The Treatment of Dental Pit and Fissure Caries by a Er : YAG Laser

申请人回忆了修复程序，该程序通过应用Er：1999年研制成功窝沟激光去龋接触尖，并进行了切割效率和辐照特性的试验。茨城检验了试制芯片所需的性能和辐照特性，以及KATAOKA和OKAGAMI的产品。以拔除的人牙和牛牙为样本评价了实验尖的基本特征，并于2000年对使用该尖制备的窝沟腔的修复过程进行了修复材料和方法的研究。目的：观察该实验尖去除窝沟龋的效果，并以低粘度复合树脂或Compomer作为充填材料进行充填。采用激光压入法评价充填体的封闭性。激光制备的腔体为窄锥形。空气涡轮机和激光器所形成的空腔，其充填材料的密封能力没有差别，2001年我们在此基础上检验了操作方法。通过临床应用，观察术后病程及疗效，认为Er：YAG激光使用实验针尖及低粘性充填材料治疗窝沟龋是可行的，临床应用目前为术后病程观察期或短期，远期疗效未见报道。因此，有必要增加前瞻性和病例数，并对临床效果进行评价.

The applicant recollected the repairing procedure which applied selective removal of dental caries and cavity preparation by the application of the Er : YAG laser, and for the purpose of the establishment of the technique, operative method, practicability, this study was carried out.In 1999, laser contact tip for the caries removal of pit and fissure was developed, and the examination for cutting efficiency and characteristics of the irradiation was carried out. Ibarakiki examined the performance and irradiation characteristics necessary for the trial manufacture chip, and it products by KATAOKA and OKAGAMI. The basic characteristic of the experimental tip was to evaluated with extracted human and bovine tooth as a sample.In 2000, the restorative procedure of the cavity in the pit and fissure prepared using this tip was examined on restorative material and method. It was to examine the effectiveness of the experimental tip in the removal of dental pit and fissure caries and filling by the restoration with low viscous composite resin or Compomer as a filling material. We evaluated the sealing ability of the restorative filled the cavity it spared by laser used die penetration test. The cavity prepared with the laser was a narrow cone shaps. There is no difference in the sealing ability of the filling material between cavities formed by the air turbine and the laser.The 2001 we examined the operative method was based from got result. It was applied to the clinic, and postoperative course and result were examined.It is suggested that the treatment of dental pit and fissure caries is possible with Er: YAG lasers using the experimental tip and low viscous filling materials.The clinical application, they are postoperative course observation period or short term at present, and per the long-term progress, it did not obtained. It seems to be necessary that it increases future and case and evaluates the clinical result.