Kutkut Ahmad, Andreana Sebastiano, Monaco Edward
Department of Oral Health Practice, Division of Restorative Dentistry, University of Kentucky, College of Dentistry, Lexington, KY 40536, USA.
Department of Restorative Dentistry, State University of New York at Buffalo, School of Dental Medicine, Buffalo, NY, USA.
J Int Acad Periodontol. 2013 Oct;15(4):113-24.
The aim of this report was to clinically and radiographically evaluate changes to the hard and soft tissues around implants placed in extraction sockets grafted with medical grade calcium sulfate hemihydrate (MGCSH) mixed with platelet-rich plasma (PRP) and a collagen resorbable plug after one year of function.
This evaluation was part of a previous study conducted to evaluate extraction socket grafts. Fourteen subjects out of 16 were evaluated. After tooth extraction, eight subjects received MGCSH mixed with PRP in the extraction sockets (test group), and six subjects received collagen resorbable plug dressing material (control group). After three months of bone healing, dental implants were placed. Three months after implant installation, provisional restorations were placed and implants were loaded in function for one month followed by definitive restorations. Follow-up examinations and intraoral digital radiographs were made at baseline and one year after definitive restorations to evaluate the marginal bone level in each subject.
At the one-year follow-up, the survival and success rate was 100% for all implants. There was no statistically significant difference in the amount of vertical bone loss between groups after 1 year (p > 0.05). For the test group, there was a mean mesial bone loss of -0.8 +/- 0.6mm and a mean distal bone loss of -0.5 +/- 0.4mm. For the control group, there was a mean mesial bone loss of -1.1 +/- 0.7mm and a mean distal bone loss of -0.6 +/- 0.6mm.
At the one-year follow-up, the implant placement in grafted sockets was not affected by the type of the graft material. Implants placed in sockets grafted with MGCSH mixed with PRP showed less marginal bone loss after one year in comparison to those with collagen resorbable grafts.
本报告旨在从临床和影像学角度评估植入用医用级半水硫酸钙（MGCSH）与富血小板血浆（PRP）混合及胶原可吸收塞子移植的拔牙窝内种植体周围软硬组织在功能行使一年后的变化。
本评估是先前一项评估拔牙窝移植的研究的一部分。对16名受试者中的14名进行了评估。拔牙后，8名受试者在拔牙窝内植入MGCSH与PRP的混合物（试验组），6名受试者植入胶原可吸收塞子敷料材料（对照组）。骨愈合三个月后植入牙种植体。种植体植入三个月后，放置临时修复体，种植体行使功能一个月，随后进行最终修复。在基线以及最终修复一年后进行随访检查和口腔内数字X线片拍摄，以评估每位受试者的边缘骨水平。
在一年的随访中，所有种植体的存活率和成功率均为100%。一年后两组间垂直骨吸收量无统计学显著差异（p>0.05）。试验组近中骨平均吸收量为-0.8±0.6mm，远中骨平均吸收量为-0.5±0.4mm。对照组近中骨平均吸收量为-1.1±0.7mm，远中骨平均吸收量为-0.6±0.6mm。
在一年的随访中，移植牙槽窝内的种植体放置不受移植材料类型的影响。与胶原可吸收移植的种植体相比，植入MGCSH与PRP混合移植牙槽窝内的种植体在一年后边缘骨吸收较少。
