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Jain A, Armstrong SR, Banas JA, Qian F, Maia RR, Teixeira EC. Dental adhesive microtensile bond strength following a biofilm-based in vitro aging model. J Appl Oral Sci 2020; 28:e20190737. [PMID: 32609185 PMCID: PMC7340208 DOI: 10.1590/1678-7757-2019-0737] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2019] [Accepted: 05/11/2020] [Indexed: 11/22/2022] Open
Abstract
OBJECTIVE Laboratory tests are routinely used to test bonding properties of dental adhesives. Various aging methods that simulate the oral environment are used to complement these tests for assessment of adhesive bond durability. However, most of these methods challenge hydrolytic and mechanical stability of the adhesive- enamel/dentin interface, and not the biostability of dental adhesives. To compare resin-dentin microtensile bond strength (μTBS) after a 15-day Streptococcus mutans (SM) or Streptococcus sobrinus (SS) bacterial exposure to the 6-month water storage (WS) ISO 11405 type 3 test. METHODOLOGY A total of 31 molars were flattened and their exposed dentin was restored with Optibond-FL adhesive system and Z-100 dental composite. Each restored molar was sectioned and trimmed into four dumbbell-shaped specimens, and randomly distributed based on the following aging conditions: A) 6 months of WS (n=31), B) 5.5 months of WS + 15 days of a SM-biofilm challenge (n=31), C) 15 days of a SM-biofilm challenge (n=31) and D) 15 days of a SS-biofilm challenge (n=31). μTBS were determined and the failure modes were classified using light microscopy. RESULTS Statistical analyses showed that each type of aging condition affected μTBS (p<0.0001). For Group A (49.7±15.5MPa), the mean μTBS was significantly greater than in Groups B (19.3±6.3MPa), C (19.9±5.9MPa) and D (23.6±7.9MPa). For Group D, the mean μTBS was also significantly greater than for Groups B and C, but no difference was observed between Groups B and C. CONCLUSION A Streptococcus mutans- or Streptococcus sobrinus-based biofilm challenge for 15 days resulted in a significantly lower μTBS than did the ISO 11405 recommended 6 months of water storage. This type of biofilm-based aging model seems to be a practical method for testing biostability of resin-dentin bonding.
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Affiliation(s)
- Aditi Jain
- University of Iowa, Department of Operative Dentistry, Iowa City, IA, USA
| | - Steve R Armstrong
- University of Iowa, Department of Operative Dentistry, Iowa City, IA, USA
| | - Jeffrey A Banas
- University of Iowa, Iowa Institute for Oral Health Research, Iowa City, IA, USA
| | - Fang Qian
- University of Iowa, Iowa Institute for Oral Health Research, Iowa City, IA, USA
| | - Rodrigo R Maia
- University of Iowa, Department of Operative Dentistry, Iowa City, IA, USA
| | - Erica C Teixeira
- University of Iowa, Department of Operative Dentistry, Iowa City, IA, USA
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Nascimento PLDMM, Meereis CTW, Maske TT, Ogliari FA, Cenci MS, Pfeifer CS, Faria-E-Silva AL. Addition of ammonium-based methacrylates to an experimental dental adhesive for bonding metal brackets: Carious lesion development and bond strength after cariogenic challenge. Am J Orthod Dentofacial Orthop 2017; 151:949-956. [PMID: 28457273 DOI: 10.1016/j.ajodo.2016.10.028] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2016] [Revised: 10/01/2016] [Accepted: 10/01/2016] [Indexed: 10/19/2022]
Abstract
INTRODUCTION In this study, we evaluated the caries inhibition and shear bond strength achieved with the addition of the antibacterial monomer [2-(Methacryloyloxy)ethyl] trimethylammonium chloride (MADQUAT) to an adhesive used to bond orthodontic brackets. METHODS Experimental adhesives were formulated with addition of 0% (control), 5%, or 10% MADQUAT followed by measurement of the degree of conversion. These adhesives were used to lute brackets to the enamel of premolars (n = 30). Biofilm from a microcosm model was cultivated in half of the specimens under cariogenic challenge for 5 days. The brackets were subjected to a shear bond strength test followed by measurement of the internal hardness of the enamel around the brackets to calculate the integrated mineral loss. RESULTS The addition of MADQUAT slightly increased the degree of conversion. Adhesive containing 10% MADQUAT significantly reduced the integrated mineral loss around the bracket but also resulted in the lowest values of bond strength. No effects on bond strength and integrated mineral loss were observed with the addition of 5% MADQUAT to the adhesive. The cariogenic challenge did not affect the bond strength and the failure mode. CONCLUSIONS MADQUAT was effective to reduce the integrated mineral loss only when added to the adhesive at a concentration of 10% despite the reduction of bond strength.
