Success rate in root canal therapy. A retrospective study of conventional cases

Harty, F J; Parkins, B J; Wengraf, A M

doi:10.1038/sj.bdj.4802429

Cited by 111 publications

(43 citation statements)

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“…However, other studies could not verify such an association [3–9]. Similarly, radiographically visible voids along root fillings were associated with a less favorable outcome [3, 10, 11]; however, Sjögren et al [12] and Heling et al [8] reported that the homogeneity of root fillings had no significant influence on the outcome. Inadequate instrumentation often leads to short root fillings, whereas over instrumentation results in extruded filling material, which may also include infected matter and dentin chips [13].…”

Section: Introductionmentioning

confidence: 99%

The association between complete absence of post-treatment periapical lesion and quality of root canal filling

Liang

Wesselink

et al. 2012

Clin Oral Invest

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AimThe technical quality of a root canal treatment is clinically judged by the apical extension and homogeneity of the filling material imaged by periapical radiographs (PA). The aim of this experiment was to evaluate the association between the technical quality of the root canal filling and treatment outcome.Materials and methodsIn 234 teeth (268 roots) that underwent root-canal treatment, the quality of the root canal filling as well as the outcome of the treatment were assessed with both PA and cone-beam computed tomography (CBCT) 2 years after treatment. Satisfactory root filling on PA was defined as 0–2 mm within the radiographic apex without voids; on CBCT scans, the apical end of the canal replaced the radiographic apex. The outcome predictors were analyzed using multivariate logistic regression.ResultsAt recall, periapical radiolucent areas were absent in 198 (74%) roots on PA and 164 (61%) roots on CBCT scans. The presence of preoperative periapical radiolucency and the quality of root filling and coronal restoration were identified by both PA and CBCT as outcome predictors (p < 0.01). Complete absence of post-treatment periapical radiolucency was observed in CBCT scans in 81% and 49% of satisfactory and unsatisfactory root fillings, respectively, as compared to 87% and 61% revealed by PA.ConclusionSatisfactory root fillings were associated with a favorable outcome, confirmed by both PA and CBCT.Clinical relevanceThe outcome of root canal treatment is improved once the filling is 0–2 mm from the apex, and no voids could be detected. Technical skills and performance of root canal filling procedures should be emphasized, and suitable methods should be developed in order to achieve more compacted filling materials without voids and at the correct length.

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Section: Introductionmentioning

confidence: 99%

The association between complete absence of post-treatment periapical lesion and quality of root canal filling

Liang

Wesselink

et al. 2012

Clin Oral Invest

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“…하악 제1 대구치의 근 심 치근에서 isthmus의 발생 빈도는 다양하게 보고되고 있 다. Hsu와 Kim 14) 은 54-89%, von Arx Ⅲ. 실험 성적 20) , 외 과적 근관치료의 성공률도 전치, 소구치에 비하여 낮다 21) . 그 원인으로는 시야의 확보나 접근의 곤란함, 해부학적 다 양성 등을 고려할 수 있으며, isthmus의 존재를 인지하지 못하였거나 원심측의 타원형 또는 리본 모양의 근관으로 인 해 실패하는 경우도 많다 22) .…”

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Morphology of the apical root canal system in Korean mandibular first molar

Jeong

Park

et al. 2009

J Korean Acad Conserv Dent

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The aim of this study was to investigate the shapes and diameters of the physiological foramen and anatomy of the root canal at 3mm from apex in mandibular first molars.Sixty mandibular first molars were randomly selected. The apical anatomy of 60 mandibular first molars was investigated by means of a stereomicroscope (60x magnification).The results were as follows; 1. There was a high percentage of two physiological foramina in mesial (61.67%) and one foramen in distal(71.66%) roots of mandibular first molars.2.There was a high frequency of accessory foramina in mesial roots with one foramen (26.07%).3. The diameters of physiological foramen was as follows:•0.329mm in single mesial foramen •0.266mm in mesiobuccal foramen and 0.246mm in mesiolingual foramen •0.375mm in single distal foramen •0.291mm in distobuccal foramen and 0.237mm in distolingual foramen 4. The most common physiological foramen shape was oval (69.93%). 5. The incidence of isthmus in mesial root at 3mm from apex was 55%. The 3mm-sections contained a complete isthmus 31.66% and a partial isthmus 23.34%.6. 3mm from the apex, the most common canal shape was oval (50.64%). Knowledge of the apical anatomy of mandibular first molar would be necessary for success of surgical and nonsurgical endodontic treatment. [J Kor Acad Cons Dent 34(2):136-143, 2009]

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“…Parameters fbr such assessment range from precision technology measurement of diseasespecific blood components to a subjective, clinical assessment of the patietit's condition. Several retrospective studies have been carried out on endodontic treatment (3)(4)(5)(6)(7)(8)(9)(10)(11)(12)(13)(14)(15)(16)(17)(18)(19)(20); however, it is generally agreed that results fiom stuh studies are essentially not comparable. Several retrospective studies have been carried out on endodontic treatment (3)(4)(5)(6)(7)(8)(9)(10)(11)(12)(13)(14)(15)(16)(17)(18)(19)(20); however, it is generally agreed that results fiom stuh studies are essentially not comparable.…”

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confidence: 99%

The periapical index: A scoring system for radiographic assessment of apical periodontitis

Ørstavik

Kerekes

Eriksen

1986

Dental Traumatology

888

704

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A scoring system for registration of apical periodontitis in radiographs is presented. The system is termed the periapical index (PAI) and provides an orditial scale of 5 scores ranging from 1 (healthy) to 5 (severe periodontitis with exacerbating features). Its validity is based on the use of leference radiographs of teeth with verified histological diagnoses. Results from studies involvirig 11 observers and 47 selected radiographs document that the PAI system is reasonably accurate, reproducible and able to discriminate between sub-populations. It may also allow for results from diflerent researchers to be compared. The syst(;iTi may be suitable for the analysis of periapieal radiographs in epidemiologieal studies, in clinical trials and in retrospective analyses of treatment results in endodonties.

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Success rate in root canal therapy. A retrospective study of conventional cases

Cited by 111 publications

References 0 publications

The association between complete absence of post-treatment periapical lesion and quality of root canal filling

The association between complete absence of post-treatment periapical lesion and quality of root canal filling

Morphology of the apical root canal system in Korean mandibular first molar

The periapical index: A scoring system for radiographic assessment of apical periodontitis

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