En face optical coherence tomography investigation of apical microleakage after laser-assisted endodontic treatment
En face optical coherence tomography investigation of apical microleakage after laser-assisted endodontic treatment
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DOI：
10.1007/s10103-009-0680-5
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发表时间：
2010-09-01
影响因子：
2.1
通讯作者：
Podoleanu, Adrian Gh.
中科院分区：
文献类型：
--
作者：
Todea, Carmen;Balabuc, Cosmin;Podoleanu, Adrian Gh.
本研究的目的是评价980 nm和1,064 nm激光辅助根管治疗后，表面光学相干断层扫描（OCT）检测根尖微渗漏的潜力。使用90个人单根牙，其中一个直根管和封闭根尖。所有牙根均以根尖尺寸30和0.06锥度进行生物力学准备，达到工作长度。根据根管治疗方法，将牙齿分为三组，每组30个样本。组I接受980 nm二极管激光（3 W，0.01 s开启时间，0.01 s关闭时间，每次手术5 s，4次手术）;组II接受钕：钇铝石榴石（Nd：YAG）激光（1.5 W，15 Hz，每次手术5 s，4次手术）。第三组仅采用传统方法处理根管。所有患者均采用AH Plus根管充填剂和牙胶尖进行根管充填。一个正面OCT原型用于根尖微渗漏的调查。经单因素方差分析和表面OCT检查，激光组的缺损数量显著低于对照组（P < 0.005）。激光组之间无统计学差异（P = 0.049）。正面OCT成像证实，激光辅助根管治疗改善了根管充填的预后，并导致根尖微渗漏减少。
The aim of our study was to evaluate the potential of en face optical coherence tomography (OCT) for the detection of apical microleakage after 980 nm and 1,064 nm laser-assisted endodontic treatment. Ninety, human, single-rooted teeth with one straight root canal and closed apices were used. All roots were prepared biomechanically to the working length at an apical size 30 and 0.06 taper. The teeth were divided into three equal groups of 30 samples each, according to the treatment to be applied to the root canal. Group I received 980 nm diode laser (3 W, 0.01 s on time, 0.01 s off time, 5 s per procedure, four procedures); group II received neodymium:yttrium-aluminum-garnet (Nd:YAG) laser (1.5 W, 15 Hz, 5 s per procedure, four procedures). In group III the root canals were approached conventionally only. In all groups the root canal filling was performed with AH Plus endodontic sealer and gutta-percha points. An en face OCT prototype was used for the investigation of apical microleakage. According to one-way analysis of variance (ANOVA) and en face OCT, the number of defects in the laser groups was significantly lower (P < 0.005) than in the control group. No statistical differences were noted between the laser groups (P = 0.049). En face OCT imaging proved that laser-assisted endodontic treatment improved the prognosis of root canal filling and led to a reduction in apical microleakage.