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Affiliation(s)
| | | | - Tamires Timm Maske
- Graduate Program in Dentistry, Federal University of Pelotas, Pelotas, Rio Grande do Sul, Brazil
| | - Fabrício Aulo Ogliari
- Graduate Program in Dentistry, Federal University of Pelotas, Pelotas, Rio Grande do Sul, Brazil
| | - Maximiliano Sérgio Cenci
- Graduate Program in Dentistry, Federal University of Pelotas, Pelotas, Rio Grande do Sul, Brazil
| | - Carmem Sílvia Pfeifer
- Department of Restorative Dentistry, Oregon Health & Science University, Portland, Ore
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Montagner AF, Maske TT, Opdam NJ, de Soet JJ, Cenci MS, Huysmans MC. Failed bonded interfaces submitted to microcosm biofilm caries development. J Dent 2016; 52:63-9. [PMID: 27443239 DOI: 10.1016/j.jdent.2016.07.007] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2015] [Revised: 06/30/2016] [Accepted: 07/16/2016] [Indexed: 11/28/2022] Open
Abstract
OBJECTIVES This study aimed to evaluate the dentin wall carious lesion development of different composite-dentin interfaces in the presence of two adhesive bonding materials in the gaps, using a microcosm biofilm model. METHODS Dentin samples were prepared (10.4mm(2)) and restored with a composite resin using two adhesive systems (etch-and-rinse and self-etch techniques). Different conditions with respect to composite-dentin interfaces were produced with a 200μm gap: failed bonded without ageing or after mechanical ageing, or non-bonded with or without the presence of adhesive material on the dentin wall. For cariogenic challenge, specimens were subjected to a biofilm microcosm model for 14days to create caries-like wall lesions. Before and after caries development, transverse wavelength-independent microradiography images were taken, and lesion depth and mineral loss were measured. Data were analysed with linear regression models (p<0.05). RESULTS The composite-dentin interface conditions significant influenced the caries development: lesion development was reduced by the presence of the adhesive material on dentin wall, while lesion development was increased by the mechanical ageing (p=0.019). There was no difference between the adhesive materials (p values>0.05). CONCLUSION Different composite-dentin interfaces influence wall lesion development in gaps, with the interfaces submitted to ageing showing less carious protection than those interfaces with the presence of adhesive covering the dentin. CLINICAL SIGNIFICANCE The presence of adhesive bonding material in the gaps plays a role on the wall caries lesion development.
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Affiliation(s)
- Anelise F Montagner
- Graduate Program in Dentistry, School of Dentistry, Federal University of Pelotas, Pelotas, RS, Brazil; Radboud University Medical Center, Radboud Institute for Health Sciences, Department of Dentistry, Nijmegen, The Netherlands.
| | - Tamires T Maske
- Graduate Program in Dentistry, School of Dentistry, Federal University of Pelotas, Pelotas, RS, Brazil.
| | - Niek J Opdam
- Radboud University Medical Center, Radboud Institute for Health Sciences, Department of Dentistry, Nijmegen, The Netherlands.
| | - Johannes J de Soet
- Department of Preventive Dentistry, Academic Centre for Dentistry Amsterdam (ACTA), University of Amsterdam and VU University, Amsterdam, The Netherlands.
| | - Maximiliano S Cenci
- Graduate Program in Dentistry, School of Dentistry, Federal University of Pelotas, Pelotas, RS, Brazil.
| | - Marie-Charlotte Huysmans
- Radboud University Medical Center, Radboud Institute for Health Sciences, Department of Dentistry, Nijmegen, The Netherlands.
