Short-term Effect of Four Root Filling Materials on the Flexural Strength of Human Root Dentin

Hamed Karkehabadi, Shahriar Shahriari, Faraz Sedaghat, E. Yarmohammadi, H. Abbaspourrokni
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引用次数: 2

Abstract

Background: This study aimed to assess the effects of calcium hydroxide, Biodentine, calcium-enriched mixture (CEM) cement, and mineral trioxide aggregate (MTA) on root dentin flexural strength after a 30-day exposure period. Methods: This in vitro experimental study evaluated 25 freshly extracted sound human incisors with no caries or restorations. The apical 5 mm and the coronal two-thirds of the crowns were cut such that all samples had 10 mm length. Dentin samples (n=20 in each group) were then exposed to 2 mm thickness of calcium hydroxide, Biodentine, CEM cement, MTA, or saline (control) in petri dishes for 30 days. Finally, dentin samples were subjected to a three-point bending test after the intervention, and the flexural strength data were analyzed using one-way ANOVA, Tukey’s test, and t test. Results: Thirty-day exposure to all four biomaterials decreased the flexural strength of root dentin (P 0.05). Conclusions: In general, all four tested biomaterials decrease the dentin strength although this reduction is more prominent by calcium hydroxide.
四种牙根充填材料对牙根牙本质抗弯强度的短期影响
背景:本研究旨在评估氢氧化钙、生物牙本质碱、富钙混合物(CEM)水泥和矿物三氧化物骨料(MTA)暴露30天后对牙根本质抗弯强度的影响。方法:采用体外实验方法对25颗新鲜拔牙、无龋、无修复的健全人门牙进行评价。顶端5毫米和冠状三分之二的冠被切断,使所有样品的长度为10毫米。然后将牙本质样本(每组20个)暴露于2 mm厚的氢氧化钙、牙本质碱、CEM水泥、MTA或生理盐水(对照)培养皿中30天。最后,对干预后的牙本质样本进行三点弯曲检验,抗弯强度数据采用单因素方差分析、Tukey检验和t检验进行分析。结果:暴露于所有四种生物材料30天后,根本质的抗弯强度降低(p0.05)。结论:总体而言,四种生物材料均可降低牙本质强度,但氢氧化钙对牙本质强度的降低更为明显。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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