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Zabeu GS, Giacomini MC, Scaffa PMC, Tjäderhane L, Mosquim V, Wang L. Solvation role of dimethyl sulfoxide on the interaction with dentin bonding systems after 30 months. Dent Mater 2023; 39:478-484. [PMID: 36934035 DOI: 10.1016/j.dental.2023.03.010] [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: 11/25/2022] [Revised: 02/07/2023] [Accepted: 03/03/2023] [Indexed: 03/18/2023]
Abstract
OBJECTIVES To determine whether DMSO could serve as an effective pretreatment to improve the mechanical properties and minimize the degradation of the adhesive interface, through the degree of conversion (DC) and bond strength to dentin of different categories of dentin bonding systems (DBSs) after 30 months. METHODS DMSO (0, 0.5, 1, 2, 5, 10 vol%) were incorporated into four categories of DBSs: Adper Scotchbond Multipurpose (MP), Adper Single Bond 2 (SB), Clearfil SE Bond (CSE) and Adper Scotchbond Universal (SU). DC was evaluated by Fourier transform infrared spectroscopy (FTIR). For microtensile bond strength test (µTBS), 1 % DMSO were applied on dentin as pretreatment before DBSs. For SU, both strategies were tested. Specimens for µTBS were tested after 24 h, 6 and 30 months. DC and µTBS data were subjected to two-way ANOVA and Tukey test (α < 0.05). RESULTS Incorporating 5 %/10 % DMSO increased the DC of CSE. Controversially, when combined with SU, 2 % and 10 % DMSO jeopardized the DC. Regarding µTBS, 1 % DMSO pre-treatment increased the bond strength for MP, SB, SU-ER and SU-SE. After 30 months, MP, SU-ER and SU-SE showed a decrease compared to baseline but remained higher than the control. CLINICAL SIGNIFICANCE DMSO pretreatment may be a useful strategy to improve the bond interface over time. Its incorporation seems to favor the non-solvated systems regarding DC while it seems to show long-term benefits for bond strength using 1 % DMSO for MP and SU systems.
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Affiliation(s)
- Giovanna Speranza Zabeu
- Department of Operative Dentistry, Endodontics and Dental Materials, Bauru School of Dentistry, University of São Paulo, Alameda Octávio Pinheiro Brisolla, 9-75, zip code 17012-901 Bauru, SP, Brazil; School of Dentistry, Centro Universitário Sagrado Coração - UNISAGRADO, Rua Irmã Arminda, 10-50, Jardim Brasil, zip code 17011-160 Bauru, SP, Brazil
| | - Marina Ciccone Giacomini
- Department of Operative Dentistry, Endodontics and Dental Materials, Bauru School of Dentistry, University of São Paulo, Alameda Octávio Pinheiro Brisolla, 9-75, zip code 17012-901 Bauru, SP, Brazil; University Centre Integrated Faculties of Ourinhos, Rodovia BR-153, Km 338 S/N Água do Cateto, zip code 19909-100 Ourinhos, SP, Brazil
| | - Polliana Mendes Candia Scaffa
- Division of Biomaterials and Biomechanics, Department of Restorative Dentistry, Oregon Health & Science University, OHSU, 2730 SW Moody Ave, zip code 97201 Portland, OR, USA
| | - Leo Tjäderhane
- Department of Oral and Maxillofacial Diseases, University of Helsinki, Helsinki, Finland; Helsinki University Hospital, Helsinki, zip code 90220, Oulu, Finland; Research Unit of Oral Health Sciences and Medical Research Center Oulu (MRC Oulu), Oulu University Hospital, Kajaanintie 50, zip code 90220 Oulu, Finland
| | - Victor Mosquim
- Department of Operative Dentistry, Endodontics and Dental Materials, Bauru School of Dentistry, University of São Paulo, Alameda Octávio Pinheiro Brisolla, 9-75, zip code 17012-901 Bauru, SP, Brazil
| | - Linda Wang
- Department of Operative Dentistry, Endodontics and Dental Materials, Bauru School of Dentistry, University of São Paulo, Alameda Octávio Pinheiro Brisolla, 9-75, zip code 17012-901 Bauru, SP, Brazil.
