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Puetate CFS, Girotto AC, Zaniboni JF, Gelio MB, Besegato JF, Kuga MC. Sealing of pulp chamber dentin in endodontics: Influence of bond strategy and time-point application. JOURNAL OF CONSERVATIVE DENTISTRY AND ENDODONTICS 2024; 27:514-519. [PMID: 38939549 PMCID: PMC11205169 DOI: 10.4103/jcde.jcde_80_24] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/12/2024] [Revised: 03/12/2024] [Accepted: 04/01/2024] [Indexed: 06/29/2024]
Abstract
Context Seal the dentin of the pulp chamber during endodontic treatment to avoid interfering with the restorative treatment performed afterward. Aims The aim was to evaluate the effect of three adhesive systems applied in different bonding strategies (etch-and-rinse, self-etch, and universal adhesive) and time-point application (immediately after the cavity access preparation or after endodontic obturation) on the hybrid layer formation and dentinal penetrability. Materials and Methods Forty-eight sound molars were randomly distributed into six groups (n = 10) according to the adhesive system used: Forty-eight sound molars were randomly distributed into six groups (n = 10) according to the adhesive system used and the time-point application: Adper Scotchbond Multi-purpose (AS), Clearfil SE (CF) and Scotchbond Universal (SU) in strategy of immediate endodontic sealing (IES) or delayed endodontic sealing (DES). In IES-AS, IES-CF, and IES-SU groups, dentin sealing was performed immediately after the cavity access, while in DES-AS, DES-CF, and DES-SU, after root canal obturation. The specimens were sectioned in the long axis, in a buccal-lingual direction, and the dentinal penetrability of the adhesive systems was evaluated using confocal microscopy images. Hybrid layer formation was analyzed by scanning electron microscopy images. Statistical Analysis Used Dentinal penetrability data were analyzed with the ANOVA test and the Kruskal-Wallis test was performed for hybrid layer data (α = 0.05). Results IES-CF showed the lowest dentinal penetrability (P < 0.05), while the other protocols were similar to each other (P > 0.05). No significant differences were found between groups regarding the hybrid layer formation (P > 0.05). Immediate and DES protocols do not influence the hybrid layer formation, regardless of the bond strategy used. Conclusions Sealing the pulp chamber dentin before endodontic treatment can improve the bond strength of the final restoration but the formation of the hybrid layer was not influenced by the bond strategy.
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Affiliation(s)
| | - Aline Carvalho Girotto
- Department of Restorative Dentistry, School of Dentistry, São Paulo State University, Araraquara, Sao Paulo, Brazil
| | - Joissi Ferrari Zaniboni
- Department of Restorative Dentistry, School of Dentistry, São Paulo State University, Araraquara, Sao Paulo, Brazil
- School of Dentistry (FAODO), Federal University of Mato Grosso do Sul, Campo Grande, Mato Grosso do Sul, Brazil
| | - Mariana Bena Gelio
- Department of Restorative Dentistry, School of Dentistry, São Paulo State University, Araraquara, Sao Paulo, Brazil
| | - João Felipe Besegato
- School of Dentistry (FAODO), Federal University of Mato Grosso do Sul, Campo Grande, Mato Grosso do Sul, Brazil
| | - Milton Carlos Kuga
- Department of Restorative Dentistry, School of Dentistry, São Paulo State University, Araraquara, Sao Paulo, Brazil
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Marcomini N, Albaricci MCDC, Costa JLDSG, Besegato JF, Godoy EF, Dantas AAR, Kuga MC. Effects of alpha-tocopherol antioxidant on fracture strength and adhesion of endodontically treated teeth restored after dental bleaching. Eur J Oral Sci 2024; 132:e12965. [PMID: 38115770 DOI: 10.1111/eos.12965] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2023] [Accepted: 11/14/2023] [Indexed: 12/21/2023]
Abstract
This study evaluated the effect of different concentrations of alpha-tocopherol in gel form on fracture strength, hybrid layer formation, and microtensile bond strength of endodontically treated teeth bleached with 40% hydrogen peroxide (H2 O2 ). Sixty bovine incisors were randomized into one of six groups (n = 10 incisors per group) defined by the interventions carried out after endodontic treatment. In the control group, no additional intervention was carried out, while all teeth in the five intervention groups were bleached with 40% H2 O2 and subsequently treated with alpha-tocopherol at concentrations of 15% (15AT), 20% (20AT), or 25% (25AT), with 10% sodium ascorbate (10SA), or with nothing (40HP). Fracture strength was evaluated in a mechanical testing machine, hybrid layer formation was assessed using scanning electron microscopy, and bond strength was determined using microtensile bond-strength testing. Data were analyzed using Kruskal-Wallis and Dunn's tests. No statistically significant difference regarding fracture strength was observed among groups. Hybrid layer formation was greater in the 15AT group than in groups 40HP and 10SA. Teeth in groups 15AT, 20AT, and 25AT demonstrated higher bond strength than teeth in groups 40HP and 10SA. Alpha-tocopherol, preferably at 15%, effectively reverses the deleterious effects, of bleaching, on hybrid layer formation and bond strength to dentin.
