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Bourgi R, Kharouf N, Cuevas-Suárez CE, Lukomska-Szymańska M, Devoto W, Kassis C, Hasbini O, Mancino D, Haikel Y, Hardan L. Effect of Modified Triple-Layer Application on the Bond Strength of Different Dental Adhesive Systems to Dentin. J Funct Biomater 2023; 14:522. [PMID: 37888187 PMCID: PMC10607670 DOI: 10.3390/jfb14100522] [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: 09/20/2023] [Revised: 10/10/2023] [Accepted: 10/12/2023] [Indexed: 10/28/2023] Open
Abstract
The goal of this article was to assess the effect of modified triple-layer application (MTLA) in conjunction with the active bonding technique on the bond strength of four adhesive systems to dentinal substrate. The adhesives tested were Prime&Bond Universal (PBU), OptiBond Universal (OBU), OptiBond FL (OBFL), and Clearfil SE (CSE). The adhesives were applied according to the following strategies: single active application (A) and triple adhesive layer application including Active-Passive-Passive (APP); AAP; and AAA. The micro-tensile bond strength test was evaluated following 24 h or 6 months of storage. The composite-dentin interface morphology was investigated using scanning electron microscopy. The data were statistically analyzed with a significance level of α = 0.05. At 24 h of aging, all of the factors tested were not significant (p > 0.05) for CSE. For OBFL, OBU, and PBU, statistically higher values were observed for the A technique (p < 0.05). Plus, there were no significant variances between the APP, AAP, and AAA techniques (p > 0.05) for OBFL and PBU. However, for OBU, there were no significant differences between the A and AAA techniques (p > 0.05). After 6 months of aging, the A technique showed statistically higher values when compared to the other techniques (p < 0.01), except for OBFL, where the A and AAA techniques showed promising outcomes. When comparing the bond strength values of 24 h and 6 months, only for PBU, all of the techniques used resulted in bond strength stability over time (p > 0.05). Thicker adhesive layers were observed when MTLA was applied. Only the OBFL adhesive showed the formation of resin tags in all of the modalities tested. The bonding performances of the different application techniques used were material-dependent.
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Affiliation(s)
- Rim Bourgi
- Department of Restorative Dentistry, School of Dentistry, Saint-Joseph University, Beirut 1107 2180, Lebanon; (C.K.); (L.H.)
- Department of Biomaterials and Bioengineering, INSERM UMR_S 1121, University of Strasbourg, 67000 Strasbourg, France; (D.M.); (Y.H.)
| | - Naji Kharouf
- Department of Biomaterials and Bioengineering, INSERM UMR_S 1121, University of Strasbourg, 67000 Strasbourg, France; (D.M.); (Y.H.)
- Department of Endodontics and Conservative Dentistry, Faculty of Dental Medicine, University of Strasbourg, 67000 Strasbourg, France
| | - Carlos Enrique Cuevas-Suárez
- Dental Materials Laboratory, Academic Area of Dentistry, Autonomous University of Hidalgo State, San Agustín Tlaxiaca 42160, Mexico;
| | | | - Walter Devoto
- Independent Researcher, 16030 Sestri Levante, Italy;
| | - Cynthia Kassis
- Department of Restorative Dentistry, School of Dentistry, Saint-Joseph University, Beirut 1107 2180, Lebanon; (C.K.); (L.H.)
| | - Omar Hasbini
- Department of Prosthetic Dentistry, School of Dentistry, Saint-Joseph University, Beirut 1107 2180, Lebanon;
| | - Davide Mancino
- Department of Biomaterials and Bioengineering, INSERM UMR_S 1121, University of Strasbourg, 67000 Strasbourg, France; (D.M.); (Y.H.)
- Department of Endodontics and Conservative Dentistry, Faculty of Dental Medicine, University of Strasbourg, 67000 Strasbourg, France
- Pôle de Médecine et Chirurgie Bucco-Dentaire, Hôpital Civil, Hôpitaux Universitaire de Strasbourg, 67000 Strasbourg, France
| | - Youssef Haikel
- Department of Biomaterials and Bioengineering, INSERM UMR_S 1121, University of Strasbourg, 67000 Strasbourg, France; (D.M.); (Y.H.)
- Department of Endodontics and Conservative Dentistry, Faculty of Dental Medicine, University of Strasbourg, 67000 Strasbourg, France
- Pôle de Médecine et Chirurgie Bucco-Dentaire, Hôpital Civil, Hôpitaux Universitaire de Strasbourg, 67000 Strasbourg, France
| | - Louis Hardan
- Department of Restorative Dentistry, School of Dentistry, Saint-Joseph University, Beirut 1107 2180, Lebanon; (C.K.); (L.H.)
