The effect of fibronectin-coated implant on canine osseointegration

PURPOSE: The purpose of this study was to characterize the osseointegration of the fibronectin-coated implant surface. METHODS: Sand-blasted, large-grit, acid-etched (SLA) surface implants, with or without a thin calcium phosphate and fibronectin coating, were placed in edentulous mandibles of dogs 8 weeks after extraction. All dogs were sacrificed forhistological and histomorphometric evaluation after 4- and 8-week healing periods. RESULTS: All types of implants were clinically stable without any mobility. Although the bone-to-implant contact and bone density of the SLA implants coated with calcium phosphate (CaP)/fibronectin were lower than the uncoated SLA implants, there were no significant differences between the uncoated SLA surface group and the SLA surface coated with CaP/fibronectin group. CONCLUSIONS: Within the limits of this study, SLA surfaces coated with CaP/fibronectin were shown to have comparable bone-to-implant contact and bone density to uncoated SLA surfaces.

A Retrospective study of the type of patients, the distribution of implant and the survival rate of Xive(R) implant / 대한치주과학회지

This study is an analysis of types of patients and distribution of implant site and survival rate of Xive(R) implant. The following results on patient type, implant distribution and survival rate were compiled from 324 implant cases of 140 patients treated at the periodontal dept. of Yonsei University Hospital and G dental clinic between February 2003 and April 2006. 1. There are no dissimilarities between men and women, with patients in their 30, 40, 50s accounting for 80% of patients and accounted for 82% of implant treatments; the largest share of patients and implant treatments. 2. Mn. posterior area accounted for 57% of implant treatments followed by Mx. posterior area(29%), Mx. anterior area(8%) and Mn. anterior area(6%). 3. Partial edentulous patients treated by single crown and bridge-type prosthesis accounted for 96% and fully edentulous patient accounted for the remaining 4%. 4. The major cause of tooth loss is periodontal disease, followed by dental caries, trauma and congenital missing. 5. The distribution of bone quality for maxillae was 54.2% for typeIII, followed by 30.8% for type II, 15% for typeIV and 0% for typeI. As for mandible, the distribution was 63% for typeII, followed by 34% for typeIII, 2.5% for typeI and 0.5% for typeIV. 6. The distribution of bone quantity for maxillae was 55% for type C, followed by 35% for type B, 8% for type D and 2% for type A. As for mandible, the distribution was 60% for type B, followed by 32% for type C, 7% for type A and 0% for type D. 7. The majority of implants were those of 9.5-13 mm in length(95%) and regular diameter in width(82%). 8. The total survival rate was 98%. The survival rate was 97% in the maxillae region and 99% in the mandible region. 9. The survival rate in typeI was 83%, in typeII was 99%, in typeIII was 97% and in typeIV was 100%. As for the bone quantity, the survival rate in type A and D(100%) was most, followed by type B(99%) and type C(96%). The results showed that Xive(R) implant could be used satisfactorily compare for the other implant system. But we most to approach carefully in certain extreme condition especially with poor bone quality and quantity.