Maxillofacial Plastic and Reconstructive Surgery
- Volume 23 Issue 4
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- Pages.324-331
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- 2001
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- 2288-8101(pISSN)
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- 2288-8586(eISSN)
EFFECT OF THE LATENCY PERIOD ON ALVEOLAR RIDGE DISTRACTION USING THE INTRAORAL DISTRACTION DEVICE IN DOGS
구내 신연장치를 이용한 치조골 신연에 미치는 잠복기의 영향
- Oh, Yu-Keun (Dept. of Oral & Maxillofacial Surgery, Dental Science Research Institite College of Dentistry, Chonnam National University) ;
- Oh, Hee-Kyun (Dept. of Oral & Maxillofacial Surgery, Dental Science Research Institite College of Dentistry, Chonnam National University) ;
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Ryu, Sun-Youl
(Dept. of Oral & Maxillofacial Surgery, Dental Science Research Institite College of Dentistry, Chonnam National University)
- Published : 2001.08.30
Abstract
The present study was aimed to investigate the effects of latency period on alveolar ridge distraction using the intraoral distraction device. Nine adult mongrel dogs of either sex, weighing about 15kg, were used. They were divided into 3-day, 5-day, and 7-day groups according to the latency period. The left upper and lower premolars and first molars were extracted. Twelve weeks after the extraction, an osteotomy was performed and the distraction device was applied. After the latency period, the distraction was applied at a rate of 1.2mm for 8 days. The distraction device was left in place for 2 weeks to allow consolidation and was then removed. The animals were sacrified at 8 weeks after completion of distraction and were examined macroscopically, radiographically, and histologically. After completion of the distraction, the alveolar crest protruded prominently, showing the vertical augmentation of the alveolar bone. Soft tissues were broken down after the 6th day of distraction in 3-day latency group, and premature union occurred on the 7th day of distraction in the 7-day latency group. The average distance was