessment of orthodontic treatment outcomes of mild skeletal Class III malocclusion between facemask and facemask in combination with a miniscrew for anchorage in growing patients: A single-center, prospective randomized controlled trial. Angle Orthodontist 2020;90:3-12.
  • Han CM, Watanabe K, Tsatalis AE, Lee DJ, Zheng F, Kyung HM, Deguchi T, Kim DG. Evaluations of miniscrew type-dependent mechanical stability. Journal of Clinical Biomechanics. 2019;69:21-27.
  • Kortam S, Deguchi T, Geuy P, Johnston WM, Fields HW, Palomo JM, Kim DG. Associations of pretreatment parameters with changes during orthodontic treatment. Orthod Craniofac Res. 2019; 22 S1:120-126.
  • Tsatalis AE, Watanabe K, Mitchell B, Kim DG, Lee DJ, Zheng F, Kyung HM, Deguchi T. Mechanical and clinical evaluation of the effect of microscrew on root proximity and cortical bone thickness. Eur J Orthod. 2019; 42:206-210.
  • Seki D, Takeshita N, Seiryu M, Deguchi T, Takano-Yamamoto T. Improvement of Open Bite and Stomatognathic Function in an Axenfeld- Rieger Syndrome Patient by Orthodontic Sectional Arch Mechanics: Clinical Considerations and the Risk of Orthodontic Tooth Movement. Acta Med Okayama. 2019;73:255-262.
  • Johnson TB, Siderits B, Nye S, Jeong YH, Han SH, Rhyu IC, Han JS, Deguchi T, Beck FM, Kim DG. Effect of guided bone regeneration on bone quality surrounding dental implants. J Biomech. 2018;26;80:166-170.
  • Ida H, Seiryu M, Takeshita N, Iwasaki M, Yokoyama Y, Tsutsumi Y, Ikeda E, Sasaki S, Miyashita S, Sasaki S, Fukunaga T, Deguchi T, Takano-Yamamoto T.
  • Biosafety, stability, and osteogenic activity of novel implants made of Zr(70)Ni(16)Cu(6)Al(8) bulk metallic glass for biomedical application. Acta Biomater. 2018;14. pii: S1742-7061(18)30289-7.
  • Nordstrom B, Shoji T, Anderson WC, Fields HW Jr., Beck FM, Kim DG, Takano-Yamamoto T, Deguchi T. Comparison of changes in irregularity and
  • transverse width with nickel-titanium and niobium-titanium-tantalum-zirconium archwires during initial orthodontic alignment in adolescents: A double-blind
  • randomized clinical trial. Angle Orthodontist 2018;88:348-354.
  • Burzynski J, Firestone AR, Beck FM, Fields HW, Wade A, Deguchi T. A Comparison of Digital Intraoral Scanners and Alginate Impressions: Time and Patient Satisfaction. American Journal of Orthodontics and Dentofacial Orthopedics 2018;153:534-541.
  • Deguchi T, Kim DG, Kamioka H. CO2 low-level laser therapy has an early but not delayed pain effect during experimental tooth movement. Orthod Craniofac Res. 2017;20 Suppl 1:172-176.
  • Fields HW, Kim DG, Jeon M, Firestone AR, Sun Z, Shanker S, Mercado AM, Deguchi T, Vig KWL. Evaluation of objective structured clinical examination for advanced orthodontic education 12 years after introduction. American Journal of Orthodontics and Dentofacial Orthopedics 2017;151:840-850.
  • Lee J, Jeong YH, Pittman J, Deguchi T, Johnston WM, Fields HW, Kim DG. Primary stability and viscoelastic displacement of mini-implant system under loading. Clinical Biomechanics (Bristol, Avon). 2017;41:28-33.
  • England GM, Moon ES, Roth J, Deguchi T, Firestone AR, Beck FM, Kim DG. Conditions and calibration to obtain comparable grey values between different clinical cone beam computed tomography scanners. Dentomaxillofacial Radiology 2017;46:20160322.
  • Gu J, Tang JS, Skulski B, Fields HW, Beck FM, Firestone AR, Kim DG, Deguchi T. Evaluation of Invisalign treatment effectiveness and efficiency compared with conventional fixed appliances using the Peer Assessment Rating index. American Journal of Orthodontics and Dentofacial Orthopedics 2017;151:259-266.

Recent Invited Conference and Symposium Presentations
  • Deguchi T. Comparison of treatment outcome of deep bite cases between braces, TADs, and Invisalign. The 49th Annual Moyers Pre-Symposium, An Arbor, Michigan, USA, 2022

  • Deguchi T. Three-dimensional diagnostic application for graduate program in United States – Introduction to Artificial Intelligence in the field of Orthodontics- 2020 Fall meeting of Tokyo Orthodontic Association (Virtual), Tokyo, Japan, 2020

  • Deguchi T. Three-dimensional diagnostic application for graduate program in United States. The 9th International Orthodontic Congress (Virtual), Yokohama, Japan, 2020 

  • Deguchi T. Biomechanical aspects of temporary anchorage devices. Edward H. Angle Society of Orthodontists 2019 Biennial Meeting, Napa, California, USA, 2019

  • Deguchi T. Three-dimensional diagnosis in post graduate orthodontic program in United States. Miniresidency at Yonsei University: “The evidence of current
    orthodontics”. Seoul, Korea, 2019

  • Deguchi T. The use of 3-dimensional diagnosis in post graduate orthodontic program in United States. The 14th Annual Meeting of the Kyushu Orthodontic Society, Fukuoka, Kyushu, Japan, 2019

  • Deguchi T. Latest updates on the use of 3-dimensial analysis and diagnosis for Orthodontics in United States. 76th Annual Meeting of the Japanese Orthodontic Society, Hokaido, Japan, 2017

  • Deguchi T. Biomechanical characteristics in the use of TADs. 9th World Implant Orthodontic Conference, Kobe, Japan, 2017

Support staff:
Tracey Washington - Administrative Assistant, Orthodontics