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Ismail HS, Morrow BR, Ali AI, Mehesen REE, Mahmoud SH, Garcia-Godoy F. Effect of different storage media on elemental analysis and microhardness of cervical cavity margins restored with a bioactive material. Restor Dent Endod 2024; 49:e6. [PMID: 38449501 PMCID: PMC10912542 DOI: 10.5395/rde.2024.49.e6] [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: 05/09/2022] [Revised: 12/26/2022] [Accepted: 01/12/2023] [Indexed: 03/08/2024] Open
Abstract
Objectives This study aimed to investigate the elemental analysis and microhardness of a bioactive material (Activa) and marginal tooth structure after storage in different media. Materials and Methods Fifteen teeth received cervical restorations with occlusal enamel and gingival dentin margins using the tested material bonded with a universal adhesive, 5 of them on the 4 axial surfaces and the other 10 on only the 2 proximal surfaces. The first 5 teeth were sectioned into 4 restorations each, then stored in 4 different media; deionized water, Dulbecco's phosphate buffered saline (DPBS), Tris buffer, and saliva. The storage period for deionized water was 24 hours while it was 3 months for the other media. Each part was analyzed by scanning electron microscopy-energy dispersive spectroscopy (SEM-EDS) analysis for different substrates/distances and the wt% of calcium, phosphorus, silica, and fluoride were calculated. The other 10 teeth were sectioned across the restoration, stored in either Tris buffer or saliva for 24 hours or 3 months, and were evaluated for microhardness of different substrates/areas. Data were analyzed using analysis of variance and Tukey's post hoc test. Results Enamel and dentin interfaces in the DPBS group exhibited a significant increase in calcium and phosphorus wt%. Both silica and fluoride significantly increased in tooth structure up to a distance of 75 μm in the 3-month-media groups than the immediate group. Storage media did not affect the microhardness values. Conclusions SEM-EDS analysis suggests an ion movement between Activa and tooth structure through a universal adhesive while stored in DPBS.
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Affiliation(s)
- Hoda Saleh Ismail
- Conservative Dentistry Department, Faculty of Dentistry, Mansoura University, Mansoura, Egypt
- Department of Bioscience Research, College of Dentistry, University of Tennessee Health Science Center, Memphis, TN, USA
| | - Brian Ray Morrow
- Department of Bioscience Research, College of Dentistry, University of Tennessee Health Science Center, Memphis, TN, USA
| | - Ashraf Ibrahim Ali
- Conservative Dentistry Department, Faculty of Dentistry, Mansoura University, Mansoura, Egypt
| | | | - Salah Hasab Mahmoud
- Conservative Dentistry Department, Faculty of Dentistry, Mansoura University, Mansoura, Egypt
| | - Franklin Garcia-Godoy
- Department of Bioscience Research, College of Dentistry, University of Tennessee Health Science Center, Memphis, TN, USA
- The Forsyth Institute, Cambridge, MA, USA
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Are universal adhesives in etch-and-rinse mode better than old 2-step etch-and-rinse adhesives? One-year evaluation of bonding properties to dentin. J Dent 2023; 132:104481. [PMID: 36918052 DOI: 10.1016/j.jdent.2023.104481] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2022] [Revised: 02/22/2023] [Accepted: 03/08/2023] [Indexed: 03/14/2023] Open
Abstract
OBJECTIVES This study compared the bonding properties of dentin of three 2-step etch-and-rinse adhesives (2-ERAs) to those of three universal adhesives (UAs) applied with an etch-and-rinse strategy (ER), immediately and after 1 year of water storage. METHODS Sixty caries-free molars were divided into 6 groups according to the adhesive systems used (n = 10). The 2-ERA systems included were: 1) Adper Single Bond 2 (SB), 2) Tetric N-Bond (TB), and 3) Ambar (AM); and the UAs systems were: 4) Single Bond Universal (SBU) 5) Tetric N-Bond Universal (TBU), and 6) Ambar Universal (AMU). The occlusal third of each tooth was removed and the adhesives were applied. After the composite build-up, specimens were sectioned and tested for microtensile bond strength (µTBS) and nanoleakage (NL) immediately and after 1 year of water storage. In situ degree of conversion (DC) was only evaluated in the immediate time. For water sorption (WS), solubility (SO), and mass change (MC) tests, 48 disk-shaped specimens were prepared (n = 8) and assessed according to ISO 4049:2009. RESULTS UAs showed higher µTBS and lower NL values than 2-ERAs did after 1 year of water storage (p = 0.001). Regarding DC, 2-ERAs showed higher DC values than UAs (p = 0.001). Regarding WS, 2-ERAs showed higher WS values than those of UAs (p = 0.00001), except for AM and AMU. Lower WS was observed for AM than for other 2-ERAs (p = 0.00001). CONCLUSION The use of UAs applied with the ER strategy seems to be a more effective technique for maintaining adhesion to dentin substrate than 2-ERAS. CLINICAL SIGNIFICANCE This study may support clinicians in selecting the most adequate adhesive system to be used in ER strategy in dentin, demonstrating that UAs were more effective, considering the longevity of the resin restorations.
