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目的通过两种不同位置的沟槽固位充填II类洞大面积龋坏观察对牙髓的刺激。方法选择2008年3月至2009年3月来我院口腔科行龋齿充填的患者,共119例146颗患牙,全部为II类洞型。随机分为2组,每组73颗,Ⅰ组:利用洞缘沟槽固位;Ⅱ组:利用洞底沟槽固位。结果Ⅰ组:出现牙髓炎症状2颗,占3%、Ⅱ组:出现牙髓炎症状7颗,占10.3%。结论龋齿充填时,利用洞缘沟槽固位比洞底固位对牙髓刺激较少。
Objective To observe the dental pulp stimulation of large area carious lesions of type II cavities by filling the grooves in two different positions. Methods From March 2008 to March 2009 to our hospital stomatology dental caries filling patients, a total of 119 cases of 146 teeth, all for the Class II hole type. Randomly divided into two groups, each group of 73, group Ⅰ: the use of Dongyuan trench retention; Ⅱ group: the use of trench trenches retention. Results Group Ⅰ: 2 pulpitis symptoms occurred, accounting for 3%; group Ⅱ: 7 pulpitis symptoms occurred, accounting for 10.3%. Conclusions During the filling of dental caries, the dental pulp stimulation is less stimulated by the retention of the hole edge retention ratio than that at the bottom of the hole.