Effect of Root Canal Therapy on the Success Rate of Teeth with Complete Roots in Autogenous Tooth Transplantation
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Autogenous tooth transplantation is a reliable method for repairing missing teeth. Although it recently became a recognized and feasible treatment method in dentistry, the long-term efficacy of root canal therapy (RCT) has not been well confirmed. This study is aimed at determining whether RCT has a good effect on the success rate of teeth with complete roots in autogenous tooth transplantation.Data were collected from the Korea University Guro Hospital. Data of patients who underwent autogenous tooth transplantation within 9 years were collected. We selected 29 teeth with complete roots as the research subjects in our study. None of the patients had any systemic diseases. All cases in this study were obtained with patient permission.According to the tooth vitality test, the autogenous teeth tested negative in dental pulp test and function. Nine of the 29 teeth with autogenous tooth transplantation were treated with RCT and survived throughout the observation period. However, 20 autogenous teeth were not treated with RCT, and eight of them did not survive. All statistical analyses were performed using IBM SPSS 20.0. The null hypothesis was rejected (p < 0.05).For complete root teeth, the success rate after autogenous tooth transplantation after RCT is higher than that of teeth not treated with RCT.Topics:
Objective To evaluate the therapeutic effects of one visit root canal therapy(RCT) and several visit RCT for cracked teeth.Methods Cracked teeth with pulposis or apical disease were randomized to receive one visit RCTor several visit RCT,their responses were compared.Results The long-term therapeutic effects of one visit RCT were batter than those of several visit RCT,but the differences were not significant.The concomitant symptoms were significantly less and treatment time was significantly shorter in one visit RCT group as compared with several visit RCT group.Conclusion One visit RCT is recommended for the RCT of cracked teeth.
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Objective To analyze causes and countermeasures of root canal treatment failure.Methods 24 cases of root canal treatment failure in our hospital from December 2008 to December 2013 were selected,with 37 teeth.We conducted data analysis,summed up and found out corresponding countermeasures according to medical reasons,X-ray and clinical manifestations.Results Serious periapical lesions and less filling root canal were main reasons for root canal treatment failure,root canal secondary infection was another important reason for treatment failure; root canal omissions,fractured tooth,secondary caries,internal and external absorption of root canal,super charge also had important influence on root canal treatment.Conclusions Serious periapical lesions and less filling root canal are main reasons for root canal treatment failure.It may improve root canal treatment success rate to improve clinical filling technology and achieve in root canal disinfection.
Key words:
Root canal treatment; Reasons for failure; Countermeasures
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AIM: To investigate whether root canal lubricant could facilitate the removal of intra-canal bacteria.METHODS: One hundred anterior teeth diagnosed as chronic periapical periodontitis were prepared to F3 using hand-used Protaper by crown-down technique,with or without root canal lubricant.Immediately before and after preparation,paper points were dipped in the canal for 30 seconds,then inoculated on medium and cultured under appropriate conditions.CFU were counted to investigate the ability of root canal lubricant to remove intra-canal bacteria.RESULTS: Root canal preparation with mechanical method could reduce the number of bacteria in root canals of both group(P0.05).Furthermore,the CFU of the root canal lubricant group was significantly less than that of the control group without lubricant.CONCLUSION: Root canal lubricant could facilitate removing bacteria in root canal during preparation procedure.
