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首页> 外文期刊>Journal of Lasers in Medical Sciences >The 808 nm Laser-Assisted Surgery as an Adjunct to Orthodontic Treatment of Delayed Tooth Eruption
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The 808 nm Laser-Assisted Surgery as an Adjunct to Orthodontic Treatment of Delayed Tooth Eruption

机译：808 nm激光辅助手术可作为正畸治疗延迟性牙齿爆发的辅助手段

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Introduction: Failure of teeth to erupt from gingival tissues at usual developmental time is called delayed tooth eruption (DTE). Delayed tooth eruption lead to prolonged fixed orthodontic treatment and its eventual complications. The purpose of the present study was to evaluate the effect of laser-assisted (808 nm) surgical uncovering, on the tooth emergence and orthodontic treatment of DTE. Methods: A total of 16 orthodontic patients were included in this study and were equally assigned to an experimental and a control group. Subjects for experiment consisted of eight patients (6 girls and 2 boys) with a mean age of 14±0.9 years. All patients exhibited delayed second premolar eruption. The laser wavelength was 810 nm and it was set in a continuous wave mode at a power output of 1.6 watt with a 0.3-mm diameter fiber tip. When the target tissue was sufficiently anesthetized, the tip was directed at an angle of 10 to 20 degrees to the tissue (light contact mode); and was applied continuously for approximately 12 Seconds until an acceptable tooth exposure area was visible. The facial axis of the clinical crown (FACC) line represents the most prominent portion of the facial central lobe for premolars. All orthodontic brackets are aligned along this reference and are located on FA (Facial Axis) point. The standard for adequate tooth eruption was the accessibility of facial axis of the clinical crown (FACC) for bonding the brackets. Data gathered from the patients were statistically surveyed and compared by means of Tukey’s Test and Analysis of Variance (ANOVA). Results: All patients showed good gingival status, no significant bleeding during or immediately after the surgery, and acceptable level of healing after laser surgery. The biologic width of the teeth was preserved and no violation of this important periodontal parameter was observed. The average time for accessing the FA point in experimental group was 11±1.1 weeks and the mentioned period was increased to 25±1.8 weeks in control group. The data analysis showed that in patients with DTE, laser intervention significantly accelerated tooth eruption (P & 0.05). Conclusion: Laser-assisted surgical removal of the fibrous tissue over erupting premolars (DTE) with appropriate irradiation parameters appears to be a promising adjunct to orthodontic treatment for bringing the premolar to the aligned and leveled dental arch.
机译：简介：在正常发育时牙齿未能从牙龈组织喷发的现象称为延迟性牙齿萌出（DTE）。牙齿萌发的延迟会导致长期固定的正畸治疗及其最终并发症。本研究的目的是评估激光辅助（808 nm）手术揭露对DTE牙齿萌发和正畸治疗的影响。方法：本研究共纳入16名正畸患者，并将其平均分为实验组和对照组。实验对象包括八名患者（6名女孩和2名男孩），平均年龄为14±0.9岁。所有患者均表现出延迟的第二磨牙前爆发。激光波长为810 nm，并设置为连续波模式，功率输出为1.6瓦，光纤尖端直径为0.3毫米。当目标组织充分麻醉后，尖端与组织成10至20度的角度对准（光接触模式）。并连续施加约12秒，直到可见可接受的牙齿暴露区域。临床牙冠（FACC）线的面轴代表前磨牙的面部中央叶的最突出部分。所有正畸托槽均沿该参考对齐，并位于FA（面轴）点上。适当萌发牙齿的标准是可将临床牙冠的面轴（FACC）伸入托槽内。从患者收集的数据经过统计调查，并通过Tukey的方差检验和分析（ANOVA）进行了比较。结果：所有患者均显示良好的牙龈状态，术中或术后无明显出血，激光手术后的愈合水平可接受。牙齿的生物学宽度得以保留，未观察到违反此重要牙周参数的情况。实验组平均接近FA点的时间为11±1.1周，对照组为25±1.8周。数据分析表明，在DTE患者中，激光干预显着加速了牙齿萌发（P ＜0.05）。结论：用适当的照射参数，通过激光辅助手术切除前磨牙（DTE）上的纤维组织，似乎是将正磨牙带到对齐且水平的牙弓的正畸治疗的有希望的辅助手段。

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