Slow and fast orthodontic tooth movement: an experimental study on humans.

Giannopoulou, Catherine; Dudic, Alexander; Pandis, Nikolaos; Kiliaridis, Stavros (2016). Slow and fast orthodontic tooth movement: an experimental study on humans. European journal of orthodontics, 38(4), pp. 404-408. Oxford University Press 10.1093/ejo/cjv070

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INTRODUCTION The aim of this study was to investigate the variation in the amount of the orthodontically induced tooth movement in humans and potential associations between the amount of tooth movement with age and location in the mandible or maxilla. SUBJECTS AND METHODS This study included 11 participants (7 females, 4 males) with an age range of 11.3-28.6 years. In a standardized experimental orthodontic tooth movement protocol, two premolars of each participant were moved buccally during 8 weeks with the use of 1 N force. No functional or localized obstacles were affecting the displacement. Plaster models before and after the experimental tooth movement were constructed, digitized, and superimposed, to evaluate the amount of tooth movement of each tooth. Random effects linear regression analysis was performed to examine associations between tooth displacement, age, and tooth location. RESULTS The mean displacement of the teeth was 2.7±1.4mm. The range of tooth movement varied substantially between individuals (0.6-5.8mm). The displacement of the teeth within the same individual was highly correlated (R (2) = 0.78, P < 0.001). The tooth displacement decreased with age; however, this finding did not reach statistical significance (β = -0.11, 95% CI: -0.28, 0.05, P = 0.172). The tooth movement was higher in the maxilla than in the mandible (β = 0.47, 95% CI: 0.81, 0.86, P = 0.018). CONCLUSION Wide range of tooth displacement revealed slow and fast movers in this sample. Larger displacements were recorded in the maxilla compared to the mandible and in younger individuals.

Item Type:

Journal Article (Original Article)


04 Faculty of Medicine > School of Dental Medicine
04 Faculty of Medicine > School of Dental Medicine > Department of Orthodontics

UniBE Contributor:

Pandis, Nikolaos and Kiliaridis, Stavros


600 Technology > 610 Medicine & health




Oxford University Press




Eveline Carmen Schuler

Date Deposited:

03 May 2017 11:13

Last Modified:

01 Sep 2019 02:30

Publisher DOI:


PubMed ID:





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