Aim: To evaluate the clinical effect on pulpal-periapical diseases treated with the compound hydroxyapatite and titanium point root canal filling materials.
目的：观察复方羟磷灰石钛尖根管充填料治疗牙髓尖周病的临床疗效。
Objective To study the absorbent properties of standard paper point in simulant root canal in vitro.
目的研究模拟根管中标准纸尖的吸液性能。
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