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Haak R, Stache G, Schneider H, Häfer M, Schmalz G, Schulz-Kornas E. Effect of the Adhesive Strategy on Clinical Performance and Marginal Integrity of a Universal Adhesive in Non-Carious Cervical Lesions in a Randomized 36-Month Study. J Clin Med 2023; 12:5776. [PMID: 37762718 PMCID: PMC10531668 DOI: 10.3390/jcm12185776] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2023] [Revised: 08/31/2023] [Accepted: 09/01/2023] [Indexed: 09/29/2023] Open
Abstract
The effectiveness of a universal adhesive applied in three application modes for the preparation of Class V composite restorations was evaluated both clinically and by quantitative marginal analysis (QMA) over 36 months. In 50 patients, three (n = 21) or four (n = 29) non-carious cervical lesions (NCCL) were restored with Venus® Diamond Flow (Kulzer GmbH, Hanau, Germany). The adhesive iBond® Universal (iBU, Kulzer, Germany) was used in self-etch (SE), etch-and-rinse (ER), or selective-enamel-etch mode (SEE). The etch-and-rinse adhesive OptiBondTM FL served as a control (OFL, Kerr GmbH, Herzogenrath, Germany). The restorations were clinically assessed (FDI criteria) at 14 days (BL), 6, 12, 24, and 36 months. Additionally, QMA was conducted on all restorations of 11 randomly selected patients. FDI criteria and marginal gap and perfect margin were compared between and within groups and recalls using McNemar, Wilcoxon, or Mann-Whitney U-tests (α = 0.05). Starting with 12 months, cumulative failure rates were lower in iBU-SE (0.0%, p = 0.016) and iBU-ER groups (2.1%, p = 0.07) compared to OFL (16.7%). At two years, iBU-SEE also showed fewer failures (0.0% SEE vs. 34.6% OFL, p = 0.016), as did iBU-SE compared to iBU-ER after 36 months (2.2 and 19.6%, p = 0.039). From BL, the iBU-SEE group always had the fewest marginal gaps and the highest percentage of perfect margins. From BL, iBU-SEE (0%, p = 0.008) and iBU-ER (0.2%, p = 0.027) showed significantly fewer marginal gaps compared to OFL (2.5%) and more perfect margins were found with iBU-SEE starting at 6 months (p = 0.054). The SEE and ER modes ensured the most excellent marginal quality, with differences from the control appearing earlier with QMA than clinically. In restoring NCCls, iBU showed superior clinical performance over OFL, especially in modes SE and SEE.
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Affiliation(s)
| | | | | | | | | | - Ellen Schulz-Kornas
- Department of Cariology, Endodontology and Periodontology, University of Leipzig, Liebigstraße 12, 04103 Leipzig, Germany
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Tang C, Ahmed MH, Yao C, Mercelis B, Yoshihara K, Peumans M, Van Meerbeek B. Bonding performance of experimental HEMA-free two-step universal adhesives to low C-factor flat dentin. Dent Mater 2023:S0109-5641(23)00106-9. [PMID: 37164892 DOI: 10.1016/j.dental.2023.04.008] [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: 01/07/2023] [Accepted: 04/27/2023] [Indexed: 05/12/2023]
Abstract
OBJECTIVES Experimental two-step universal adhesives (2-UAs) providing a particle-filled hydrophobic adhesive resin with a significant film thickness to hydrophobically seal the adhesive interface were designed and synthesized. This study aimed to characterize their interfacial interaction with dentin, to determine whether the 2-UA formulations achieve durable bonding to low C-factor flat dentin and to measure their water sorption. METHODS Bonding effectiveness of 2-UAs that combine a 10-MDP-based primer with hydrophobic adhesive resins differing only for filler (BZF-21, BZF-29, and BZF-29_hv) were comparatively investigated with the commercial adhesive Clearfil SE Bond 2 (C-SE2, Kuraray Noritake). Adhesive-dentin interfaces were characterized with TEM. Adhesive-resin disks were immersed in distilled water at 37 °C for 1 week, 6 months and 1 year to measure water sorption and solubility. 'Immediate' and 'aged' micro-tensile bond strength (μTBS) of the adhesives applied in etch-and-rinse (E&R) and self-etch (SE) bonding mode to low C-factor flat dentin were measured. Statistical analyses involved linear mixed-effects (LME) modelling and Kruskal-Wallis testing (p < 0.05). RESULTS TEM revealed that E&R hybrid layers were more sensitive to aging than SE hybrid layers. Lower water sorption was recorded for all UAs compared with C-SE2. The immediate μTBS of BZF-21 and BZF-29 was not significantly different from that of C-SE2. The 1-year aged μTBS of all 2-UAs was significantly lower than that of C-SE2, except for BZF-29 applied in E&R mode. A significant reduction in μTBS upon 1-year aging was recorded for BZF-21 and BZF-29 applied in E&R mode. A significant difference in μTBS between E&R and SE bonding modes was recorded for all adhesives except BZF-21. SIGNIFICANCE Experimental 2-UAs with a hydrophobic adhesive-resin design produced± 20-μm thick adhesive-resin layers, absorbed less water and resulted in bonding performance that was more aging-resistant when applied in SE than in E&R bonding mode. The silica-filled BZF-29 2-UA revealed the most comparable bonding performance with C-SE2 in a low C-factor condition (flat dentin).
