Skeletal and dental stability of segmental distraction of the anterior mandibular alveolar process. A 2-year follow-up.
Publication year
2012Source
International Journal of Oral and Maxillofacial Surgery, 41, 5, (2012), pp. 553-9ISSN
Annotation
01 mei 2012
Publication type
Article / Letter to editor
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Organization
Dentistry
Journal title
International Journal of Oral and Maxillofacial Surgery
Volume
vol. 41
Issue
iss. 5
Page start
p. 553
Page end
p. 9
Subject
NCEBP 2: Evaluation of complex medical interventionsAbstract
33 patients (27 females; 6 males) were retrospectively analysed for skeletal and dental relapse before distraction osteogenesis (DOG) of the mandibular anterior alveolar process at T1 (17.0 days), after DOG at T2 (mean 6.5 days), at T3 (mean 24.4 days), and at T4 (mean 2.0 years). Lateral cephalograms were traced by hand, digitized, superimposed, and evaluated. Skeletal correction (T3-T1) was mainly achieved through the distraction of the anterior alveolar segment in a rotational manner where the incisors were more proclined. The horizontal backward relapse (T4-T3) measured -0.8mm or 19.0% at point B (p<0.001) and -1.6mm or 25.0% at incision inferior (p<0.001). Age, gender, amount and type (rotational versus translational) of advancement were not correlated with the amount of relapse. High angle patients (NL/ML'; p<0.01) and patients with large gonial angle (p<0.05) showed significantly smaller relapse rates at point B. Overcorrection of the overjet achieved by the distraction was seen in a third of the patients and could be a reason for relapse. Considering the amount of skeletal relapse the DOG could be an alternative to bilateral sagittal split osteotomy for mandibular advancement in selected cases.
This item appears in the following Collection(s)
- Academic publications [246216]
- Faculty of Medical Sciences [93266]
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