Various Effects of Sandblasting of Dental Restorative Materials.
Various Effects of Sandblasting of Dental Restorative Materials.
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DOI：
10.1371/journal.pone.0147077
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发表时间：
2016
期刊：
影响因子：
3.7
通讯作者：
Minagi S
中科院分区：
文献类型：
--
作者：
Nishigawa G;Maruo Y;Irie M;Maeda N;Yoshihara K;Nagaoka N;Matsumoto T;Minagi S
在粘结之前，去除残留在牙科修复体表面上的喷砂颗粒。可能的是，粘结材料和喷砂颗粒残留物之间的粘结强度可能超过与修复材料的粘结强度。如果是这种情况，喷砂颗粒粘附到喷砂材料表面可能有助于增加粘合强度，如粘合材料和摩擦化学二氧化硅涂层处理表面的硅烷化颗粒之间的潜在粘合机制。我们假设，超声波清洗的粘接表面，这是喷砂预处理，可能会影响粘接强度的树脂粘接材料的牙科修复材料。因此，我们观察到树脂密封材料与氧化铝的粘合强度大于之前与氧化锆陶瓷和钴铬合金的粘合强度。为测定树脂粘结材料与氧化锆陶瓷和钴铬合金的剪切粘结强度，制备了每种材料的40个试件。粘接表面用硅砂纸抛光，然后喷砂处理。对于每种修复材料，40个喷砂试件均分为两组：超声清洗（USC）组和非超声清洗（NUSC）组。在粘接表面聚合树脂粘接材料后，通过剪切试验研究了喷砂预处理后粘接表面超声清洗对粘接强度的影响。对于氧化锆陶瓷和钴铬合金，NUSC组的剪切粘结强度显著高于USC组。应避免在喷砂后对牙科抛光物进行超声波清洗，以保持这些材料之间更好的结合。
Sandblasting particles which remain on the surfaces of dental restorations are removed prior to cementation. It is probable that adhesive strength between luting material and sandblasting particle remnants might exceed that with restorative material. If that being the case, blasting particles adhere to sandblasted material surface could be instrumental to increasing adhesive strength like underlying bonding mechanism between luting material and silanized particles of tribochemical silica coating-treated surface. We hypothesize that ultrasonic cleaning of bonding surfaces, which were pretreated with sandblasting, may affect adhesive strength of a resin luting material to dental restorative materials. We therefore observed adhesive strength of resin luting material to aluminum oxide was greater than those to zirconia ceramic and cobalt-chromium alloy beforehand. To measure the shear bond strengths of resin luting material to zirconia ceramic and cobalt-chromium alloy, forty specimens of each restorative material were prepared. Bonding surfaces were polished with silicon abrasive paper and then treated with sandblasting. For each restorative material, 40 sandblasted specimens were equally divided into two groups: ultrasonic cleaning (USC) group and non-ultrasonic cleaning (NUSC) group. After resin luting material was polymerized on bonding surface, shear test was performed to evaluate effect of ultrasonic cleaning of bonding surfaces pretreated with sandblasting on bond strength. For both zirconia ceramic and cobalt-chromium alloy, NUSC group showed significantly higher shear bond strength than USC group. Ultrasonic cleaning of dental restorations after sandblasting should be avoided to retain improved bonding between these materials.