Prevalence of Anterior Maxillary Osteotomy Procedure in Skeletal Class II Malocclusion-A Retrospective Study

Author(s): Ashutosh Deshpande, Hemavathy* and Balakrishna RN

Background: Skeletal class II malocclusion is one of the frequent problems occurring in the orthodontic and maxillofacial surgical practice. Skeletal class II malocclusion involves craniofacial discrepancies, which can be adjusted when patients are adolescent. Anterior Maxillary Osteotomy (AMO) is one of the commonest procedures done for the correction of maxillary excess. The anterior segmental maxillary osteotomy was first performed in 1921 by Cohn-Stock. Several modifications were done regarding approaches for AMO by Wassmund, Wundere and Cupar. Cupar’s method is the most preferred approach by the surgeons. The aim of this study is to determine the prevalence of AMO in treatment of skeletal class II malocclusion.

Materials & Methods: A retrospective study was conducted in the Department of Oral and Maxillofacial Surgery. The records from June 2019 till 2020 were screened and the relevant information regarding type of treatment, age and gender was gathered and tabulated. Descriptive analysis and chi square tests were performed to determine the statistical significance.

Results: Among 152 patients included in study, 10 (6.6%) patient had undergone AMO and 142 (93.4%) patients underwent other surgical and orthodontic treatment. The maximum AMO procedures were done in the age group of 26-30 yrs (2.63%) when compared to other surgical and orthodontic procedures. There was no significant difference found in prevalence of AMO procedure age and gender p-0.06 and p-0.67 (p<0.05).

Conclusion: Within the limit of this study we can conclude that the prevalence of the anterior maxillary osteotomy procedure is less as compared to the other orthognathic and orthodontic procedures. The prevalence of AMO procedure was maximum in the age group between 26-30 years. No significant difference was seen between the prevalence of the procedure in males and females. Awareness about surgical treatment and presurgical counselling should be done for patients with dento-skeletal deformities.


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