A prospective study of the factors affecting outcomes of non-surgical root canal treatment: part 2: tooth survival

Ng, YL; Mann, Vera; Gulabivala, K

doi:10.1111/j.1365-2591.2011.01873.x

Cited by 323 publications

(324 citation statements)

References 23 publications

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“…Previous studies have demonstrated unexpected anatomical variables and complexities in maxillary incisors [14], as well as in maxillary and mandibular premolars [15]. Furthermore, the maxillary premolars are more susceptible to vertical root fracture [16]. These conditions can help to explain the higher incidence of failure of endodontic treatment in these teeth.…”

Section: Discussionmentioning

confidence: 99%

“…Epidemiological studies have shown a higher percentage of failure [20,21] when the root canal therapy is performed by general clinicians, when compared to treatments that were performed by specialists, which have a success rate of up to 94% [2]. Moreover, the quality of coronal restorations can also contribute to failure of endodontic therapy [16], which is in accordance with the findings of the present study, where the failure or fracture of coronal restoration retained by composite resin, amalgam, prosthetic crown, or provisional material represented a significant percentage of cases that were indicated for new root canal treatment.…”

Section: Discussionmentioning

confidence: 99%

“…These findings are in accordance with the previous study of Fuss et al [22] who noted coronal leakage in endodontically treated teeth that led to non-restorable caries, and was the main reason for extraction in these cases. It suggests a correlation between restorative treatment and success of endodontic therapy in the maintenance of dental elements in the oral cavity, considering the importance in the prevention of recontamination of the root canal system [16,23]. Furthermore, the relation between coronal restoration and apical periodontitis has been explored in several retrospective clinical trials, suggesting that failure or fracture on coronal restoration is a factor related to development of this pathology [24].…”

Section: Discussionmentioning

confidence: 99%

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Analysis of reasons for retreatment and extraction of endodontically treated teeth: A transversal study

Souza

Haas

Franco

et al. 2017

Rev. Odonto Ciênc. (Online)

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OBJECTIVE: Was to analyze the reasons related to retreatment and extraction of endodontically treated teeth. METHODS: Data were collected consecutively during a 12-month period from data of patients who had indication for root canal retreatment or extraction of endodontically treated teeth after an initial visit. The patients were scheduled for a new consultation and the need for root canal retreatment or extraction was confirmed by three previously calibrated examiners. After that, a clinical form was completed, including data about the patient and tooth, presence of apical radiolucency, reasons for root canal retreatment or extraction, and the treatment option. The aforementioned variables related to the patients and the teeth were computed and are given as their absolute value and percentage. RESULTS: Inadequate filling was the most frequent reason (40.5%) to perform root canal retreatment; non-surgical root canal retreatment was the most frequent treatment option (95%). Failure or fracture on definitive restoration (prosthetic crown) was the most frequent reason (30%) to perform extraction of endodontically treated teeth; tooth extraction with prosthetic rehabilitation was the most frequent treatment option (78%). CONCLUSION: Inadequate filling and failure or fracture on definitive restoration associated with apical radiolucency should be taken into account during the decision-making process regarding endodontically treated teeth with questionable prognosis.Key words: Endodontically treated teeth; Retreatment; Extraction Análise das razões para retratamento e extração de dentes tratados endodonticamente: um estudo transversal RESUMO INTRODUÇÃO: Analisar razões relacionadas com retratamento e extração de dentes tratados endodonticamente. METODOLOGIA: Os dados foram coletados consecutivamente durante 12 meses a partir de pacientes que tiveram indicação para retratamento ou extração de dentes tratados endodonticamente após uma consulta inicial. Os pacientes foram agendados para uma nova consulta e a necessidade de reatratamento ou extração foi confirmada por três examinadores previamente calibrados. Em seguida, um formulário clínico foi preenchido, incluindo informações sobre o paciente e o dente acometido, presença de lesão periapical, razões para retratamento ou extração e a opção de tratatamento. As variáveis mencionadas foram computadas e descritas como valor absoluto e percentual. RESULTADOS: Obturação inadequada foi a razão mais frequente (40.5%) para realizar o retratamento endodôntico; o retratamento convencional não-cirúrgico foi a mais frequente opção de tratamento nesses casos (95%). Falha ou fratura de restaurações definitivas (coroas protéticas) foi a razão mais frequente (30%) para realizar a extração de dentes tratados endodonticamente; a reabilitação protética foi a mais frequente opção de tratamento nesses casos (78%). CONCLUSÃO: Obturação inadequada e falha ou fratura em restaurações definitivas associadas com lesão periapical devem ser levados em consideração durante o processo de tom...

