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切髓术从1872年实施以来,业经种种改进,在临床上广泛应用。本法的成功关键在于所用药物是否良好,历来常用的药物有氧化锌丁香油酚和氢氧化钙两类。后者是从1920年起用于切髓术,各国对此此研究甚多。本研究是根据Calvital处方,将其中氢氧化钙及碘仿的剂量改变为三种不同的比例,以观察用于切髓术的效果。选取15～47岁病人的智齿及因正畸而需拔去的牙90例,分为A、B、C三组,每组各30例,在切髓后,分别以下列糊剂复盖断髓面,经1～675天,进行临床病理学的研究。
Since the implementation of cutting operation since 1872, after a variety of improvements, widely used in clinical practice. The key to the success of this Law lies in whether the drugs used are good or not. The commonly used medications include zinc oxide, eugenol and calcium hydroxide. The latter is used for incisional surgery since 1920, which is very much studied by various countries. This study was based on the prescription of Calvital, in which the dose of calcium hydroxide and iodoform was changed to three different ratios to observe the effect for cesarean section. Select the wisdom teeth of patients aged from 15 to 47 and orthodontics need to pull out the teeth of 90 cases, divided into A, B, C three groups, each group of 30 cases, respectively, after cutting, the following paste cover Mucous surface, after 1 ~ 675 days, for clinical and pathological studies.