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Affiliation(s)
- Natália Marcomini
- Department of Restorative Dentistry, School of Dentistry, Araraquara, São Paulo State University - UNESP, Araraquara, São Paulo, Brazil
| | - Maria Carolina da Costa Albaricci
- Department of Restorative Dentistry, School of Dentistry, Araraquara, São Paulo State University - UNESP, Araraquara, São Paulo, Brazil
| | - Joatan Lucas de Sousa Gomes Costa
- Department of Restorative Dentistry, School of Dentistry, Araraquara, São Paulo State University - UNESP, Araraquara, São Paulo, Brazil
- Department of Restorative Dentistry, School of Dentistry, Federal University of Minas Gerais - UFMG, Belo Horizonte, Minas Gerais, Brazil
| | - João Felipe Besegato
- School of Dentistry, Federal University of Mato Grosso do Sul - UFMS, Campo Grande, Mato Grosso do Sul, Brazil
| | | | - Andréa Abi Rached Dantas
- Department of Restorative Dentistry, School of Dentistry, Araraquara, São Paulo State University - UNESP, Araraquara, São Paulo, Brazil
| | - Milton Carlos Kuga
- Department of Restorative Dentistry, School of Dentistry, Araraquara, São Paulo State University - UNESP, Araraquara, São Paulo, Brazil
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Lin W, Gao Y, Chen S, Yang Y, Ye W, Tran D, Bergeron BE, Tay FR, Ma J. A facile method for rejuvenating the bonding efficacy of root canal sealer-smeared dentine. J Dent 2023; 136:104591. [PMID: 37356560 DOI: 10.1016/j.jdent.2023.104591] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2023] [Revised: 06/12/2023] [Accepted: 06/14/2023] [Indexed: 06/27/2023] Open
Abstract
OBJECTIVES To examine the efficacy of glycine powder air-polishing on cleaning root canal sealer-smeared dentine. METHODS Dentine surfaces were contaminated with a smear of epoxy resin-based sealer or tricalcium silicate-based sealer. The contaminated surfaces were cleaned with saline, 75% ethanol, or air-polishing with glycine powder. Uncontaminated dentine was used as the control. The cleanliness of pulpal floor dentine was examined using scanning electron microscopy and energy dispersive X-ray analysis. The effectiveness of the three cleaning protocols was examined by testing the tensile bond strength of a self-etching adhesive to the decontaminated dentine. Resin infiltration into the dentinal tubules was identified using confocal laser scanning microscopy (CLSM). RESULTS Morphological examination and elemental analysis indicated that glycine powder air-polishing was more effective in removing the two sealers. Tensile bond strength of adhesive-bonded dentine was significantly reduced when either sealer was cleaned with saline or ethanol. Conversely, air-polishing restored the adhesive strength of the sealer-smeared dentine to the level of the control. Longer and denser resin tags were identified with CLSM when sealers were removed with air-polishing. CONCLUSIONS Air-polishing with glycine powder was effective in cleaning sealer-smeared dentine, as demonstrated by the rejuvenation of the tensile bond strength of a self-etching adhesive to the decontaminated dentine. CLINICAL SIGNIFICANCE Glycine powder air-polishing improves the cleanliness of root canal sealer-smeared dentine and rejuvenates adhesive bonding effectiveness.
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Affiliation(s)
- Wenqing Lin
- Department of Stomatology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, Hubei Province, China
| | - Yuan Gao
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases, Department of Cariology and Endodontics, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, Sichuan Province, China
| | - Surong Chen
- Department of Stomatology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, Hubei Province, China
| | - Yan Yang
- Department of Stomatology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, Hubei Province, China
| | - Weihu Ye
- Department of Stomatology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, Hubei Province, China
| | - Diana Tran
- Department of Endodontics, Dental College of Georgia, Augusta University, Augusta, GA, USA
| | - Brian E Bergeron
- Department of Endodontics, Dental College of Georgia, Augusta University, Augusta, GA, USA
| | - Franklin R Tay
- Department of Endodontics, Dental College of Georgia, Augusta University, Augusta, GA, USA
| | - Jingzhi Ma
- Department of Stomatology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, Hubei Province, China.
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Zaniboni JF, de Souza V, Escalante-Otárola WG, Leandrin TP, Fernández Godoy E, Besegato JF, Kuga MC. Cleaning and microstructural effects of amyl acetate on pulp chamber dentin impregnated with epoxy resin-based endodontic sealer. J ESTHET RESTOR DENT 2022; 34:1282-1289. [PMID: 36161756 DOI: 10.1111/jerd.12966] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2022] [Revised: 08/22/2022] [Accepted: 09/02/2022] [Indexed: 11/28/2022]
Abstract
OBJECTIVE To evaluate the cleaning potential of 95% ethanol, acetone, and amyl acetate solutions used solely or in association, to remove epoxy resin-based sealer residues from pulp chamber dentin and their microstructural effects. MATERIALS AND METHODS One hundred and eighty bovine incisor specimens were divided into nine groups according to the cleaning protocol: ET (ethanol); AC (acetone); AA (amyl acetate); E1: AA+AC; E2: AA+ET; E3: AC+ET; E4: AA+AC+ET; PC (positive control), and NC (negative control). All groups were impregnated with epoxy resin-sealer, except NC. Ninety specimens were divided into groups (n = 10) for evaluation of persistence of residues and amount of open dentinal tubules by SEM analysis and evaluation of chemical compounds on the dentin surface after cleaning with electron dispersive spectroscopy. The others 90 specimens were submitted to Knoop microhardness evaluation. Persistence of residues data were submitted to the Kruskal Wallis and Dunn tests (α = 0.05). Open dentinal tubules and microhardness data were submitted to one-way ANOVA and Mann Whitney tests (α = 0.05). RESULTS AA and E4 protocols showed the lowest persistence of residues. E4 group had the highest incidence of open dentinal tubules. E3 and E4 groups showed no changes in the atomic ratio Ca/P, which was similar to NC group. E4 group did not present W, an element presents in all the other groups. ET and E4 protocols showed the smallest reduction in dentin microhardness. CONCLUSIONS The combination of amyl acetate, acetone and ethanol is the most effective and safe protocol to remove epoxy sealer residues on pulp chamber dentin. Moreover, it has the lowest microhardness reduction. CLINICAL SIGNIFICANCE The combined use of amyl acetate, acetone, and ethanol enhanced the cleaning of pulp chamber dentin with minimal microstructural damage.
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Affiliation(s)
- Joissi Ferrari Zaniboni
- Department of Restorative Dentistry, School of Dentistry, São Paulo State University, Araraquara, Brazil
| | - Vitor de Souza
- Department of Restorative Dentistry, School of Dentistry, São Paulo State University, Araraquara, Brazil
| | | | - Thaís Piragine Leandrin
- Department of Restorative Dentistry, School of Dentistry, São Paulo State University, Araraquara, Brazil
| | - Eduardo Fernández Godoy
- Department of Restorative Dentistry, Universidad de Chile, Santiago, Chile.,Instituto de Ciencias Biomédicas, Universidad Autonoma de Chile, Santiago, Chile
| | | | - Milton Carlos Kuga
- Department of Restorative Dentistry, School of Dentistry, São Paulo State University, Araraquara, Brazil
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Boderé PJ, Calberson F, De Bruyne M, De Moor R, Meire M. Protocols for cleaning the incisor access cavity contaminated with epoxy resin sealer. Eur J Oral Sci 2022; 130:e12894. [PMID: 36065089 DOI: 10.1111/eos.12894] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2022] [Accepted: 08/09/2022] [Indexed: 11/28/2022]
Abstract
This study compared different methods for cleaning the sealer-contaminated access cavity of upper incisors. After standard endodontic access, the canals of 50 extracted maxillary incisors were chemomechanically prepared and obturated with gutta-percha and epoxy resin sealer. Teeth were randomly assigned to one of five different pulp chamber cleaning protocols (n = 10): air/water spray, ethanol-saturated cotton pellet (CP), ethanol-saturated microbrush reaching the root filling (MB), MB + air polishing (PROPHYflex; KaVo), or MB + etching with 37% phosphoric acid. Each tooth was split and the sealer-covered area of the pulp chamber was determined on images taken before and after cleaning using image analysis software. The sealer-covered area was compared across groups using one-way ANOVA. Greatest mean sealer-covered area reduction was observed for MB + etching (98.0%), MB + air polishing (95.2%), and MB alone (92.8%), yielding a significantly higher sealer-covered area reduction than after air/water spray (8.3%) and ethanol-saturated cotton pellet (53.4%). The upper incisor access cavity is best cleaned with an ethanol-saturated microbrush reaching up to the root filling, followed by air/water spraying and etching. The use of cotton pellets should be discouraged.
