居家漂白處理對牙科不?袗?矯正托架金屬離子釋放之影響

Effect of home bleaching treatment on metal ions release from stainless steel orthodontic brackets

王志元(Chih-Yuan Wang)

指導教授 ： 李慈心 ； 黃何雄

中山醫學大學/口腔醫學院/口腔材料科學研究所/碩士(2007年)

https://doi.org/10.6834/CSMU.2007.00042

摘要

本研究目的為評估居家漂白處理對牙科不?袗?矯正托架金屬離子釋放之影響。分別將3M Unitek (U)、Dentaurum (D) 及Tomy (T) 三種廠牌不?袗?矯正托架進行六組不同的漂白處理方式。使用感應耦合電漿質譜儀測定鐵、鉻及鎳離子釋放量，利用掃描式電子顯微鏡觀察托架表面型態及利用原子力顯微鏡量測托架表面粗糙度。結果顯示漂白處理方式與矯正托架廠牌對金屬離子釋放量，在統計上有顯著性差異(p<0.0001)。其中Tomy 廠牌托架經10%過氧化氫漂白溶液處理後，鐵及鎳離子釋放量最大，而Dentaurum廠牌托架經10%過氧化氫漂白溶液處理後鉻離子釋放量最大，然這些值仍低於對人體之危害值之數十倍。另一方面，本研究所使用的不?袗?矯正托架表面有不同的粗糙度，此粗糙度的差異性對漂白處理所造成矯正托架金屬離子的釋放量並無直接影響。

關鍵字

居家漂白 ； 不?袗 ； 矯正托架 ； 金屬離子

並列摘要

This study was to evaluate the effect of home bleaching treatment on metal ions release from stainless steel orthodontic brackets, including 3M Unitek, Dentaurum, and Tomy. Six different bleaching treatments were used in this study. The amounts of iron, chromium, and nickel ions release from brackets were detected by inductively coupled plasma mass spectrometry. A scanning electron microscope and an atomic force microscopy were used to analyze the surface morphology and roughness, respectively. Results showed that the bleaching treatment and the bracket brand had a statistically significant influence on metal ions release (p<0.0001). Among the tested brackets, Tomy bracket treated with 10% H2O2 had the highest iron and nickel ions release, 3M Unitek bracket treated with 10% H2O2 had the highest chromium ions release. However, the amounts of the released metal ions were still below the critical value to induce a biological negative effect. Different surface topography was present among the tested brackets. The difference in surface topography with bleaching treatment did not correspond with metal ions release.

並列關鍵字

home bleaching ； stainless steel ； orthodontic bracket ； metal ions

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