Bunz Oskar, Kalz Paul, Benz Carla I, Naumova Ella A, Arnold Wolfgang H, Piwowarczyk Andree
Department of Prosthodontics, School of Dentistry, Faculty of Health, Witten/Herdecke University, 58455 Witten, Germany.
Private Practice, 45128 Essen, Germany.
Dent J (Basel). 2021 May 21;9(6):59. doi: 10.3390/dj9060059.
Chipping of veneering is the most common clinical complication for zirconia restorations. Veneering composite could be a promising alternative to renew restorations. Zirconia discs (3-YSZ) were prepared with varying surface treatments and bonded to indirect composite as follows: air abrasion and Scotchbond Universal (A/SU); air abrasion and Clearfil Ceramic Primer (A/C); air abrasion and MKZ Primer (A/M); air abrasion and Monobond Plus (A/MP); silica-coating and Scotchbond Universal (S/SU); air abrasion (AP/SU), additional cold atmospheric plasma treatment, and Scotchbond Universal. An indirect composite material was then applied to the zirconia specimens. Specimens were divided into subgroups for short-term (14 days storage at 37 °C and 5000 thermal cycles) and long-term (250 days storage and 37,500 thermal cycles) artificial aging. Shear bond strength measurement (SBS) was performed, and data were analyzed by Kruskal-Wallis-test and multiple comparison testing with Dunn's correction ( ≤ 0.05). The median SBS values (MPa) of short- and long-term artificial aging were: 3.09/1.36 (A/SU); 0.77/1.43 (S/SU); 2.82/2.15 (AP/SU); 1.97/1.80 (A/C); 2.01/1.58 (A/M); and 1.70/1.68 (A/MP). For short-term artificial aging A/SU showed the highest median SBS values, whereas in the long-term trial, AP/SU showed the highest values and the difference was significant. A prolonged artificial aging decreased SBS in all groups, except S/SU. In summary, treatment with CAP can improve SBS in the long-term.
氧化锆修复体中贴面崩裂是最常见的临床并发症。贴面复合材料可能是修复修复体的一种有前景的替代方法。制备了经过不同表面处理的氧化锆盘（3-YSZ），并按如下方式与间接复合材料粘结：空气磨蚀和3M Scotchbond Universal粘结剂（A/SU）；空气磨蚀和可乐丽Clearfil Ceramic Primer粘结剂（A/C）；空气磨蚀和MKZ Primer粘结剂（A/M）；空气磨蚀和可乐丽Monobond Plus粘结剂（A/MP）；二氧化硅涂层和3M Scotchbond Universal粘结剂（S/SU）；空气磨蚀（AP/SU）、额外的冷大气等离子体处理以及3M Scotchbond Universal粘结剂。然后将间接复合材料应用于氧化锆试件。将试件分为短期（在37℃下储存14天和进行5000次热循环）和长期（储存250天和进行37500次热循环）人工老化的亚组。进行剪切粘结强度测量（SBS），并通过Kruskal-Wallis检验和采用Dunn校正的多重比较检验（≤0.05）对数据进行分析。短期和长期人工老化的SBS中位数（MPa）分别为：3.09/1.36（A/SU）；0.77/1.43（S/SU）；2.82/2.15（AP/SU）；1.97/1.80（A/C）；2.01/1.58（A/M）；以及1.70/1.68（A/MP）。对于短期人工老化，A/SU显示出最高的SBS中位数，而在长期试验中，AP/SU显示出最高值且差异显著。除S/SU外，延长人工老化会降低所有组的SBS。总之，冷大气等离子体处理在长期内可提高SBS。