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Affiliation(s)
- Pieter-Jan Boderé
- Department of Oral Health Sciences, Section of Endodontology, Ghent University, Ghent, Belgium
| | - Filip Calberson
- Department of Oral Health Sciences, Section of Endodontology, Ghent University, Ghent, Belgium
| | - Mieke De Bruyne
- Department of Oral Health Sciences, Section of Endodontology, Ghent University, Ghent, Belgium
| | - Roeland De Moor
- Department of Oral Health Sciences, Section of Endodontology, Ghent University, Ghent, Belgium
| | - Maarten Meire
- Department of Oral Health Sciences, Section of Endodontology, Ghent University, Ghent, Belgium
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Zaniboni JF, de Souza V, Escalante-Otárola WG, Porto TS, Godoy EF, Kuga MC. Impact of cleansing protocols to remove endodontic sealer residues on the adhesive interface: Bonding with universal adhesive systems. J ESTHET RESTOR DENT 2022; 34:1077-1084. [PMID: 35567506 DOI: 10.1111/jerd.12924] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2022] [Revised: 04/25/2022] [Accepted: 04/27/2022] [Indexed: 11/29/2022]
Abstract
OBJECTIVE The aim of this study was to evaluate the effectiveness of cleansing protocols to remove sealer residues using different cleaning strategies and the effect of bond strength of two universal adhesives to dentin impregnated with epoxy resin-based sealer. MATERIALS AND METHODS Fifty bovine dentin specimens were impregnated with epoxy resin-based sealer containing calcium hydroxide (Sealer Plus) and submitted to cleansing protocols (n = 10): negative control (NC), positive control (PC), 95% ethanol (ET), xylol (XI), and amyl acetate (AA). Specimens were evaluated by scanning electron microscope (SEM). Other 100 specimens were submitted to the same protocols (n = 20). Each protocol was divided into subgroups (n = 10) according to the universal adhesive system used: Scotchbond Universal (SU); Ambar Universal (AU). Bond strength was evaluated by micro-shear bond test (μSBT). Persistence of residues data were assessed with Kruskal-Wallis and Dunn's tests. μSBT data were analyzed with two-way ANOVA (α = 5%). RESULTS ET presented higher persistence of residues compared to AA and XI (p < 0.05). AA and XI were similar from each other (p > 0.05). AU and SU presented similar μSBT values, regardless of the cleansing solution (p > 0.05). SU-NC presented the highest μSBT among all conditions (p < 0.05). CONCLUSION The bond strength of universal adhesives was not affected by different amounts of sealer residues after different cleaning protocols. CLINICAL SIGNIFICANCE Non-polar substances such as amyl acetate and xylol are effective for removing residues from epoxy resin-based endodontic sealers.
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Affiliation(s)
- Joissi Ferrari Zaniboni
- Department of Restorative Dentistry, School of Dentistry of Araraquara, São Paulo State University, Araraquara, SP, Brazil
| | - Vitor de Souza
- Department of Restorative Dentistry, School of Dentistry of Araraquara, São Paulo State University, Araraquara, SP, Brazil
| | | | - Thiago Soares Porto
- Department of Restorative Dentistry, School of Dentistry of Araraquara, São Paulo State University, Araraquara, SP, Brazil
| | - Eduardo Fernandez Godoy
- Department of Restorative Dentistry, Faculty of Dentistry, University of Chile, Santiago, Chile.,Instituto de Ciencias Biomédicas, Universidad Autónoma de Chile, Providencia, Chile
| | - Milton Carlos Kuga
- Department of Restorative Dentistry, School of Dentistry of Araraquara, São Paulo State University, Araraquara, SP, Brazil
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Gelio MB, Ramos ATPR, Zaniboni JF, Escalante-Otárola WG, Besegato JF, Kuga MC. Effect of irrigation protocols on chemical smear layer formation over the post-space dentin. Microsc Res Tech 2022; 85:3005-3013. [PMID: 35535716 DOI: 10.1002/jemt.24149] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2022] [Revised: 04/10/2022] [Accepted: 05/01/2022] [Indexed: 11/12/2022]
Abstract
This study evaluated the effect of irrigation protocols using 95% ethanol (ET) or 1% peracetic acid (PA) prior the use of 2% chlorhexidine (CHX) compared to distilled water (DW) on the chemical smear layer (CSL) formation and incidence of open dentin tubules at the apical, medium, and cervical third of the post-space dentin. Scanning electron microscopy (SEM) and electron dispersive spectroscopy (EDS) images were used. Forty bovine roots were endodontically treated. After, post-space preparation was performed and the roots were randomized in four groups (n = 10) according to the irrigation protocol: DW, CHX, CHX-ET and CHX-PA. The chemical composition of CSL and the incidence of open dentin tubules at the post-space thirds were evaluated by EDS (500× magnification) and SEM (2000× magnification) images, respectively. Data from chemical composition of CSL were descriptively analyzed, while the incidence of open dentin tubules was evaluated by scores and submitted to Kruskal-Wallis and Dunn test (p = .05). Cl, Bi, and Si were the chemical elements most found over the dentin after the irrigation with CHX and CHX-ET. Moreover, CHX and CHX-ET showed the highest incidence of CSL (p < .05), but without difference between them (p > .05), regardless of the post-space third. DW and CHX-PA showed similar incidence of CSL (p > .05). No difference on the incidence of open dentin tubules was found for any irrigation protocol and post-space third (p > .05). The use of 1% PA prior the post-space irrigation with CHX decrease the incidence of CSL. RESEARCH HIGHLIGHTS: The post-space irrigation with chlorhexidine results in the formation of chemical smear layer. Ethanol is not capable to remove the chemical smear layer. Peracetic acid is more effective to remove the chemical smear layer.
