1.a whitish rubber derived from the coagulated milky latex of the gutta-percha tree.
一种发白的橡胶，来自古塔树的凝乳胶。
2.Group 1: filled with zinc oxide-eugenol sealer and gutta-percha (ZOE) (the control group);
第1组：氧化锌丁香油糊剂组（ZOE）（对照组）；
3.Methods Forty-five mandibular second molar with C-shaped canal which were extracted were divided into 3 groups. They were then filled with AH Plus paste,AH Plus paste with gutta percha and ZOE paste with gutta percha respectively in lateral condensation technique.
方法收集因各种原因拔除的下颌第二恒磨牙 ,且具有C形根管特征 ,共 4 5颗 ,随机分为 3组 ,分别用AHPlus糊剂以及AHPlus糊剂加牙胶尖、ZOE糊剂加牙胶尖以侧压法进行根管充填。
4.The effect of different fungi on the decomposition of cellulose in the leaves of Eucommla ulmoides were studied to select suitable ones for the extraction of gutta-percha.
摘要研究不同真菌微生物在提胶过程中对杜仲叶纤维素的分解效果，从而筛选出适合于杜仲叶发酵分解的菌类。
5.The result indicated that the irritation of the MPU 03 material on periapical tissue was less than the root canal sealer and Gutta percha( P < 0.01).
结果显示：MPU－03材料对根尖周组织的刺激性明显轻于常规的糊剂牙胶尖充填材料（P＜0．01）。
6.There were significant differences between the single thermoplasticized gutta-percha filling group and the other three groups with paste (P < 0.05), but no significant differences between ZOE, Vitapex and AHplus paste (P >0.05).
在使用糊剂的实验组中,染色线的长度由小到大依次是AHplus1.70±0.82mm、Vitapex1.87±0.56mm和ZOE2.02±0.40mm,但3组之间没有统计学差异(P>0.05)。
7.Class 17 Rubber, gutta-percha, gum, asbestos, mica and goods made from these materials and not included in other classes; plastics in extruded form for use in manufacture; packing, stopping and insulating materials; flexible pipes, not of metal.
商标注册类别17橡胶、古塔波胶、树胶、石棉、云母以及由这些原材料制成但不属别类的制品；生产用半成品塑料制品；包装、填充和绝缘用材料；非金属软喉管。
8.The apex micro effusion and micro-chink of lateral condensation group are significantly larger than the other two groups (P<0.05). However, there was no statistical difference between the two injection thermoplasticized gutta-percha technique groups (p>0.05).
微渗漏及微缝隙方面在冷牙胶侧方加压法与两组热塑牙胶注射加压方法之间也存在显著差异(P＜0.05)，而两组热塑牙胶间却无明显差别(P＞0.05)。
9.All the root canal in the experimental groups were obturated with ObturaⅡthermoplasticized gutta - percha injection technique. The root canals in the group A, B, C were separately sealed with ZOE, Vitapex and AHplus paste, and the specimens in the group D were filled without any paste.
实验组均采用ObturaⅡ注射式热熔牙胶进行根管充填,A、B、C组分别以ZOE糊剂、Vitapex糊剂、AHplus糊剂作为根管封闭剂,D组仅使用热牙胶充填不使用根管封闭剂。
10.The result shows that the formula (NR 50phr, BR 30phr, Gutta-Percha 20phr, stearic acid 5phr, magnesia 2phr, zinc oxide 2phr, antioxidant D 1phr, high abrasion fine furnace black 50phr, aromatic oil 5phr, sulfur 2phr, accelerant DM 2phr) is the most excellent.
研究结果表明:天然橡胶50份,顺丁橡胶30份,杜仲胶20份,硬脂酸5份,氧化镁2份,氧化锌2份,防老剂D 1份,高耐磨炉黑50份,芳烃油5份,硫磺2份,促进剂DM 2份组成的配方所制备的硫化胶具有良好的综合物理机械性能;
