- 學位論文
可樂飲料對人體牙齒和常見牙科材料間歇沖蝕之影響
Effect of Cola Drinks on Intermittent Erosion of Human Teeth and Common-Used Dental Materials
摘要
本研究以市售原味可樂為腐蝕檢測液，採用人體自然牙齒試片及牙科臨床常用材料(鈦及其合金、牙科陶瓷、光固化樹脂)試片做體外腐蝕實驗，針對日常喝飲料行為，設計間歇沖蝕裝置來模擬口腔內牙齒或牙科材料與飲料之接觸情形，利用pH Meter、microbalance、Roughness Tester、SEM、等儀器進行分析腐蝕前後性質差異分析，並使用Potentiometer對鈦及其合金試片進行耐腐蝕測試。 實驗結果顯示，可樂在低溫高氣體含量下具有最大的腐蝕能力，試片在經過腐蝕實驗後，皆有重量損失、表面粗糙度與表面形貌上變化。自然牙齒經腐蝕實驗後發現，可在短時間內具有明顯腐蝕特徵，由浸泡腐蝕與間歇腐蝕兩種方式對比可看出，浸泡腐蝕後，重量損失為0.24％，間歇腐蝕則為0.48％，表面形貌上也可觀察出經間歇腐蝕後，牙冠表面出現明顯鱗片狀結構。牙科材料經腐蝕實驗後發現，雖然腐蝕影響較不明顯，但可觀察到浸泡腐蝕與間歇腐蝕的差異，經由間歇腐蝕後所得之重量損失數據為浸泡腐蝕的一半，從表面形貌上可觀察到，試片在經過腐蝕後，表面的刮痕逐漸平坦，而間歇腐蝕的變化比浸泡腐蝕較為明顯且快速。本此實驗所測得牙科材料耐腐蝕程度為: Ti-6Al-4V、純鈦、牙科陶瓷、光固化樹脂。
並列摘要
In this study, original-flavor cola was used as a corrosion test solution, and natural human tooth test specimen and other common dental materials (titanium and its alloy, dental ceramic, UV cureable resin) were used in vitro corrosion test. For daily drinking behavior, intermittent erosion devices are designed to simulate the contact of teeth or dental materials with beverages in the mouth. Using the pH Meter, microbalance, Roughness Tester, SEM, and other instruments, analysis for the difference in properties before and after corrosion was conducted, and the Potentiometer was used for corrosion resistance test of titanium and its alloy test specimens. The results show that cola has the greatest corrosion capacity under high-amount gas and low temperature. After the corrosion test, the test specimen showed a loss of weight as well as change of surface roughness and surface morphology. We found that natural teeth have obvious corrosion characteristics within a short time after corrosion test. Comparing the soaking corrosion with the intermittent corrosion, the following results were obtained. The weight loss after soaking corrosion was 0.24%, and the intermittent corrosion 0.48%. The surface morphology was observed after intermittent corrosion, and the surface of the crown showed a scaly structure. After the corrosion test, it was found that, although the corrosion effect upon the dental materials was not obvious, the difference between the immersion corrosion and the intermittent corrosion