Ability of Barrier Coat S-PRG coating to arrest artificial enamel lesions in primary teeth

作者：Hosoya Yumiko^*; Ando Susumu; Otani Hedeji; Yukinari Tetsubiro; Miyazaki Masashi; Garcia Godoy Franklin

来源：American Journal of Dentistry, 2013, 26(5): 286-290.

Purpose: To evaluate the effects of a surface pre-reacted glass-ionomer (S-PRO) filled coating material to arrest artificial enamel lesions in primary teeth. Methods: Buccal and lingual enamel was demineralized in 0.1 M lactic acid buffer solution (pH 4.75) for 5 days and then divided in the PRO-applied and non-PRG areas. Proximal surfaces were used as a control area without demineralization and coating application. Teeth were divided into three groups (n= 4) according to the 1-week immersion in different solutions: Group 1 (distilled water), Group 2 (demineralizing solution) and Group 3 (artificial saliva). Hardness and Young%26apos;s modulus by nano-indentation test, and elemental contents and ultrastructure by SEM/EDX analysis were obtained. Data were statistically analyzed using ANOVA and Fisher%26apos;s PLSD at alpha= 0.05. Results: Only for the non-PRG area in Group 1, the hardness and Young%26apos;s modulus of the demineralized surface enamel were significantly lower than those of the enamel 30-60 mu m beneath the surface. Demineralized enamel of non-PRG and PRO-applied areas showed similar SEM views. Only for the non-PRO area in Group 2 and control area in Group 3, the Ca/P of the surface enamel was significantly higher than that of the enamel 5-10 mu m beneath the surface. There was no significant difference of the Ca/P among the measuring points from the surface to 10 mu m depth of enamel for the PRG applied area in Group 2.

• 出版日期2013-10