Effect of intracanal irrigants on the bond strength of epoxy resin‐based and methacrylate resin‐based sealers to root canal walls

Vilanova, W. V.; Carvalho-Júnior, Jacy Ribeiro; Alfredo, Edson; Sousa‐Neto, Manoel Damião; Silva-Sousa, Yara Teresinha Corrêa

doi:10.1111/j.1365-2591.2011.01945.x

Cited by 98 publications

(122 citation statements)

References 32 publications

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“…However, in this present study, the SEM image revealed that the exposed porous collagen network remained intact even after final irrigation with 2.5% NaOCl for 1 min following 17% EDTA. This may explain those contradictory research results whether the final flush with NaOCl after 17% EDTA affects the bond strength of an epoxy resin sealer [7][8][9][10]28,29) . The use of NaOCl final flush in higher concentration or longer time period may result in collagen degradation decreasing the bond strength of an epoxy resin sealer to root dentin 10) .…”

Section: Discussionmentioning

confidence: 70%

“…Seventeen percent EDTA followed by NaOCl has been used as a final flush to create a clean, smear-free root canal dentin before root canal obturation 11,12) . Nevertheless, decreased bond strength of an epoxy resin sealer to root dentin after this final irrigation protocol was found [7][8][9] . Final irrigation with EDTA and NaOCl caused collagen degradation influencing the covalent bonds forming between an epoxy resin sealer and root dentin, thus decreasing the bond strength of an epoxy resin sealer to root dentin.…”

Section: Introductionmentioning

confidence: 99%

“…An epoxy resin sealer produced the highest bond strength to root dentin compared with other types of sealers 5) , due to the covalent bonds forming between the epoxide rings and the exposed amino groups in the collagen network of root dentin 6) . Unfortunately, the final irrigants which have been recommended to use before root canal obturation caused a decrease in the bond strength of an epoxy resin sealer to root dentin [7][8][9] . Each endodontic irrigant has its own particular properties that could cause a change in dentin structure and subsequently has a negative effect on the adhesion of an epoxy resin sealer to root dentin 10) .…”

Section: Introductionmentioning

confidence: 99%

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Epigallocatechin-3-gallate increased the push out bond strength of an epoxy resin sealer to root dentin

Pheenithicharoenkul

Panichuttra

2016

Dent. Mater. J.

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This study aimed to investigate the effect of epigallocatechin-3-gallate (EGCG) from green tea extract on the push out bond strength of an epoxy resin sealer to root dentin. Seventy single root canal premolars were decoronated and instrumented. The roots were randomly irrigated with different final irrigation protocols (n=16): 17%EDTA (EDTA), 17%EDTA followed by 2.5%NaOCl (EDTA+NaOCl), 17%EDTA followed by 1 mg/mL EGCG (EDTA+EGCG) and 1 mg/mL EGCG (EGCG). Other six root canals were received only 2.5%NaOCl as a control group. One root from each group (n=1) was excluded and prepared for SEM investigation. All root canals were then obturated and horizontally sectioned to perform the push out test. EDTA+EGCG group had the highest bond strength (p<0.05). EGCG group showed higher bond strength than EDTA group (p<0.05). The use of EGCG as a final irrigant significantly increased the push out bond strength of an epoxy resin sealer to root dentin.

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Section: Discussionmentioning

confidence: 70%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Epigallocatechin-3-gallate increased the push out bond strength of an epoxy resin sealer to root dentin

Pheenithicharoenkul

Panichuttra

2016

Dent. Mater. J.

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“…It suggests that this finding is due to the presence of silver crystals in the chemical composition of the sealer, which on one hand allows excellent radiopacity but on the other hand can obliterate the opening of dentinal tubules, thus hampering sealer penetration. On the other hand, AH Plus and MTA Fillapex present high flowability, facilitating intratubular penetration (22,23) Although endodontic sealers have shown similar results in some analyses, they did not penetrate the whole extension of the dentinal tubules. The deepest penetration of the sealer in all experimental groups was observed at 6, 4 and 2 mm from the root apex, in this order, which agrees with other studies (9,15,24).…”

