The influence of apical extent of root canal obturation on endodontic therapy outcome: a systematic review

Mello, Fernanda Weber; Miguel, Andressa Fernanda Paza; Ribeiro, Dayane Machado; Pasternak, Braulio; Porporatti, André Luís; Flores‐Mir, Carlos; Andrada, Ana Cristina; Garcia, Lucas da Fonseca Roberti; Dutra, Kamile Leonardi

doi:10.1007/s00784-019-02897-x

Cited by 14 publications

(14 citation statements)

References 59 publications

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“…In order to determine the circularity factors, the following formula was used: 4 × canal area/π (3.14) × largest diameter). 2,15 The area occupied by gutta-percha was converted into percentage considering the total area of the root canal.…”

Section: Analysis Of the Root Canal Configuration By Calculating The mentioning

confidence: 99%

“…The main purpose of the endodontic treatment is to maintain or re-establish the health of periapical tissues by cleaning, shaping, and filling the root canal system. 1,2 Cleaning is achieved by the associated use of endodontic instruments and chemical substances (irrigating solutions and intracanal dressings). 1 After, the root canal must be properly filled with inert materials (sealer and gutta-percha) in order to maintain the cleaning achieved at the previous stages.…”

Section: Introductionmentioning

confidence: 99%

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Correlation among Root Canal Configuration, Quality of Filling, and Its Sealability

et al. 2021

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Objective The study aimed to evaluate the existence of possible correlations among root canal configuration, quality of filling, and its sealability. Materials and Methods Sixty human mandibular central incisors were selected for this study. The teeth were prepared with the Profile 04 system up to instrument 35/0.04 and irrigated with 2.5 mL of 2.5% sodium hypochlorite at each instrument change. Root canal filling was performed by the lateral compaction technique, using gutta-percha and an epoxy resin-based sealer (AH Plus) labeled with 0.1% Rhodamine B dye. Afterward, the specimens were submitted to fluid filtration tests to assess the sealability of the filling. Cross-sections were obtained at −3, −6, and −8 mm from the root apex and submitted to a metallographic treatment to determine the root canal configuration and the percentage of gutta-percha filled areas. The data were statistically analyzed by the Grubbs test. Pairs of correlations were analyzed by applying the Spearman test at a level of significance of 5%. Results No correlation was observed among the analyzed variables as follows: root canal configuration versus filling quality (Spearman’s rho = 0.031); filling quality versus sealability (Spearman’s rho = 0.219); and root canal configuration versus sealability (Spearman’s rho = 0.184). Conclusion The root canal configuration did not affect the quality of the filling and its sealability.

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Section: Analysis Of the Root Canal Configuration By Calculating The mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Correlation among Root Canal Configuration, Quality of Filling, and Its Sealability

et al. 2021

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“…In fact, there is no consensus regarding the optimal length of obturation (10,24). Some studies based on radiographic analyses recommend RCO ending from 1 to 2 mm short of the radiographic apex (10,21,23).…”

Section: Endodontic Treatment In Young Molarmentioning

confidence: 99%

Effect of Endodontic Sealer in Young Molars Treated by Undergraduate Students - A Randomized Clinical Trial

et al. 2020

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The progression of caries in permanent molar teeth of young patients, frequently result in endodontic treatment. This randomized blinded clinical trial assessed the effect of two endodontic sealers (Sealer 26 and AH Plus) on the incidence of pain and apical repair after endodontic treatment of young molar teeth, and secondly identify factors associated with the outcomes. Endodontic treatment was performed by undergraduate students in molar teeth (n=69) of young patients (n=54) at the Endodontic and Restorative Public Extension Clinic Service. Protaper Next was used and the endodontic sealers were allocated which were restored with direct composite resin. Two primary clinical outcomes - apical repair and postoperative pain, were assessed after 12 and 24 months for blinded operators. Description of incidence rates and mixed-model regression using Generalized Estimation Equations (GEE). After 2 years 69 molar teeth of 54 patients were evaluated. No effect of the endodontic sealer was observed irrespective of period of evaluation. Apical repair incidences and asymptomatic teeth were, respectively, 90.5 and 89.3, 96.8 and 90.0% during 1 and 2 years of follow-up. Failed apical repair was associated with unsatisfactory pulpectomy (p=0.003) and periapical conditions (p=0.007) as well as their interaction (p=0.016). None of these independent variables was able to predict the occurrence of pain in both periods. Prognosis of apical repair is dependent on the initial conditions. Endodontic treatment of young molars associated with composite resin restorations performed by undergraduate students have satisfactory results after 2 years and was effective to prevent the risk of permanent teeth loss.

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“…The key aspect of an endodontic therapy is to sustain or re-establish the health of periapical tissues by cleaning, shaping [1], and filling [2] the root canals. Cleaning and shaping are achieved through the associated use of files and chemical substances (irrigating solutions and intracanal dressings) [1].…”

Section: Introductionmentioning

confidence: 99%

“…Then, the canals must be filled to maintain the cleaning obtained through the previous stages, trap the remaining microorganisms, interrupt the supply of nutrients necessary for their survival, and avoid contamination or recontamination [2].…”

Section: Introductionmentioning

confidence: 99%

Cyclic Fatigue, Torsional Resistance, and Angular Deflection of Two Heat-Treated Files: M-Wire Versus New F-Wire Technology

Khanvilkar

Mallishery

Sawant

et al. 2020

Metals

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The cyclic fatigue, torsional resistance, and angular deflection of a new Fire-Wire rotary file (CricENDO) were compared. A total of 20 files of each type were tested. Cyclic fatigue testing was performed for each group (n = 10) by measuring the number of cycles to fracture (NCF) in an artificial stainless-steel canal (60° angle of curvature, with a 6-mm radius) for each group. The torque and angle of rotation at the failure of each group (n = 10) were measured according to ISO 3630-1. The fractured surfaces were examined using scanning electron microscopy. Statistical analysis was carried out utilizing Student’s t-test at a significance level set at 5%. The Fire-Wire CricENDO rotary files were associated with a significantly higher number of cycles to fracture and time to failure (in seconds) compared to the M-Wire Protaper Next (p < 0.05). A significantly higher angular deflection to fracture was observed for CricENDO compared to Protaper Next (p < 0.05). The new Fire-Wire CricENDO rotary files exhibit higher cyclic fatigue resistance and angle of rotation to fracture than M-Wire Protaper Next. Without warning, file fracture may occur as a result of cyclic fatigue, torsional stress, or a combined effect of both. CricENDO rotary files may be an effective alternative in curved root canals as they exhibited elevated cyclic and torsional resistance. It will be helpful in eliminating one of the reasons for file fracture during the root canal treatment.

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The influence of apical extent of root canal obturation on endodontic therapy outcome: a systematic review

Cited by 14 publications

References 59 publications

Correlation among Root Canal Configuration, Quality of Filling, and Its Sealability

Correlation among Root Canal Configuration, Quality of Filling, and Its Sealability

Effect of Endodontic Sealer in Young Molars Treated by Undergraduate Students - A Randomized Clinical Trial

Cyclic Fatigue, Torsional Resistance, and Angular Deflection of Two Heat-Treated Files: M-Wire Versus New F-Wire Technology

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