两种排龈方法的排龈效果比较及对牙周GBI与PD的影响研究

目的探讨排龈线和排龈膏此两种排龈方法的排龈效果,以及二者对牙周局部健康产生的影响。方法选择2010年1月～2012年1月于我院行金属烤瓷单冠修复的患者38例76颗牙作为研究对象,38例行金属烤瓷单冠修复的患者随机分为排龈线组40颗牙和排龈膏36颗牙两组,比较两组的排龈效果及治疗前后不同时间牙周出血指数(GBI)与牙周袋深度(PD)的变化情况。结果排龈膏组总记录时间、留置在龈沟内的时间均明显短于排龈线组(P<0.01)。两组在牙预备体、印模、修复体边缘方面的满意度比较,差异无统计学意义(P>0.05)。排龈膏组无疼率明显高于排龈线组(P<0.01)。排龈线组治疗后1周、治疗后4周以及治疗后6个月GBI均较治疗前有显著变化(F=3.721,P<0.05),且治疗后1周、治疗后4周以及治疗后6个月其GBI值较排龈膏组存在明显差异,而排龈膏组除治疗后1周GBI较治疗前升高外,而治疗4周及治疗后6个月后其GBI较治疗前未见明显变化。两组治疗后1周的PD值均较治疗前明显升高,且排龈线组较排龈膏组变化更显著,而两组治疗后4周的PD值较治疗前明显升高,但较治疗后1周明显降低,且排龈线组较排龈膏组变化更显著。结论排龈线和排龈膏排龈效果基本相似,但排龈膏对排龈技术要求较低,且排龈过程中对牙周组织无损伤,同时患者不会感受到明显的痛觉,且操作时间短。

Gingival retraction effect and impact on periodontal GBI and PD of two kinds of gingival retraction methods

Objective To investigate the effect of gingival retraction cord and gingival paste on the impact of periodontal local health.Methods 38 patients underwent single crown prosthodontics using porcelain fused to metal crown(PFM) were randomly divided into two groups.Treatment effect,periodontal bleeding index(GBI) and periodontal pocket depth(PD) changes before and after treatment in different times were compared.Results The total recording time of the gingival retraction paste group was significantly shorter than that in the retraction cord group(P<0.01).The satisfaction of the two groups in the tooth preparation,impression,the edge of the prosthesis,the difference was not statistically significant(P>0.05).No pain rate in Gingival retraction paste group was significantly higher than that in the retraction cord group(P<0.01).The GBIs after treatment of 1 week,4 weeks and 6 months in retraction cord group had significant change,compared with those before treatment(F=3.721,P<0.05).While The GBIs after treatment of 1 week,4 weeks and 6 months in retraction cord group had significant change,compared with those in the gingival retraction paste group.GBI after treatment of 1 week had significance,compared with that before in gingival paste group.,the PD values were significantly increased compared with those before treatment and gingival retraction cord group increased more than the gingival cream group.But PD value after treatment 6 weeks was obviously lower than that after treatment 1 week.Conclusion The effect of gingival retraction cord is similar to that of gingival retraction paste.But gingival retraction paste has following advantages: requiring lower the technical skills,having no damage to periodontal tissue,the patient feeling no significant pain and shorter operating time.