專業用塗氟製劑對複合樹脂表面型態之影響

含氟製劑對齲齒防治有顯著效果，然而部分局部塗布用含氟製劑會被壞複合樹脂表面結構。複合樹脂表面結構受影響之程度與含氟製劑種類及複合樹脂材質有關，酸化含氟製劑較中性含氟製劑影響嚴重，但除酸度外，含氟製劑之黏稠度亦有可能改變介面之表面接觸角度、接觸面積及時間而改變剝蝕速度。本研究欲探討含氟製劑黏稠度對複合樹脂之影響，並研究數種新開發之複合樹脂對含氟製劑之感受性與一般複合樹脂是否相同。本實驗使用五種不同黏稠度之含氟製劑，分別塗布於五種複合樹脂表面，經目測比較實驗側與對照側對光反射性之改變，再以電子顯微鏡觀察比較表面結構之變化。實驗結果顯示，含氟製劑對於複合樹脂的影響如下：(l)複合樹脂受影響的程度與填料大小有關，而光熱聚合複合樹脂對含氟製劑之耐受性略優於一般型複合樹脂。(2)泡沫型酸化磷酸氟與傳統型酸化磷酸氟凝膠對複合樹脂的表面破壞最嚴重，而變凝性酸化磷酸氟凝膠最弱，甚至比中性氟化鈉凝膠的影響力更不顯著。故當口內已有複合樹脂且需定期塗氟以預防齲齒者，建議使用變凝性酸化磷酸氟凝膠以避免對既有復形物造成傷害。

關鍵字

氟膠黏綢度；複合樹脂；表面形態

並列摘要

It was well known that topical fluoride agents may influence the surface roughness of resin composites. Acidulated fluoride agents had more significant adverse effects than neutral sodium fluoride agents. The aim of this study was to assess the effects of various viscosities of topical fluoride agents on morphological characteristics of resin composites, and the surface roughness of modern resin composites after fluoride challenge. Five fluoride agents with different viscosities were evaluated in the study. These materials were applied to 5 varied resin composites. The fluoride gel-induced surface roughness was compared by light reflectance of control and treatment halves, and was rated by specific criteria. After comparison, the surface degradation of the resin composite was studied using SEM. The results showed that (1)The surface damage caused by the topical fluoride agents was less with the photo-thermal polymerized resin composites in comparison with the conventional light-curing resin composites. (2)The APF foam and conventional APF gel were the most destructive agents, neutral NaF gel was less destructive, and thixotropic APF gel was the least destructive one. Thus, we suggest that patients who have had resin composite restoration and need regular topical fluoride applications should use thixotropic APF gel to prevent damage to previous restorations.

並列關鍵字

vlscosity if APF gel ； resin composite ； surface morpholoty

國際替代計量

專業用塗氟製劑對複合樹脂表面型態之影響

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