到目前為止，汞齊合金仍是使用最廣泛的牙齒填充修補材之一，最常用於臼齒的蛀洞填補，汞齊合金具有價格低廉、修補容易、機械強度優異、微滲漏情形少不易造成二次蛀牙，且使用年限長等諸多優點。
本實驗研究在單成份球型汞齊合金中，添加鈀，並改變合金粉末的熱處理溫度，與添加經由球磨之合金粉末，以期能改善汞齊合金之性質。
實驗結果顯示，汞齊合金粉末在經由T3℃熱處理後，是所有熱處理條件中綜合性質最好的，且一小時的抗壓強度高於ADA所規範之80 MPa，潛變率也遠低於ADA所規範之3%上限，且汞蒸氣釋出率遠低於商用汞齊合金Tytin FC；而添加B1球磨10 min合金粉末之汞齊合金AB1T3的各項性質又稍稍優於AT3，證明適量的添加球磨粉末有助於改善汞齊合金之性質。且AT3和AB1T3這兩種汞齊合金經由冷熱循環試驗後仍能保有良好之機械性質，且皆能通過細胞毒性測試，符合美國國家標準局及美國牙科協會所製訂的ANSI/ADA specification No. 41規範。

Amalgam was used one of the most widespread tooth packing patching materials. It’s used for filling molar wormhole filled. Dental amalgam has a lot of advantage, containing low cost, patching easily, excellent mechanical strength, few micro-leakage causing not to be easy to create two times the dental cavity, long service life.
The aim of this study is to investigate the effects of change the heat treatment temperature of the alloy powder, adding the ball milled alloy powder, expect to improve the properties of amalgam containing palladium.
The results indicated that the powder of amalgam with T3℃ heat treatment has the best properties in all heat treatment condition. One hour compressive strength was higher than ADA standard 80 MPa, creep rate also far to be lower than 3% the upper limits ADA standard, and the mercury vapor release rate was lower than commercial amalgam alloy Tytin FC far. Amalgam containing B1 ball milled 10 min powder has superior to AT3 slightly. It proved that the right amount increase ball milled powder is helpful to improve amalgam.
AT3 and AB1T3 amalgam were able to hold the good mechanical properties after thermal cycle test, and all could through the cell culture cytotoxicity test, conform to ANSI/ADA specification No.41 standard.

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