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Jacomine JC, Giacomini MC, Agulhari M, Honório HM, Wang L. Twenty-month Performance of a Universal Bonding System on Simulated-challenged Dentin Substrates Pretreated with Chlorhexidine. Oper Dent 2023; 48:196-206. [PMID: 36656311 DOI: 10.2341/21-142-l] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/30/2022] [Indexed: 01/20/2023]
Abstract
OBJECTIVES Since the use of dentin antiproteolytic agents with universal adhesives (UAs) can potentially degrade the bonding interface, this study evaluated bond strengths with and without chlorhexidine (CHX) on variously altered dentin surfaces for up to 20 months. METHODS Human molar specimens (n=20) were categorized by substrates as S=sound, E=eroded, and C=carious, and by pretreatment as W=water or CHX. These specimens were subjected to micro-tensile bond strength (μTBS) testing at 24 hours, 6 months, and 20 months, after 30 seconds of pretreatment with CHX or W, followed by self-etching and bonding (Adper Single Bond Universal, 3M ESPE). Modes of failure were assessed using optical microscopy (40×) and scanning electron microscopy (SEM), and the results were analyzed by 3-way ANOVA and Tukey's statistical tests (α=0.05). RESULTS Substrate (p<0.001), pre-treatment (p=0.0413), and time (p<0.0001) were statistically significant. The sound-dentin group in initial time (W=39.27/CHX=40.55) yielded the higher μTBS values (MPa) in comparison with altered substrates pre-treated with CHX (E-CHX=19.84; C-CHX=18.24) after 20 months, which showed the lowest values. Under SEM analysis, heterogeneous patterns appeared in the hybrid layer of the CHX-treated group, particularly in the altered substrates. CONCLUSIONS Bond strength to dentin decreased over a period of 20 months using UA with 10-methacryloyloxydecyl-dihydrogen phosphate (MDP) in self-etching mode. Substrates altered by erosion or caries have impaired adhesion and associated clinical use of UA with MDP and CHX should be avoided.
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Affiliation(s)
- J C Jacomine
- Juliana Carvalho Jacomine, DDS, MS, Department of Operative Dentistry, Endodontics and Dental Materials, Bauru School of Dentistry, University of São Paulo, Bauru, SP, Brazil
| | - M C Giacomini
- Marina Ciccone Giacomini, DDS, MS, PhD, Department of Operative Dentistry, Endodontics and Dental Materials, Bauru School of Dentistry, University of São Paulo, Bauru, SP, Brazil, and University Centre Integrated Faculties of Ourinhos, Ourinhos, SP, Brazil
| | - Mas Agulhari
- Maria Angélica Silvério Agulhari, DDS, MS, PhD, Department of Operative Dentistry, Endodontics and Dental Materials, Bauru School of Dentistry, University of São Paulo, Bauru, SP, Brazil
| | - H M Honório
- Heitor Marques Honório, Department of Pediatric Dentistry, Orthodontics and Collective Health, Bauru School of Dentistry, University of São Paulo, Bauru, SP, Brazil
| | - L Wang
- *Linda Wang, Department of Operative Dentistry, Endodontics and Dental Materials, Bauru School of Dentistry, University of São Paulo, Bauru, SP, Brazil
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Boaru MO, Tărăboanță I, Stoleriu S, Andrian S, Pancu G, Nica I, Sufaru IG, Iovan G. The Influence of Chlorhexidine Gluconate Dentine Pre-Treatment on Adhesive Interface and Marginal Sealing. MEDICINA (KAUNAS, LITHUANIA) 2023; 59:medicina59020278. [PMID: 36837479 PMCID: PMC9963215 DOI: 10.3390/medicina59020278] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/03/2023] [Revised: 01/27/2023] [Accepted: 01/30/2023] [Indexed: 02/04/2023]
Abstract
Background and Objectives: The aim of this in vitro study was to evaluate the combined effect of a 2% chlorhexidine aqueous solution and a universal adhesive system applied in self-etch and etch-and-rinse strategies on the composite resin-dentin interface. Materials and Methods: Class V cavities were prepared on the facial and lingual surfaces of forty caries-free molars extracted for orthodontic reasons. The samples were randomly divided into two groups corresponding to the used etching protocol: I-etch-and-rinse; II-self-etch. In each tooth, one cavity was assigned for the control subgroups -IA (n = 20) and IIA (n = 20)-adhesive only, and the opposite cavity was pretreated with a 2% chlorhexidine solution-Gluco CHeX Cerkamed-subgroups IB (n = 20) and IIB (n = 20). Both sets of groups were restored using a universal adhesive system (Single Bond Universal Adhesive, 3M-ESPE) and a bulk-fill composite resin (Filtek One Bulk Fill Restorative, 3M-ESPE). The roots and the pulp tissue were then removed, and a needle connected to a perfusor with 100 mL saline solution was used for pulp pressure simulation with a hydrostatic pressure of 20 cm H2O. Cariogenic attack was simulated using a demineralizing solution for 3 days at a constant temperature of 25 °C. The teeth were then sectioned in a facial-lingual direction and the microleakages at the occlusal and cervical margins were registered and scored using an optical Carl-Zeiss AXIO Imager A1m microscope (Carl-Zeiss). The composite resin-dentin interface was analyzed using a SEM Vega Tescan LMH II. Statistical analysis was performed using the Kruskal-Wallis test with a significance level of p < 0.05. Results: Microleakage evaluation showed no significant differences among the study groups (p > 0.05). In subgroup IA, significant differences were recorded between occlusal and cervical margins (p < 0.05). Conclusions: Application of chlorhexidine on tooth substrate before using a universal bonding system in total etch or self-etch mode has no influence on the adhesive interface in the condition of cariogenic attack. The thickness of the adhesive resin layer seems to be less uniform when using chlorhexidine, but the morphological differences at the adhesive interface have no influence on the sealing capacity of the universal bonding system, regardless of the etching strategy.
