Ghoniem Neehal, Vaidyanathan Veena, Zealand Cameron M, Sushynski John M, Mettlach Sarah M, Botero Tatiana M, Majewski Robert F, Boynton James R, Hu Jan C-C
Department of Orthodontic and Pediatric Dentistry, University of Michigan School of Dentistry. She practices at Smile Builders Children's Dentistry, 838 Nordahl Road, Suite 145, San Marcos, CA 92069.
Department of Orthodontic and Pediatric Dentistry, University of Michigan School of Dentistry. She practices at Children's Dental Health Center, 966-C Park Street, Stoughton, MA 02072.
J Mich Dent Assoc. 2018 Apr;100(4):40-65.
Mineral Trioxide Aggregate (MTA) has been used in many endodontic procedures with success. We hypothesized that MTA as a pulpotomy medicament elicits outcomes no different than that of the diluted formocresol (DFC).
The purpose of this study was to compare the outcomes of grey MTA and DFC in primary molar pulpotomies at a teaching institution and a pediatric dental practice.
At the teaching institution, 206 primary molars of 122 children were enrolled. At 48-months, 20 teeth treated with MTA and 25 teeth treated with DFC, were available for evaluation. At the private practice, dental records of 245 primary molars of 68 patients were available for evaluation.
At 48 months, the results from both sites showed a radiographic success rate of 80 percent for DFC and 95 percent for MTA. The odds of radiographic failure were not affected by study sites. The Cox-regression analysis revealed that patient's age at the time of pulpotomy impacted the "hazard of exfoliation." Each year following the completion of DFC or MTA pulpotomy, there is a 4.6-times-more-likely chance for early exfoliation of the pulpotomized tooth.
Grey MTA is an acceptable alternative for primary molar pulpotomies.
矿物三氧化物凝聚体（MTA）已成功应用于许多牙髓治疗程序。我们假设，MTA作为一种活髓切断术药物，其治疗效果与稀释甲醛甲酚（DFC）无异。
本研究旨在比较在一所教学机构和一家儿童牙科诊所中，灰色MTA和DFC用于乳牙活髓切断术的治疗效果。
在教学机构，纳入了122名儿童的206颗乳牙。在48个月时，有20颗接受MTA治疗的牙齿和25颗接受DFC治疗的牙齿可供评估。在私人诊所，有68名患者的245颗乳牙的牙科记录可供评估。
在48个月时，两个地点的结果显示，DFC的影像学成功率为80%，MTA为95%。影像学失败的几率不受研究地点的影响。Cox回归分析显示，活髓切断术时患者的年龄会影响“乳牙早失风险”。在完成DFC或MTA活髓切断术后的每一年，接受活髓切断术的牙齿早期脱落的可能性增加4.6倍。
灰色MTA是乳牙活髓切断术的一种可接受的替代方法。
