Romero Marta, Herrero-Climent Mariano, Ríos-Carrasco Blanca, Brizuela Aritza, Romero Manuel María, Gil Javier
Department of Periodontology, School of Dentistry, Universidad de Seville, C/Avicena S/N, 41009 Seville, Spain.
Porto Dental Institute, Periodontology Department, Symmetrya Prothesis, Av. de Montevideu 810, 4150-518 Porto, Portugal.
J Clin Med. 2023 Jun 21;12(13):4190. doi: 10.3390/jcm12134190.
In the placement of dental implants, the primary fixation between the dental implant and the bone is of great importance and corresponds to compressive mechanical fixation that aims to prevent micromovement of the implant. The aim of this research was to determine the role of roughness and the type of dental implant (tissue-level or bone-level) in implant stability, measured using resonance frequency analysis (RFA) and insertion torque (IT). We analyzed 234 titanium dental implants, placed in fresh calf ribs, at the half-tissue level and half-bone level. The implant surface was subjected to grit-blasting treatments with alumina particles of 120, 300, and 600 μm at a projection pressure of 2.5 bar, resulting in three types of roughness. Roughness was determined via optical interferometry. The wettability of the surfaces was also determined. Implant stability was measured using a high-precision torquemeter to obtain IT, and RFA was used to determine the implant stability quotient (ISQ). The results show that rough surfaces with Sa values of 0.5 to 4 μm do not affect the primary stability. However, the type of implant is important; bone-level implants obtained the highest primary stability values. A good correlation between the primary stability values obtained via IT and ISQ was demonstrated. New in vivo studies are necessary to know whether these results can be maintained in the long term.
在牙种植体植入过程中，牙种植体与骨之间的初始固定非常重要，它对应于旨在防止种植体微动的压缩机械固定。本研究的目的是确定粗糙度和牙种植体类型（组织水平或骨水平）对种植体稳定性的作用，采用共振频率分析（RFA）和植入扭矩（IT）进行测量。我们分析了234颗钛牙种植体，将其植入新鲜小牛肋骨的半组织水平和半骨水平处。种植体表面用120、300和600μm的氧化铝颗粒在2.5巴的喷射压力下进行喷砂处理，从而产生三种粗糙度类型。粗糙度通过光学干涉测量法确定。还测定了表面的润湿性。使用高精度扭矩计测量植入扭矩以获得IT，并使用RFA确定种植体稳定性商数（ISQ）。结果表明，表面粗糙度平均高度（Sa）值为0.5至4μm的粗糙表面不会影响初始稳定性。然而，种植体类型很重要；骨水平种植体获得了最高的初始稳定性值。通过IT和ISQ获得的初始稳定性值之间显示出良好的相关性。有必要进行新的体内研究，以了解这些结果能否长期保持。
