Mandibular condensability and length contraction: an animal experimental study / 华西口腔医学杂志
West China Journal of Stomatology
;
(6): 16-18, 2004.
Article
in Chinese
| WPRIM
| ID: wpr-319071
ABSTRACT
<p><b>OBJECTIVE</b>To investigate the condensability of mandibular length.</p><p><b>METHODS</b>In six goats were used in the study. Corticotomy at right mandibular angles was performed via extral-oral accession. Special devices were applied to shorten the mandible by 0.5 mm per three days respectively.</p><p><b>RESULTS</b>1. Mandibular angles of the six goats were shorten by 0.8 cm to 1.3 cm respectively in 48 days to 78 days; 2. In spite of the lower ascending ramus moving forward and angles being blunt, the occlusion scarcely varied because of contralateral bite-lock; 3. X-ray demonstrated that, at first, bone density in contracted areas declined, and then increased gradually to almost normal density; 4. Under microscope there were three tissues layers from central to lateral within the bone gap fiber layer, cartilage layer and bone layer, and fiber layer gradually transform into cartilage layer with the fixed time. At the end of fixation they all transform into bone tissue.</p><p><b>CONCLUSION</b>Contraction osteogenesis is actually a process of compression, absorption and rebuilding. It is feasible that using contraction osteogenesis to shorten the mandible via cortcotomy.</p>
Full text:
Available
Index:
WPRIM (Western Pacific)
Main subject:
Osteotomy
/
Periosteum
/
Pressure
/
General Surgery
/
Goats
/
External Fixators
/
Mandibular Advancement
/
Oral Surgical Procedures
/
Mandible
/
Methods
Limits:
Animals
Language:
Chinese
Journal:
West China Journal of Stomatology
Year:
2004
Type:
Article
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