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Montagner AF, Opdam NJM, Ruben JL, Bronkhorst EM, Cenci MS, Huysmans MCDNJM. Behavior of failed bonded interfaces under in vitro cariogenic challenge. Dent Mater 2016; 32:668-75. [PMID: 26972760 DOI: 10.1016/j.dental.2016.02.005] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2015] [Revised: 09/29/2015] [Accepted: 02/22/2016] [Indexed: 11/24/2022]
Abstract
OBJECTIVE This in vitro study aimed to compare dentin wall caries development at different composite-dentin interfaces. METHODS Dentin samples (10.4 mm(2)) were restored with composite resin using two adhesive systems (etch-and-rinse and self-etch techniques). Different composite-dentin interfaces with gaps were produced: (a) failed bonded, which were fractured at interface after being submitted to aging protocols (no aging, mechanical loading or water storage); (b) non-bonded interfaces, both without any adhesive material or with adhesive material applied only on the dentin. Adhesively fractured and non-bonded samples were subjected to a lactic acid gel (pH=5) caries model with a continuous opening/closing movement of the interfacial gap for 10 days. Transverse wavelength-independent microradiographs were taken, and lesion depth and mineral loss were measured. Data were analyzed with linear mixed-effects regression models. RESULTS Caries development differed among the composite-dentin interfaces (p<0.001). The non-bonded interface with adhesive material on the dentin showed less lesion depth than the failed bonded groups, while the non-bonded interface without adhesive on dentin showed the deepest wall lesions. Difference between the adhesive systems was observed only in the non-bonded groups (p=0.003), with the self-etch adhesive applied on the dentin showing more severe lesions. Samples broken after mechanical loading aging showed deeper lesions than those broken after water storage (p<0.001). SIGNIFICANCE Composite-dentin interfaces failed after aging presented different demineralization from interfaces that were never bonded, indicating that the restorative treatment changes the tissue in a way relevant to secondary caries development.
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Affiliation(s)
- Anelise F Montagner
- School of Dentistry, Department of Restorative Dentistry, Federal University of Pelotas, Gonçalves Chaves 457, 96015-560 Pelotas, RS, Brazil; College of Dental Sciences, Department of Preventive and Restorative Dentistry, Radboud University Medical Center, Philips van Leydenlaan 25, 6525 EX Nijmegen, The Netherlands.
| | - Niek J M Opdam
- College of Dental Sciences, Department of Preventive and Restorative Dentistry, Radboud University Medical Center, Philips van Leydenlaan 25, 6525 EX Nijmegen, The Netherlands
| | - Jan L Ruben
- College of Dental Sciences, Department of Preventive and Restorative Dentistry, Radboud University Medical Center, Philips van Leydenlaan 25, 6525 EX Nijmegen, The Netherlands
| | - Ewald M Bronkhorst
- College of Dental Sciences, Department of Preventive and Restorative Dentistry, Radboud University Medical Center, Philips van Leydenlaan 25, 6525 EX Nijmegen, The Netherlands
| | - Maximiliano S Cenci
- School of Dentistry, Department of Restorative Dentistry, Federal University of Pelotas, Gonçalves Chaves 457, 96015-560 Pelotas, RS, Brazil
| | - Marie-Charlotte D N J M Huysmans
- College of Dental Sciences, Department of Preventive and Restorative Dentistry, Radboud University Medical Center, Philips van Leydenlaan 25, 6525 EX Nijmegen, The Netherlands
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de Sousa Júnior JA, Carregosa Santana ML, de Figueiredo FED, Faria-E-Silva AL. Effects of solvent volatilization time on the bond strength of etch-and-rinse adhesive to dentin using conventional or deproteinization bonding techniques. Restor Dent Endod 2015; 40:202-8. [PMID: 26295023 PMCID: PMC4534724 DOI: 10.5395/rde.2015.40.3.202] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2014] [Accepted: 02/12/2015] [Indexed: 11/16/2022] Open
Abstract
