Alveolar bone loss around lower incisors during surgical orthodontic treatment in mandibular prognathism.
OBJECTIVE
To evaluate the alveolar bone loss around lower incisors incurred during surgical orthodontic treatment in individuals with mandibular prognathism.


METHODS
The samples consisted of 25 patients (13 men, 12 women; mean ages: 26.3 ± 2.7 years) treated with jaw surgery and orthodontic treatment. Lateral and frontal cephalograms and cone-beam computed tomography (CBCT) images of the patients were obtained before treatment (T0) and after presurgical orthodontic treatment (T1) and after debonding (T2). After measurement of variables, repeated-measures analysis of variance with Bonferroni's multiple comparison test and Pearson and Spearman correlation analysis were performed.


RESULTS
The lower central and lateral incisors showed that the vertical alveolar bone level and the alveolar bone thickness of the labial and lingual plates were reduced after presurgical orthodontic treatment but were not deteriorated during postsurgical orthodontic treatment.


CONCLUSIONS
Excessive forward movement of lower incisors during presurgical orthodontic treatment could cause alveolar bone loss around the lower incisors; thus, special care should be considered in individuals with mandibular prognathism.
Department of Orthodontics, School of Dentistry, Chonnam National University Hospital, Gwangju, South Korea.
Kyung-Min
KM
Lee
Yong-Il
YI
Kim
Soo-Byung
SB
Park
Woo-Sung
WS
Son
D000328:Adult; D016301:Alveolar Bone Loss / Q000000981:diagnostic imaging / Q000209:etiology*; D000704:Analysis of Variance; D002508:Cephalometry / Q000379:methods; D054893:Cone-Beam Computed Tomography; D005260:Female; D006801:Humans; D007180:Incisor / Q000000981:diagnostic imaging / Q000503:physiopathology*; D008297:Male; D008313:Malocclusion, Angle Class III / Q000601:surgery; D008334:Mandible / Q000000981:diagnostic imaging / Q000473:pathology* / Q000601:surgery; D009971:Orthodontics, Corrective / Q000009:adverse effects*; D011378:Prognathism / Q000150:complications* / Q000000981:diagnostic imaging / Q000601:surgery; D012189:Retrospective Studies