Liu Jeng-fen
Yang Ming Medical University, Taiwan.
J Endod. 2006 May;32(5):404-7. doi: 10.1016/j.joen.2006.01.005.
The purpose of this study was to compare the effects of Nd:YAG laser pulpotomy to formocresol pulpotomy on human primary teeth. Patients with a primary tooth that required pulpotomy because of pulpal exposure to caries, were selected for this study. After removal of coronal pulpal tissue, Nd:YAG laser at 2 W, 20 Hz, 100 mJ or a 1:5 dilution of formocresol was introduced into the canal orifice for complete hemostasis. IRM paste was then placed over the pulp stump, and the tooth was restored either with composite resin or stainless steel crown. Sixty-eight teeth were treated with Nd:YAG laser and followed up for 6 to 64 months. Clinical success was achieved in 66 out of the 68 teeth (97 %), and 94.1 % were radiographically successful. In the control group, 69 primary molars were treated with formocresol and followed up for 9 to 66 months; 85.5 and 78.3% achieved clinical and radiographic success, respectively. The success rate of Nd:YAG laser pulpotomy was significantly higher than that of formocresol pulpotomy. The permanent successors of the laser-treated teeth erupted without any complications.
本研究的目的是比较钕钇铝石榴石（Nd:YAG）激光牙髓切断术与甲醛甲酚牙髓切断术对人类乳牙的治疗效果。本研究选取了因龋病导致牙髓暴露而需要进行牙髓切断术的乳牙患者。去除冠部牙髓组织后，将功率为2W、频率为20Hz、能量为100mJ的Nd:YAG激光或1:5稀释的甲醛甲酚引入根管口以实现完全止血。然后在牙髓残端放置IRM糊剂，并用复合树脂或不锈钢冠修复牙齿。68颗牙齿接受了Nd:YAG激光治疗，并随访6至64个月。68颗牙齿中有66颗（97%）获得临床成功，94.1%获得影像学成功。在对照组中，69颗乳磨牙接受了甲醛甲酚治疗，并随访9至66个月；临床成功率和影像学成功率分别为85.5%和78.3%。Nd:YAG激光牙髓切断术的成功率显著高于甲醛甲酚牙髓切断术。接受激光治疗牙齿的恒牙继承牙萌出时无任何并发症。
