根据戊二醛为双功能试剂,且因具有效的蛋白交键因子,有很强的固定作用。近年多提倡用戊二醛替代甲醛甲酚作活髓切断术。材料和方法用5只狗做实验对象,于每只狗的16个上、下前牙上作活髓切断术。把一个含有2.5%20μl~(14)C-戊二醛(活性为6.25×10~5dpm/μ1)的小棉球放在切断面上5分钟, According to glutaraldehyde as a bifunctional reagent, and because of effective protein cross-linking factor, there is a strong role in the fixed. In recent years, more to promote the use of glutaraldehyde instead of formaldehyde cresol for pulpotomy. Materials and Methods Subjects were treated with 5 dogs and were treated with live pulp on 16 upper and lower anterior teeth of each dog. A small cotton ball containing 2.5% 20 μl to 14 C-glutaraldehyde (activity 6.25 × 10 -5 dpm / μl) was placed on the cut surface for 5 minutes,