An Epidemiologic Study of Tooth Retention After Nonsurgical Endodontic Treatment in a Large Population in Taiwan

Chen, Shih Chung; Chueh, Ling Huey; Hsiao, Chuhsing Kate; Tsai, Miao Yu; Ho, Shih Chang; Chiang, Chun-Pin

doi:10.1016/j.joen.2006.11.022

Cited by 86 publications

(75 citation statements)

References 9 publications

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“…Failure to recognize the presence of an extra DL root in root canal treatment may lead to incomplete debridement of the root canal system and eventually treatment failure. According to the epidemiologic study of tooth retention after nonsurgical endodontic treatment in Taiwan, the 5-year retention rate was 95.4% for the anterior teeth, 93.6% for the premolars, and 91.1% for the molars (19). More molars (70.1%) were extracted than premolar (62.6%) and anterior teeth (23.4%); this is, in part, because of more complex canal anatomy of molars than premolars and anterior teeth.…”

Section: Clinical Researchmentioning

confidence: 99%

The Morphologic Characteristics of the Distolingual Roots of Mandibular First Molars in a Taiwanese Population

Chen

Lee

Pai

et al. 2009

Journal of Endodontics

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Section: Clinical Researchmentioning

confidence: 99%

The Morphologic Characteristics of the Distolingual Roots of Mandibular First Molars in a Taiwanese Population

Chen

Lee

Pai

et al. 2009

Journal of Endodontics

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“…1 An integral therapeutic option in the treatment and prevention of apical periodontitis, nonsurgical root canal therapy (NSRCT) has been proven to be effective in retaining teeth that would otherwise be lost. 2,3,4,5,6,7 Successful endodontic healing has classically been based on satisfying the criteria of reducing or eliminating apical lesions and an absence of clinical symptoms. 8 Even when adhering to the rigorous standard of healing, success rates of NSRCT have been shown to be 56%-96%.…”

mentioning

confidence: 99%

“…11 Because of the complexities involved with deciphering outcomes of large samples, several researchers have defined success as the absence of retreatment, apical surgery, or extraction. 5,6,7,12,13 In composite, these additional treatments have been assigned the designation of untoward events and allow for more robust outcomes assessments that are based on tooth survival. 5,6,7,12,13 Many factors have been associated with the long-term success of endodontic therapy.…”

mentioning

confidence: 99%

“…5,6,7,12,13 In composite, these additional treatments have been assigned the designation of untoward events and allow for more robust outcomes assessments that are based on tooth survival. 5,6,7,12,13 Many factors have been associated with the long-term success of endodontic therapy. These include but are not limited to the absence of an apical lesion, use of dental dams during treatment and core placement, use of surgical operating microscopes, periodontal condition, structural integrity/restorability of the tooth, biofilms, and effective post-endodontic restoration.…”

mentioning

confidence: 99%

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Outcomes of Primary Endodontic Therapy Provided by Endodontic Specialists Compared with Other Providers

Burry

Stover

Eichmiller

et al. 2016

Journal of Endodontics

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Introduction: The objective of this study was to compare the outcomes of initial nonsurgical root canal therapy for different tooth types provided by both endodontists and other providers. Methods: By using an insurance company database, 487,476 initial nonsurgical root canal therapy procedures were followed from the time of treatment to the presence of an untoward event indicated by Current Dental Terminology codes for retreatment, apical surgery, or extraction. Population demographics were computed for provider type and tooth location. KaplanMeier survival estimates were calculated for 1, 5, and 10 years. Hazard ratios for provider type and tooth location were calculated by using the Cox proportional hazards model. Results:The survival of all teeth collectively was 98% at 1 year, 92% at 5 years, and 86% at 10 years. Significant differences in survival on the basis of provider type were noted for molars at 5 years and for all tooth types at 10 years. The greatest difference discovered was 5% higher survival rate at 10 years for molars treated by endodontists. A hazard ratio of 1.394 was found when comparing other providers' success with that of endodontists within this 10-year molar group. Conclusions: These findings show that survival rates of endodontically treated teeth are high at 10 years after treatment regardless of provider type. Molars treated by endodontists after 10 years have significantly higher survival rates than molars treated by non-endodontists.

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“…Endodontic disease is associated with multiple-bacterial infection, where root canal therapy serves as a significantly effective treatment method [1][2]. Although successful therapy depends on many factors, one of the most important steps in any root canal treatment is canal preparation [3].…”

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confidence: 99%

Tooth anatomy risk factors influencing root canal working length accessibility

et al. 2011

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The aim of this study was to analyze the specific influence of root canal anatomy on the accessibility of working length during root canal therapy. Four hundred seventy-six root canal therapy cases (amounting to a total of 1 005 root canals) were examined. The anatomy risk factors assessed in each case included: tooth type (tooth location), root canal curvature, and root canal calcification, as well as endodontic retreatment. The investigation examined the correlation between each of these anatomic factors and the working length, with statistical analysis consisting of Chi-square tests and multiple logistic regression analysis. In an independent factor analysis, tooth type (tooth location), root canal curvature, canal calcification, and endodontic retreatment were determined to be the primary risk factors. In a multiple-factor regression model, root curvature and canal calcification were found to most significantly influence root canal working length accessibility (P<0.05). Root canal anatomy increases the difficulty of root canal preparation. Appropriate consideration of tooth anatomy will assist in accurate determination of preparation difficulty before instrumentation. This study alerts clinical therapists to anatomical factors influencing the working length accessibility, and allows for a direct estimate of success rate given in situ measurements of tooth factors during the root canal treatment procedure.

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An Epidemiologic Study of Tooth Retention After Nonsurgical Endodontic Treatment in a Large Population in Taiwan

Cited by 86 publications

References 9 publications

The Morphologic Characteristics of the Distolingual Roots of Mandibular First Molars in a Taiwanese Population

The Morphologic Characteristics of the Distolingual Roots of Mandibular First Molars in a Taiwanese Population

Outcomes of Primary Endodontic Therapy Provided by Endodontic Specialists Compared with Other Providers

Tooth anatomy risk factors influencing root canal working length accessibility

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