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Bone healing and revascularization after total maxillary osteotomy.

W H Bell, R J Fonseca, J W Kenneky

Journal of Oral Surgery (American Dental Association : 1965)

|April 1, 1975

Summary

This study on rhesus monkeys found that total maxillary osteotomy promotes rapid bone healing with minimal vascular issues. Palatal and gingival tissues adequately support blood supply for this surgical procedure.

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Area of Science:

Oral and Maxillofacial Surgery
Surgical Innovation
Bone Healing Research

Background:

Investigating vascularization and bone healing in total maxillary osteotomy is crucial for surgical success.
Understanding the blood supply to the maxilla post-osteotomy informs surgical techniques.
Previous studies lack comprehensive data on revascularization and osseous union following this procedure.

Purpose of the Study:

To investigate vascularization, revascularization, and bone healing after total maxillary osteotomy in adult rhesus monkeys.
To assess the impact of transecting greater palatine arteries on maxillary circulation.
To determine the adequacy of palatal mucosa and gingiva as nutrient pedicles for maxillary osteotomies.

Main Methods:

Adult rhesus monkeys served as experimental models.

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Microangiographic and histologic analyses were employed to study vascularization and bone healing.

Surgical transection of greater palatine arteries was performed to evaluate circulatory effects.

Main Results:

Microangiography and histology revealed minimal transient vascular ischemia and osteonecrosis.
Early osseous union was observed, indicating effective bone healing.
Transection of greater palatine arteries did not significantly affect circulation to the maxilla or surrounding tissues.

Conclusions:

Palatal mucosa and labial-buccal gingiva provide sufficient blood supply (nutrient pedicle) for single-stage total maxillary osteotomies.
The surgical procedure demonstrates a favorable profile for vascularization and bone healing.
Findings support the clinical application of total maxillary osteotomy using these nutrient pedicles.