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Affiliation(s)
- Mariana Bena Gelio
- Department of Restorative Dentistry, School of Dentistry, São Paulo State University, Araraquara, São Paulo, Brazil
| | | | - Joissi Ferrari Zaniboni
- Department of Restorative Dentistry, School of Dentistry, São Paulo State University, Araraquara, São Paulo, Brazil
| | | | - João Felipe Besegato
- Department of Restorative Dentistry, School of Dentistry, São Paulo State University, Araraquara, São Paulo, Brazil
| | - Milton Carlos Kuga
- Department of Restorative Dentistry, School of Dentistry, São Paulo State University, Araraquara, São Paulo, Brazil
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Manzoli TM, Zaniboni JF, Besegato JF, Guiotti FA, Dantas AAR, Kuga MC. Bonding effects of cleaning protocols and time-point of acid etching on dentin impregnated with endodontic sealer. Restor Dent Endod 2022; 47:e21. [PMID: 35692228 PMCID: PMC9160758 DOI: 10.5395/rde.2022.47.e21] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2021] [Revised: 10/07/2021] [Accepted: 10/21/2021] [Indexed: 11/11/2022] Open
Abstract
Objectives This study aimed to investigate the bonding effects of cleaning protocols on dentin impregnated with endodontic sealer residues using ethanol (E) or xylol (X). The effects of dentin acid etching immediately (I) or 7 days (P) after cleaning were also evaluated. For bonding to dentin, universal adhesive (Scotchbond Universal; 3M ESPE) was used. The persistence of sealer residues, hybrid layer formation and microshear bond strength were the performed analysis. Materials and Methods One hundred and twenty bovine dentin specimens were allocated into 4 groups (n = 10): G1 (E+I); G2 (X+I); G3 (E+P); and G4 (X+P). The persistence of sealer residues was evaluated by SEM. Confocal laser scanning microscopy images were taken to measure the formed hybrid layer using the Image J program. For microshear bond strength, 4 resin composite cylinders were placed over the dentin after the cleaning protocols. ANOVA followed by Tukey test and Kruskal-Wallis followed by Dunn test were used for parametric and non-parametric data, respectively (α = 5%). Results G2 and G4 groups showed a lower persistence of residues (p < 0.05) and thicker hybrid layer than the other groups (p < 0.05). No bond strength differences among all groups were observed (p > 0.05). Conclusions Dentin cleaning using xylol, regardless of the time-point of acid etching, provided lower persistence of residues over the surface and thicker hybrid layer. However, the bond strength of the universal adhesive system in etch-and-rinse strategy was not influenced by the cleaning protocols or time-point of acid etching.
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Affiliation(s)
- Tatiane Miranda Manzoli
- Department of Restorative Dentistry, School of Dentistry, Araraquara, São Paulo State University – UNESP, Araraquara, SP, Brazil
| | - Joissi Ferrari Zaniboni
- Department of Restorative Dentistry, School of Dentistry, Araraquara, São Paulo State University – UNESP, Araraquara, SP, Brazil
| | - João Felipe Besegato
- Department of Restorative Dentistry, School of Dentistry, Araraquara, São Paulo State University – UNESP, Araraquara, SP, Brazil
| | - Flávia Angélica Guiotti
- Department of Restorative Dentistry, School of Dentistry, Araraquara, São Paulo State University – UNESP, Araraquara, SP, Brazil
| | - Andréa Abi Rached Dantas
- Department of Restorative Dentistry, School of Dentistry, Araraquara, São Paulo State University – UNESP, Araraquara, SP, Brazil
| | - Milton Carlos Kuga
- Department of Restorative Dentistry, School of Dentistry, Araraquara, São Paulo State University – UNESP, Araraquara, SP, Brazil
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9
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Bek Kurklu ZG, Yoldas HO. The efficacy of different sealer removal protocols on the microtensile bond strength of adhesives to a bioceramic sealer-contaminated dentin. Niger J Clin Pract 2022; 25:336-341. [PMID: 35295057 DOI: 10.4103/njcp.njcp_1575_21] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
Background The optimal bonding of adhesives to dentin requires the sealer to be completely removed from the dentinal walls. Aim This study compared the efficacy of different sealer removal protocols on the microtensile bond strengths (MTBS) of single-step adhesives to a calcium silicate-based bioceramic root canal sealer-contaminated dentin. Materials and Methods Standardized box-shaped Class I cavities were prepared in human lower third molars (N = 50). All cavities were contaminated with a bioceramic root canal sealer (Endosequence BC Sealer, Brasseler, Savannah, USA), except the control group (G1) cavities. For the experimental groups, contaminated dentin surfaces were wiped with a dry cotton pellet (G2), wiped with a cotton pellet saturated with water (G3), rinsed with the air/water spray (G4), and passively applied aqueous ultrasonic energy with an ultrasonic scaler (G5) before the restoration procedure. All the cavity surface was restored with a one-bottle universal adhesive and composite resin. All the specimens were subjected to both thermocycling (2,500 thermal cycles from 5 to 55°C, with a 30-s dwelling time and a 10-s transfer time) and mechanical loading (50 N load for 100,000 cycles). The restored specimens were sectioned into resin-dentin beams for MTBS evaluation. Additional specimens were prepared for the scanning electron microscopy (SEM) to examine the dentin-adhesive interface (n = 10). Results No significant difference was found between the mean bond strengths of the groups. In SEM examination, no residual sealer was found in any group. Conclusion Calcium silicate-based bioceramic sealer was removed from the dentin surface with all removal protocols when evaluated with MTBS after the thermal and mechanical cycle tests.
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Affiliation(s)
- Z G Bek Kurklu
- Department of Restorative Dentistry, Faculty of Dentistry, Cukurova University, Adana, Turkey
| | - H O Yoldas
- Department of Endodontics, Faculty of Dentistry, Cukurova University, Adana, Turkey
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10
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Zang HL, Ai SN, Liang YH. Microtensile bond strength to sealer-contaminated dentin after using different cleaning protocols. J Dent Sci 2022; 17:122-127. [PMID: 35028029 PMCID: PMC8739238 DOI: 10.1016/j.jds.2021.05.016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2021] [Revised: 05/27/2021] [Indexed: 12/04/2022] Open
Abstract
Background/purpose Sealer residues on dentin may affect bonding to restorative materials. This study aimed to evaluate the bond strength to sealer-contaminated dentin after using different cleaning protocols. Materials and methods Freshly extracted bovine incisors were prepared and exposed the buccal pulp chamber dentin, obtaining segments measuring 5 mm × 5 mm with a height of 3 mm. The segments were randomly distributed into 4 groups (n = 7) according to different protocols. Control group: no contamination was performed. In the three experimental groups, the segments were contaminated with epoxy resin-based sealer for 5 min, and different cleaning protocols were performed. Acetone group: acetone-saturated cotton pellets were used to wipe the sealer. Ultrasound group: ultrasonic ET-20D tip cleaning. Acetone combined with ultrasound group: cleaning with acetone-saturated cotton pellets and ultrasonic tip. All segments were bonded using a self-etch adhesive. Two samples in each group were scanned by swept-source optical coherence tomography (SS-OCT) to evaluate sealer residues. A microtensile test was performed on the remaining 5 samples, which were built up with composite resin. Results Sealer residues were observed in 3 of 14 (21.4%) sections of acetone group by SS-OCT. Compared to the control, ultrasound alone or in combination with acetone preserved the bond strength (P > .05). The ultrasound group exhibited the highest bond strength (39.38 MPa), which differed from that of the acetone group, which provided the lowest bond strength (32.88 MPa) (P < .05). Conclusion Cleaning epoxy resin-based sealer-contaminated dentin surfaces using ultrasound or combined with acetone could preserve the bond strength.
