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首页> 外文期刊>Bio-medical materials and engineering >An investigation of the shear bond strength of compomer restorative material to enamel and dentine.
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An investigation of the shear bond strength of compomer restorative material to enamel and dentine.

机译：研究复合材料修复材料对牙釉质和牙本质的剪切粘结强度。

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The aim of this study was to investigate the effect of one step adhesives on the shear bond strength of a compomer restorative material to both enamel and dentine. Human extracted teeth were used for the study. Ten samples were prepared for both enamel and dentine specimens for each of the five groups: Tooth, no etch, Prime and Bond NT (P+B NT); tooth, Non-Rinse Conditioner (NRC), P+B NT; tooth, NRC, Prime and Bond 2.1 (P+B 2.1); tooth, etch, P+B NT; tooth, etch, P+B 2.1. The specimens were subjected to bond testing. The shear bond strength was measured using an Inston 1193 testing machine using a cross head speed of 1 mm/minute. The specimens were tested to destruction. The results show that for the enamel specimens the highest bond strength was recorded for those specimens subjected to Etch, P+B 2.1 (22.1 MPa) and Etch P+B NT (20.0 MPa). The groups of specimens which did not undergo etching had very low bond strengths ranging from 11.4 MPa for NRC, P+B 2.1, 8.5 MPa for NRC P+B NT to 6.9 MPa for P+B NT. For the dentine specimens, for all of the groups, the shear bond strengths were low. Those groups subjected to etching produced the highest values of 7.9 MPa for NRC P+B 2.1 with the lowest value of 6.1 MPa for NRC P+B NT. These bond strengths were significantly lower than those achieved for bonding to enamel. Prime and Bond NT and Prime and Bond 2.1, used in conjunction with acid etching, produce satisfactory bond strengths of compomer restorative material to enamel. Bond strengths to dentine were low.
机译：这项研究的目的是研究一步粘合剂对复合修复材料对牙釉质和牙本质的剪切粘合强度的影响。将人类拔出的牙齿用于该研究。为五组中的每组分别准备了十个样品用于牙釉质和牙本质样品：牙齿，无蚀刻，Prime和Bond NT（P + B NT）;牙齿，非冲洗护发素（NRC），P + B NT;牙齿，NRC，Prime和Bond 2.1（P + B 2.1）;牙齿，蚀刻，P + B NT;牙齿，蚀刻，P + B 2.1。样品经受粘结测试。使用Inston 1193测试机以1mm /分钟的十字头速度测量剪切粘合强度。样品被测试破坏。结果表明，对于搪瓷样品，在经受Etch，P + B 2.1（22.1 MPa）和Etch P + B NT（20.0 MPa）的情况下，记录的粘结强度最高。未蚀刻的样品组的粘结强度非常低，范围从NRC的11.4 MPa，P + B 2.1的NRC P + B NT的8.5 MPa到P + B NT的6.9 MPa的不等。对于牙本质样品，对于所有组，其剪切粘结强度均较低。那些经过蚀刻的组对于NRC P + B 2.1产生了最高的7.9 MPa值，对于NRC P + B NT产生了最低的6.1 MPa的值。这些粘结强度明显低于粘结到搪瓷上获得的强度。 Prime和Bond NT以及Prime和Bond 2.1与酸蚀刻结合使用，可产生令人满意的复合体修复材料与牙釉质的粘合强度。与牙本质的粘合强度低。

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