The comparative study of guided bone regeneration using various of bone graft materials

The purpose of this study is to evaluate the superficial bony healing after guided bony regeneration using a various bone grafts. Four types of bone grafts were performed by one oral and maxillofacial surgeon to restore the defects around endosseous implants. Group 1 included the allografts using Regenaform(R). Group 2 included the autograft. Group 3 included the combined grafts using with autogenous symphysis bone and xenograft(BioOss(R)). Group 4 included the xenograft(BioOss(R)). After some heling period, superficial bone biopsy was performed with the surgical blade(#15) during the second surgery. Histologic and histomorphmetric examination were carried out by one pathologist. There was the most new bone formation in the group 3, next group 2. However, there were no statistically significant differences. All group except for group 4 showed favorable bone formation and remodeling.

Sinus bone graft using combination of autogenous bone and BioOss(R): comparison of healing according to the ratio of autogenous bone

We performed sinus bone graft using some amount of autogenous bone and BioOss(R) and covered the sinus window with Ossix(R) membrane in these case series. After 4 to 6 months after operation, histopathologic examinations of trephine core biopsy showed following results. 1. There were bone density of 39.2 percent to 41.2 percent four months after operation, and we could observe the favorable early new bone formation. 2. Active bony remodeling of woven and lamellar bone was observed during 4 to 6 months healing period. 3. There were no significant differences between two groups. And also there were no significant differences between 4 months and 6 months.