Marginal tissue response to different Implant neck design
배은경, 정문규, 차인호, 한동후,
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배은경 ( Bae Eun-Kyong ) - 연세대학교 치과대학 치과보철학교실
정문규 ( Chung Moon-Kyu ) - 연세대학교 치과대학 치과보철학교실
차인호 ( Cha In-Ho ) - 연세대학교 치과대학 구강악안면외과학교실
한동후 ( Han Dong-Hoo ) - 연세대학교 치과대학 치과보철학교실
KMID : 0362420080460060602
Abstract
Statement of Problem: Loss of the marginal bone to the first thread have been accepted but continuous effort have been made to reduce this bone loss by varying implant design and surface texture.
Purpose: This animal study has examined the histomorphometric variations between implants with micro-thread, micro-grooved and turned surfaced neck designs.
Material and Methods: Four mongrel dogs have been used the premolars removed and left to heal for three months. One of each implant systems with turned neck, micro-thread and micro-grooved were placed according to the manufacturers’protocol and left submerged for 8 and 12 weeks. These were then harvested for histological examination.
Results: The histologically all samples were successfully ossointegrated and active bone remodelling adjacent to implants. With the micro-grooved implants 0.40 mm and 0.26 mm of the marginal bone level changes were observed at 8 and 12 weeks respectively. The micro-threaded implants had changes of 0.79 mm and 0.56 mm at 8 and 12 weeks respectably. The turned neck designed implants had marginal bone level changes of 1.61 mm and 1.63 mm in 8 and 12 weeks specimens. A complex soft tissue arrangement could be observed against micro-threaded and micro-grooved implant surfaces.
Conclusion: Within the limitations of this study, it could be concluded that implants with micro-grooved had the least and the turned neck designed implants had the most changes in the marginal bone level. The textured implant surfaces affect soft tissue responses.
키워드
Micro texture;Marginal bone level;Implant design
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