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- Title
Mechanical Tension-Stress in Alveolar Cleft Repaired With Autogenous Bone in Canine Models.
- Authors
Liu, Anqi; Huang, Jialiang
- Abstract
Objective: Cleft lip and/or palate is a common birth defect worldwide, always accompanied by alveolar cleft. However, the success rate of secondary alveolar bone grafting is unsatisfactory. Rapid maxillary expansion (RME) often used after bone transplantation provides functional stimulation for bone graft area. This study aimed to investigate the effect of RME force on the bone graft area and midpalatal suture, and screen out the most suitable loaded force and loaded teeth, so as to provide a reference for clinical treatment. Methods: Fourteen 24-week-old male beagles were assigned randomly to 3 groups: blank control, autogenous, and autogenous with RME. Three-dimensional finite element analysis was conducted to evaluate the distribution and value of the stress in the model. The maxillae were collected and subjected to radiography and helical computed tomography to evaluate new bone formation in the graft area. Van Gieson's Picrofuchsin staining was performed for histomorphological observation. Results: After 8 weeks of RME treatment, new bone formation of the dogs was markedly accelerated, and bone resorption was significantly reduced compared with the untreated dogs or those only treated with autogenous iliac bone. The treatment with RME evidently made the bone trabecula more abundant and the area of bone formation larger. Three-dimensional finite element analysis showed that the clinical effect can be achieved by using canine teeth as the loaded teeth and applying force of 10 MPa. Conclusion: Rapid maxillary expansion after bone grafting had a positive effect on osteogenesis in a canine model of alveolar cleft.
- Subjects
MAXILLA surgery; ALVEOLAR process surgery; BIOLOGICAL models; FINITE element method; STAINS &; staining (Microscopy); BONE growth; ANIMAL experimentation; CLEFT palate; ALVEOLAR process; MAXILLA; CLEFT lip; AUTOGRAFTS; TREATMENT effectiveness; COMPARATIVE studies; STATISTICAL sampling; COMPUTED tomography; BONE grafting; DOGS; EVALUATION
- Publication
Cleft Palate Craniofacial Journal, 2022, Vol 59, Issue 4, p442
- ISSN
1055-6656
- Publication type
Article
- DOI
10.1177/10556656211018950