E&Qplus根管充填技术与侧压充填技术封闭能力的比较

Study of the sealing ability of E&Q Plus technique

目的:评价并比较E&Qp lus技术和侧压技术的根尖封闭能力。方法:选取64个新鲜拔除的单直根管下颌前磨牙。4个做为阴性和阳性对照,60个随机分为6组(每组10个),预备至同一标准,分别采用两种充填技术配合三种不同种类的封闭剂(ADSEAL;cortisomol;Apexit)充填。X线牙片评价两种技术根管充填影像质量,通过20 g/L亚甲蓝染料渗透试验比较各组的根尖微渗漏。结果:①两种充填技术的根尖微渗漏有统计学差异(P<0.05)。②E&Qp lus技术充填组3种封闭剂的根尖封闭能力无统计学差异(P>0.05)。③侧压技术组3种封闭剂的根尖封闭能力有显著的差异,ADSEAL封闭剂最好,Apexit封闭剂居中,cortisomol封闭剂最差。④X线影像质量,E&Qp lus技术优于传统侧压技术(P<0.05)。结论:E&Qp lus技术的根尖封闭能力优于传统侧压技术,不同种类封闭剂对两种充填技术的根尖封闭能力均有影响,但程度不同。

AIM： To compare the apical sealability of E＆Qplus technique and cold lateral condensation technique in vitro and evaluate the effects of three different sealers to the sealability of E＆Qplus technique. METHODS： Sixty- four extracted human single -rooted teeth were devided randomly into six experimental groups （10 teeth of each ） , one group of two positive controls and one of two negative controls. Each group was filled with E＆Qplus technique or cold lateral condensation technique in combination with three different sealers （ADSEAL, cortisomol, Apexit ） respectively. Digital radiograghs of the qualities of filling was evaluated. Apical microleakage was evaluated with 2% methylene blue dye penetration. RESULTS： The digital X -ray showed E＆Qplus technique was better than the cold lateral condensation in a mesio - distal direction （ P 〈 0.05 ）. The measured results for the distance of dye penetration showed that the cold lateral technique had greater dye penetration compared with E＆Qplus technique（ P 〈 0.05 ）. To E＆Qplus technique, three sealers had no difference in terms of dye penetration（ P 〉 0.05 ）. To lateral condensation technique,the apical sealability of three sealers was different（ ADSEAL 〉 Apexit 〉 cortisomol）. CONCLUSION： Under laboratory conditions, E＆Qplus technique had better apical sealability than the cold lateral condensation technique. Effect of sealer was smaller to the E＆Qplus technique than to the cold lateral condensation technique.