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Somrit P, Tantilertanant Y, Srisawasdi S. Primer application technique and remaining dentin thickness affected microtensile bond strength of contemporary dentin adhesives under simulated pulp pressure. Clin Oral Investig 2023; 27:139-149. [PMID: 36109375 DOI: 10.1007/s00784-022-04699-0] [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: 03/21/2022] [Accepted: 08/26/2022] [Indexed: 01/28/2023]
Abstract
OBJECTIVES To evaluate the effect of application techniques, type of adhesives and remaining dentin thicknesses on microtensile bond strength (µTBS) of 3 adhesive systems. MATERIALS AND METHODS 112 flat occlusal dentinal surfaces of third molar were randomly allocated into 16 groups based on 2 remaining dentin thicknesses (RDT), 2 application techniques, and 3 adhesive systems (Optibond FL, OFL; Clearfil SE Bond, CSE; and Single Bond Universal, SB); SB was applied in either etch-and-rinse (ER) or self-etch (SE) mode. Simulated pulpal pressure was performed during restorative procedure and water storage. The stick-shaped specimens from each tooth underwent µTBS testing. The data were evaluated using a paired t test and ANOVA followed by a post hoc test. The fractured specimens were evaluated for mode of failure using a stereomicroscope. RESULTS The mean µTBS values were significantly affected by RDT, application technique, and types of adhesives. Neither RDT nor application technique affected µTBS of SB in ER mode, whereas application technique affected both conventional and universal self-etch adhesives. RDT also influenced µTBS of OFL. CONCLUSIONS RDT and application technique differently affected the µTBS of dentin bonding which was product-related. Etch-and-rinse systems had higher bond strength to superficial than to deep dentin, whereas self-etch systems were more sensitive to both RDT and application technique. CLINICAL RELEVANCE The universal adhesive is less sensitive to intrinsic wetness and can be used according to manufacturer's instructions.
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Affiliation(s)
- Paphawee Somrit
- Department of Operative Dentistry, Faculty of Dentistry, Chulalongkorn University, Henri-Dunant Road, Pathumwan, Bangkok, 10330, Thailand.
| | - Yanee Tantilertanant
- Department of Operative Dentistry, Faculty of Dentistry, Chulalongkorn University, Henri-Dunant Road, Pathumwan, Bangkok, 10330, Thailand
| | - Sirivimol Srisawasdi
- Department of Operative Dentistry, Faculty of Dentistry, Chulalongkorn University, Henri-Dunant Road, Pathumwan, Bangkok, 10330, Thailand
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Cavalheiro A, Cruz J, Sousa B, Silva A, Eira R, Coito C, Lopes M. Effect of Application Deviations on Dentin Sealing of a Universal Adhesive: Permeability and Nanoleakage. Eur J Dent 2022; 17:242-249. [PMID: 35817087 PMCID: PMC9949980 DOI: 10.1055/s-0042-1745767] [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] [Indexed: 10/17/2022] Open
Abstract
OBJECTIVE The objective of this study was to evaluate the effect that deviations from the recommended protocol of a universal adhesive system, applied to dentin according to the self-etch (SE) and the etch-and-rinse (ER) techniques, has on permeability and nanoleakage. MATERIALS AND METHODS Permeability: 60 extracted non-carious human third molars (N = 60) were sectioned to obtain 0.7-mm-thick dentin disks. The specimens were randomly assigned to three subgroups and treated with a universal adhesive system (Prime&Bond Active Universal) using the SE and ER techniques: (1) following the manufacturer's instructions with 5 seconds drying (MFR DRY 5S), (2) following the MFR DRY 10S, and (3) reduced application time of the adhesive to 5 seconds (APPL 5S). Nanoleakage: 12 additional 0.7-mm-thick dentin disks were prepared, treated and divided into six groups. They were immersed in 50 wt% ammoniacal silver nitrate and processed according to conventional methods for the analysis of nanoleakage under transmission electron microscopy. STATISTICAL ANALYSIS The results were statistically analyzed by two-way analysis of variance and post-hoc Bonferroni's test. RESULTS Significant differences in permeability reduction were observed among the treatment groups (0.001). The results obtained for APPL 5S were significantly lower than the results obtained for both the MFR DRY 5S (p = 0.003) and MFR DRY 10S (p = 0.001). CONCLUSIONS The reduced application time to 5 seconds creates imperfect dentin tubule sealing, which may explain clinical reports of postoperative sensitivity and early degradation of the resin-dentin interface.
