牙周致病菌在正畸患者取出的微型种植体表面。
Periodontopathogens around the surface of mini-implants removed from orthodontic patients.
机构信息
Department of Orthodontics, School of Dentistry, University of São Paulo, São Paulo, Brazil.
出版信息
Angle Orthod. 2012 Jul;82(4):591-5. doi: 10.2319/081011-506.1.
OBJECTIVE
To verify if mini-implant mobility is affected by the presence of periodontopathogens, frequently associated with peri-implantitis.
MATERIALS AND METHODS
The surfaces of 31 mini-implants used for skeletal anchorage in orthodontic patients were evaluated. Polymerase chain reaction was used for identification of the presence of DNA from three different periodontopathogens ( P. intermedia [ Pi ], A. actinomycetemcomitans [ Aa ], and P. gingivalis [ Pg ]) in 16 mini-implants without mobility (control group) and 15 mini-implants with mobility (experimental group).
RESULTS
The results showed that Pi was present in 100% of the samples, from both groups: Aa was found in 31.3% of the control group and in 13.3% of the experimental group. Pg was detected in 37.4% of the control group and in 33.3% of the experimental group. The Fisher exact test and the odds ratio (OR) values for Aa and Pg (OR = 0.34; 95% confidence interval [CI]: 0.05-2.10 and OR = 0.61; 95% CI: 0.13-2.79, respectively) showed no significant association (P > .05) between the periodontopathogens studied and the mobility of the mini-implants.
CONCLUSIONS
It can be concluded that the presence of Aa , Pi , and Pg around mini-implants is not associated with mobility.
目的
验证微种植体的动度是否受牙周致病菌的影响，这些致病菌常与种植体周围炎有关。
材料和方法
评估了 31 个用于正畸患者骨骼锚固的微种植体的表面。聚合酶链反应用于鉴定来自三种不同牙周致病菌（中间普氏菌[Pi]、伴放线放线杆菌[Aa]和牙龈卟啉单胞菌[Pg]）的 DNA 在 16 个无动度的微种植体（对照组）和 15 个有动度的微种植体（实验组）中的存在情况。
结果
结果显示，两组中 Pi 的存在率均为 100%：对照组中 Aa 的检出率为 31.3%，实验组为 13.3%。对照组中 Pg 的检出率为 37.4%，实验组为 33.3%。Fisher 确切检验和 Aa 和 Pg 的比值比（OR）值（OR = 0.34；95%置信区间[CI]：0.05-2.10 和 OR = 0.61；95% CI：0.13-2.79）均显示研究的牙周致病菌与微种植体的动度之间无显著相关性（P ＞.05）。
结论
可以得出结论，微种植体周围 Aa、Pi 和 Pg 的存在与动度无关。
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