Abbas Akhila, Kethineni Balaji, Puppala Ravindar, Birapu Uday C, Raghavendra Kumar J, Reddy Praveenkanth
Department of Pedodontics and Preventive Dentistry, SVS Institute of Dental Sciences, Mahabubnagar, Telangana, India.
Int J Clin Pediatr Dent. 2020 Nov-Dec;13(6):656-662. doi: 10.5005/jp-journals-10005-1853.
To compare the bacterial leakage of mineral trioxide aggregate (MTA) and biodentine when used as an apical plug in immature permanent teeth.
It was a randomized double-blind study. A total of 60 teeth were divided into 2 groups of MTA and biodentine, which were further divided into 2 subgroups ( = 30) each based on the apical plug thickness of 2 and 4 mm. The teeth were cleaned and shaped; root-end resection and canal preparation were done. Mineral trioxide aggregate and biodentine were mixed and filled as apical plugs of 2 or 4 mm thickness. was used to assess the bacterial leakage of the filled samples.
The comparison between the two groups was done by Chi-square test for categorical data. All values <0.05 were considered as statistically significant.
A 4 mm apical plug of biodentine showed the least amount of bacterial leakage followed by 2 mm MTA and 4 mm MTA. A 2 mm apical plug of biodentine showed the maximum bacterial leakage. But this was not statistically significant over a period of 3 months. There was a statistically significant difference ( value = 0.042) among the total number of samples that leaked in the 2 and 4 mm biodentine group.
Mineral trioxide aggregate and biodentine had a similar apical sealing ability. The apical sealing ability of biodentine at 4 mm thickness was greater than 2 mm thickness.
The apical leakage of the materials used in apexification is one of the main causes of endodontic failures in immature necrotic teeth. Materials like MTA and biodentine have overcome various drawbacks of calcium hydroxide as apexification material. The thickness of the apical plug plays an important role in preventing any microorganism from entering the periapical area, hence maintaining an adequate seal.
Abbas A, Kethineni B, Puppala R, Efficacy of MTA and Biodentine as Apical Barriers in Immature Permanent Teeth: A Microbiological Study. Int J Clin Pediatr Dent 2020;13(6):656-662.
比较矿物三氧化物凝聚体（MTA）和生物活性玻璃陶瓷用作年轻恒牙根尖屏障时的细菌渗漏情况。
这是一项随机双盲研究。总共60颗牙齿被分为MTA组和生物活性玻璃陶瓷组，每组再根据2毫米和4毫米的根尖屏障厚度进一步分为2个亚组（每组n = 30）。对牙齿进行清洁和预备；进行根尖切除术和根管预备。将矿物三氧化物凝聚体和生物活性玻璃陶瓷混合并作为2毫米或4毫米厚的根尖屏障进行充填。使用[具体方法未提及]评估充填样本的细菌渗漏情况。
对分类数据采用卡方检验进行两组间比较。所有P值<0.05被认为具有统计学意义。
4毫米厚的生物活性玻璃陶瓷根尖屏障细菌渗漏量最少，其次是2毫米厚的MTA和4毫米厚的MTA。2毫米厚的生物活性玻璃陶瓷根尖屏障细菌渗漏量最大。但在3个月的时间里，这并无统计学意义。在2毫米和4毫米厚的生物活性玻璃陶瓷组中，渗漏样本总数存在统计学显著差异（P值 = 0.042）。
矿物三氧化物凝聚体和生物活性玻璃陶瓷具有相似的根尖封闭能力。4毫米厚的生物活性玻璃陶瓷根尖封闭能力大于2毫米厚的。
根尖诱导成形术中所用材料的根尖渗漏是年轻恒牙牙髓坏死根管治疗失败的主要原因之一。MTA和生物活性玻璃陶瓷等材料克服了氢氧化钙作为根尖诱导成形材料的各种缺点。根尖屏障的厚度在防止任何微生物进入根尖周区域从而保持充分封闭方面起着重要作用。
Abbas A, Kethineni B, Puppala R, MTA和生物活性玻璃陶瓷作为年轻恒牙根尖屏障的疗效：一项微生物学研究。《国际临床儿科牙科学杂志》2020年；13(6):656 - 662。
