원저 : 가토 하악골 골신장 후 맥동전자기장이 조기 골경화에 미치는 효과에 대한 연구
Original Articles : Effect of Pulsed Electromagnetic Field Stimulation on the Early Bone Consolidation After Distraction Osteogenesis in Rabbit Mandible Model
황경균, 조태형, 김인숙, 송윤미, 김도균, 한성희, 황순정,
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황경균 ( Hwang Kyung-Gyun ) - 한양대학교 의과대학 치과학교실 구강안면외과
조태형 ( Cho Tae-Hyung ) - 서울대학교 치학연구소
김인숙 ( Kim In-Sook ) - 서울대학교 치학연구소
송윤미 ( Song Yun-Mi ) - 서울대학교 치학연구소
김도균 ( Kim Do-Kyun ) - 서울대학교 치과대학 구강악안면외과학교실
한성희 ( Han Sung-Hee ) - 서울대학교 치과대학 구강악안면외과학교실
황순정 ( Hwang Soon-Jung ) - 서울대학교 치과대학 구강악안면외과학교실
KMID : 0360120070290020123
Abstract
Intoduction: Distraction osteogenesis is widely used as for bone lengthening in patients with maxillofacial deformity and alveolar bone atrophy. One of the major problems in distraction osteogenesis is long consolidation period for 2-3 months, in which the devices have to be fixed on the bone to prevent relapse. It results in scar formation on the face, disturbance of mastication and speech. This study was performed to evaluate the stimulating effect of pulsed electromagnetic field on the early bone consolidation in distraction osteogenesis.
Materials and Methods: Total 10 rabbit were used (5 for control group, 5 for experimental group). A vertical osteotomy in the mandibular body was performed and the distraction device was fixed. After 5 days distraction was done 1mm per a day for 7 days. A pulsed electromagnetic field (38 Gauss, 60 Hz) was applied for 8 hours per day and it continued for 5 days immediately after distraction in the experimental group. Both groups were sacrificed after 2 weeks. Histological specimens with HandE and Masson Trichrome staining were made and histomorphometrically analysed with image analyser.
Results: The device for distraction osteogenesis was displaced in one animal for each group, therefore, only four animals in both groups were evaluated. In both groups, a new bone formation was observed in the distracted area after 2 weeks. The bone formation was enhanced in the experimental groups (31.76+/- 8.68%) compared with control group (9.94+/-3.23%), its difference was statistically significant (p<0.001).
Conclusion: This study suggests that electrical stimulation with electromagnectic field may be effective in the early bone formation after distraction osteogenesis. Further studies with large number of animals are needed before clinical application.
키워드
Distraction osteogenesis;Electromagnetic field;Bone consolidation
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