- 學位論文
氧化鋯陶瓷人工牙根材料表面處理研究
A Study of Surface Treatments of Zirconia Dental Implant
摘要
本研究探討正方晶形穩態氧化鋯（TZP）的表面處理方法，使用噴砂法、蝕刻法與複合式的噴砂加酸蝕法探討處理後的表面狀況。噴砂法使用人造鑽石顆粒當砂材並與氧化鋁顆粒及氧化鋯顆粒比較；蝕刻法使用到多種蝕刻液包含硝酸、氫氟酸、硫酸、鹽酸和氫氧化鉀。實驗發現採用鑽石顆粒能有效增加TZP試片表面粗糙度與表面積，人造鑽石噴砂結果的表面粗糙度參數對於壓力或顆粒粒徑有正相關性，主要原因為人造鑽石顆粒的刃邊形狀相同，採用人造鑽石顆粒對於噴砂結果的表面狀況較容易掌握，因此可以經由調整不同壓力與粒徑製造出不同類型的粗糙表面；硝酸與氫氟酸的混合水溶液，能夠在TZP試片表面上製造微小的顆粒狀結構，大幅提高表面積；複合式以大粒徑人工鑽石噴砂後加酸蝕的表面處理方法，酸蝕處理能保持噴砂後表面的粗糙水準，實驗發現能使TZP表面積Sdr數值大幅提升達1.80。元素分析結果顯示，噴砂處理後或經過適當酸蝕的TZP表面上只有微量的表面殘留物。
並列摘要
This thesis studies the tetragonal zirconia polycrystals (TZP) surface conditions after various surface treatment methods including sandblasting, etching, and the hybrid treatment of sandblasting followed by etching. The synthetic diamond particles were used in sandblasting and the results were compared with those obtained by using particles of alumina and zirconia. The aqueous solutions used in etching were nitric acid, hydrofluoric acid, sulfuric acid, hydrochloric acid and potassium hydroxide. It is found that synthetic diamond sand can effectively increase the surface roughness and the surface area ratio of TZP specimen. The variations of surface roughness parameters have positive correlation with air pressure and particle size when synthetic diamonds are used. The main reason is due to the consistent cutting edge of the particles. The mixed aqueous solution of nitric acid and hydrofluoric acid can generate the tiny granular structure on the specimen surface, and effectively increase the surface area. The rough surface after sandblasting can be maintained after acid etching treatments. The surface area ratio Sdr value increases to 1.80 by the hybrid treatment. The EDX analysis shows that there are just slight surface residues of the TZP surface after sandblasting or after appropriate etching treatments.