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The fate of developing teeth in mandibular lengthening by distraction: an experimental study.
- Source :
-
Journal of cranio-maxillo-facial surgery : official publication of the European Association for Cranio-Maxillo-Facial Surgery [J Craniomaxillofac Surg] 2001 Apr; Vol. 29 (2), pp. 94-9. - Publication Year :
- 2001
-
Abstract
- Purpose: The purpose of this study was to observe developing teeth in a lengthened mandible after distraction.<br />Material: Ten mongrel dogs with deciduous dentitions were used.<br />Methods: A corticotomy was carefully made around a tooth bud and the external distractor (Orthofix M-100) was connected. After a 5-day latent period, distraction was started at a rate of 0.75 mm per day for 10 consecutive days. Then, the lower jaw was stabilized by an external fixation to allow ossification. While the operation was performed on the left side (Distraction group), the contralateral side was studied for comparison (Control). In addition, a corticotomy, artificial fracture and external fixation were carried out to confirm the influence of the operation (Fracture group). Then macroscopic, radiographic and histological evaluations were carried out.<br />Results: In the Distraction group, the space between the wall of the dental follicle and the crown expanded as distraction began. The end of the calcified root became wider and irregular during the distraction period, and finally, the apex closed. In the Fracture group, the teeth erupted although slight alterations of the root shape were observed in association with the operation period.<br />Conclusion: The root became irregular, but the teeth erupted within the distraction area.
- Subjects :
- Animals
Dental Sac diagnostic imaging
Dental Sac pathology
Dental Sac physiopathology
Dogs
External Fixators
Fracture Fixation instrumentation
Mandible diagnostic imaging
Mandible pathology
Mandibular Fractures diagnostic imaging
Mandibular Fractures physiopathology
Osteogenesis
Osteotomy methods
Radiography
Tooth Apex diagnostic imaging
Tooth Apex pathology
Tooth Apex physiopathology
Tooth Calcification physiology
Tooth Crown diagnostic imaging
Tooth Crown pathology
Tooth Crown physiopathology
Tooth Eruption physiology
Tooth Germ pathology
Tooth Root diagnostic imaging
Tooth Root pathology
Tooth Root physiopathology
Mandible surgery
Odontogenesis physiology
Osteogenesis, Distraction instrumentation
Osteogenesis, Distraction methods
Tooth Germ physiopathology
Subjects
Details
- Language :
- English
- ISSN :
- 1010-5182
- Volume :
- 29
- Issue :
- 2
- Database :
- MEDLINE
- Journal :
- Journal of cranio-maxillo-facial surgery : official publication of the European Association for Cranio-Maxillo-Facial Surgery
- Publication Type :
- Academic Journal
- Accession number :
- 11465440
- Full Text :
- https://doi.org/10.1054/jcms.2000.0191