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Affiliation(s)
- C Tang
- KU Leuven (University of Leuven), Department of Oral Health Sciences, BIOMAT - Biomaterials Research Group & UZ Leuven (University Hospitals Leuven), Dentistry, Leuven, Belgium
| | - M H Ahmed
- KU Leuven (University of Leuven), Department of Oral Health Sciences, BIOMAT - Biomaterials Research Group & UZ Leuven (University Hospitals Leuven), Dentistry, Leuven, Belgium; Tanta University, Faculty of Dentistry, Department of Dental Biomaterials, Tanta, Egypt
| | - C Yao
- KU Leuven (University of Leuven), Department of Oral Health Sciences, BIOMAT - Biomaterials Research Group & UZ Leuven (University Hospitals Leuven), Dentistry, Leuven, Belgium; Wuhan University, School & Hospital of Stomatology, The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine Ministry of Education, Wuhan, China
| | - B Mercelis
- KU Leuven (University of Leuven), Department of Oral Health Sciences, BIOMAT - Biomaterials Research Group & UZ Leuven (University Hospitals Leuven), Dentistry, Leuven, Belgium
| | - K Yoshihara
- National Institute of Advanced Industrial Science and Technology (AIST), Health and Medical Research Institute, Kagawa, Japan; Okayama University, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Department of Pathology & Experimental Medicine, Okayama, Japan
| | - M Peumans
- KU Leuven (University of Leuven), Department of Oral Health Sciences, BIOMAT - Biomaterials Research Group & UZ Leuven (University Hospitals Leuven), Dentistry, Leuven, Belgium
| | - B Van Meerbeek
- KU Leuven (University of Leuven), Department of Oral Health Sciences, BIOMAT - Biomaterials Research Group & UZ Leuven (University Hospitals Leuven), Dentistry, Leuven, Belgium.
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Goodacre CJ, Eugene Roberts W, Munoz CA. Noncarious cervical lesions: Morphology and progression, prevalence, etiology, pathophysiology, and clinical guidelines for restoration. J Prosthodont 2023; 32:e1-e18. [PMID: 35920595 DOI: 10.1111/jopr.13585] [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: 05/22/2022] [Accepted: 07/25/2022] [Indexed: 11/30/2022] Open
Abstract
PURPOSE To synthesize the literature regarding noncarious cervical lesions (NCCLs) and propose clinical guidelines when lesion restoration is indicated. MATERIAL AND METHODS A PubMed search was performed related to NCCL morphology, progression, prevalence, etiology, pathophysiology, and restoration. RESULTS NCCLs form as either rounded (saucerlike) depressions with smooth, featureless surfaces that progress mainly in height or as V-shaped indentations that increase in both height and depth. Prevalence ranges from less than 10% to over 90% and increases with age. Common locations are the facial surfaces of maxillary premolars. They have a multifactorial etiology due to personal habits such as excessive horizontal toothbrushing and consumption of acidic foods and drinks. Occlusal factors have been identified as contributing to the prevalence of NCCLs in some studies, whereas other studies indicate there is no relationship. The concept of abfraction has been proposed whereby mechanical stress from occlusal loading plays a role in the development and progression of NCCLs with publications supporting the concept and others indicating it lacks the required clinical documentation. Regardless of the development mechanism, demineralization occurs and they are one of the most common demineralization diseases in the body. Treatment should be managed conservatively through preventive intervention with restorative treatment delayed until it becomes necessary due to factors such as lesion progression, impact on patient's quality of life, sensitivity, poor esthetics, and food collection may necessitate restoration. Composite resins are commonly used to restore NCCLs although other materials such as glass ionomer and resin-modified glass ionomer are also used. Sclerotic dentin does not etch like normal dentin and therefore it has been recommended to texture the dentin surface with a fine rotary diamond instrument to improve restoration retention. Some clinicians use mechanical retention to increase retention. Beveling of enamel is used to increase the bonding area and retention as well as enhance the esthetic result by gradually creating a color change between the restoration and tooth. Both multistep and single-step adhesives have been used. Dentin etching should be increased to 30 seconds due to the sclerotic dentin with the adhesive agent applied using a light scrubbing motion for 20 seconds but without excessive force that induces substantial bending of a disposable applicator. Both flowable and sculptable composite resins have been successfully used with some clinicians applying and polymerizing a layer of flowable composite resin and then adding an external layer of sculptable composite resin to provide enhanced resistance to wear. When caries is present, silver diamine fluoride has been used to arrest the caries rather than restore the lesion. CONCLUSIONS Noncarious cervical lesions (NCCLs) form as smooth saucerlike depressions or as V-shaped notches. Prevalence values as high as 90% and as low as 10% have been reported due to habits such as excessive toothbrushing and an acidic diet. Occlusal factors have been proposed as contributing to their presence but it remains controversial. Publications have both supported and challenged the concept of abfraction. They are one of the most common demineralization diseases in the body. Conservative treatment through prevention is recommended with restorative treatment delayed as long as possible. When treatment is needed, composite resins are commonly used with proposed restorative guidelines including texturing the sclerotic dentin, beveling the enamel, potential use of mechanical retention, 30 seconds of acid etching, and use of either multistep or single-step adhesives in conjunction with a light scrubbing motion for 20 seconds without excessive force placed on disposable applicators.
