Bhullar Kanwalpreet K, Gupta Vibha, Sapra Meghna, Bhullar Ramandeep S, Sahiwal Harkiran
Department of Conservative Dentistry and Endodontics, Sri Guru Ram Das Institute of Dental Sciences & Research, Amritsar, Punjab, India.
Department of Oral & Maxillofacial Surgery, Sri Guru Ram Das Institute of Dental Sciences & Research, Amritsar, Punjab, India.
Int J Clin Pediatr Dent. 2024 Apr;17(Suppl 1):S1-S5. doi: 10.5005/jp-journals-10005-2789.
Calcium silicate cement like mineral trioxide aggregate (MTA) and Biodentine are known for their biocompatibility and are effectively used as retrograde filling materials. During their placement, the materials interact with oral tissue fluids like saliva and blood, so the aim of the present study was to assess the effect of distilled water, saline, and blood on the surface microstructure and compressive strength of MTA and Biodentine.
In this experimental study, a total of 84 custom-made cylindrical molds were randomly allocated into two main cement groups ( = 42) MTA and Biodentine. Each group was further subdivided into three subgroups ( = 14) as per the testing conditions, that is, samples exposed to distilled water, saline, and fresh blood. Around 10 samples from each subgroup were tested for compressive strength using a universal testing machine (UTM), and the remaining four samples were used to examine the surface characteristics of MTA and Biodentine using a scanning electron microscope (SEM). One-way analysis of variance (ANOVA) and Tukey's tests were employed to calculate the mean compressive strength and standard deviation values.
There was a significant difference in the compressive strength between MTA and Biodentine, especially in the presence of blood. During the SEM analysis, it was found that samples contaminated with blood or saline were devoid of acicular crystals in both groups. MTA group showed a more porous matrix with few hexagonal crystals than Biodentine.
Biodentine may be advantageous as a root-end filling or root repair material in the presence of blood.
Bhullar KK, Gupta V, Sapra M, Evaluation of Surface Microstructure and Compressive Strength of Mineral Trioxide Aggregate and Biodentine in the Existence and Absence of Oral Tissue Fluids. Int J Clin Pediatr Dent 2024;17(S-1):S1-S5.
硅酸钙水门汀，如矿物三氧化物凝聚体（MTA）和百康齿泰，因其生物相容性而闻名，并有效地用作根管倒充填材料。在放置过程中，这些材料会与唾液和血液等口腔组织液相互作用，因此本研究的目的是评估蒸馏水、生理盐水和血液对MTA和百康齿泰表面微观结构和抗压强度的影响。
在本实验研究中，总共84个定制的圆柱形模具被随机分为两个主要的水门汀组（每组n = 42），即MTA组和百康齿泰组。根据测试条件，每组进一步细分为三个亚组（每组n = 14），即暴露于蒸馏水、生理盐水和新鲜血液的样本。使用万能试验机（UTM）对每个亚组的约10个样本进行抗压强度测试，其余4个样本用于使用扫描电子显微镜（SEM）检查MTA和百康齿泰的表面特征。采用单因素方差分析（ANOVA）和Tukey检验来计算平均抗压强度和标准差。
MTA和百康齿泰之间的抗压强度存在显著差异，尤其是在有血液存在的情况下。在扫描电子显微镜分析中，发现两组中被血液或生理盐水污染的样本均没有针状晶体。MTA组显示出比百康齿泰组更多孔的基质，六边形晶体较少。
在有血液存在的情况下，百康齿泰作为根尖充填或牙根修复材料可能具有优势。
Bhullar KK, Gupta V, Sapra M, 口腔组织液存在和不存在时矿物三氧化物凝聚体和百康齿泰的表面微观结构和抗压强度评估。《国际临床儿科牙科学杂志》2024；17（S - 1）：S1 - S5。
