五种正畸带粘结用水泥机械性能的评估。

Evaluation of mechanical properties of five cements for orthodontic band cementation.

机构信息

Univ Federal de Santa Catarina - UFSC, Programa de Pós-Graduação em Odontologia, Florianópolis, SC, Brazil.

出版信息

Braz Oral Res. 2013 Mar-Apr;27(2):136-41. doi: 10.1590/S1806-83242013005000002. Epub 2013 Mar 1.

DOI:10.1590/S1806-83242013005000002

Abstract

The aim of this in vitro study was to compare the flexural, compressive and diametral tensile strengths of five cements used in orthodontics for band cementation. Twelve specimens of each cement were tested: 1 - GC Fuji Ortho Band (FJ), GC America Inc.; 2 - Meron (MR), Voco; 3 - Multi-Cure Glass Ionomer Band Cement (MC), 3M Unitek; 4 - Band-Lok (BL), Reliance Orthodontic Products; and 5 - Ketac Cem (KC), 3M ESPE. The results (mean) for diametral tensile strength were: 10.51 MPa (FJ), 9.60 MPa (MR), 20.04 MPa (MC), 42.80 MPa (BL), and 4.08 MPa (KC). The results for compressive strength were (in the same order): 64.50 MPa, 77.71 MPa, 94.21 MPa, 193.88 MPa, and 81.93 MPa. The results for flexural strength were (in the same order): 20.72 MPa, 25.84 MPa, 53.41 MPa, 137.41 MPa, and 20.50 MPa. The statistical analysis was performed by two-way ANOVA and Tukey tests with p-value £ 0.05. In terms of diametral tensile strength, BL showed the highest strength statistically, and MC, the second highest. In terms of compressive tensile strength, BL showed the highest strength statistically, and FJ did not attain the minimum recommended strength. In terms of flexural tensile strength, BL cement was superior to MC, and MR, FJ and KC were equivalent and inferior to BL and MC.

摘要

本体外研究的目的是比较 5 种用于正畸带粘接的粘接剂的弯曲、压缩和直径拉伸强度。每种粘接剂测试 12 个样本：1 - GC Fuji Ortho Band（FJ），GC America Inc.；2 - Meron（MR），Voco；3 - Multi-Cure Glass Ionomer Band Cement（MC），3M Unitek；4 - Band-Lok（BL），Reliance Orthodontic Products；和 5 - Ketac Cem（KC），3M ESPE。直径拉伸强度的结果（平均值）为：10.51 MPa（FJ）、9.60 MPa（MR）、20.04 MPa（MC）、42.80 MPa（BL）和 4.08 MPa（KC）。压缩强度的结果（顺序相同）为：64.50 MPa、77.71 MPa、94.21 MPa、193.88 MPa 和 81.93 MPa。弯曲强度的结果（顺序相同）为：20.72 MPa、25.84 MPa、53.41 MPa、137.41 MPa 和 20.50 MPa。统计分析采用双向方差分析和 Tukey 检验，p 值 £ 0.05。就直径拉伸强度而言，BL 表现出统计学上的最高强度，MC 次之。就压缩拉伸强度而言，BL 表现出统计学上的最高强度，而 FJ 未达到最低推荐强度。就弯曲拉伸强度而言，BL 水泥优于 MC，MR、FJ 和 KC 与 BL 和 MC 相当且劣于 BL 和 MC。