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Affiliation(s)
- Charles J Goodacre
- Advanced Education Program in Implant Dentistry, Loma Linda University School of Dentistry, Loma Linda, California
| | - W Eugene Roberts
- Adjunct Professor Mechanical Engineering, Indiana University & Purdue University, Indianapolis, Indiana
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Longevity of composite restorations is definitely not only about materials. Dent Mater 2023; 39:1-12. [PMID: 36494241 DOI: 10.1016/j.dental.2022.11.009] [Citation(s) in RCA: 16] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2022] [Revised: 10/18/2022] [Accepted: 11/11/2022] [Indexed: 12/12/2022]
Abstract
OBJECTIVES This review study provides an overview of factors that influence the longevity of all types of direct resin composite restorations. METHODS A systematic search was performed in PubMed, Scopus, and Web of Science databases for articles reporting data from primary longitudinal clinical studies on composite longevity published 2011-2021. Prospective or retrospective studies with restorations in permanent dentition, with follow-up periods of at least 5 years were included. RESULTS In total, 33 articles were included with different study designs, practice settings, datasets, countries of origin, and sample sizes. Annual failure rates of restorations ranged from 0.08% to 6.3%. Survival rates varied between 23% and 97.7%, success rates varied between 43.4% and 98.7%. Secondary caries, fractures, and esthetic compromise were main reasons for failures. Risk factors for reduced restoration durability included patient-level factors (e.g., caries risk, parafunctional habits, number of check-ups per year, socioeconomic status), dentist factors (different operators, operator's experience), and tooth/restoration factors (endodontic treatment, type of tooth, number of restored surfaces). Patient gender and the composite used generally did not influence durability. SIGNIFICANCE A number of risk factors are involved in the longevity of composite restorations. Differences between composites play a minor role in durability, assuming that materials and techniques are properly applied by dentists. Patient factors play a major role in longevity. The decision-making process implemented by dentists relative to the diagnosis of aging or failed restorations may also affect the longevity of restorations. Clinicians should treat patients comprehensively and promote a healthy lifestyle to ensure longevity.
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Clinical Outcomes and Quantitative Margin Analysis of a Universal Adhesive Using a Randomized Clinical Trial over Three Years. J Clin Med 2022; 11:jcm11236910. [PMID: 36498485 PMCID: PMC9737201 DOI: 10.3390/jcm11236910] [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: 09/29/2022] [Revised: 11/15/2022] [Accepted: 11/21/2022] [Indexed: 11/25/2022] Open
Abstract
The effectiveness of a universal adhesive applied in different application modes for the preparation of Class V composite restorations was evaluated both clinically and by quantitative marginal analysis (QMA). In each of the 22 patients, four non-carious cervical lesions (NCCL) were restored with Filtek™ Supreme XTE (3M). The adhesive Scotchbond™ Universal (SBU, 3M) was applied in self-etch (SE), selective-enamel-etch (SEE) or etch-and-rinse (ER) modes. The etch-and-rinse adhesive OptiBond™ FL (OFL, Kerr) served as a control. The restorations were clinically evaluated (FDI criteria) after 14 days (BL), 6, 12, 24, and 36 months. Additionally, QMA was conducted on all restorations of 11 randomly selected patients. The FDI criteria and marginal gap were statistically compared between the groups at each recall as well as for the time periods between recalls. The cumulative failure rate was non-significantly higher in the OFL group when compared to all of the SBU groups. Marginal adaptation in the OFL and SBU-SE/ER groups was significantly decreased (BL-36 m, p: 0.004) in comparison to the SBU-SEE group (BL-36 m, p: 0.063). More marginal gaps were found in the OFL group than in the SBU-SEE (BL to 36 m, p: 0.063-0.003) and SBU-ER (24/36 m, p: 0.066/0.005) groups as well as in the SBU-SE group when compared to the SBU-SEE (12-36 m, pi ≤ 0.016) and SBU-ER (24/36 m, p: 0.055/0.001) groups. SBU-SEE performed most effectively. The clinical evaluation and QMA corresponded, yet QMA detected group differences earliest after 6 months and is thus a valuable extension to clinical evaluations.
