Corticotomy for Correction of Skeletal Anterior Open Bite Using Miniplates as Skeletal Anchorage (A Clinical and Cone Beam Comparative Study)

Authors

Maha Mohamed, Assistant Lecturer of Orthodontics, Orthodontic Department, Faculty of Dental Medicine for Girls, Al- Azhar University
Ahmed Salama, Professor of Orthodontics, Orthodontic Department, Faculty of Dental Medicine for Girls, Al-Azhar University.
Tarek Marei, Assistant Professor of Orthodontics, Orthodontic Department, Faculty of Dental Medicine for Girls, Al-Azhar UniversityFollow
Hatem Alahmady, Professor of Oral and Maxillo-facial Surgery, Faculty of Dental Medicine, Faculty of Dental Medicine for Girls, Al-Azhar University.
Farouk Hussain, Assistant Professor of Orthodontics, Orthodontic Department, Faculty of Dental Medicine, Al-Azhar University (Boy’s branch).

Document Type

Original Study

Abstract

Objective: This study was designed to evaluate the effect of corticotomy and miniplates’ usage as skeletal anchorage for maxillary molars’ intrusion during correction of skeletal anterior open bite (SAOB). Patients, materials and methods:A sample of 22 patients with an age range from 14 to 22 years, suffering from skeletal anterior open bite with increased posterior maxillary vertical height. The participants were randomly divided into two groups according to the corticotomy approach. Group I: both buccal and palatal corticotomies were performed. Group II: only buccal corticotomy was performed. Buccal miniplates and palatal mini-screws were used as skeletal anchorage for maxillary molars’ intrusion assisted by corticotomy. The measurements, including maxillary dento-alveolar heights (mm), bucal crestal alveolarbone heights (mm), bucco-palatal angulations (B-P˚) and mesio-distal angulations (M-D˚) of right and left maxillary first permanent molars, 4.5 months after intrusion commencement. Results: The dento-alveolar height as well as the buccal crestal alveolar height decreased significantly after intrusion in both groups (p≤0.001 and p≤0.05, respectively), but without significant differences between them. Similarly, the M-D and B-P angulations increased significantly after intrusion in both groups (p≤0.01 and p≤0.001, respectively), with no significant differences between both groups. Conclusions: The current corticotomy approaches and temporary anchorage devices (TADs) were similarly effective for maxillary molar intrusion in cases of (SAOB), but complete correction of SAOB was not achieved. Both the posterior maxillarydento-alveolar and buccal crestal alveolar bone heights diminished similarly in both corticotomy methods. Neither mesio-distal nor bucco-palatal angulations of maxillary first permanent molar crown revealed major changes in matching both approaches of intrusion.

Keywords

Corticotomy; skeletal open bite; intrusion; miniplates

How to Cite This Article

Mohamed, Maha; Salama, Ahmed; Marei, Tarek; Alahmady, Hatem; and Hussain, Farouk (2017) "Corticotomy for Correction of Skeletal Anterior Open Bite Using Miniplates as Skeletal Anchorage (A Clinical and Cone Beam Comparative Study)," Al-Azhar Journal of Dentistry: Vol. 4: Iss. 4, Article 11.
DOI: https://doi.org/10.21608/adjg.2017.5290