CAJ | 학술논문

目的：评价即刻种植后植骨与否对种植体周围骨缺损愈合情况及种植体周围骨结合的影响。方法：拔除6只Beagle犬双侧下颌第一至第四前磨牙，近中根拔牙窝的近中壁制备（3～4）mm ×（3～4）mm ×（5～6）mm的骨缺损间隙，采用半口自身对照，一侧行不植骨即刻种植（A组），另一侧即刻种植并在缺损中植入Bio-Oss骨粉（B组），术后3个月处死动物，大体观察种植体周围骨缺损愈合情况及组织学观察种植体-骨结合率和新骨生成率。结果：种植术区软组织愈合良好，种植体无松动脱落，2组骨缺损区均已被新生骨充填，2组种植体周的骨结合率和新骨生成率无统计学差异。结论：即刻种植时伴有一定程度牙槽窝壁骨缺损，不植入骨粉情况下新生骨与种植体间也可以获得良好的骨结合。
목적：평개즉각충식후식골여부대충식체주위골결손유합정황급충식체주위골결합적영향。방법：발제6지Beagle견쌍측하합제일지제사전마아，근중근발아와적근중벽제비（3～4）mm ×（3～4）mm ×（5～6）mm적골결손간극，채용반구자신대조，일측행불식골즉각충식（A조），령일측즉각충식병재결손중식입Bio-Oss골분（B조），술후3개월처사동물，대체관찰충식체주위골결손유합정황급조직학관찰충식체-골결합솔화신골생성솔。결과：충식술구연조직유합량호，충식체무송동탈락，2조골결손구균이피신생골충전，2조충식체주적골결합솔화신골생성솔무통계학차이。결론：즉각충식시반유일정정도아조와벽골결손，불식입골분정황하신생골여충식체간야가이획득량호적골결합。
Objective:To study the osseointegration of implant in fresh extraction socket with or without bone grafting.Methods:In the mandibular premolar region of 6 beagle dogs,bone defect in the size of (3~4)mm ×(3~4)mm ×(5 ~6)mm on the mesial wall of the mesial root socket was made.On control side implants were installed immediately into the extraction sockets(group A).On an-other side Bio-Oss grafts and membrane(GBR)were placed following implantation(group B).All animals were sacrificed 3 months af-ter implantation,specimens were examined for histo-morphometric analysis of bone to implant contact and new bone formation.Results:No implant was loosening in the 2 groups.New bone was filled in the bone defect areas in 2 groups.No statistical difference of the per-centage of new bone formation and bone-to-implant contact ration(BIC)was observed between 2 groups.Conclusion:With the defect in a certain size on the root socket wall osseointegration may occur between the new bone and implant without bone transplantation.