A Clinical Study On The Autogenous Bone And Anorganic Bovine Bone In Combination With The Bioabsorbable Collagen Membranes For The Treatment Of Peri-implant Infrabony Defects

Purpose: This study went to research the absorbable collagen membrane combined with the autogenous bone and artificial bone for the treatment of the bone defect around implant. To evaluate the quality of the new bone tissue when use collagen membrane combined with a different bone graft material to treat the bone defect around implant. To obtain the best method that the absorbable collagen membrane combined with the different bone graft material for treatment of the bone defect around implant and to provide a more conveniently,valid technique for clinical treatment.Material and Method: The Bio-gide combined with the mixture of Bio-oss and autogenous, the Bio-gide combined with Bio-oss, Bio-gide combined with autogenous bone were divided into group I , group II and groupIII. Thirteen patients who had three (or above) areas resulted bone defect(fenestrated and dehiscence) around implant in the dental implant surgery was selected for this study, and select randomly three areas where bone defect around implant in the every case for test. Each area which was selected was grafted respectively, randomly group I material or group II material or groupIII material in operation. To measure the quality of new bone formation for various methods in same time and evaluate the treatment effect of various methods.Result: (1) The group I and the group II had the same quantity of the new bone. However, the quality of group I is strong and the new bone integrate tightly with implant to obtain osseointegration, which can be loading better. The quality of new bone in the group I is better than in the group II. Because Bio-oss absorbs slowly, the new bone in the group II mixed a lot of Bio-oss artificial bone particle, so the quantity of the new bone tissue in group II is still loose and soft and the new bone can not be loading better than in same time. It is inferior to the group I. (2) The quality of new bone in tests group like the groupIII, it s quality of new bone is enough and overlaid the bone defection and damage area completely. The thirteen implants in group I have no implants exposed again and have no area which bone defect around implant appears again at the 6th month. Meantime, because of new bone in group I reserve a few Bio-oss artificial bone grain, the valid space for the new bone growth was maintained in the future. Because of the characteristic...