Non surgical treatment strategies and outcomes in patients with class II division I malocclusion and severe overjet

Class II malocclusion is among the most common treated cases in orthodontics, yet there has not been a uniform consensus on the most effective and stable non-surgical treatment approach for class II division 1 malocclusion.

The purpose of this study is to assess effectiveness, long term stability, and quality of life following non-surgical orthodontic treatment in patients with Class II Division I malocclusion and severe overjet.

This study consists of a retrospective arm, analyzing the treatment approaches and effectiveness of class II division 1 with severe overjet, as well as a prospective arm assessing long-term stability and quality of life. Initial and final results for 30 patients treated non-surgically were analyzed by photos and lateral cephalometric radiographs. A post retention clinical exam was done for final measurements, assessment for practitioner and patient satisfaction, and patient quality of life questionnaires.

Non-surgical treatments for severe class II division 1 patients have shown to be statistically significant in effectively reducing overjet and overbite (P<0.01) as well as improving the SNB and ANB angles (P<0.01) and angulation of maxillary incisors to SN plane (P<0.05). Patient satisfaction was averaged at 4.1-4.3 (on a 5-point scale) for treatment, esthetics, and occlusion indicating good results and long-term stability. Quality of life assessments were also high based on the OHIP and CPQ.

Class II division 1 malocclusion with severe overjet can be successfully treated with non-surgical treatment approaches. These treatment approaches have shown to be reliable in retention and stability of occlusion, as well as resulting in high patient satisfaction.