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Zen Nihon Shinkyu Gakkai zasshi (Journal of the Japan Society of Acupuncture and Moxibustion) (2010)
【目的】質の高い鍼灸の臨床研究デザインについて啓発を図る目的で、 18施設の教員28名を対象に、 腰痛の被験者評価者マスク・sham鍼対照RCTの模擬実践を行った。 【方法】対象者を評価者、 治療者、 被験者に分けてそれぞれの役割を担当しながら研究デザインの理解を深めさせた。 この試みの教育効果を評価するために、 模擬RCT実践前後にEvidence-Based Medicine (EBM) の必要性、 RCT用語の理解度についてVisual Analogue Scale (VAS) を用いた質問調査を行った。 【結果】RCTの理解度はVAS値が58.0±27.2から75.7±25.7に上昇し、 また、 RCT用語の理解度も上昇した。 模擬終了後に19名が今後RCTの実施および教育への導入を検討すると回答した。 【結論】模擬RCTはRCTの理解度を高め鍼灸教育への導入を促進させる効率のよい実践法であることが示唆された。
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無作為化比較試験（RCT, randomized controlled trial）が新しい治療法の効果を評価するためにヒトに施される実験であり，かつまた，それが最も質の高い科学的なエビデンスを提供してくれる唯一の研究デザインであることは世界的に広く認められた事実である．一方，日本では，RCT に対する関心とその重要性への認識は低く，薬効評価の分野でも質の高い RCT はきわめて少なかった．最近の科学的根拠に基づく医療（EBM）の流行により RCT に対する関心は高まっているものの，RCT を正しく理解して実践できる臨床医，製薬メーカの臨床開発担当者は少ない．このことは補完代替医療の評価においても全く同様にあてはまる．RCT を正しく理解し，デザインし，その結果を正しく評価できる研究者，実務家の養成は急務である．本小論では，RCT とは何か，RCT をデザインする上で必要不可欠な統計学的考え方を解説する．
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Objective To evaluate the clinical responses and effects after one visit RCT and several visits RCT. Meth-ods Cracked teeth with endodontitis or periapical disease were randomized into 2 groups according to they were treated by one visit RCT or several visits RCT,and their clinical responses and effects. Results The long-term effects of one visit RCT was better than that of several visits RCT. But There was no statistical differences between two groups. The clinical responses and treating time were reduced dramatically after one visit RCT was used. Conclusion One visit RCT is recom-mended for the cracked teeth RCT.
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Objective:To analyze the factors of root canal therapy failure.Methods:One hundred and thirty-eight failed treated teeth were analyzed according to the treatment records,clinical examination,pretreatment radiographs and rood canal exploration during root canal therapy.Results:For failure teeth with root canal therapy,58.7% indicated under-filling;16.7% was over-filling;7.2% was perfect-filling;11.6% was missing canal;5.8% was occurring complication in the root canal.Conclusion:Root canal preparation and/or incomplete filling were the main causes for the root canal therapy.
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Root canal therapy is generally considered to be the most effective way to remove inflammation and infection in the root canal. However, the presence of persistent infection in the root canal may lead to a failure of the treatment. Therefore, the complete removal of root canal infection is essential for the success of root canal therapy. The purpose of root canal therapy is to clear up the intra-canal infection and thoroughly sterilize the root canal, and then fill up the root canal system with dimensionally, so as to prevent reinfection. This article focuses on the main methods and problems of the current root canal infection and the strategy of eradicating the infection in the root canal.根管治疗术被普遍认为是去除根管内炎症及感染的最有效方法。然而，由于根管内持续感染的存在，可能导致治疗失败。因此，彻底清除根管内的感染对根管治疗成功至关重要。根管治疗的目的是清除根管内感染并对根管进行彻底消毒，继而对根管系统进行三维严密的充填，防止再感染。本文着重介绍当前根管内感染清除的主要方法、存在的问题以及根管内感染的控制策略。.
Root (linguistics)
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Objective To investigate and evaluate the clinical effect of EDTA root canal irrigation solution combined with micro ultrasonic technique for root canal therapy in the elderly.Methods We collected 298 teeth in the elderly that needed root canal therapy and used EDTA root canal irrigation solution combined with micro-ultrasonic technique for root canal therapy.The clinical efficacy of root canal therapy was observed and evaluated two years after therapy.Results Two year after therapy,the root canal therapy was successful in 236 teeth,with the success rate of 79.18%.Conclusion The root canal therapy in the elderly by EDTA root canal irrigation solution combined with micro-ultrasonic technique is feasible and effective.
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Root canal therapy is the common treatment for endodontic infections. Successful root canal therapy depends on favorable root canal preparation, root canal medication and three-dimensional obturation of the root canal system. The key to successful root canal therapy is to prevent re-infection of the highly complex root canal systems by removing infecious biofilms and bacterial toxins in the root canal system. The present paper reviews the pathogenic mechanism of the Enterococcus faecalis in the harsh environment of root canal system, the inflammation and immunity of refractory periapical periodontitis and the progress of infection control methods.根管治疗是治疗牙髓感染的常用方法。成功的根管治疗依赖于良好的根管预备、冲洗消毒以及对三维根管系统的严密充填，其中通过清除根管系统内感染生物膜、细菌毒素以防止高度复杂的根管系统再次感染是根管治疗成功的关键。本文从根管内严苛环境下粪肠球菌的致病机制、根管顽固感染的根尖周组织炎症与局部免疫、感染根管控制方法进展等方面，对这一主题进行阐述。.
Enterococcus faecalis
Periapical periodontitis
Pulpitis
Endodontic therapy
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