Maxillary Interdental Osteotomies Have Low Morbidity For Alveolar Crestal Bone And Adjacent Teeth: A Cbct Image-Based Study

Publication date: Available online 19 February 2018
Source:Journal of Oral and Maxillofacial Surgery
Author(s): Daniel B. Rodrigues, Paulo S.F. Campos, Larry M. Wolford, Jaqueline Ignácio, João R. Gonçalves
PurposeMaxillary segmentation involving interdental osteotomies may have an adverse effect on the inter-dental crestal bone and adjacent teeth. The purpose of this study was to evaluate the effect of interdental osteotomies on surrounding osseous and dental structures, including adjacent teeth, using cone beam computed tomography (CBCT) technology, in patients submitted to segmental maxillary osteotomies.Patients and methodsThis retrospective cohort study evaluated interdental osteotomy sites between the lateral incisors and canines in patients treated with three-piece Le Fort I osteotomies. CBCT scans were assessed using Kodac Dental Imaging software at the time intervals, T0 (presurgery), T1 (immediate post-surgery), and T2 (post-surgery minimum of 11 months). The statistical analysis using a linear regression model was adjusted to compare the variables at the different time intervals. Injury to dental structures was assessed by radiological evidence of dental damage, requirement for endodontic treatment or tooth loss.ResultsThere were 94 interdental osteotomy sites in 47 patients evaluated in this study. The mean inter-radicular distance at T0 was 2.5 mm. There was a statistically significant increase in the inter-radicular distance (T1-T0) of 0.72 mm and a reduction of the alveolar bone crest height (T2-T0) of 0.19 mm (p < 0.001) for group 2. There was a weak correlation for this increase in the inter-radicular distance with changes in alveolar crest bone height. Potential complications associated with the interdental osteotomies such as iatrogenic damage to tooth structure, need for endodontic treatment, or tooth loss were not encountered in any patients.ConclusionsThere is very low morbidity for the interdental alveolar crest and the integrity of teeth adjacent to the interdental osteotomies for patients subjected to maxillary segmentation between lateral incisors and canines.



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