Department of Dental Pathology and Therapeutics, School of Dentistry, University of Granada, Spain.
Med Oral Patol Oral Cir Bucal. 2011 Jan 1;16(1):e105-9.
To evaluate Cavit TM G, ProRoot TM MTA and Tetric® EvoFlow as intraorifice barriers to prevent coronal microleakage in root canal treatment.
Forty-two human single rooted teeth were divided randomly in three experimental groups of 10 specimens each and two control groups. The experimental groups were prepared with hand instrumentation and cold lateral condensed technique of the gutta-percha. Four millimetres of coronal gutta-percha were removed and replaced by one of the following filling materials: Cavit TM G, Tetric® EvoFlow or ProRoot TM MTA. In the experimental groups, leakage was measured by the concentration of leaked glucose in the apical reservoir at 1, 7, 30, and 45 days, using the enzymatic glucose oxidase method. Data were analyzed by means of Mann-Whitney U and Kruskal-Wallis tests at α=0.05.
The glucose penetration results of three experimental groups increased gradually over time. No significant differences were found among groups at 24 hours and 1 week. At thirty and forty-five days, Cavit TM and Tetric® EvoFlow values were significantly different (p=0.007 and p=0.023, respectively).
The sealing ability of the Cavit TM G, ProRoot TM MTA and Tetric® EvoFlow used as intraorifice materials tends to be similar over time.
评估 CavitTMG、ProRootTMTA 和 Tetric®EvoFlow 作为根管内屏障，以防止根管治疗中的冠部微渗漏。
将 42 个人工单根牙随机分为 3 个实验组（每组 10 个样本）和 2 个对照组。实验组采用手用器械和冷侧压技术进行根管预备，并用牙胶尖冷侧压充填。去除 4mm 的冠部牙胶，并用以下充填材料之一替代：CavitTMG、Tetric®EvoFlow 或 ProRootTMTA。在实验组中，使用酶葡萄糖氧化酶法，通过根尖储库中漏出的葡萄糖浓度来测量渗漏，在第 1、7、30 和 45 天进行测量。使用 Mann-Whitney U 和 Kruskal-Wallis 检验，α=0.05。
三组实验的葡萄糖渗透结果随时间逐渐增加。在 24 小时和 1 周时，各组之间无显著差异。在第 30 天和第 45 天，CavitTMG 和 Tetric®EvoFlow 的值有显著差异（p=0.007 和 p=0.023）。
CavitTMG、ProRootTMTA 和 Tetric®EvoFlow 作为根管内材料的密封能力随时间趋于相似。
