Kim Donghyuk, Kim Hyunjung, Kim Hee-Sun
Department of Mechanical Engineering, Ajou University, Suwon-si, Gyeonggi-do, Korea.
Department of Dentistry, SMG_SNU Boramae Medical Center, Seoul, Korea.
Int J Numer Method Biomed Eng. 2025 Sep;41(9):e70080. doi: 10.1002/cnm.70080.
Because of tooth decay and loss, many people use dental implants as tooth replacements. However, careless management can trigger an inflammatory reaction to an implant. Recently, various studies have been conducted on the sterilization and purification of implant surfaces using diodes, Er:YAG lasers, and CO lasers. In this study, the therapeutic effect of photothermal therapy, a laser treatment method for peri-implantitis, was analyzed through numerical analysis based on heat-transfer theory. The numerical simulation conditions included laser power values in the range of 0.0-4.0 W, laser irradiation angles ranging from 15° to 40°, and laser irradiation durations of 100-500 s. In addition, the Arrhenius damage integral was used to quantitatively verify the therapeutic effects of the photothermal therapy. An analysis of the results confirmed that the Arrhenius thermal damage ratio and normal tissue Arrhenius thermal damage ratio decreased as the laser irradiation angle increased. However, for the same normal tissue Arrhenius thermal damage ratio, the effective laser intensity increased with the laser angle. Finally, the effectiveness of photothermal therapy for peri-implantitis under various conditions was confirmed. These results are expected to optimize the clinical treatment of peri-implantitis in the future.
由于龋齿和牙齿缺失，许多人使用牙种植体来替代牙齿。然而，管理不当会引发对种植体的炎症反应。最近，已经开展了各种关于使用二极管、铒：钇铝石榴石激光和二氧化碳激光对种植体表面进行消毒和净化的研究。在本研究中，基于传热理论通过数值分析对光热疗法（一种用于种植体周围炎的激光治疗方法）的治疗效果进行了分析。数值模拟条件包括0.0 - 4.0 W范围内的激光功率值、15°至40°的激光照射角度以及100 - 500 s的激光照射持续时间。此外，使用阿累尼乌斯损伤积分来定量验证光热疗法的治疗效果。结果分析证实，随着激光照射角度增加，阿累尼乌斯热损伤率和正常组织阿累尼乌斯热损伤率降低。然而，对于相同的正常组织阿累尼乌斯热损伤率，有效激光强度随激光角度增加。最后，证实了光热疗法在各种条件下对种植体周围炎的有效性。这些结果有望在未来优化种植体周围炎的临床治疗。