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Affiliation(s)
- Hai-Ling Zang
- Department of Cariology and Endodontology, Peking University School and Hospital of Stomatology, National Clinical Research Center for Oral Diseases, National Engineering Laboratory for Digital and Material Technology of Stomatology, Beijing Key Laboratory of Digital Stomatology, Beijing, China
| | - Sheng-Nan Ai
- State Key Laboratory of Low-Dimensional Quantum Physics, Collaborative Innovation Center of Quantum Matter, Department of Physics, Tsinghua University, Beijing, China
| | - Yu-Hong Liang
- Department of Cariology and Endodontology, Peking University School and Hospital of Stomatology, National Clinical Research Center for Oral Diseases, National Engineering Laboratory for Digital and Material Technology of Stomatology, Beijing Key Laboratory of Digital Stomatology, Beijing, China.,Department of Stomatology, Peking University International Hospital, Beijing, China
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11
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Zaniboni JF, Besegato JF, Guiotti FA, Vitória MS, Lima RO, Kuga MC. Hybrid layer formation and bond strength to dentin impregnated with endodontic sealer after cleaning protocols. J Conserv Dent 2021; 24:179-183. [PMID: 34759586 PMCID: PMC8562836 DOI: 10.4103/jcd.jcd_14_21] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2021] [Revised: 02/18/2021] [Accepted: 05/23/2021] [Indexed: 11/10/2022] Open
Abstract
Aims: This study evaluated the hybrid layer formation and bond strength of two adhesive systems, Scotchbond Universal (U) or Adper Scotchbond Multi Purpose (M), after cleaning protocols using ethanol (E) or xylol (X), to dentin impregnated with an epoxy-resin based endodontic sealer. Settings and Design: The study design was an Experimental in vitro study. Methodology: One hundred bovine dentin specimens were randomly allocated into five groups (n = 10): Computed tomography (CT) (control): Only acid etching + M; E+U; X+U; E+M. After the specimen preparation, images were obtained using confocal laser scanning microscopy to evaluate the hybrid layer formation. For microshear bond strength test, the dentin specimens were included in polyvinyl chloride tubes and four resin composite cylinders were placed on the surface. The analysis was performed 24 h after storage. Statistical Analysis Used: For parametric and nonparametric data, analysis of variance followed by Tukey test and Kruskal–Wallis, followed by Dunn test were, respectively, used at a significance level of 5%. Results: Regarding hybrid layer formation, all experimental groups were similar to each other (P > 0.05). However, CT showed higher hybrid layer formation than other groups (P < 0.05), except in relation to X+M (P > 0.05). Bond strength was statistically similar among all groups (P > 0.05). Conclusions: Hybrid layer formation in dentin impregnated with epoxy resin-based sealer and submitted to different cleaning protocols was similar to the control group only for X+M. No differences were found among the experimental groups. Regarding the bond strength, no effect was observed for any group.
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Affiliation(s)
- Joissi Ferrari Zaniboni
- Department of Restorative Dentistry, School of Dentistry, Araraquara, São Paulo State University - UNESP, Araraquara, São Paulo, Brazil
| | - João Felipe Besegato
- Department of Restorative Dentistry, School of Dentistry, Araraquara, São Paulo State University - UNESP, Araraquara, São Paulo, Brazil
| | - Flávia Angelica Guiotti
- Department of Restorative Dentistry, School of Dentistry, Araraquara, São Paulo State University - UNESP, Araraquara, São Paulo, Brazil
| | - Matheus Sousa Vitória
- Department of Restorative Dentistry, School of Dentistry, Araraquara, São Paulo State University - UNESP, Araraquara, São Paulo, Brazil
| | - Reinaldo Oliveira Lima
- Department of Restorative Dentistry, School of Dentistry, Araraquara, São Paulo State University - UNESP, Araraquara, São Paulo, Brazil
| | - Milton Carlos Kuga
- Department of Restorative Dentistry, School of Dentistry, Araraquara, São Paulo State University - UNESP, Araraquara, São Paulo, Brazil
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12
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Tian F, Jett K, Flaugher R, Arora S, Bergeron B, Shen Y, Tay F. Effects of dentine surface cleaning on bonding of a self-etch adhesive to root canal sealer-contaminated dentine. J Dent 2021; 112:103766. [PMID: 34363888 DOI: 10.1016/j.jdent.2021.103766] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2021] [Revised: 07/27/2021] [Accepted: 07/30/2021] [Indexed: 10/20/2022] Open
Abstract
OBJECTIVES To compare the effectiveness of different sealer cleaning methods on bonding of a self-etch adhesive to root canal sealer-contaminated dentine. METHODS Forty-nine extracted molars were divided into seven groups. Dentine surfaces were exposed and cotaminated with a thin layer of epoxy resin-based sealer (AH Plus (AHP)) or zinc oxide eugenol-based sealer (Pulp Canal Sealer (PCS)). Three cleaning protocols were examined: dry cotton pellet, 70% ethanol-saturated cotton pellet or a surfactant-based cleaner (KatanaTM Cleaner (KC), Kuraray Noritake Dental Inc.). Uncontaminated dentine served as control. The dentine surfaces were bonded with a two-step self-etch adhesive and restored with resin composite. Bond strength testing was performed using a microtensile approach. Two teeth from each group were used for scanning electron microscopy (SEM) and energy-dispersive X-ray analysis (EDX). The pulpal floor of the teeth was covered with sealer and cleaned. The percentage of zinc/zirconium on the dentine surface was detected to indicate the amount of remnant sealer. RESULTS Tensile bond strength for uncontaminated dentine control was 46.4±7.3 MPa; bond strength decreased significantly for the dry cotton group (29.6±4.2 MPa for AHP, 24.7±4.7 MPa for PCS, p<0.05). Both ethanol and KC restored bonding performance after cleaning, with no significant difference from the control. Significantly lower MTBS was observed for the ZOE/ethanol subgroup (38.9±5.1 MPa). Cleaner surfaces and less zinc/zirconium elements were identified by SEM/EDX after cleaning with ethanol or KC. CONCLUSIONS KatanaTM Cleaner decontaminates root canal sealer-smeared dentine surfaces effectively and restores the bonding performance of a self-etch adhesive to dentine. CLINICAL SIGNIFICANCE The surfactant-based KatanaTM Cleaner, originally designed for cleaning zirconia surfaces prior to adhesive bonding, may be used as for cleaning dentine that has been contaminated with unset root canal sealers after root canal treatment to restore the bonding strength of a self-etch adhesive to sealer-contaminated dentine.
