Barikani Hamidreza, Rashtak Shadab, Akbari Soolmaz, Badri Samareh, Daneshparvar Niloufar, Rokn Amirreza
Dental Implant Research Center, Tehran University of Medical Sciences Tehran, Iran.
Dental Student, Tehran University of Medical Sciences Tehran, Iran.
J Dent (Tehran). 2013 Sep;10(5):449-55. Epub 2013 Sep 30.
The focus of this paper is to evaluate the influence of mechanical characteristics of the implant on primary stability in different bone types, based on resonance frequency analysis (RFA).
A number of 60 Nobel Biocare Replace Select TiUnit Tapered implants of two different lengths (10 mm and 13 mm) and three different widths as 3.4 mm (narrow platform (NP)), 4.3 mm (regular platform (RP)) and 5 mm (wide platform (WP)) were placed into two different groups of bone blocks. Bone blocks were different in bone quality, but similar to bone types D1 and D3. Immediately, after implant placement, implant stability quotient (ISQ) was measured using the Osstell mentor device.
ISQ values for implant placements in D1 bone were significantly higher than those for implants placed in D3 bone. In D1 bone, the implant length did not make any significant difference in primary stability; however, in D3 bone, the primary stability of the implant increased when longer implants were utilized. NP implants presented significantly lower ISQ values compared to the two wider implants.
In cases of low bone quality, the optimum increase in the implant length and diameter should be taken into account to achieve higher primary stability.
本文重点基于共振频率分析（RFA）评估种植体机械特性对不同骨类型中初期稳定性的影响。
将60颗诺贝尔生物科技Replace Select TiUnit锥形种植体分为两组植入骨块，这些种植体有两种不同长度（10毫米和13毫米）以及三种不同宽度，分别为3.4毫米（窄平台（NP））、4.3毫米（常规平台（RP））和5毫米（宽平台（WP））。骨块的骨质不同，但类似于D1和D3骨类型。种植体植入后，立即使用Osstell mentor设备测量种植体稳定性商数（ISQ）。
植入D1骨的种植体的ISQ值显著高于植入D3骨的种植体。在D1骨中，种植体长度对初期稳定性没有显著差异；然而，在D3骨中，使用较长种植体时种植体的初期稳定性会增加。与另外两种较宽的种植体相比，NP种植体的ISQ值显著更低。
在骨质较差的情况下，应考虑适当增加种植体长度和直径以实现更高的初期稳定性。