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Analysis of reasons for retreatment and extraction of endodontically treated teeth: A transversal study

Souza

Haas

Franco

et al. 2017

Rev. Odonto Ciênc. (Online)

View full text Add to dashboard Cite

show abstract

“…Significant post-operative restorative factors included presence of cast restoration versus temporary restoration presence of cast post and core, proximal contacts with both mesial and distal adjacent teeth and terminal location of the tooth. [7] Traditionally, three aspects are associated in the analysis of RCT success -the clinical, radiographic and microscopic characteristics. In the clinical context, two of these aspects normally guide the decision-making process: clinical history (symptoms -absence; sensitivity, discomfort and/or pain; physical exam -normality; edema, fistula, excessive mobility) and interpretation of images (signs of periapical health; periapical bone radiolucency ).…”

Section: Discussionmentioning

confidence: 99%

Rationale for Endodontic Treatment Failures A Radiographic Evaluation Study

Praveena¹,

Deepthi²

2017

IOSR JDMS

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“…Presumably, in a significant number of cases it also results in failure of RCT by possible miss of the root canal, by perforation, or even instrument separation, whereas reliable epidemiological data on this presumption are not available [7]. A supposable reason for the lack of this knowledge is, that most studies investigating failures of RCT or reasons for tooth extraction do not look at this eventually impairing parameter [8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Narrowing of the radicular pulp space in coronally restored teeth

2016

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OBJECTIVES Narrowed radicular pulp spaces are frequently observed in teeth wearing extended restorations. The present study investigates whether the narrowing of particularly the radicular pulp space can be attributed to coronal restorations. MATERIALS AND METHODS The study is based on an anonymized copy of the cone-beam computed tomography (CBCT) database from the Center of Dental Medicine of the University of Zurich. One hundred CBCT scans were selected out of 7317 data sets to match either a crowned (group A; n = 50) or a filled tooth (group B; n = 50) with a contralateral healthy, unrestored, and caries-free control tooth at the same position, respectively. Cross-sectional images were adjusted in the coronal, middle, and apical root third of each subjected tooth. Screenshots were taken in that position and analyzed. The area occupied by the pulp space was determined as percentage area of the whole root diameter on each cross section. The resulting values were compared between restored and control teeth. RESULTS In both groups (crowned and filled teeth) and in all the three root thirds, the radicular pulp space was significantly narrower in the restored teeth compared to the control teeth. The strongest narrowing effect was observed in the coronal root third and it decreased towards the apical root third (both groups). CONCLUSIONS Teeth with coronal restorations show within the limitations of the present study a significant narrowing of their radicular pulp space. CLINICAL RELEVANCE The asserted narrowing could have a complicating effect if root canal treatment becomes necessary in those teeth. Abstract:Objectives: Narrowed radicular pulp spaces are frequently observed in teeth wearing extended restorations. The present study investigates whether the narrowing of particularly the radicular pulp space can be attributed to coronal restorations. Materials and Methods:The study is based on an anonymized copy of the cone-beam computed tomography (CBCT) database from the center of dental medicine of the university of zurich. One hundred CBCT scans were selected out of 7317 data sets to match either a crowned (group A; n=50) or a filled tooth (group B; n=50) with a contralateral healthy, unrestored, and caries-free control tooth at the same position, respectively. Cross-sectional images were adjusted in the coronal, middle and apical root third of each subjected tooth. Screenshots were taken in that position and analyzed. The area occupied by the pulp space was determined as percentage area of the whole root diameter on each cross-section. The resulting values were compared between restored and control teeth. Results:In both groups (crowned and filled teeth) and in all three root-thirds, the radicular pulp space was significantly narrower in the restored teeth compared to control teeth. The strongest narrowing effect was observed in the coronal root third and it decreased towards the apical root third (both groups). Conclusions:Teeth with coronal restorations show within the limitations of the present stu...

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A prospective study of the factors affecting outcomes of non-surgical root canal treatment: part 2: tooth survival

Abstract: The 4-year tooth survival following primary or secondary root canal treatment was 95%, with thirteen prognostic factors common to both.

Cited by 323 publications

References 23 publications

Analysis of reasons for retreatment and extraction of endodontically treated teeth: A transversal study

Analysis of reasons for retreatment and extraction of endodontically treated teeth: A transversal study

Rationale for Endodontic Treatment Failures A Radiographic Evaluation Study

Narrowing of the radicular pulp space in coronally restored teeth

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