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Affiliation(s)
- Alexandre Cavalheiro
- Department of Operative Dentistry, Faculty of Dental Medicine, Universidade de Lisboa, Portugal,Address for correspondence Alexandre Cavalheiro, DDS, MS, PhD Faculdade de Medicina Dentária da Universidade de Lisboa, Rua Professora Teresa AmbrósioCidade Universitária, 1600-277 LisboaPortugal
| | - Joana Cruz
- Department of Operative Dentistry, Faculty of Dental Medicine, Universidade de Lisboa, Portugal
| | - Bernardo Sousa
- Department of Operative Dentistry, Faculty of Dental Medicine, Universidade de Lisboa, Portugal
| | - Ana Silva
- Department of Operative Dentistry, Faculty of Dental Medicine, Universidade de Lisboa, Portugal
| | - Raquel Eira
- Department of Operative Dentistry, Faculty of Dental Medicine, Universidade de Lisboa, Portugal
| | - Catarina Coito
- Department of Operative Dentistry, Faculty of Dental Medicine, Universidade de Lisboa, Portugal
| | - Manuela Lopes
- Faculty of Dental Medicine, Universidade de Lisboa, Portugal
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de Brito GMAP, Silva DO, Macedo RFC, Ferreira MWC, Bauer J, Pedroso FDB, Reis A, Siqueira FSF, Loguercio AD, Cardenas AFM. Does the Application of Additional Hydrophobic Resin to Universal Adhesives Increase Bonding Longevity of Eroded Dentin? Polymers (Basel) 2022; 14:polym14132701. [PMID: 35808746 PMCID: PMC9268900 DOI: 10.3390/polym14132701] [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: 03/23/2022] [Revised: 05/17/2022] [Accepted: 05/30/2022] [Indexed: 12/10/2022] Open
Abstract
This paper evaluates the effect of an additional hydrophobic resin coat (extra HL) associated with universal adhesives on sound and eroded dentin and evaluated immediately or after 2 years of water storage to improve the microtensile bond strength (μTBS) and nanoleakage (NL) when compared to the use of universal adhesives only. Sixty-four molars were assigned to eight groups using the following combinations: 1. dentin substrate, including sound and eroded dentin; 2. treatment, including the control and extra HL and storage time (immediately and after two-years of storage). Two universal adhesives (Prime & Bond Active or Scotchbond Universal) were evaluated. Before restoration, half of the teeth were subjected to soft-drink erosion. Composite buildups were bonded; specimens were stored (37 °C/24 h), sectioned into resin−dentin bonded sticks and tested for microtensile bond strength and nanoleakage using SEM (immediately and after two-years of storage). Three-way ANOVA and Tukey’s test (α = 0.05%) were used. In the immediate testing, the application of extra HL did not increase microtensile bond strength values compared with the control group in either substrate (p > 0.05). However, extra HL significantly decreased nanoleakage values when applied to eroded and sound dentin (p = 0.0001). After two years, the application of extra HL produced significantly higher microtensile bond strength and lower nanoleakage values than the control group for both adhesives (p = 0.0001). In all cases, sound dentin showed higher microtensile bond strength and lower nanoleakage values than eroded dentin (p = 0.000001). An extra HL increased the bond strength and reduced nanoleakage in eroded dentin after two-years of storage.
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Affiliation(s)
- Graça Maria Abreu Pereira de Brito
- Department of Postgraduate Program in Dentistry, CEUMA University, São Luis 65075-120, Brazil; (G.M.A.P.d.B.); (D.O.S.); (F.S.F.S.); (A.F.M.C.)
| | - Daniella Oliveira Silva
- Department of Postgraduate Program in Dentistry, CEUMA University, São Luis 65075-120, Brazil; (G.M.A.P.d.B.); (D.O.S.); (F.S.F.S.); (A.F.M.C.)
| | | | | | - Jose Bauer
- Department of Postgraduate Program in Dentistry, Federal University of Maranhao, São Luis 65085-805, Brazil; (R.F.C.M.); (J.B.)
| | - Flavia de Brito Pedroso
- Department of Pharmacology, State University of Ponta Grossa, Uvaranas 84030-900, Brazil; (M.W.C.F.); (F.d.B.P.)
| | - Alessandra Reis
- Department of Restorative Dentistry, State University of Ponta Grossa, Uvaranas 84030-900, Brazil;
| | - Fabiana Suelen Figuerêdo Siqueira
- Department of Postgraduate Program in Dentistry, CEUMA University, São Luis 65075-120, Brazil; (G.M.A.P.d.B.); (D.O.S.); (F.S.F.S.); (A.F.M.C.)
| | - Alessandro Dourado Loguercio
- Department of Restorative Dentistry, State University of Ponta Grossa, Uvaranas 84030-900, Brazil;
- Correspondence:
| | - Andres Felipe Millan Cardenas
- Department of Postgraduate Program in Dentistry, CEUMA University, São Luis 65075-120, Brazil; (G.M.A.P.d.B.); (D.O.S.); (F.S.F.S.); (A.F.M.C.)
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