Shibli Jamil Awad, Grassi Sauro, de Figueiredo Luciene Cristina, Feres Magda, Iezzi Giovanna, Piattelli Adriano
Department of Periodontology, Dental Research Division, Guarulhos University, Guarulhos, São Paulo, Brazil.
Implant Dent. 2007 Sep;16(3):252-9. doi: 10.1097/ID.0b013e3180de4d64.
The aim of this study was to evaluate the influence of oxidized surface on bone-to-implant contact percentage (BIC%) as well as the bone density within the threads area (BD%) in human bone after 2 months of unloaded healing.
Seven subjects (mean age 45.57 +/- 10.45 years) received 2 micro-implants each during conventional implant surgery in the posterior maxilla. The implants that presented turned and oxidized surfaces served as control and test, respectively. After the healing period, the implants and the surrounding tissue were removed and prepared for ground sectioning and analysis.
Two turned implants were found to be clinically unstable at the time of retrieval. Histometric evaluation showed that the mean of BIC% was 17.40 +/- 14.16% and 32.19 +/- 15.68% to turned and oxidized surfaces, respectively. The BD% was 22.13 +/- 19.06% for turned surface and 50.40 +/- 18.35% for oxidized surface.
The histologic data from this preliminary study suggest that the oxidized micro-implants surface presented better mean values of BIC% and BD% than turned micro-implants after a short healing time.
本研究旨在评估在2个月的无负载愈合后，氧化表面对人骨中骨与种植体接触百分比（BIC%）以及螺纹区域内骨密度（BD%）的影响。
7名受试者（平均年龄45.57±10.45岁）在进行上颌后牙区常规种植手术时，每人植入2枚微型种植体。呈现车削和氧化表面的种植体分别作为对照和测试对象。愈合期结束后，取出种植体及周围组织，准备进行磨片切片和分析。
在取出时发现2枚车削表面的种植体临床不稳定。组织计量学评估显示，车削表面和氧化表面的BIC%平均值分别为17.40±14.16%和32.19±15.68%。车削表面的BD%为22.13±19.06%，氧化表面的BD%为50.40±18.35%。
这项初步研究的组织学数据表明，在较短的愈合时间后，氧化微型种植体表面的BIC%和BD%平均值比车削微型种植体更好。
