Related Experiment Videos
[Effect of two stage corticotomy on maxillary protraction].
Nihon Kyosei Shika Gakkai Zasshi = the Journal of Japan Orthodontic Society
|October 1, 1989
Summary
Two-stage corticotomy significantly enhances maxillary protraction by promoting apical base protrusion in monkeys. This surgical approach minimizes unwanted orthopedic force effects on the maxilla, ensuring targeted bone movement.
Area of Science:
- Orthodontics
- Oral and Maxillofacial Surgery
- Comparative Anatomy
Context:
- Maxillary protraction is a common orthodontic procedure.
- Corticotomy-assisted surgery can enhance orthopedic movement.
- Understanding the effects of two-stage corticotomy is crucial for clinical application.
Purpose:
- To investigate the effects of two-stage corticotomy on maxillary protraction.
- To compare the outcomes of corticotomy-assisted maxillary protraction with conventional methods.
- To evaluate the histological and cephalometric changes following the procedure.
Summary:
- Experimental studies on Japanese monkeys (Macaca fuscata) utilized cast analysis, roentgenographic cephalometry, and histological examinations.
- Two-stage corticotomy with maxillary protraction led to significant apical base protrusion.
- Minimal tooth movement and limited orthopedic force influence on the maxilla were observed in the experimental group compared to controls.
- Histological examination revealed no significant circulatory disturbance, though minor inflammation and degeneration were noted, suggesting careful surgical execution is necessary.
Impact:
- Provides evidence for the efficacy of two-stage corticotomy in enhancing maxillary protraction.
- Highlights the potential for improved outcomes in orthodontic treatments requiring maxillary advancement.
- Informs surgical considerations, particularly regarding the anterior apical base of the maxillary bone.