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Tsujimoto A, Barkmeier WW, Teixeira EC, Takamizawa T, Miyazaki M, Latta MA. Fatigue bond strength of dental adhesive systems: Historical background of test methodology, clinical considerations and future perspectives. JAPANESE DENTAL SCIENCE REVIEW 2022; 58:193-207. [PMID: 35789771 PMCID: PMC9250030 DOI: 10.1016/j.jdsr.2022.05.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2021] [Revised: 01/27/2022] [Accepted: 05/09/2022] [Indexed: 10/31/2022] Open
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Inglês M, Vasconcelos e Cruz J, Mano Azul A, Polido M, Delgado AHS. Comparative Assessment of Different Pre-Treatment Bonding Strategies to Improve the Adhesion of Self-Adhesive Composites to Dentin. Polymers (Basel) 2022; 14:3945. [PMID: 36235894 PMCID: PMC9570807 DOI: 10.3390/polym14193945] [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: 08/07/2022] [Revised: 09/14/2022] [Accepted: 09/14/2022] [Indexed: 11/17/2022] Open
Abstract
The aim of this study is to compare the adhesive interface formed in dentin, using self-adhesive composites applied with different bonding strategies, by testing the microtensile bond strength (μTBS) and ultramorphology through the use of light microscopy. Permanent, sound human molars were randomly allocated to six experimental groups. The groups included a negative control group, where only etching was performed via EtchOnly; a positive control group where an adhesive was applied, OptiBondFL (OBFL); and an experimental group where a primer was applied using a co-curing strategy together with a composite (Primer_CoCuring). The samples were sectioned into microspecimens for μTBS (n = 8) and into 1-mm thick slabs for light microscopy using Masson’s trichrome staining protocol (n = 3). The statistical analysis included a two-way ANOVA for μTBS data and Tukey’s HSD was used as a post-hoc test (significance level of 5%; SPSS v. 26.0). The results of the μTBS revealed that the self-adhesive composite (F = 6.0, p < 0.018) and the bonding strategy (F = 444.1, p < 0.001) significantly affected the bond strength to dentin. However, their interactions were not significant (F = 1.2, p = 0.29). Etching dentin with no additional treatment revealed the lowest μTBS (VF_EtchOnly = 2.4 ± 0.8 MPa; CC_EtchOnly = 2.0 ± 0.4 MPa), which was significantly different from using a primer (VF_CoCu = 8.8 ± 0.8 MPa; CC_CoCu = 6.3 ± 1.0 MPa) or using the full adhesive (VF_OptiBondFL = 22.4 ± 0.3 MPa; CC_OptibondFL = 21.2 ± 0.4 MPa). Microscopy images revealed that the experimental Primer_CoCuring was the only group with no collagen fibers exposed to the dentin−composite interface. Overall, the use of a primer, within the limitations of this study, increased the bonding of the self-adhesive composite and provided sufficient infiltration of the collagen based on light-microscopic imaging.
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Affiliation(s)
- Magali Inglês
- Instituto Universitário Egas Moniz (IUEM), Monte de Caparica, 2829-511 Almada, Portugal
| | - Joana Vasconcelos e Cruz
- Instituto Universitário Egas Moniz (IUEM), Monte de Caparica, 2829-511 Almada, Portugal
- Centro de Investigação Interdisciplinar Egas Moniz (CiiEM), Monte de Caparica, 2829-511 Almada, Portugal
| | - Ana Mano Azul
- Instituto Universitário Egas Moniz (IUEM), Monte de Caparica, 2829-511 Almada, Portugal
- Centro de Investigação Interdisciplinar Egas Moniz (CiiEM), Monte de Caparica, 2829-511 Almada, Portugal
| | - Mário Polido
- Instituto Universitário Egas Moniz (IUEM), Monte de Caparica, 2829-511 Almada, Portugal
- Centro de Investigação Interdisciplinar Egas Moniz (CiiEM), Monte de Caparica, 2829-511 Almada, Portugal
| | - António H. S. Delgado
- Instituto Universitário Egas Moniz (IUEM), Monte de Caparica, 2829-511 Almada, Portugal
- Centro de Investigação Interdisciplinar Egas Moniz (CiiEM), Monte de Caparica, 2829-511 Almada, Portugal
- Division of Biomaterials & Tissue Engineering, UCL Eastman Dental Institute, University College London, Royal Free Hospital, Rowland Hill Street, Hampstead, London NW3 2PF, UK
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A Retrospective Clinical Study on Factors Influencing the Failure of NCCL Restorations. Int J Dent 2022; 2022:8048265. [PMID: 35449763 PMCID: PMC9017584 DOI: 10.1155/2022/8048265] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2022] [Accepted: 04/02/2022] [Indexed: 12/04/2022] Open
Abstract
Objectives This retrospective study evaluated the factors influencing the clinical failure of noncarious cervical lesion (NCCL) restorations. Methods Patients were routinely treated by undergraduate or postgraduate students and randomly received a clinical recall evaluation. A retrospective study was performed with two experienced calibrated examiners to evaluate NCCL restorations, including the critical parameters of retention, caries, marginal discoloration, and marginal integrity. The factors related to the restoration included gender, age, arch site, tooth position, the presence of occlusal wear facets, caries risk, operator, adhesive strategy, and composite. The clinical failure comparison between the parameters and factors was performed using the binary logistic regression analysis. Results A total of 460 cervical restorations from 96 patients were evaluated. The adhesive strategy and the presence of occlusal wear facets were the most important factors influencing the parameter failure. Therefore, the highest failure was marginal integrity, in which the gingival marginal integrity failure was 50.7%, and the occlusal marginal integrity failure was 42.4%. Conclusions The main factors influencing clinical failure for partial loss, marginal discoloration, and marginal integrity were the adhesive strategy and the presence of occlusal wear facets. Therefore, marginal integrity was the most frequent failure parameter.
