Noferesti Maryam, Darmiani Soheila, Rastegar Homa
Private Dentist, Birjand, Iran.
Department of Endodontics, Faculty of Dentistry, Birjand University of Medical Sciences, Birjand, Iran.
J Lasers Med Sci. 2024 Aug 5;15:e36. doi: 10.34172/jlms.2024.36. eCollection 2024.
Apical periodontitis is one of the common dental diseases. Microorganisms are the main reasons for these lesions; irrigations are used to remove them, but because of limited penetration, the rinsing agents may not always kill the microorganisms. Laser irradiation is effective in canal disinfection. The goal of this study was to compare the effect of calcium hydroxide (Ca(OH) ) and diode laser on the improvement of apical periodontitis following root canal retreatment (RCR). Twenty-four teeth of 19 patients with periapical lesions which needed RCR were divided into two groups (Ca(OH) and Ca(OH)+laser irradiation [LI]). In the first session, after gutta-percha removal, cleaning, and shaping, Ca(OH) was used for 10 days. In the second session, in the Ca(OH)+LI group, the irradiation utilizing a diode laser (using non-initiated 200-µm fiber, continuous wave (CW), power output of 1W) was done. The periapical radiographic healing was assessed before the retreatment and after 3-month and 6-month follow-ups by periapical index (PAI) Qrstavik. The quantitative data were analyzed (<0.05). The initial periapical lesion score was 3.75 and 3.88 in the Ca(OH) and Ca(OH)+LI groups, respectively. In the Ca(OH) and Ca(OH)+LI groups, 3 months after the RCR, the average periapical lesion score was 2.94 and 3.05, respectively. In the Ca(OH) and CA(OH)+LI groups, 6 months after the RCR, the average periapical lesion score was 1.80 and 1.75, respectively. No significant differences were found at the 3 and 6 months between the experimental groups. The diode laser can reduce the periapical lesion, but there was no significant difference between CA(OH)+LI and Ca(OH) at 3-month and 6-month follow-ups.
根尖周炎是常见的牙科疾病之一。微生物是这些病变的主要原因；冲洗用于清除它们，但由于渗透有限，冲洗剂可能无法总是杀死微生物。激光照射在根管消毒方面有效。本研究的目的是比较氢氧化钙（Ca(OH)₂）和二极管激光对根管再治疗（RCR）后根尖周炎改善的效果。19例需要RCR的根尖周病变患者的24颗牙齿被分为两组（Ca(OH)₂组和Ca(OH)₂ + 激光照射[LI]组）。在第一次就诊时，去除牙胶、清洁和预备根管后，使用Ca(OH)₂ 10天。在第二次就诊时，Ca(OH)₂ + LI组使用二极管激光进行照射（使用未启动的200-μm光纤，连续波（CW），功率输出为1W）。在再治疗前以及3个月和6个月随访后，通过根尖指数（PAI）Qrstavik评估根尖周影像学愈合情况。对定量数据进行分析（<0.05）。Ca(OH)₂组和Ca(OH)₂ + LI组的初始根尖周病变评分别为3.75和3.88。在Ca(OH)₂组和Ca(OH)₂ + LI组中，RCR后3个月，根尖周病变平均评分分别为2.94和3.05。在Ca(OH)₂组和Ca(OH)₂ + LI组中，RCR后6个月，根尖周病变平均评分分别为1.80和1.75。实验组在3个月和6个月时未发现显著差异。二极管激光可减轻根尖周病变，但在3个月和6个月随访时，Ca(OH)₂ + LI组和Ca(OH)₂组之间无显著差异。