Objectives This study determined the effect of the air-stream application time and the bonding technique on the dentin bond strength of adhesives with different solvents. Furthermore, the content and volatilization rate of the solvents contained in the adhesives were also evaluated. Materials and Methods Three adhesive systems with different solvents (Stae, SDI, acetone; XP Bond, Dentsply De Trey, butanol; Ambar, FGM, ethanol) were evaluated. The concentrations and evaporation rates of each adhesive were measured using an analytical balance. After acid-etching and rinsing, medium occlusal dentin surfaces of human molars were kept moist (conventional) or were treated with 10% sodium hypochlorite for deproteinization. After applying adhesives over the dentin, slight air-stream was applied for 10, 30 or 60 sec. Composite cylinders were built up and submitted to shear testing. The data were submitted to ANOVA and Tukey's test (α = 0.05). Results Stae showed the highest solvent content and Ambar the lowest. Acetone presented the highest evaporation rate, followed by butanol. Shear bond strengths were significantly affected only by the factors of 'adhesive' and 'bonding technique' (p < 0.05), while the factor 'duration of air-stream' was not significant. Deproteinization of dentin increased the bond strength (p < 0.05). Stae showed the lowest bond strength values (p < 0.05), while no significant difference was observed between XP Bond and Ambar. Conclusions Despite the differences in content and evaporation rate of the solvents, the duration of air-stream application did not affect the bond strength to dentin irrespective of the bonding technique.
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Montagner AF, Kuper NK, Opdam NJM, Bronkhorst EM, Cenci MS, Huysmans MCDNJM. Wall-lesion development in gaps: The role of the adhesive bonding material. J Dent 2015; 43:1007-12. [PMID: 25917166 DOI: 10.1016/j.jdent.2015.04.007] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2014] [Revised: 03/28/2015] [Accepted: 04/14/2015] [Indexed: 11/17/2022] Open
Abstract
OBJECTIVES This study evaluated the caries wall lesion development in different composite-dentin interfaces to investigate if the presence and location of two bonding materials in the gaps influence wall caries lesion development. METHODS Fourteen volunteers wore a modified occlusal splint containing samples with four different interfaces: perfect bonding/no gap, or with a fixed gap (234±30 μm) with either no bonding material, bonding material (Clearfil Protect Bond-PB and Clearfil SE Bond-SE) on dentin or on composite. Eight times a day, the samples were dipped in 20% sucrose solution for 10 min, during 3 weeks. The samples were imaged with microradiography (T-WIM), and lesion depth (LD) and mineral loss (ML) were measured. The data were analysed with paired t-test. RESULTS The perfect bonding group did not show any caries wall lesion development, whereas all other interfaces did. The interface with bonding on dentin did not show significantly different wall lesion development from the interface with no material. However, when bonding was present on composite, both LD and ML were significantly higher than both other gap conditions (p-values<0.05). A difference between the bonding material was only seen when applied on composite: PB showed less ML than SE (p=0.01). CONCLUSIONS The presence of bonding on the composite side of a composite-dentin gap increased wall lesion development in situ. CLINICAL SIGNIFICANCE The presence and location of an adhesive bonding material in the composite-dentin gaps plays a role on the wall caries lesion development.
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Affiliation(s)
- Anelise F Montagner
- School of Dentistry, Federal University of Pelotas, Department of Restorative Dentistry, Pelotas, Brazil; Radboud University Medical Center, Radboud Institute for Health Sciences, Department of Dentistry, Nijmegen, The Netherlands.
| | - Nicolien K Kuper
- Radboud University Medical Center, Radboud Institute for Health Sciences, Department of Dentistry, Nijmegen, The Netherlands.
| | - Niek J M Opdam
- Radboud University Medical Center, Radboud Institute for Health Sciences, Department of Dentistry, Nijmegen, The Netherlands.
| | - Ewald M Bronkhorst
- Radboud University Medical Center, Radboud Institute for Health Sciences, Department of Dentistry, Nijmegen, The Netherlands.
| | - Maximiliano S Cenci
- School of Dentistry, Federal University of Pelotas, Department of Restorative Dentistry, Pelotas, Brazil.
