Laboratory for Digital Dentistry, Department of Conservative Dentistry witch Endodontics, Wroclaw Medical University, Krakowska 26, Wrocław 50-425, Poland.
Department of Dentofacial Orthopeadics and Orthodontics, Division of Facial Abnormalities, Wroclaw Medical University, Krakowska 26, Wrocław 50-425, Poland.
J Healthc Eng. 2021 Apr 28;2021:8828954. doi: 10.1155/2021/8828954. eCollection 2021.
The aim was to evaluate the flexural strength, flexural modulus, microhardness, Weibull modulus, and characteristic strength of six resin composite blocks (Grandio Blocs-GR, Tetric CAD-TE, Brilliant Crios-CR, Katana Avencia-AV, Cerasmart-CS, and Shofu Block HC-HC).
Flexural strength and flexural modulus were measured using a three-point bending test and microhardness using the Vickers method. Weibull analysis was also performed.
The materials showed flexural strength ranging from 120.38 (HC) to 186.02 MPa (GR), flexural modulus from 8.26 (HC) to 16.95 GPa (GR), and microhardness from 70.85 (AV) to 140.43 (GR). Weibull modulus and characteristic strength ranged from 16.35 (CS) to 34.98 (TE) and from 123.45 MPa (HC) to 190.3 MPa (GR), respectively.
GR, TE, and CR presented significantly higher flexural strength, modulus, Weibull modulus, and characteristic strength than the others.
评估 6 种树脂复合块（美塑 Grandio Blocs-GR、瓷化美学 Tetric CAD-TE、酷瓷 Brilliant Crios-CR、卡塔娜 Avencia-AV、Cerasmart-CS 和义获嘉 Shofu Block HC-HC）的弯曲强度、弯曲模量、显微硬度、威布尔模数和特征强度。
使用三点弯曲试验测量弯曲强度和弯曲模量，使用维氏硬度法测量显微硬度。还进行了威布尔分析。
材料的弯曲强度范围为 120.38 MPa（HC）至 186.02 MPa（GR），弯曲模量范围为 8.26 GPa（HC）至 16.95 GPa（GR），显微硬度范围为 70.85 HV（AV）至 140.43 HV（GR）。威布尔模数和特征强度范围分别为 16.35（CS）至 34.98（TE）和 123.45 MPa（HC）至 190.3 MPa（GR）。
GR、TE 和 CR 的弯曲强度、模量、威布尔模数和特征强度明显高于其他材料。
