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目的 评价自粘接型和普通型树脂粘接剂与玻璃陶瓷粘接的耐久性,以期为树脂粘接剂的临床应用提供参考.方法 按照ISO 4049 国际标准,对粘接剂A(自粘接型,G-CEM)和粘接剂B(普通型,Linkmax HV)各5个试件在6周内的最大吸水值和溶解值以及其光照射后0.5、24 h和6周的表面显微硬度进行测量.对64个陶瓷试件分别使用硅烷偶联剂A(Monobond S)、B(Clearfil Ceramic Primer)和C(GC Ceramic Primer)进行表面处理或不进行表面处理,再分别使用粘接剂A和B粘接,并于冷热循环前和冷热循环30 000次后测量试件粘接强度.结果 粘接剂A的吸水值和溶解值分别为(79.62±5.63)和(4.78±3.33)μg/mm～3,明显高于粘接剂B[分别为(35.03±3.33)和(0.00±0.00)μg/mm～3].两种粘接剂的表面显微硬度在光照射后24 h达到最大值.冷热循环30 000次后未行表面处理和硅烷偶联剂A、B、C处理后的陶瓷试件与粘接剂A的粘接强度分别为(0.00±0.00)、(2.86±3.25)、(12.75±1.55)和(11.98±2.35)MPa,与粘接剂B对应试件粘接强度[分别为(0.00±0.00)、(5.15±5.20)、(10.94±3.30)和(14.18±3.13)MPa]的差异无统计学意义.结论 在使用硅烷偶联剂的前提下,自粘接型树脂粘接剂可以代替普通型树脂粘接剂进行玻璃陶瓷粘接.

Objective To evaluate the bond durability of glass ceramic to self-adhesive and conventional resin cements.Methods Maximum water sorption and solubility of two resin cements(A:self-adhesive type,G-CEM;B:conventional type,Linkmax HV)were measured during 6 week water storage.And their surface Knoop hardness number was measured at 0.5,24 h and 6 week after irradiation.Sixty-four glass ceramic samples were or were not silanized with one of the three silane coupling agents(A:Monobond S;B:Clearfil Ceramic Primet;C:GC Ceramic Primer),and then cemented with two resin cements.The micro-bond strength between the two cements and glass ceramic were measured at baseline and after 30 000 thermal cycle.Results Cement A had higher water sorption[(79.62±5.63)μg/mm～3]and solubility[(4.78±3.33)μg/mm～3]than cement B[(35.03±3.33)μg/mm～3,(0.00±0.00)μg/mm～3].Cement A and B could achieve maximal surface hardness at 24 h after irradiation,and this was maintained during 6 week water storage.After 30 000 thermal cycle,the micro-bond strength between unsilanized glass ceramic and cement A or B was(0.00±0.00)MPa,and those between cement A and silanized glass ceramic with silane coupling agent A,B and C,were(2.86±3.25),(12.75±1.55)and(11.98±2.35)MPa respectively[for cement B,the data was(5.15±5.20),(10.94±3.30)and(14.18±3.13)MPa].No significant diffrence was found between the micro-bond strength of cement A and that of cement B with glass ceramic.Conclusions Self-adhesive resin cement can achieve similar bond durability to glass ceramic as conventional resin cement does.