Sarris Spyridoula, Tahmassebi Jinous F, Duggal Monty S, Cross Ian A
Leeds Dental Institute, Leeds, England, UK.
Dent Traumatol. 2008 Feb;24(1):79-85. doi: 10.1111/j.1600-9657.2006.00485.x.
The aim of this pilot study was to evaluate the clinical efficacy of mineral trioxide aggregate (MTA) as an apexification material when used in non-vital immature permanent incisors in children. Fifteen children with a mean age of 11.7 years and 17 non-vital permanent incisors were ajudged suitable for inclusion. Standard endodontic procedures were followed and an apical plug of 3-4 mm was created by using MTA after a calcium hydroxide intracanal dressing had been applied for at least 1 week. Final obturation was completed by using thermoplastisized Gutta-Percha (Obtura II) at least 1 week following MTA placement. Subjects were reviewed clinically and radiographically at 3-month intervals. Mean follow-up time for MTA was 12.53 months (+/-2.94 SD). Of the total of 17 teeth treated, MTA placement was considered to be adequate in 13 teeth. The procedure showed clinical success in 94.1% of the cases, radiographic success was found to be 76.5% and in further three cases (17.6%) the outcome was considered to be uncertain. This is one of the very few studies that have reported the out coming of MTA as an apexification material in children with non-vital teeth and incomplete root development. However, larger clinical studies are required to evaluate the long-term success of this procedure.
这项初步研究的目的是评估三氧化矿物凝聚体（MTA）作为根尖诱导成形材料用于儿童非活髓未成熟恒切牙时的临床疗效。15名平均年龄为11.7岁的儿童和17颗非活髓恒切牙被判定适合纳入研究。遵循标准的牙髓治疗程序，在应用氢氧化钙进行根管内封药至少1周后，使用MTA制作3 - 4毫米的根尖充填物。在放置MTA至少1周后，使用热塑牙胶（Obtura II）完成最终充填。每3个月对受试者进行临床和影像学检查。MTA的平均随访时间为12.53个月（±2.94标准差）。在总共治疗的17颗牙齿中，13颗牙齿的MTA放置被认为是合适的。该治疗方法在94.1%的病例中显示出临床成功，影像学成功率为76.5%，另有3例（17.6%）结果不确定。这是极少数报道MTA作为根尖诱导成形材料用于非活髓且牙根发育不全儿童的研究之一。然而，需要更大规模的临床研究来评估该治疗方法的长期成功率。