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Beck F, Ilie N. Riboflavin and Its Effect on Dentin Bond Strength: Considerations for Clinical Applicability-An In Vitro Study. BIOENGINEERING (BASEL, SWITZERLAND) 2022; 9:bioengineering9010034. [PMID: 35049743 PMCID: PMC8772893 DOI: 10.3390/bioengineering9010034] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/29/2021] [Revised: 01/10/2022] [Accepted: 01/10/2022] [Indexed: 11/30/2022]
Abstract
Bioactive collagen crosslinkers propose to render the dentin hybrid layer less perceptive to hydrolytic challenge. This study aims to evaluate whether bond strength of dental resin composite to dentin benefits from riboflavin (RB)-sensitized crosslinking when used in a clinically applicable protocol. A total of 300 human dentin specimens were prepared consistent with the requirements for a macro-shear bond test. RB was applied on dentin, either incorporated in the primer (RBp) of a two-step self-etch adhesive or as an aqueous solution (RBs) before applying the adhesive, and blue light from a commercial polymerization device was used for RB photoactivation. Bonding protocol executed according to the manufacturer’s information served as control. Groups (n = 20) were tested after 1 week, 1 month, 3 months, 6 months or 1 year immersion times (37 °C, distilled water). The different application methods of RB significantly influenced bond strength (p < 0.001) with a medium impact (η2p = 0.119). After 1 year immersion, post hoc analysis identified a significant advantage for RB groups compared to RBp (p = 0.018), which is attributed to a pH-/solvent-dependent efficiency of RB-sensitized crosslinking, stressing the importance of formulation adjustments. We developed an application protocol for RB-sensitized crosslinking with emphasis on clinical applicability to test its performance against a gold-standard adhesive, and are confident that, with a few adjustments to the application solution, RB-sensitized crosslinking can improve the longevity of adhesive restorations in clinics.
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Daher R, Krejci I, di Bella E, Marger L. Evaluation of the Validity of Digital Optical Microscopy in the Assessment of Marginal Adaptation of Dental Adhesive Interfaces. Polymers (Basel) 2021; 14:polym14010083. [PMID: 35012106 PMCID: PMC8747457 DOI: 10.3390/polym14010083] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2021] [Revised: 12/14/2021] [Accepted: 12/23/2021] [Indexed: 11/16/2022] Open
Abstract
Analysis of marginal adaptation of dental adhesive interfaces using scanning electron microscopy has proven to be a powerful nondestructive method to evaluate the quality of adhesion. This methodology is, however, time-consuming and needs expensive equipment. The purpose of this study was to evaluate the possibility and efficiency of using a digital optical microscope (DOM) to perform marginal analysis and to compare it with the scanning electron microscope (SEM) analysis. Fifteen defect-free molars were selected for this study. Class V cavities were prepared and restored with resin composite, and epoxy replicas were obtained from silicone impressions of the restored teeth. Custom-made image analysis software was then used to measure the percentage of the noncontinuous margins (NCM) of each sample. To compare the DOM to the gold standard, SEM, each sample was analyzed 10 times using the DOM and three times using the SEM, by the same experienced operator. The repeatability coefficient and concordance were evaluated, and a Bland and Altman analysis was used for comparison of the two methods of measurements. To validate the DOM analysis method, an ANOVA approach (Gage R R) was used. Repeatability and reproducibility, which are two components of precision to validate the DOM analysis system, were calculated. For this, the same restorations were analyzed by two additional operators three times with the DOM. The duration of each step of the analysis using both methods was also recorded as a secondary outcome. Regarding the repeatability of each method, the Friedman test showed no statistically significant difference within the repetitions of measurements by SEM and DOM (p = 0.523 and p = 0.123, respectively). Moreover, the Bland-Altman analysis revealed a bias of 0.86 and concluded no statistically significant difference between the two methods, DOM and SEM. ANOVA evaluated DOM measurement system variation including the variances of repeatability and reproducibility that represented, respectively, 0.3% and 4% of the variance components. Reproducibility or inter-operator variability represented the principal source of variability with a statistically significant difference (p = 0.024). The time required for analysis with SEM was almost double that of DOM. The use of digital optical microscopy appears to be a valid alternative to the SEM for the analysis of marginal adaptation of dental adhesive interfaces. Further studies to evaluate the effect of training of operators in digital optical microscopy could reveal higher accuracy for this method and inter-operator agreement when experience is gained.