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Affiliation(s)
| | - Ionuț Tărăboanță
- Correspondence: (I.T.); (S.S.); Tel.: +40-722-570-053 (I.T.); +40-745-106-066 (S.S.)
| | - Simona Stoleriu
- Correspondence: (I.T.); (S.S.); Tel.: +40-722-570-053 (I.T.); +40-745-106-066 (S.S.)
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Speranza Zabeu G, Candia Scaffa PM, Ciccone Giacomini M, de Mattos Pimenta Vidal C, Tjäderhane L, Wang L. Gelatinolytic activity after dentin pretreatment with dimethyl sulfoxide (DMSO) combined to dental bonding systems: Perspectives for biological responses. J Mech Behav Biomed Mater 2022; 130:105188. [PMID: 35344756 DOI: 10.1016/j.jmbbm.2022.105188] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2022] [Revised: 03/16/2022] [Accepted: 03/18/2022] [Indexed: 11/15/2022]
Abstract
Endogeneous proteolytic responses in dentin bonding interface have addressing to strategies to preventive and therapeutic approaches of clinical use of dentin bonding systems (DBSs), but still present limitations. The aim of this study was to examine the gelatinolytic profile by means of in situ zymography regarding the use of 1% dimethyl sulfoxide (DMSO) as an aprotic solvent. Sound human third molars were prepared and randomized in 10 groups, following the factors 1- DBS: Adper™ Scotchbond Multipurpose [MP], Adper™ Single Bond 2 [SB], Clearfil™ SE Bond [CSE] and Adper™ Scotchbond Universal - Etch-and-rinse [SU-ER] mode and self-etch mode [SU-SE], 2- dentin pretreatment: Control - Water [C], 2% CHX and 1% DMSO and 3- time: Initial-24 h [I], 6 months [6M] and 30 months [30M]. Pretreatments were applied before primer application for 30s. After restoration, specimens were cut into slices, in which one third were incubated with fluorescein-conjugated gelatin for 24h at 37 °C and analyzed by confocal laser scanning microscopy. The other two-thirds were stored for 6 or 30 months at 37 °C. Fluorescence was quantified using Image J and data was subjected for two-way ANOVA followed by Tukey test (p<0.05). Neither DMSO nor CHX affected initial analyses for any tested conditions. After 6 months, it was observed increased fluorescence for MP using both pretreatments and for SB using only DMSO. Regardless time and pretreatment, CSE and SU-SE showed stabilized gelatinolytic pattern. For SU-ER, both CHX and DMSO were able to maintain a lower fluorescence compared to control group after 6 months. 30-month performance states the susceptibility of degradation for all etched-dentin systems. DMSO pretreatment can be promising to reduce gelatinolytic activity combined with an universal adhesive system under etch-and-rinse mode. For self-etching strategies, DMSO was successful to stabilize the gelatinolytic reactions.
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Affiliation(s)
- Giovanna Speranza Zabeu
- Department of Operative Dentistry, Endodontics and Dental Materials, Bauru School of Dentistry, University of São Paulo, Alameda Octávio Pinheiro Brisolla, 9-75, Zip Code, 17012-901, Bauru, SP, Brazil; School of Dentistry, Centro Universitário Sagrado Coração - UNISAGRADO, Rua Irmã Arminda, 10-50, Jardim Brasil, Zip Code, 17011-160, Bauru, SP, Brazil.
| | - Polliana Mendes Candia Scaffa
- Division of Biomaterials and Biomechanics, Department of Restorative Dentistry, Oregon Health & Science University, OHSU, 2730 SW Moody Ave, Zip Code, 97201, Portland, OR, USA.
| | - Marina Ciccone Giacomini
- Department of Operative Dentistry, Endodontics and Dental Materials, Bauru School of Dentistry, University of São Paulo, Alameda Octávio Pinheiro Brisolla, 9-75, Zip Code, 17012-901, Bauru, SP, Brazil; University Centre Integrated Faculties of Ourinhos, Rodovia BR-153, Km 338 S/N Água do Cateto, Zip Code, 19909-100, Ourinhos, SP, Brazil.
| | - Cristina de Mattos Pimenta Vidal
- Department of Operative Dentistry, College of Dentistry, University of Iowa, Iowa City, IA, USA, 801 Newton Rd, DSB S245, Zip Code, 52242, Iowa City, IA, USA.
| | - Leo Tjäderhane
- Department of Oral and Maxillofacial Diseases, University of Helsinki, Helsinki, Finland and Helsinki University Hospital, Helsinki, Zip Code, 90220, Oulu, Finland; Research Unit of Oral Health Sciences and Medical Research Center Oulu (MRC Oulu), Oulu University Hospital, Kajaanintie 50, Zip Code, 90220, Oulu, Finland.
| | - Linda Wang
- Department of Operative Dentistry, Endodontics and Dental Materials, Bauru School of Dentistry, University of São Paulo, Alameda Octávio Pinheiro Brisolla, 9-75, Zip Code, 17012-901, Bauru, SP, Brazil.
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