Distribution of mandibular trabeculae bone volume fraction in relation to different MOP intervals for accelerating orthodontic tooth movement: A randomized controlled trial
Document Type
Article
Publication Date
11-1-2020
Abstract
To investigate the effect of micro-osteoperforation (MOP) on the horizontal and vertical distribution of mandibular trabeculae bone volume fraction in relation to different MOP intervals during canine retraction. Materials and Methods: This single-center, single-blinded, prospective randomized split-mouth clinical trial included 30 healthy participants aged 18 years and older, randomized into three groups of different MOP intervals (4, 8, and 12-weekly). Cone beam computed tomography images were taken to assess the bone volume fraction (bone volume over total volume or BV/TV). Results: BV/TV was significantly reduced (mean difference: 9.79%, standard deviation SD]: 11.89%; 95% confidence interval CI]: 4.77, 14.81%; P<.01) and canine retraction increased (mean difference: -1.25 mm/4 mo, SD: 0.79 mm; 95% CI: -1.59, -0.92 mm; P<.01) with MOP, compared to control sites. MOP significantly changed the vertical and horizontal patterns of trabeculae bone with lower values nearer to intervention sites. Only the 4-weekly MOP interval group showed significant decrease in BV/TV (mean difference: 14.73%, SD: 12.88%; 95% CI: 3.96, 25.50%; P = .01) despite significant increase in canine retraction rate for all interval groups. With the use of MOP, BV/TV was found to be inversely correlated to the rate of canine retraction (r = -0.425; P = .04). Conclusions: Mandibular trabecular alveolar bone volume fraction was reduced and rate of orthodontic tooth movement increased with MOP, especially in the 4-weekly interval. However, this effect was limited to the immediate interdental region of MOP.
Keywords
Accelerated tooth movement, Micro-osteoperforation, Bone volume fraction, BV/TV
Divisions
Dentistry
Funders
Malaysia Ministry of Higher Education Fundamental Research Grant Scheme [FP018-2017A]
Publication Title
Angle Orthidontist
Volume
90
Issue
6
Publisher
E H Angle Education Research Foundation
Publisher Location
1615 BEACON ST, NEWTON N, MA 02468-1507 USA