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Affiliation(s)
- René Daher
- Division of Cariology and Endodontology, University of Geneva, University Clinics of Dental Medicine, 1, Rue Michel Servet, 1204 Geneva, Switzerland;
- Correspondence: (R.D.); (L.M.)
| | - Ivo Krejci
- Division of Cariology and Endodontology, University of Geneva, University Clinics of Dental Medicine, 1, Rue Michel Servet, 1204 Geneva, Switzerland;
| | - Enrico di Bella
- Department of Political Science, University of Genoa, 16124 Genoa, Italy;
| | - Laurine Marger
- Division of Cariology and Endodontology, University of Geneva, University Clinics of Dental Medicine, 1, Rue Michel Servet, 1204 Geneva, Switzerland;
- Correspondence: (R.D.); (L.M.)
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Dreweck F, Burey A, de Oliveira Dreweck M, Fernandez E, Loguercio AD, Reis A. Challenging the Concept that OptiBond FL and Clearfil SE Bond in NCCLs Are Gold Standard Adhesives: A Systematic Review and Meta-analysis. Oper Dent 2021; 46:E276-E295. [PMID: 34919728 DOI: 10.2341/20-059-lit] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/27/2021] [Indexed: 11/23/2022]
Abstract
PURPOSE The following PICO (Patient/Population, Intervention, Comparison, and Outcomes) question was proposed: "Are retention rates of composite resin restorations in noncarious cervical lesions (NCCLs) when using adhesives considered "gold standard" (OptiBond FL and Clearfil SE Bond) higher than those obtained with other adhesives brands"? METHODS A search was performed in February 2019 (updated in November 2019) in the PubMed/MEDLINE, EMBASE, LILACS, BBO, Web of Science, Cochrane Library, Grey Literature, and IADR abstracts (1990-2018); unpublished and ongoing trial registries, dissertations, and theses were also searched. Only randomized clinical trials (RCTs) conducted in NCCLs that compared either OptiBond FL or Clearfil SE Bond adhesive with other commercially available adhesives were included. The risk of bias (RoB) was applied by using the Cochrane Collaboration tool. A meta-analysis was performed for retention rates at different follow-up times using a random effects model for both the adhesives. Heterogeneity was assessed with the Cochran Q test and I2 statistics. Grading of Recommendations: Assessment, Development and Evaluation (GRADE) assessed the quality of evidence. RESULTS After removal of duplicates and noneligible articles, 25 studies remained for qualitative synthesis, as one study was common to the two adhesives, of which 9 studies were used for the OptiBond FL meta-analysis and 14 for the Clearfil SE Bond meta-analysis. No significant differences were observed for retention rates in follow-up periods of 12-24 months (p=0.97), 36-48 months (p=0.72), or 108-156 months (p=0.73) for OptiBond FL; and for 12-24 months (p=0.10) and 36-48 months (p=0.17) for Clearfil SE Bond. A significant difference was only found for OptiBond FL at 60-96 months (p=0.02), but only three studies were included in this meta-analysis. CONCLUSIONS The evidence from available RCTs conducted in NCCLs that compared OptiBond FL or Clearfil SE Bond does not support the widespread concept that these adhesives are better than any other competitive brands available in the dental market.
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Affiliation(s)
- Fds Dreweck
- Fabiana Dias Simas Dreweck, DDS, MS, PhD student, Department of Restorative Dentistry, School of Dentistry, State University of Ponta Grossa, Uvaranas, PR, Brazil. Adjunctive professor, Campos Gerais Higher Education Center- CESCAGE, Ponta Grossa, PR, Brazil
| | - A Burey
- Adrieli Burey, DDS, MS, PhD student, Department of Restorative Dentistry, School of Dentistry, State University of Ponta Grossa, Uvaranas, PR, Brazil
| | - M de Oliveira Dreweck
- Marcelo de Oliveira Dreweck, MS, assistant professor, Medicine Department, State University of Ponta Grossa, Uvaranas, PR, Brazil
| | - E Fernandez
- Eduardo Fernandez, DDS, MS, PhD, professor, Restorative Dentistry Department, Faculty of Dentistry, University of Chile, Santiago, Chile; Instituto de Ciencias Biomédicas, Universidad Autónoma de Chile, Providencia, Chile
| | - A D Loguercio
- Alessandro D. Loguercio, DDS, MS, PhD, professor, Department of Restorative Dentistry, School of Dentistry, State University of Ponta Grossa, Uvaranas, PR, Brazil
| | - A Reis
- *Alessandra Reis, DDS, PhD, professor, Department of Restorative Dentistry, School of Dentistry, State University of Ponta Grossa, Uvaranas, PR, Brazil
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The "Pre-Finishing" Approach in Direct Anterior Restorations. A Case Series. Dent J (Basel) 2021; 9:dj9070079. [PMID: 34356195 PMCID: PMC8307093 DOI: 10.3390/dj9070079] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2021] [Revised: 07/01/2021] [Accepted: 07/05/2021] [Indexed: 11/19/2022] Open
Abstract
In esthetic restorations of anterior teeth the clinician has to manage several aspects in order to have a predictable outcome. A deep knowledge of the anatomy as well as the adhesive procedures and the optical properties of resin-based composites are mandatory to achieve esthetic results. Contemporary restorative materials present either several shades and different translucency properties and therefore they are able to mimic teeth’s optical behavior thus providing a natural aspect to anterior restorations. The wrong thickness of different composite layers may provide unpleasant results such as low value (grayish) restorations that often requires reintervention. A precise step-by-step procedure is therefore mandatory to provide the proper shade at the correct place. There is therefore the need of some corrections and adjustments during the layer procedure in order to avoid errors in shade positioning that could affect final result. The authors present a case series (six clinical cases) treated with the proposed technique with up to five years follow-up.
