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An alternative for the correction of the Class II low mandibular plane angle
A G McCollum1, J P Reyneke, L M Wolford
1Department of Orthodontics, University of Witwatersrand, Johannesburg, South Africa.
Oral Surgery, Oral Medicine, and Oral Pathology
|March 1, 1989
Summary
Managing Class II deep-bite cases with low mandibular plane angles is challenging. Double-jaw surgery reorienting the occlusal plane improves function and aesthetics, offering better stability.
Area of Science:
- Dentistry
- Orthodontics
- Oral and Maxillofacial Surgery
Background:
- Traditional management of Class II deep-bite with low mandibular plane angle presents challenges in achieving optimal esthetics and long-term stability.
- Many patients with this specific malocclusion experience functional and esthetic deficits.
Observation:
- Class II deep-bite cases with low mandibular plane angles often have difficult-to-manage occlusal plane angulations.
- Surgical intervention aims to reorient the occlusal plane toward a normal angle (8° ± 5° to Frankfort horizontal).
Findings:
- Superior repositioning of the posterior maxilla and mandible corrects the skeletal and occlusal relationship to Class I.
- Increasing occlusal plane angulation influences incisor angulation, chin position, and mandibular plane angle.
- This approach improves functional outcomes and esthetic results.
Implications:
- Reorienting the occlusal plane through double-jaw surgery offers a viable solution for complex Class II deep-bite deformities.
- The principle of occlusal plane modification can enhance treatment predictability and patient satisfaction.
- This surgical strategy benefits not only Class II deep-bite cases but potentially other facial deformities.