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Montagner AF, Pereira-Cenci T, Cenci MS. Influence of cariogenic challenge on bond strength stability of dentin. Braz Dent J 2015; 26:128-34. [PMID: 25831102 DOI: 10.1590/0103-6440201300348] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2014] [Accepted: 12/17/2014] [Indexed: 11/22/2022] Open
Abstract
The aim of this study was to evaluate the effect of cariogenic challenge on the microtensile bond strength values (μTBS) of dentin pre-treated with chlorhexidine digluconate (CHX) or sodium hypochlorite (NaOCl). Thirty-six sound molars were selected and randomly assigned to 3 dentin pre-treatments (distilled water - control, 2% CHX and 10% NaOCl) and 4 aging protocols (24h control, biofilm without cariogenic challenge, biofilm with cariogenic challenge, and 18-month water storage). The same etch-and-rinse adhesive system and composite resin were used for all groups (n=30 beams). For the biofilm groups, dental microcosm biofilms originated from saliva of a healthy donor were grown on the samples with a defined medium enriched with mucin, with or without 10% sucrose, according to the group. After the experimental period, the microtensile test was performed. Data were analyzed with ANOVA followed by Tukey test (p<0.05). The pre-treatment did not influence μTBS for all aging conditions (p=0.188), but the type of aging affected the bond strength (p<0.001). Cariogenic challenge and water storage aging affected the bond stability resulting in a decrease of the μTBS, but the pre-treatments did not influence the μTBS.
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Affiliation(s)
- Anelise Fernandes Montagner
- Department of Restorative Dentistry, Graduate Program in Dentistry, UFPel - Federal University of Pelotas, Pelotas, RS, Brazil
| | - Tatiana Pereira-Cenci
- Graduate Program in Dentistry, UFPel - Federal University of Pelotas, Pelotas, RS, Brazil
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Santana MLC, Sousa Júnior JAD, Leal PC, Faria-e-Silva AL. Does maintaining a bottle of adhesive without the lid significantly reduce the solvent content? Braz Dent J 2015; 25:543-5. [PMID: 25590203 DOI: 10.1590/0103-6440201300330] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2014] [Accepted: 11/10/2014] [Indexed: 11/21/2022] Open
Abstract
This study aimed to evaluate the effect of maintaining a bottle of adhesive without its lid on the solvent loss of the etch-and-rinse adhesive systems. Three 2-step etch-and-rinse adhesives with different solvents (acetone, ethanol or butanol) were used in this study. Drops of each adhesive were placed on an analytical balance and the adhesive mass was recorded until equilibrium was achieved (no significant mass alteration within time). The solvent content of each adhesive and evaporation rate of solvents were measured (n=3). Two bottles of each adhesive were weighted. The bottles were maintained without their lids for 8 h in a stove at 37 ºC, after which the mass loss was measured. Based on mass alteration of drops, acetone-based adhesive showed the highest solvent content (46.5%, CI 95%: 35.8-54.7) and evaporation rate (1.11 %/s, CI95%: 0.63-1.60), whereas ethanol-based adhesive had the lowest values (10.1%, CI95%: 4.3-16.0; 0.03 %/s CI95%: 0.01-0.05). However, none of the adhesives bottles exhibited significant mass loss after sitting for 8 h without their lids (% from initial content; acetone - 96.5, CI 95%: 91.8-101.5; ethanol - 99.4, CI 95%: 98.4-100.4; and butanol - 99.3, CI 95%: 98.1-100.5). In conclusion, maintaining the adhesive bottle without lid did not induce significant solvent loss, irrespective the concentration and evaporation rate of solvent.
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Affiliation(s)
| | | | - Pollyana Caldeira Leal
- Department of Physiology, UFS - Federal University of Sergipe, São Cristóvão, SE, Brazil
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