기능적 부하 후 임플란트 주변의 골 흡수에 대한 방사선학적 연구
STUDY ON RADIOGRAPHIC EVALUATION OF MARGINAL BONE LOSS AROUND OSSEOINTEGRATED IMPLANT AFTER FUNCTIONAL LOADING
최수진, 지영덕, 고세욱,
소속 상세정보
최수진 ( Choi Su-Jin ) - 원광대학교 산본치과병원 구강악안면외과학교실
지영덕 ( Chee Young-Deok ) - 원광대학교 산본치과병원 구강악안면외과학교실
고세욱 ( Koh Se-Wook ) - 원광대학교 산본치과병원 구강악안면외과학교실
KMID : 0355620090350040240
Abstract
Purpose: The purpose of this study was to evaluate marginal bone loss to the bone crest functionally loaded for up to eighteen months and also with regard to other variables of interest.
Materials and Methods : 135 endosseous implants(GS II, Osstem, South Korea) were placed in 35 patients. The design of GS II implant is straight with the microthread. Radiographic examinations were conducted at baseline (implant loading) and 3, 6, 9, 12 and 18 months after loading. Marginal bone level measurement was made from the reference point to the lowest observed point of contact of the marginal bone with the fixture. The reference point of the fixture was the border between the blasted surface and machined surface of the fixture.
Results: Implants were on function for a mean 12.7 months(range, 3?18 months). For the 56 maxillary and 79 mandibular implants, mean marginal bone loss was 0.68 mm and 0.70 mm. Implants placed maxillary posterior area displayed more crestal bone loss than the other position. The difference between mesial and distal bone levels was statistically significant (p<0.05) with respective means of 0.51 mm and 0.62 mm. Also, The difference between bone graft group and no-bone graft group was statistically significant(p<0.05) with respective means of 0.38 mm and 0.66 mm. But no statistically significant influence of sex, type of surgery(one or two stage surgery), the implant length was observed(p>0.05).
Conclusion: This study indicates the amount of marginal bone loss around implant has maintained a relative stable during follow-up periods.
키워드
marginal bone loss;implant design;microthread
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