The Efficacy of Rotary, Reciprocating, and Combined Non-Surgical Endodontic Retreatment Techniques in Removing a Carrier-Based Root Canal Filling Material from Straight Root Canal Systems: A Micro-Computed Tomography Analysis

Alakabani, Tarek-Fahed; Faus-Llácer, Vicente; Faus-Matoses, Ignacio; Ruiz-Sánchez, Celia; Zubizarreta-Macho, Álvaro; Sauro, Salvatore; Faus‐Matoses, Vicente

doi:10.3390/jcm9061989

Cited by 17 publications

(12 citation statements)

References 35 publications

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“…In the present study, the results showed that an increase to the next instrument size (tip size 30 to 40) might not directly correspond to a decrease in residual obturation material volume. Different methodologies, tooth types, instrument sizes, and motions can influence the shaping ability of the instruments [ 1 , 4 , 6 , 29 , 30 , 31 , 32 ]. Even though the number of unprepared areas was shown to be inversely proportional to the increase of each preparation size, a consequent thinner remaining dentin can compromise the tooth’s survival [ 11 , 28 , 33 ].…”

Section: Discussionmentioning

confidence: 99%

“…Non-surgical endodontic retreatment is challenging and, although there have been advancements in instrumentation technology, the predictability of filling material removal is still low. Strategies for cleaning and disinfection will essentially depend on either supplementary approaches or enlargement to even larger sizes [ 1 , 2 , 3 , 4 ]. Adjunctive procedures show controversial outcomes and still do not enable the thorough cleaning of root canals [ 5 , 6 , 7 , 8 , 9 , 10 ].…”

Section: Introductionmentioning

confidence: 99%

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Effect of Sonic Agitation of a Binary Mixture of Solvents on Filling Remnants Removal as an Alternative to Apical Enlargement—A Micro-CT Study

Ferreira

Babo

Braga

et al. 2020

JCM

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Background: This work aimed to evaluate the efficacy of sonic agitation of a binary mixture of solvents (methyl ethyl ketone/tetrachloroethylene) on filling remnants removal and compare the effects of solvent agitation with the enlargement to the next instrument size. Methods: Twenty-four mandibular incisors were prepared with ProTaper Next (X1, X2) and obturated with the single-cone technique and AH Plus sealer. The teeth were retreated with ProTaper Universal Retreatment and ProTaper Next and divided into two groups (n = 12) according to the final instrument (X3 or X4). All canals were submitted to a supplementary procedure consisting of a mixture of solvents―methyl ethyl ketone/tetrachloroethylene, agitated with EndoActivator. The volume of filling remnants was assessed through micro-computed tomography in the apical 5 mm. Statistical analysis was performed with a significance level of 5%. Results: The supplementary procedure of agitation of the solvent mixture was beneficial in both groups (p < 0.05). There were no statistically significant differences between canals re-prepared until X4 and canals re-prepared until X3 plus solvent (p > 0.05). Conclusions: An additional step with a two-solvent solution potentiated by EndoActivator showed to be very effective for the removal of gutta-percha and resinous sealer remnants from apical root canals of mandibular incisors, avoiding further enlargement.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effect of Sonic Agitation of a Binary Mixture of Solvents on Filling Remnants Removal as an Alternative to Apical Enlargement—A Micro-CT Study

Ferreira

Babo

Braga

et al. 2020

JCM

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“…NiTi retreatment files have no advantages over conventional techniques. Reciprocating and rotary systems exhibit similar capabilities in removing root filling material [13] . When used in the initial penetration stage, solvents can improve the root canal penetration of the files, but can make cleaning difficult and, if used after instrumentation, can reduce residual filling material [14] .…”

Section: Non-surgical Re-treatmentmentioning

confidence: 99%

Alternative treatments to endodontic failure at different stages

Cedillo¹,

Cepeda²,

Rangel³

et al. 2020

Int. J. Appl. Dent. Sci.

