Glavina D, Skrinjaric I, Mahovic S, Majstorovic M
Department of Paedodontics, School of Dental Medicine, University of Zagreb, Croatia.
Eur J Paediatr Dent. 2004 Mar;5(1):30-4.
To achieve satisfactory aesthetic appearance of ceramic veneers food debris retention and plaque formation, resulting in possible irritation of surrounding tissues, should be avoided. It is, therefore, necessary to decrease the roughness of ceramic surfaces as much as possible. The aim of this study was to evaluate surface roughness of ceramic veneers after polishin15038787 g with four different techniques.
Twenty veneers were fabricated using Cerec 2 CAD/CAM method (Sirona AG, Bensheim, Germany) from Cerec VITA MARK II ceramic blocks (Vita Zahnfabrik, Bad Säckingen, Germany) and cemented onto prepared extracted teeth. Veneers were divided into 4 groups of 5 specimens and polished with 4 different techniques: 1. Sof-lex discs grit 150, 360, 600, 1200 (3M, St. Paul, MN, USA); 2. Hawe brushes (Hawe Neos Dental, Bioggio, Switzerland); 3. Hawe brushes and diamond paste Diabrill (Oralia Dental GmbH, Kostanz, Germany); 4. Politip-P rubber cups (Vivadent, Schaan, Liechtenstein). Surface profile was measured using Perthometer Perthen S8P 4.5 (Feinprüf Perthen GmbH, Goettingen, Germany) profilometer.
Data were analysed using ANOVA with Tukey HSD test.
Sof-lex discs revealed significant statistical differences for Rz, Ra, Rk, Rpk values (p=0.0002) (Rz=2.92 mm; Ra=0.462 mm; Rk=1.098 mm; Rpk=0.472 mm). Values for Rvk were statistically significant only for rubber cups with diamond paste (p=0,002) (Rvk 4=3.04 mm). Rvk values for all other techniques were not statistically significant (Rvk 1=1.148 mm; Rvk 2=1.936 mm; Rvk 3=2.18 mm).
The best surface smoothness was achieved with Sof-lex discs polishing system. All other methods are clinically acceptable. Selection of polishing technique should be made according to geometric construction of the polishing instrument and possibility of reaching various restoration areas with the polishing instrument.
为使陶瓷贴面获得令人满意的美学外观，应避免食物残渣滞留和菌斑形成，以免对周围组织造成刺激。因此，有必要尽可能降低陶瓷表面的粗糙度。本研究的目的是评估用四种不同技术抛光后陶瓷贴面的表面粗糙度。
使用Cerec 2 CAD/CAM方法（德国本斯海姆的西诺德股份公司）由Cerec VITA MARK II陶瓷块（德国巴特萨克京根的维他齿科集团）制作20个贴面，并粘结到预备好的离体牙上。将贴面分为4组，每组5个样本，用4种不同技术进行抛光：1. Sof-lex砂纸，粒度为150、360、600、1200（美国明尼苏达州圣保罗的3M公司）；2. 哈韦刷（瑞士比奥焦的哈韦尼奥什牙科公司）；3. 哈韦刷和Diabrill金刚石糊剂（德国康斯坦茨的奥拉利亚牙科有限公司）；4. Politip-P橡胶杯（列支敦士登沙恩的维他登公司）。使用Perthometer Perthen S8P 4.5（德国哥廷根的Feinprüf Perthen有限公司）轮廓仪测量表面轮廓。
采用方差分析和Tukey HSD检验对数据进行分析。
Sof-lex砂纸在Rz、Ra、Rk、Rpk值方面显示出显著的统计学差异（p = 0.0002）（Rz = 2.92毫米；Ra = 0.462毫米；Rk = 1.098毫米；Rpk = 0.472毫米）。仅使用含金刚石糊剂的橡胶杯时，Rvk值具有统计学意义（p = 0.002）（Rvk 4 = 3.04毫米）。其他所有技术的Rvk值均无统计学意义（Rvk 1 = 1.148毫米；Rvk 2 = 1.936毫米；Rvk 3 = 2.18毫米）。
Sof-lex砂纸抛光系统可实现最佳的表面光滑度。所有其他方法在临床上均可接受。应根据抛光器械的几何结构以及使用抛光器械到达各个修复区域的可能性来选择抛光技术。
