Proximal contact formation with different restorative materials and techniques.
Proximal contact formation with different restorative materials and techniques.
复制标题
使用不同的修复材料和技术形成近端接触。
DOI：
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发表时间：
2002
影响因子：
1.4
通讯作者：
C. Dörfer
中科院分区：
文献类型：
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作者：
F. Klein;A. K. Keller;H. Staehle;C. Dörfer
目的
确定不同的牙齿颜色材料和应用技术是否影响离体近端接触强度（PCS）。
材料和方法
在360颗人工下颌第一磨牙中制备了标准化的MO洞型。形成8组（n = 45），用汞合金（1）、低粘度（2，3）、中等粘度（4，5）和高粘度（6，7）混合复合材料修复，并与未准备牙齿的原始接触强度进行比较（8）。将修复的牙齿安装到模拟生理牙齿移动的牙槽中。通过使用通用测试机在标准化条件下测量通过与牙线的近端接触所需的力来量化PCS。
结果
PCS范围从低粘度复合材料的1.32 +/- 0.56 N到汞合金修复体的9.90 +/- 1.98 N。在多层技术中插入的中等粘度（5.65 +/- 1.08 N）和高粘度混合复合材料（5.90 +/- 1.45 N）与未准备牙齿的原始PCS（5.76 +/- 0.53 N）没有统计学显著差异。
PURPOSE
To determine, whether different tooth colored materials and application techniques influence the proximal contact strengths (PCS) in vitro.
MATERIALS AND METHODS
Standardized MO-cavities for direct restorations were prepared into 360 artificial lower first molars. Eight groups were formed (n = 45) and restored with amalgam (1), low (2, 3), medium (4, 5) and high (6, 7) viscosity hybrid composites and compared to the original contact strengths of the unprepared teeth (8). The restored teeth were mounted into a socket simulating physiological tooth mobility. PCS were quantified by measuring the forces necessary for passing the proximal contact with floss under standardized conditions using a universal testing machine.
RESULTS
PCS ranged from 1.32 +/- 0.56 N for the low viscosity composite to 9.90 +/- 1.98 N for the Amalgam restoration. Medium (5.65 +/- 1.08 N) and high viscosity hybrid composites (5.90 +/- 1.45 N) inserted in a multi-layer technique showed no statistically significant differences to the original PCS of the unprepared teeth (5.76 +/- 0.53 N).