title: [Clinical observation of one-visit root canal therapy by microwave instrument]
abstract: OBJECTIVE:To analysis post-treatmental reaction and long-term effect of one-visit root canal therapy by microwave instrument. METHODS:Applying heat effect and the other ones of microwave,the changes of dentine tissue of extracted teeth were observated by SEM examination.48hs and 1 year post-treatmental effect of 47 patients of periapical periodontitis treated by one-visit root canal therapy were observated and compared with the results of 54 cases treated with common method.RESULTS:In the cases of acute and chronic periapical periodontitis microwave applied in root canal therapy can close the openings of dentine,enhance the effects of sterilization and decrease times of treatment.CONCLUSION:Microwave applied in one-visit root canal therapy is competent.
authors.affiliation: Shanghai Nanshi District Dental Clinics,Shanghai 200010,China.
authors.forename: H Q
authors.initials: HQ
authors.lastname: Zhang
authors.forename: H Z
authors.initials: HZ
authors.lastname: Yao
authors.forename: G Q
authors.initials: GQ
authors.lastname: Chen
authors.forename: D F
authors.initials: DF
authors.lastname: Sun
authors.forename: W J
authors.initials: WJ
authors.lastname: Zhong
authors.forename: F Y
authors.initials: FY
authors.lastname: He