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Affiliation(s)
- Fucong Tian
- Department of Endodontics, The Dental College of Georgia, Augusta University, Augusta, GA, USA
| | - Kevin Jett
- Department of Endodontics, The Dental College of Georgia, Augusta University, Augusta, GA, USA
| | - Rebecca Flaugher
- Predoctoral student, The Dental College of Georgia, Augusta University, Augusta, GA, USA
| | - Snigdha Arora
- Predoctoral student, The Dental College of Georgia, Augusta University, Augusta, GA, USA
| | - Brian Bergeron
- Department of Endodontics, The Dental College of Georgia, Augusta University, Augusta, GA, USA
| | - Ya Shen
- UBC Faculty of Dentistry, 2199 Wesbrook Mall, Vancouver, BC V6T 1Z3, Canada.
| | - Franklin Tay
- Department of Endodontics, The Dental College of Georgia, Augusta University, Augusta, GA, USA.
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13
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The efficacy of different cleaning protocols for the sealer-contaminated access cavity. Clin Oral Investig 2020; 24:4101-4107. [DOI: 10.1007/s00784-020-03283-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2019] [Accepted: 04/08/2020] [Indexed: 10/24/2022]
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14
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Peters OA, Teo MR, Ooi JM, Foo AS, Teoh Y, Moule AJ. The effect of different sealer removal protocols on the bond strength of AH plus‐contaminated dentine to a bulk‐fill composite. AUST ENDOD J 2019; 46:5-10. [DOI: 10.1111/aej.12383] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/22/2019] [Indexed: 11/27/2022]
Affiliation(s)
- Ove A. Peters
- School of Dentistry UQ Oral Health Centre The University of Queensland Brisbane Queensland Australia
- Department of Endodontics Arthur A. Dugoni School of Dentistry University of the Pacific San Francisco California USA
| | - Mark R.X. Teo
- School of Dentistry UQ Oral Health Centre The University of Queensland Brisbane Queensland Australia
| | - Justin M. Ooi
- School of Dentistry UQ Oral Health Centre The University of Queensland Brisbane Queensland Australia
| | - Ashley S.W. Foo
- School of Dentistry UQ Oral Health Centre The University of Queensland Brisbane Queensland Australia
| | - Yu‐Yao Teoh
- School of Dentistry UQ Oral Health Centre The University of Queensland Brisbane Queensland Australia
| | - Alex J. Moule
- School of Dentistry UQ Oral Health Centre The University of Queensland Brisbane Queensland Australia
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15
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Soares AP, Bitter K, Lagrange A, Rack A, Shemesh H, Zaslansky P. Gaps at the interface between dentine and self‐adhesive resin cement in post‐endodontic restorations quantified in 3D by phase contrast‐enhanced micro‐CT. Int Endod J 2019; 53:392-402. [DOI: 10.1111/iej.13232] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2019] [Accepted: 10/01/2019] [Indexed: 11/26/2022]
Affiliation(s)
- A. P. Soares
- Department of Operative and Preventive Dentistry Charité ‐ Universitätsmedizin Berlin CharitéCentrum 3 Berlin Germany
| | - K. Bitter
- Department of Operative and Preventive Dentistry Charité ‐ Universitätsmedizin Berlin CharitéCentrum 3 Berlin Germany
| | - A. Lagrange
- Department of Operative and Preventive Dentistry Charité ‐ Universitätsmedizin Berlin CharitéCentrum 3 Berlin Germany
| | - A. Rack
- ESRF-The European Synch Grenoble France
| | - H. Shemesh
- Department of Endodontology Academic Centre for Dentistry Amsterdam Amsterdam The Netherlands
| | - P. Zaslansky
- Department of Operative and Preventive Dentistry Charité ‐ Universitätsmedizin Berlin CharitéCentrum 3 Berlin Germany
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16
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Khim TP, Sanggar V, Shan TW, Peng KC, Western JS, Dicksit DD. Prevention of coronal discoloration induced by root canal sealer remnants using Dentin Bonding agent: An in vitro study. J Conserv Dent 2018; 21:562-568. [PMID: 30294122 PMCID: PMC6161518 DOI: 10.4103/jcd.jcd_115_18] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
Introduction Among the various causes of tooth discoloration after root canal treatment, percolation of sealer remnants into the dentinal tubules of the pulp chamber is the most common cause. Objectives The aim of this study is to evaluate the efficacy of dentin bonding agent (DBA) in preventing coronal discoloration caused by four different root canal sealers- MTA Fillapex, Sealapex, Zical and Z. O. B seal at different time intervals by measuring chromatic alterations using digital images analysis method. Methodology Ninety mandibular premolars were collected and sectioned at 1 mm below the cementoenamel junction. Standard access cavity preparations of dimensions (depth-3 mm, width-0.8 mm, and length-3 mm) were prepared with a No. 245 bur through the cervical access. Following the standard irrigation protocol, specimens were then randomly divided into nine groups (four groups without DBA [1-4] +4 groups with DBA [5-8] +1 negative control [9]). In Groups 1-4, four different root canal sealers (MTA Fillapex, Sealapex, Zical, and Z.O.B seal) were applied to the walls of the pulp chamber. For Groups 5-8, the samples were etched with 37% phosphoric acid and DBA application was done before the respective root canal sealer application. The cervical access in all specimens was sealed using glass ionomer cement. Digital photographs were taken under standard lighting and environmental conditions at different time intervals: preprocedural, postprocedural, and after 1, 2, 3, and 4 months. These images were analyzed using Adobe Photoshop CS6 from which laboratory values and subsequently Delta E values were obtained. Results Statistical analysis performed using repeated measures ANOVA and post hoc Tukey's tests show that the groups with DBA application had significantly lower mean Delta E values (P < 0.05) compared to the groups without DBA application. Conclusion DBAs applied to the dentinal walls of the pulp chamber before obturation can effectively reduce the sealer-induced coronal discoloration.
