Scarano Antonio, Degidi Marco, Iezzi Giovanna, Petrone Giovanna, Piattelli Adriano
Researcher, Dental School, University of Chieti, Pescara, Italy.
Clin Implant Dent Relat Res. 2006;8(4):218-22. doi: 10.1111/j.1708-8208.2006.00022.x.
Primary stability has a relevant role in the long-term success of dental implants. A quantitative method for the measurement of implant stability has been introduced (resonance frequency analysis [RFA]). Information about the significance of RFA measurements and about the relationship between RFA values and their association with implant osseointegration, success, or failure is important from a clinical point of view.
The aim of the present histological and histomorphometric study was to see if a correlation existed between the bone-implant contact (BIC) percentage of retrieved human implants and RFA values.
Seven implants inserted in the posterior mandible, with a sandblasted and acid-etched surface and retrieved after a 6-month period, were evaluated in the present study. These seven implants had been retrieved for different causes. All these implants were submerged and were retrieved with a 5-mm trephine bur and immersed in 10% buffered formalin to be processed for histology.
A statistically significant correlation could be detected between implant stability quotient and BIC (p=.016).
Even if the relationship between bone structure and RFA is still not fully understood, in our study, a statistically significant correlation was found between RFA and BIC values. Further studies are needed to evaluate a correlation of RFA and BIC in human implants retrieved after a range of healing periods.
初期稳定性在牙种植体的长期成功中起着重要作用。一种用于测量种植体稳定性的定量方法已被引入（共振频率分析[RFA]）。从临床角度来看，了解RFA测量的意义以及RFA值之间的关系及其与种植体骨结合、成功或失败的关联非常重要。
本组织学和组织形态计量学研究的目的是观察回收的人类种植体的骨-种植体接触（BIC）百分比与RFA值之间是否存在相关性。
本研究评估了7枚植入下颌后部、表面经过喷砂和酸蚀处理且在6个月后取出的种植体。这7枚种植体因不同原因被取出。所有这些种植体均为潜入式，用5毫米环钻取出，浸入10%缓冲甲醛中进行组织学处理。
种植体稳定性商数与BIC之间存在统计学上的显著相关性（p = 0.016）。
即使骨结构与RFA之间的关系仍未完全明了，但在我们的研究中，RFA与BIC值之间发现了统计学上的显著相关性。需要进一步研究来评估在一系列愈合期后取出的人类种植体中RFA与BIC的相关性。
