Kupiec K A, Wuertz K M, Barkmeier W W, Wilwerding T M
Creighton University School of Dentistry, Omaha, Neb., USA.
J Prosthet Dent. 1996 Aug;76(2):119-24. doi: 10.1016/s0022-3913(96)90294-2.
Intraoral repairs often involve bonding composite to fractured porcelain. Newer adhesive systems, currently referred to as multipurpose systems, include materials with recommended procedures for repair of porcelain. This laboratory study evaluated various treatment regimens with the ProBond adhesive system. Three different porcelain surface procedures were used: (1) air abrasion with aluminum oxide (50 microm), (2) 8% hydrofluoric acid, and (3) air abrasion and hydrofluoric acid. Eight different treatment procedures were then used to bond 10 composite cylinders to porcelain surfaces in each group. Shear bond strengths (in megapascals) were determined with an Instron testing machine after storage in water for 24 hours at 37 degrees C and after 3 months of storage and thermocycling. The combination of air abrasion and hydrofluoric acid on porcelain surfaces before bonding composite recorded the most consistently effective bond strengths. Four of the treatment regimens in the air abrasion groups yielded low bond strengths at 3 months. This study also indicated that silane treatment of porcelain is critical for development of suitable bond strengths for composite.
口腔内修复通常涉及将复合树脂粘结到破裂的瓷体上。较新的粘结系统，目前称为多用途系统，包括具有瓷体修复推荐程序的材料。这项实验室研究评估了使用ProBond粘结系统的各种治疗方案。采用了三种不同的瓷体表面处理方法：（1）用氧化铝（50微米）进行空气喷砂，（2）8%氢氟酸，（3）空气喷砂和氢氟酸。然后，每组使用八种不同的处理程序将10个复合树脂圆柱体粘结到瓷体表面。在37℃水中储存24小时后以及储存3个月并进行热循环后，使用英斯特朗测试机测定剪切粘结强度（以兆帕为单位）。在粘结复合树脂之前，对瓷体表面进行空气喷砂和氢氟酸处理的组合记录了最一致有效的粘结强度。空气喷砂组中的四种治疗方案在3个月时产生了较低的粘结强度。这项研究还表明，对瓷体进行硅烷处理对于形成适合复合树脂的粘结强度至关重要。
