Vassalli Massimo, Giannelli Marco
National Institute of Applied Optics, Largo E. Fermi 6, 50125 Firenze, Italy.
Ital J Anat Embryol. 2003 Oct-Dec;108(4):195-203.
Bacterial contamination of dental implants is considered the main cause of implant failure. Recently, the laser treatment of the implant surface has been proposed as an useful method for decontamination. In such a view, the present study was conducted to investigate the effects of a Nd:YAG laser on the surface morphology of a titanium dental implant by means of an atomic force microscope. We demonstrated that, when the pulse energy of the laser was kept below 30 mJ, independently from the pulse rate, the laser-treated specimens exhibited a qualitatively similar surface morphology when compared to the untreated titanium implants, suggesting that the implant surface was unaffected by the treatment, in these particular conditions. We also found that, by cooling the implant surface with an air flow? during laser irradiation, the mean temperature of the implant was maintained under 37 degrees C. All these data taken together suggest the possibility to use Nd:YAG laser for the treatment of failing dental implants.
牙种植体的细菌污染被认为是种植失败的主要原因。最近，有人提出对种植体表面进行激光处理是一种有效的去污方法。基于这种观点，本研究通过原子力显微镜研究了钕钇铝石榴石（Nd:YAG）激光对牙科钛种植体表面形态的影响。我们证明，当激光脉冲能量保持在30 mJ以下时，与脉冲频率无关，与未处理的钛种植体相比，经激光处理的标本在表面形态上定性相似，这表明在这些特定条件下，种植体表面未受该处理的影响。我们还发现，在激光照射期间通过气流冷却种植体表面，种植体的平均温度可保持在37摄氏度以下。综合所有这些数据表明，使用Nd:YAG激光治疗失败的牙种植体具有可能性。
