The korean journal of orthodontics (대한치과교정학회지)
- Volume 20 Issue 1
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- Pages.23-45
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- 1990
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- 2234-7518(pISSN)
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- 2005-372X(eISSN)
THE EFFECTS OF FACIAL DENERVATION ON FACIAL MUSCLES AND BONES IN GROWING RABBITS
안면신경절제가 가토의 안면근육 및 안면골에 미치는 영향에 관한 연구
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Park, Young Guk
(Department of Orthodontics, College of Dentistry, Kyung Hee University) ;
- Lee, Ki Soo (Department of Orthodontics, College of Dentistry, Kyung Hee University)
- Published : 1990.03.30
Abstract
It is the aim of this study to determine the effects of facial denervation on physiological properties of facial muscles and facial bones in growing rabbits. Experimental animals of fifty two Oryctolagus cuniculus rabbits were employed. Unilateral dissection of facial nerve was carried out on twelve rabbits, bilateral dissection of facial nerve was made on another twelve rabbits and the other twenty rabbits were on unilateral dissection of facial nerve for the histochemical analyses. Six rabbits on the bilateral surgical sham operations and six rabbits of non-intervention served the control groups. EMG records of the orbicularis oris, buccinator and masseter muscles as well as lateral and dorsoventral cephalometric films were taken and analyzed at 0, 1, 2, 5 and 8 weeks respectively. The orbicularis oris, buccinator and masseter muscles of both sides were removed from the animals of the histochemistry group and muscle fibers were classified on the basis of histochemical staining for
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