Rodrigues José Augusto, Marchi Giselle Maria, Serra Mônica Campos, Hara Anderson Takeo
Department of Restorative Dentistry, Faculty of Dentistry of Piracicaba, State University of Campinas (UNICAMP), Brazil.
Braz Dent J. 2005;16(2):112-8. doi: 10.1590/s0103-64402005000200005.
This study evaluated in vitro the cariostatic effect of 6 restorative materials with and without fluoride release (Fuji II LC, F-2000, Degufil Mineral, Sure Fil and Z-250) associated with a fluoridated and a non-fluoridated dentifrice (Sensodyne Original Formula and Sensodyne Sodium Bicarbonate), on human enamel. Class V-like cavities were prepared on 240 enamel slabs, assigned to 12 groups (6 materials and 2 dentifrices). After cavity restoration, the slabs were submitted to a thermocycling regimen of 1000 thermal cycles and demineralization/remineralization cycles. During pH cycles, slurries of fluoridated and non-fluoridated dentifrices were applied for 5 min. Formation of artificial caries-like lesions was scored independently and blindly by 5 calibrated examiners according to an ordinal scale ranked 0 to 3 by visual examination. The results were analyzed statistically by the Kruskal-Wallis test and pair-wise comparisons (alpha=0.05). There were no significant differences (p>0.05) among the restorative materials associated with the fluoridated dentifrice. When used in association with the non-fluoridated dentifrice, Ketac-Fil showed the highest cariostatic effect followed by Fuji II LC and the other materials. Ketac-Fil was the only material that did not differ statistically when combined with either the fluoridated or the non-fluoridated dentifrice. In conclusion, under the tested experimental conditions, the association of restorative materials and fluoridated dentifrice yielded higher cariostatic effect, except for the conventional glass ionomer cement, whose cariostatic effect was not influenced by the type of dentifrice.
本研究在体外评估了6种有或无氟释放功能的修复材料（富士II LC、F - 2000、Degufil Mineral、Sure Fil和Z - 250）与含氟和不含氟的牙膏（舒适达原味配方牙膏和舒适达碳酸氢钠牙膏）联合使用时，对人牙釉质的防龋效果。在240块牙釉质块上制备类V类洞，分为12组（6种材料和2种牙膏）。洞修复后，将牙釉质块进行1000次热循环和脱矿/再矿化循环的热循环处理。在pH循环过程中，将含氟和不含氟牙膏的糊剂涂抹5分钟。由5名经过校准的检查人员根据0至3的顺序量表，通过视觉检查独立且盲法对人工龋样病变的形成进行评分。结果通过Kruskal - Wallis检验和两两比较进行统计学分析（α = 0.05）。与含氟牙膏联合使用的修复材料之间无显著差异（p>0.05）。当与不含氟牙膏联合使用时，Ketac - Fil显示出最高的防龋效果，其次是富士II LC和其他材料。Ketac - Fil是唯一一种与含氟或不含氟牙膏联合使用时在统计学上无差异的材料。总之，在测试的实验条件下，修复材料与含氟牙膏联合使用产生了更高的防龋效果，但传统玻璃离子水门汀除外，其防龋效果不受牙膏类型的影响。