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Affiliation(s)
- Tan Peik Khim
- Faculty of Dentistry, SEGi University, Selangor, Malaysia
| | | | - Tey Wei Shan
- Faculty of Dentistry, SEGi University, Selangor, Malaysia
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17
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Oliveira E, Cecchin D, Miyagaki DC, Moura ALC, Disarz A, Souza MA, Farina AP. Effect of different protocols of eugenol removal on the bond strength between the fibre post and root dentin. AUST ENDOD J 2018; 45:177-183. [DOI: 10.1111/aej.12304] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/13/2018] [Indexed: 11/28/2022]
Affiliation(s)
- Emanuele Oliveira
- Department of Restorative Dentistry University of Passo Fundo Passo Fundo Brazil
| | - Doglas Cecchin
- Department of Restorative Dentistry University of Passo Fundo Passo Fundo Brazil
| | - Daniela C. Miyagaki
- Department of Restorative Dentistry University of Passo Fundo Passo Fundo Brazil
| | - Ana L. C. Moura
- Department of Restorative Dentistry University of Passo Fundo Passo Fundo Brazil
| | - Alana Disarz
- Department of Restorative Dentistry University of Passo Fundo Passo Fundo Brazil
| | - Matheus A. Souza
- Department of Restorative Dentistry University of Passo Fundo Passo Fundo Brazil
| | - Ana P. Farina
- Department of Restorative Dentistry University of Passo Fundo Passo Fundo Brazil
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18
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Morais JMP, Victorino KR, Escalante-Otárola WG, Jordão-Basso KCF, Palma-Dibb RG, Kuga MC. Effect of the calcium silicate-based sealer removal protocols and time-point of acid etching on the dentin adhesive interface. Microsc Res Tech 2018; 81:914-920. [DOI: 10.1002/jemt.23056] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2018] [Revised: 04/23/2018] [Accepted: 05/01/2018] [Indexed: 11/11/2022]
Affiliation(s)
| | - Keli Regina Victorino
- Department of Restorative Dentistry; Araraquara Dental School, Univ Estadual Paulista (UNESP); Araraquara Brazil
| | | | | | - Regina Guenka Palma-Dibb
- Department of Restorative Dentistry; Ribeirão Preto Dental School, São Paulo University (USP); Ribeirão Preto Brazil
| | - Milton Carlos Kuga
- Department of Restorative Dentistry; Araraquara Dental School, Univ Estadual Paulista (UNESP); Araraquara Brazil
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Gonçalves Galoza MO, Fagundes Jordão-Basso KC, Escalante-Otárola WG, Victorino KR, Rached Dantas AA, Kuga MC. Effect of cleaning protocols on bond strength of etch-and-rinse adhesive system to dentin. J Conserv Dent 2018; 21:602-606. [PMID: 30546203 PMCID: PMC6249950 DOI: 10.4103/jcd.jcd_112_18] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Aim This study aimed to evaluate the cleaning protocol of dentin impregnated with epoxy resin-based sealer (AH Plus) and the effects on the adhesive interface using 95% ethanol (E) or formamide solution (F) associated with microabrasion with glass microparticles (M). Methodology Forty dentin specimens were impregnated with sealer (AH Plus). Specimens were cleansed according to the following protocols (n = 10): G1 (E); G2 (F); G3 (E = M); and G4 (F = M). No treatment was performed in G5 (control). Specimens were subjected to standard error of the mean to evaluate the residues persistence (×500) and open dentinal tubules counting (×2000). Another fifty specimens were subjected to similar procedures and cleaning protocols. Seven days later, composite-resin-made specimens were performed on dentin using etch-and-rinse adhesive system, then submitted to microshear test. Results G2 and G4 showed higher residues' persistence and lower incidence of open dentinal tubules than G1 and G3 (P < 0.05). No difference was found between G1 and G3 or G2 and G4 (P > 0.05). Adhesive system bond strength was similar in all groups (P > 0.05). Conclusions Microabrasion negatively affected the epoxy resin-based sealer residues' removal protocols' action; all groups presented residues on the dentin surface. However, 7 days later, the protocols did not affect the bond strength of adhesive system to sealer-impregnated dentin.
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Affiliation(s)
| | | | | | - Keli Regina Victorino
- Department of Restorative Dentistry, Araraquara School of Dentistry, Araraquara, São Paulo, Brazil
| | - Andrea Abi Rached Dantas
- Department of Restorative Dentistry, Araraquara School of Dentistry, Araraquara, São Paulo, Brazil
| | - Milton Carlos Kuga
- Department of Restorative Dentistry, Araraquara School of Dentistry, Araraquara, São Paulo, Brazil
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20
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Jordão-Basso KCF, Kuga MC, Bandéca MC, Duarte MAH, Guiotti FA. Effect of the time-point of acid etching on the persistence of sealer residues after using different dental cleaning protocols. Braz Oral Res 2016; 30:e133. [PMID: 28001242 DOI: 10.1590/1807-3107bor-2016.vol30.0133] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2016] [Accepted: 10/10/2016] [Indexed: 11/22/2022] Open
Abstract
Endodontic sealer residues remaining within the pulp chamber dentin after root canal obturation and cleaning with various solvents may compromise the appearance and the durability of dental restorations. Acid etching is routinely performed prior to application of dentine adhesive systems, but is effect on residual sealer material and the optimal time-point for performing etching, are unknown. Here, we evaluated the effect of acid etching on the dentin surface when performed either immediately or 7 days after removal of the endodontic sealer with two solvents, i.e., 95% ethanol or xylol. Forty crowns fragments from bovine incisors were impregnated with sealer and divided into 4 groups (n = 10 each), according to the dentin cleaning protocol and to the acid etching time-point: G1, 95.0% ethanol and immediate acid etching; G2, xylol and immediate acid etching; G3, 95.0% ethanol and acid etching after 7 days; and G4, xylol and acid etching after 7 days. Scanning electron microscopy (SEM) images (2000 ×) were obtained from each specimen and the number of open dentinal tubules counted and compared. Another 40 fragments were similarly prepared, and SEM images were obtained (500 ×) to score and compare the persistence of sealer residues on the dentin. G4 showed the most open dentinal tubules and the least epoxy resin-based sealer residues on the dentin surface (p < 0.05). The least epoxy resin-based sealer residues was obtained when acid etching, using 37% phosphoric acid, was performed after 7 days after cleaning the dentin with xylol.
