Clinical effects of different therapeutic regimen on chronic periapical periodontitis for C -shaped root canals in mandibular second molars
10.3760/cma.j.issn.1008-6706.2015.20.025
- VernacularTitle:不同方案治疗下颌第二磨牙C形根管慢性根尖周炎效果比较
- Author:
Long ZHANG
;
Lina CHUN
- Publication Type:Journal Article
- Keywords:
Periapical periodontitis;
Root canal therapy;
Molar
- From:
Chinese Journal of Primary Medicine and Pharmacy
2015;(20):3119-3121,3122
- CountryChina
- Language:Chinese
-
Abstract:
Objective To investigate clinical effect of file hand stainless steel and nickel -titanium instru-ment combined with sonic endodontic on chronic periapical periodontitis for C -shaped root canals in mandibular sec-ond molars.Methods 140 patients with chronic periapical periodontitis for C -shaped root canals in mandibular sec-ond molar were chosen and randomly divided into two groups,including A group (70 patients)with file hand stainless steel and B group (70patients)with sonic endodontic combined with nickel -titanium instrument.The following -up success rate of root canal therapy,filling quality of root canal,incidence of pain reaction and complication of root canal preparation between the two groups were compared.Results The following -up success rate of root canal therapy in 6 months after treatment of A group and B group were 32.86%(23 /70),67.14%(47 /70).The following -up suc-cess rate of root canal therapy in 12 months after treatment of A group and B group were 64.29%(45 /70),72.86%(51 /70).The following -up success rate of root canal therapy in 6 months after treatment of B group was significantly higher than A group(χ2 =10.27,P <0.05).There was no significant difference in following -up success rate of root canal therapy in 12 months after treatment between the two groups(χ2 =2.14,P >0.05).The good filling rate of root canal of B group was significantly higher than A group(χ2 =9.70,P <0.05).The incidence rates of pain reaction of A group and B group were 48.57%(34 /70),21.43%(15 /70).The incidence rate of pain reaction of B group was significantly lower than A group(χ2 =12.15,P <0.05).The incidence rates of apical foramen deformation,wall perforation and step formation of A group were 6.54%(14 /214),0.93%(2 /214),7.94%(17 /214),those of A group were 7.73%(17 /220),0.91%(2 /220),1.82%(4 /220).The incidence rate of step formation of B group was significantly lower than A group (χ2 =11.14,P <0.05 ).There were no significant differences in the incidence rates of apical foramen deformation and wall perforation between the two groups (χ2 =3.11,1.06,P >0.05 ). Conclusion Nickel -titanium instrument combined with sonic endodontic on chronic periapical periodontitis for C -shaped root canals in mandibular second molars can efficiently improve rational symptoms,enhance filling quality of root canals and reduce pain degree and complication risk,the effect is better than file hand stainless steel for canal preparation.
