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本研究应用184个离体人牙,进行根尖染料微渗漏实验,探讨镓合金做根管倒充填材料的可行性。镓合金是由银、锡、铜、钯合金粉加入镓、铟、锡液调制而成的无汞合金。 材料和方法 将全部离体人切牙切除根表面残余组织及牙石,截冠,清洗及扩大根管至60~#,用5.25％次氯酸钠冲洗,以ZOE糊剂加牙胶尖充填。37℃水浴
In this study, 184 in vitro human teeth, root tip dye microleakage experiments to explore the feasibility of gallium alloy root canal filling material. Gallium alloy is made of silver, tin, copper, palladium alloy powder added gallium, indium, tin solution made of mercury-free alloy. MATERIALS AND METHODS All the incisors were excised from the residual root tissue and calculus on the root surface and the crown was removed. The root canal was cleaned and expanded to 60 ~ #, rinsed with 5.25% sodium hypochlorite, and filled with ZOE paste and gutta percha. 37 ℃ water bath