Meynardi F, Pasqualini M E, Rossi F, Dal Carlo L, Nardone M, Baggi L
Private practice, Mondovi, Italy.
Private practice, Milan, Italy.
Oral Implantol (Rome). 2017 Feb 14;9(Suppl 1/2016 to N 4/2016):10-20. doi: 10.11138/orl/2016.9.1S.010. eCollection 2016 Jan-Mar.
To assess the changes in bacterial profile along the transmucosal path of healing screws placed immediately after insertion of two-piece endosseus implants during the 4-month osseointegration phase, in absence of functional load.
Two site-specific samples were collected at the peri-implant mucosa of the healing screws of 80 two-piece implants, for a total of 640 samples. Implants placement was performed following a single protocol with flapless technique, in order to limit bacterial contamination of the surgical site. Identical healing screws (5 mm diameter/4 mm height) were used for each of the 80 implants. During the 4 months of the study, the patients followed a standard oral care regimen with no special hygiene maneuvers at the collection sites.
The present research documents that during the 4-month period prior to application of function load the bacterial profile of all sites exhibited a clear prevalence of cocci at the interface between implant neck and osteoalveolar crest margin.
A potentially pathogenic bacterial flora developed only along the peri-implant transmucosal path.
评估在无功能负荷情况下，两段式骨内种植体植入后立即放置的愈合螺丝在4个月骨结合期内沿跨黏膜路径的细菌谱变化。
在80颗两段式种植体的愈合螺丝的种植体周围黏膜处采集两个特定部位的样本，共640个样本。种植体植入采用单一方案及不翻瓣技术，以限制手术部位的细菌污染。80颗种植体均使用相同的愈合螺丝（直径5毫米/高度4毫米）。在研究的4个月期间，患者遵循标准口腔护理方案，在采集部位不进行特殊卫生操作。
本研究记录了在施加功能负荷前的4个月期间，所有部位的细菌谱在种植体颈部与牙槽骨嵴边缘之间的界面处均显示球菌明显占优势。
仅沿种植体周围跨黏膜路径形成了潜在致病性细菌菌群。