Section: Discussionmentioning

confidence: 99%

Filling Effectiveness and Dentinal Penetration of Endodontic Sealers: A Stereo and Confocal Laser Scanning Microscopy Study

et al. 2015

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The aim of this study was to evaluate the filling effectiveness and dentinal penetration of the sealers AH Plus, Pulp Canal Sealer EWT, Sealapex and MTA Fillapex applied according to the vertical condensation technique using thermoplastic gutta-percha. Forty singlerooted teeth were selected. After chemical-mechanical preparation and root-canal filling, sections of the root (2, 4 and 6 mm from the apex) were obtained and analyzed by stereo microscopy and confocal laser scanning microscopy. Data were tabulated and statistically analyzed. With regard to the assessment of void spaces in the filling material at 2 mm from the apex, the sealers showed similar results, but at 4 and 6 mm from the apex, MTA Fillapex had inferior performance compared to AH Plus (at 4 mm), Pulp Canal Sealer EWT (at 4 and 6 mm) and Sealapex (at 6 mm) (p<0.05). With regard to the penetration into dentinal tubules at 2 mm from the apex, the sealers also showed similar results, but at 4 and 6 mm Pulp Canal Sealer EWT had an inferior performance compared to MTA Fillapex and AH Plus, respectively (p<0.05). All four sealers were found to be similar regarding adaptation of the filling material to the root canal walls, except the MTA Fillapex, which showed failures at 4 and 6 mm from the root apex. With regard to the ability to penetrate into the dentinal tubules, the sealers were found to be equivalent, except for the Pulp Canal Sealer EWT as it had poorer results at 4 and 6 mm compared to MTA Fillapex and AH Plus, respectively.

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“…By using transparent petrochemicals in building sockets, more flexibility and comfort is afforded. But these chemicals have the possibility of being hazardous and unsafe due to the off-gassing, facilitating movement of carcinogens and endocrine disrupting chemicals to the patient [10][11][12][13][14][15][16]. Many of these same chemicals are being used in the process lamination of the socket.…”

Section: Introductionmentioning

confidence: 99%

Can prosthetic limbs made too quickly cause kidney damage?: a pilot study

Petrofsky

Browne

Jamshidi

et al. 2014

PTRS

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Objective: The use of chemicals for building prosthetic sockets present the possibility of being hazardous and unsafe due to off-gassing. The purpose of the present study was to investigate if freshly made materials used in prosthetic sockets causes off-gassing that would penetrate the skin and cause damage to the kidneys or blood. Design: Cross-sectional study. Methods: In this research, the off-gassing effects during the initial curing process of styrene monomer, vinyl ester resin, epoxy methacrylate resin, benzene-1, 3-dimethaneamine, trimethylhexanedlamine, and paratertiarybutylphenol were analyzed. Acid detection strips were placed inside newly fabricated mock-prosthetic sockets and left overnight in a closed environment to find out if acid was present in the invisible fumes. The plastic was worn by 9 subjects and urinalysis was made after 48 hours to test for any kidney or blood toxicity of the resins. Results: After wearing the plastic cuff for 48 hours, the ratio of protein to creatinine in the urine was raised to an abnormal level in five out of nine subjects. Four out of the nine subjects showed normal protein to creatinine ratios after wearing the device. The results showed that damage to the kidney occurred from wearing the resins after curing in half of the subjects. Conclusions: It is very important to conduct patient intakes which includes the assessment of renal function. Off-gassing in vented chambers may be needed to protect both prosthetists and patients.

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Effect of intracanal irrigants on the bond strength of epoxy resin‐based and methacrylate resin‐based sealers to root canal walls

Abstract: Except for 1% NaOCl, the removal of smear layer with the other irrigants increased the bond strength of AH Plus to intracanal dentine. The use of 1% NaOCl for 30 min with 17% EDTA as final irrigant for 5 min increased the bond strength of Epiphany.

Cited by 98 publications

References 32 publications

Epigallocatechin-3-gallate increased the push out bond strength of an epoxy resin sealer to root dentin

Epigallocatechin-3-gallate increased the push out bond strength of an epoxy resin sealer to root dentin

Filling Effectiveness and Dentinal Penetration of Endodontic Sealers: A Stereo and Confocal Laser Scanning Microscopy Study

Can prosthetic limbs made too quickly cause kidney damage?: a pilot study

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