根充糊剂输送方式对糊剂分布模式的影响  

Investigation of influence on sealer distribution pattern generated by root canal sealer placement

作　　者：郑黎薇[1] 郝玉庆[1] 杨国彪[2] 夏凌云[2] 陈菁[2] 陈新梅[2] 

机构地区：[1]四川大学口腔疾病研究国家重点实验室,610041 [2]四川大学华西口腔医学院牙体牙髓病科

出　　处：《实用口腔医学杂志》2008年第3期367-370,共4页Journal of Practical Stomatology

摘　　要：目的:比较不同输送方式下根充糊剂在根管壁的分布模式,研究糊剂的输送方式对糊剂的分布模式的影响。方法:选择100颗离体单根管前牙,常规预备并充填根管。样本完全随机分组。使用横切法观察糊剂在根管壁的分布模式。结果:①不同输送方式下糊剂分布模式可有差异,表现为距根尖1mm处变异最大且有统计学意义;②Aa组表现为以Ⅳ型糊剂分布模式为主,Ab组表现为以Ⅱ型糊剂分布模式为主,B组各种分布模式平均出现,C组以Ⅳ型分布模式为主;③距根尖2mm与4mm处糊剂分布模式无统计学差异。结论:糊剂输送方式不同,糊剂分布模式可有差异,以距根尖1mm处变异最大;距根尖2mm与4mm处糊剂分布模式无统计学差异。Objective：To compare the sealer distribution pattern of the canal sealer under different placement method in order to investigate the influence on sealer distribution generated by root canal sealer placement. Methods- 100 ex vivo single canal anterior teeth were chosen and the root canals were prepared with a step-back method. The samples were divided into 3 groups randomly. Group A ： sealer placed by chief gutta pereha ; Group B ： sealer placed by K file;Group C：sealer placed by spreader. Tansseetion method was used to observe the sealer distribution pattern. Sealer distribution patterns were divided into 4 categories based on the sealer coated canal perimeter （PSCP） ： （ Ⅰ ） no sealer, （ Ⅱ ） sligbt-partial, （ Ⅲ ） moderate-partial, and （Ⅳ） complete coverage, which had 0-1/3 PSCP coverage, 1/3-2/3 PSCP coverage, 2/3-9/10 PSCP coverage, and 9/10-10/10 PSCP coverage respectively. Results ： （1） Sealer distribution varied with different placement methods. At 1 mm level there was a significant difference. （2）Aa group mainly demonstrated a IV type distribution; Ab group mainly demonstrated a Ⅱ type distribution, B group demonstrated the types distributed averagely, C group mainly demonstrated a IV type distribution. （3）There was no statistical difference at 2 mm and 4 mm level. Conclusion ： Place the same kind of sealer in different ways may affect the sealer distribution pattern. The most significant difference shows at the 1 mm level. At 2 mm and 4 mm level, distributions shows no statistical difference.

关 键 词：分布模式 输送方式 糊剂 

分 类 号：R781.05[医药卫生—口腔医学]