A comparative study of vertical lip changes after standard edgewise and preadjusted orthodontic treatments

Oshagh, Morteza; Karamifar, Amir Ali; Salehi, Peyman; Naseri, Mahmood

doi:10.4103/2278-9588.105672

Cited by 1 publication

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“…Changes in posterior tooth contact or anterior tooth contact, extraction of premolars, retraction of incisors, will affect the vertical dimension. 29,30 Furthermore, muscle action will cause different condylar position due to the magnitude of muscle contraction. The condyle position will locate more inferior if the muscular contraction was lighter.…”

Section: Discussionmentioning

confidence: 99%

Evaluation of Changes in TMJ Position for Angle Class I Malocclusion After Orthodontic Treatment by Using Cephalometric Radiograph

et al. 2017

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Objective: A concern in fixed appliances orthodontic treatment besides reestablishing the normal occlusion characteristics might cause repositioning of the condyle position in TMJ region. The objective of this research is to find out whether there is a difference of TMJ position in Angle class I malocclusion type 1, 2, 3, 4, and 5 before and after fixed appliances orthodontic treatment. Methods:This research is a pre-and-post design study with analytical statistical approach which compared the TMJ position obtained from tracings 80 lateral cephalometric radiographs before and after fixed appliances orthodontic treatment. Purposive sampling technique was used to determine the sample size in Orthodontic Department of Rumah Sakit Gigi dan Mulut Universitas Padjadjaran from 2009-2015. The data was analyzed by using Kolmogorov-Smirnov Test and paired t-test.Results: This study revealed that the changes of condyle position in Condylion to Vertical T line (horizontally) after orthodontic treatment is not significant (P> 0.05) in Angle class I malocclusion. However, the difference of condyle position in Condylion to TC line (vertically) shows a significant difference (P< 0.05) in Angle class I malocclusion. Conclusion:The distance of the condyle from Condylion to TC line increased after fixed appliances orthodontic treatment for Angle class I malocclusion patients.

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Section: Discussionmentioning

confidence: 99%