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Introduction:The main objectives of root canal treatment are to provide comfort, function, aesthetics and long-term prevention of re-infection. Endodontic treatment has success rates of between 86% and 98%. Treatment options after initial unsuccessful treatment include non-surgical retreatment, endodontic surgery, dental autotransplantation, intentional reimplantation and extraction. Objective: To review the literature on possible treatments to be performed following conventional endodontic treatment. Methodology: Information was searched in PubMed, SCOPUS and Google Scholar. Key words were used to search for information such as: "non-surgical retreatment", "apical surgery", "apicectomy", "autotransplantation", "intentional reimplantation". Results: Endodontic retreatment is a non-surgical procedure that involves the removal of previous filling materials, followed by cleaning, shaping and filling the canals. Apicoectomy involves surgical treatment of a tooth with a periapical lesion that cannot be resolved by routine endodontic treatment. Autotransplantation is the repositioning of an autogenous tooth at another site to replace teeth. Intentional replantation involves purposefully removing a compromised tooth and replanting the tooth in its socket. Conclusion:The first choice when dental treatment fails is non-surgical retreatment, which will allow the previously treated canal to be cleaned and better results to be obtained. Intentional reimplantation, although not the most appropriate treatment, has been shown to be successful and is considered one of the last treatment options.

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“…Additional agitation of intra-canals' irrigants by laser irradation, sonic or ultrasonic vibrations has been reported to significantly improve removal of fillings materials [13][14][15]. Reciprocating systems have also shown good results [8,[16][17][18][19]. Madarati et al found that reciprocating instruments were better than rotary instruments in removing root canals fillings [16].…”

Section: Introductionmentioning

confidence: 99%

Efficiency of reciprocating systems reciprocated at different angles in removing root-canals fillings with an MTA-type sealer: an Ex-vivo study

et al. 2022

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Background There have been no reports on the impact of different reciprocating angles on retreatment performance of reciprocating files. This ex-vivo study compared the efficiency of three reciprocating systems in removing MTA-type sealer-based filling materials and investigated the influence of different reciprocating angles on their retreatment ability. Methods 140 root-canals were instrumented to a 35 apical size and filled with an MTA-type sealer and gutta-percha cones. Samples were scanned by micro-computed-tomography and the root-canals fillings volumes were measured. Samples were divided into 7 groups according to the reciprocating angles at which the WaveOne-Gold (WOG), Reciproc-Blue (RB) and R-Motion (RM) systems were reciprocated to remove the root-canals’ fillings. The WOG-150/30, WOG-90/30, RB-150/30, RB-90/30, RM-150/30 and RM-90/30 groups in which the systems were reciprocated at 150/30 and 90/30 (counterclockwise/clockwise) angles. In the RB-270/30 group the RB system was reciprocated at 270/30 angles. Samples were re-scanned and the remaining filling materials’ (RFMs) volumes were measured. The percentage of the RFMs volume and its mean value for each group were calculated and data were statistically analysed at 0.05 significance level. Results The WOG system resulted in less RFMs (2.24%) when reciprocated at 90/30 angles compared to that resulted from the 150/30 angles (4.96%) [P = 0.002]. The RB system reciprocated at 90/30 angles resulted in less RFMs (2.67%) compared to that resulted from the 270/30 angles (6.64%) [P = 0.001]. The RFMs after using RM system reciprocated at 90/30 (6.02%) and 150/30 (7.61%) were greater than those of WOG (2.24 and 4.96%) and RB (2.67 and 4.34%) reciprocated at the same angles (P < 0.05). The longest time required to remove the filling materials was recorded with the RB-270/30 group (6.06 min) [P = 0.00]. The times required when the WOG, RB and RM files reciprocated at 90/30 angles (3.59, 3 and 3.05 mins, respectively) were shorter than those when files were reciprocated at 150/30 angles (5.25, 4.98 and 3.67 min, respectively) [P < 0.05]. Conclusions The WOG and RB systems removed more MTA-type sealer-based root-canals fillings than the RM system. Lower counterclockwise reciprocating angles improve the retreatment ability of reciprocating systems, especially the WOG system and can reduce the time required for retreatment procedures.

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The Efficacy of Rotary, Reciprocating, and Combined Non-Surgical Endodontic Retreatment Techniques in Removing a Carrier-Based Root Canal Filling Material from Straight Root Canal Systems: A Micro-Computed Tomography Analysis

Cited by 17 publications

References 35 publications

Effect of Sonic Agitation of a Binary Mixture of Solvents on Filling Remnants Removal as an Alternative to Apical Enlargement—A Micro-CT Study

Effect of Sonic Agitation of a Binary Mixture of Solvents on Filling Remnants Removal as an Alternative to Apical Enlargement—A Micro-CT Study

Alternative treatments to endodontic failure at different stages

Efficiency of reciprocating systems reciprocated at different angles in removing root-canals fillings with an MTA-type sealer: an Ex-vivo study

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