Treatment effects of mandibular total arch distalization using a ramal plate
Document Type
Article
Publication Title
Korean Journal of Orthodontics
Abstract
Objective: The purpose of this study was to evaluate treatment effects after distalization of the mandibular dentition using ramal plates through lateral cephalograms. Methods: Pre- and post-treatment lateral cephalograms and dental casts of 22 adult patients (11 males and 11 females; mean age, 23.9 ± 5.52 years) who received ramal plates for mandibular molar distalization were analyzed. The treatment effects and amount of distalization of the mandibular molars were calculated and tested for statistical significance. The significance level was set at p < 0.001. Results: The mandibular first molar distalization at the crown and root were 2.10 mm (p < 0.001) and 0.81 mm (p = 0.011), respectively. In the evaluation of skeletal variables, there was a significant increase in the Wits appraisal (p < 0.001). In the evaluation of the soft tissue, there was no significant effect on upper lip position, but the lower lips showed a significant retraction of 2.2 mm (p < 0.001). Conclusions: The mandibular molars showed a significant amount of distalization accompanied by limited extrusion and mesiobuccal rotation of the crowns. A ramal plate may be a viable device for mandibular total arch distalization in Class III patients who are reluctant to undergo orthognathic surgery.
First Page
212
Last Page
219
DOI
10.4041/kjod.2016.46.4.212
Publication Date
7-1-2016
Recommended Citation
Yu, Jonghan; Park, Jae Hyun; Bayome, Mohamed; Kim, Sungkon; Kook, Yoon Ah; Kim, Yoonji; and Kim, Chang Hyen, "Treatment effects of mandibular total arch distalization using a ramal plate" (2016). ASDOH Faculty Publications. 359.
https://scholarworks.atsu.edu/asdoh-faculty/359