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Affiliation(s)
| | - Milton Carlos Kuga
- Universidade Estadual Paulista - Unesp, Araraquara Dental School, Restorative Dentistry Department, Araraquara, SP, Brazil
| | | | - Marco Antonio Hungaro Duarte
- Universidade de São Paulo - USP, Bauru Dental School, Dental Material, Dentistry, and Endodontics Department, Bauru, SP, Brazil
| | - Flávia Angélica Guiotti
- Universidade Estadual Paulista - Unesp, Araraquara Dental School, Restorative Dentistry Department, Araraquara, SP, Brazil
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21
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de Castro FPL, Pinheiro SL, Duarte MAH, Duque JA, Fernandes SL, Anchieta RB, da Silveira Bueno CE. Effect of time and ultrasonic activation on ethylenediaminetetraacetic acid on smear layer removal of the root canal. Microsc Res Tech 2016; 79:1062-1068. [DOI: 10.1002/jemt.22746] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2016] [Revised: 07/27/2016] [Accepted: 08/02/2016] [Indexed: 11/10/2022]
Affiliation(s)
- Fábio Pereira Linhares de Castro
- Master's Degree Student in Endodontics, São Leopoldo Mandic Faculty of Dentistry; Campinas Brazil
- Faculdade de Odontologia-UNIPÓS; Centro Universitário do Norte Paulista-UNORP; São José do Rio Preto Sao Paulo Brazil
| | | | | | - Jussaro Alves Duque
- Department of Clinical Dentistry; Faculdade Morgana Potrich; Mineiros Goiás Brazil
| | | | - Rodolfo Bruniera Anchieta
- Faculdade de Odontologia-UNIPÓS; Centro Universitário do Norte Paulista-UNORP; São José do Rio Preto Sao Paulo Brazil
- UNESP - Univ Estadual Paulista, Araçatuba Dental School; Department of Restorative Dentistry; Araçatuba Brazil
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Bandeca MC, Kuga MC, Diniz AC, Jordão-Basso KC, Tonetto MR. Effects of the Residues from the Endodontic Sealers on the Longevity of Esthetic Restorations. J Contemp Dent Pract 2016; 17:615-617. [PMID: 27659075 DOI: 10.5005/jp-journals-10024-1899] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
The substances used in the root canal treatment, especially sodium hypochlorite solution and oxidant agents, can negatively interfere on the bond strength of the adhesive systems to dentin and on the dental crowns fracture resistance.(1,2).
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Affiliation(s)
- Matheus C Bandeca
- Professor, Department of Postgraduate Program in Dentistry, CEUMA University, São Luis, Maranhão, Brazil, e-mail:
| | - Milton C Kuga
- Professor, Department of Restorative Dentistry, School of Dentistry, Univ Estadual Paulista, Araraquara, São Paulo, Brazil
| | - Ana Cs Diniz
- Student, Department of Postgraduate Program in Dentistry, CEUMA University, São Luis, Maranhão, Brazil
| | - Keren Cf Jordão-Basso
- Student, Department of Postgraduate Program in Integrated Dental Science, University of Cuiabá, Mato Grosso, Brazil
| | - Mateus R Tonetto
- Professor, Department of Postgraduate Program in Integrated Dental Science, University of Cuiabá, Mato Grosso, Brazil
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Topçuoğlu HS, Demirbuga S, Pala K, Cayabatmaz M, Topçuoğlu G. The bond strength of adhesive resins to AH plus contaminated dentin cleaned by various gutta-percha solvents. SCANNING 2015; 37:138-144. [PMID: 25678408 DOI: 10.1002/sca.21190] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/30/2014] [Accepted: 01/09/2015] [Indexed: 06/04/2023]
Abstract
The optimal bonding of adhesives to dentin requires the sealer to be completely removed from dentinal walls. The aim of this study was to investigate the effect of different cleaning procedures using gutta-percha solvents on bond strength of adhesive resins to AH Plus contaminated dentin (APCD). The pulp chamber dentin surfaces were contaminated with AH Plus and cleaned with five different techniques (dry cotton, chloroform, orange oil, eucalyptol, and ethanol). Then, Clearfil SE Bond (CSE) (Kuraray), and Tetric N Bond (TNB) (Ivoclar Vivadent) were applied and filled with a composite resin. The serial sticks (1 × 1 mm) were obtained and tested for microtensile bond strength. Scanning electron microscopy (SEM) was used for analysis of debonded surfaces. Ethanol exhibited the highest bond strength to APCD followed by dry cotton. There was no statistically significant difference between ethanol and dry cotton (p > 0.05). Eucalyptol showed the lowest bond strength to APCD and statistically significant differences (p < 0.05) in comparison with other groups. APCD reduced the bond strength of all adhesive resins. Dry cotton, ethanol, and chloroform were the most suitable techniques when used with CSE together, whereas ethanol was best with TNB.
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Muller GG, Schonhofen AP, Mora PMPK, Grecca FS, So MVR, Bodanezi A. Efficacy of an Organic Solvent and Ultrasound for Filling Material Removal. Braz Dent J 2013; 24:585-90. [DOI: 10.1590/0103-6440201302252] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2013] [Accepted: 10/17/2013] [Indexed: 11/22/2022] Open
Abstract
The aim of this study was to investigate whether a final rinse with Endosolv R® solvent and ultrasound resulted in cleaner root canal walls during endodontic retreatment. A total of 56 extracted premolar teeth were manually instrumented using a step-back flare technique and filled with gutta-percha and AH Plus sealer. After 9 months, the canals were retreated by removing the gutta-percha and sealer with ProTaper Universal Retreatment and rotary preparation with ProTaper Universal System up to an F5 file. As a final step, the teeth were randomly divided in 4 groups (n=14) and were subjected to passive ultrasonic irrigation (PUI) with either Endosolv R or distilled water. In the control groups, the irrigants were left undisturbed. Roots were cleaved and examined under scanning electron microscopy (SEM), and the amount of filling remnants on the canal walls was assessed by two calibrated examiners in a blinded fashion. Data were analyzed by the Kruskal-Wallis test and the Student-Newman-Keuls post hoc test (α=0.05). All groups presented filling debris in the three root canal thirds after retreatment. There were no significant differences between the groups or among the root canal thirds within each group (p>0.05). PUI with Endosolv R was not effective in the removal of filling debris from root canal walls.
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