| Abstract: | 在牙科中常用的復物材料，主要包括金屬、陶瓷、樹脂等。鈦與鈦合金被廣泛使用在牙科修復物中，由於它具有高耐腐蝕性、良好的機械性質以及生物相容性。複合樹脂具有可塑性、操作簡易、價格低廉等。本研究目的主要是對鈦金屬進行表面處理，試圖提升樹脂與鈦金屬間的鍵結強度，並探討熱處理溫度與時間、浸泡處理、冷熱循環對於兩種材料間的鍵結強度之影響。實驗結果，鈦金屬經700~800℃的熱處理後，鈦金屬與牙科樹脂間的鍵結強度(三點抗折與剪切試驗)明顯大於對照組(49.41 MPa與7.69 MPa)，隨著溫度增加鍵結強度有提高的趨勢，透過較短時間的熱處理，便可獲得好的鍵結強度(72.89~77.63 MPa與8.67~9.01 MPa)。經700℃熱處理之後，再浸泡處理(1 M NaOH與1 M H2SO4)後的鍵結強度並沒有提高趨勢。經過6,000與20,000次的冷熱循環試驗後，試片的鍵結強度無明顯下降。從實驗結果顯示，鈦金屬經過熱處理有助於提升複合樹脂與鈦的鍵結強度，在短時間熱處理可獲較好的效果。
In dentistry dental restoration mainly include the metal, the ceramics, the resin.Ti and its alloys are generally used for dental restorations, because of their corrosion, good mechanical properties, excellent biocompatibility, and the composite resin has the plasticity, easy operation, cheaper etc. The purpose of this study was to research the effects of surface treatments to strength on boning between titanium and dental resin, so we would like to improve the both bonding strength.The experimental result, Ti were heat treated at different temperature(700℃~800℃), the both bonding strength(three point flexure strength、Shear bond strength test) is better than the control group(49.41 MPa, 7.69 MPa),
increases its along with the temperature for the both bonding strength to have the enhancement tendency, and then may obtain the good results by the short heat treatment time (70.45~77.63 MPa, 7.31~9.01 MPa).Then pre –Titanium, 700℃ group condition, were taken to immerse NaOH and H2SO4 solution , the experimental results present that immersion groups were not obvious difference for bonding strength. It is not obvious dropping tendency for bonding strength after thermocycling test running 6000 times. When thermocycline test run 20000 times, bonding strength have slightly the declining trend. |