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de Geus JL, Maran BM, Cabral KA, Dávila-Sánchez A, Tardem C, Barceleiro MO, Heintze SD, Reis A, Loguercio AD. Clinical Performance of Filled/Nanofilled Versus Nonfilled Adhesive Systems in Noncarious Cervical Lesions: A Systematic Review and Meta-analysis. Oper Dent 2021; 46:E34-E59. [PMID: 33529313 DOI: 10.2341/19-252-l] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/22/2020] [Indexed: 11/23/2022]
Abstract
CLINICAL RELEVANCE The use of filled adhesive systems does not influence the clinical performance of the adhesive restoration in noncarious cervical lesions. SUMMARY
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Adhesion of Flowable Resin Composites in Simulated Wedge-Shaped Cervical Lesions: An In Vitro Pilot Study. APPLIED SCIENCES-BASEL 2021. [DOI: 10.3390/app11073173] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
The resin composite restoration of non-carious cervical lesions (NCCLs) still faces some drawbacks mostly related to the quality of the marginal seal. This study attempts to evaluate the adhesive capacities of two flowable and two conventional hybrid resin composite restorations of NCCLs having two types of cervical margins. Our null hypothesis assumes the same adhesive behavior of different materials. The relative composition of dental–restoration structures was also measured. Thus, restored wedge-shaped cervical cavities were realized on both the buccal and oral surfaces of extracted teeth. After immersion in dye solution, sectioning of the teeth was performed. We proposed an optical microscopy method to quantify the dye penetration along the restoration–tooth interface and scanning electron microscopy (SEM) and energy-dispersive X-ray analysis (EDX) to evaluate the quality of the peripheral seal. The data obtained revealed an amount of dentinal microleakage for all tested materials, despite the favorable results of the restoration peripheral seal. Therefore, data from this study failed to reject the null hypothesis. The adhesion is not influenced by the position of cervical margins. The SEM revealed occasional disruptions of the adhesive interface. EDX sustains the qualitative compositions as provided by the manufacturers. Conclusions: The four experimental composites are recommended to restore NCCLs in clinic.
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Delgado AHS, Young AM. Modelling ATR-FTIR Spectra of Dental Bonding Systems to Investigate Composition and Polymerisation Kinetics. MATERIALS (BASEL, SWITZERLAND) 2021; 14:760. [PMID: 33562837 PMCID: PMC7915020 DOI: 10.3390/ma14040760] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/18/2021] [Revised: 02/01/2021] [Accepted: 02/03/2021] [Indexed: 02/07/2023]
Abstract
Component ratios and kinetics are key to understanding and optimising novel formulations. This warrants investigation of valid methods. Attenuated Total Reflectance Fourier Transform Infra-Red (ATR)-FTIR spectra of separate primers/adhesives were modelled using summed spectra of solvents (water, ethanol), methacrylate monomers (HEMA (hydroxyethyl methacrylate), Bis-GMA (bisphenol A glycidyl methacrylate), and 10-MDP (10-methacryloyloxydecyl dihydrogen phosphate)), and fillers, multiplied by varying fractions. Filler loads were obtained following their separation from the adhesives, by analysing three repetitions (n = 3). Spectral changes during light exposure at 37 °C (20 s, LED 1100-1330 mW/cm2) were used to determine polymerisation kinetics (n = 3). Independent samples T-test was used for statistical analysis (significance level of 5%). FTIR modelling suggested a primer solvent percentage of OBFL (Optibond FL) (30%) was half that of CFSE (Clearfil SE 2) (60%). OBFL included ethanol and water, while CFSE included only water. Monomer peaks were largely those of HEMA with lower levels of phosphate monomers. OBFL/CFSE adhesive model spectra suggested that both contained equal volumes of Bis-GMA/HEMA, with CFSE having 10-MDP. Filler levels and spectra from OBFL (48 wt.%) and CFSE (5 wt.%) were different. Both systems reached a 50% conversion rate within seconds of light exposure. The final conversion for OBFL (74 ± 1%) was lower compared to CFSE (79 ± 2%) (p < 0.05). ATR-FTIR is a useful method to investigate relative levels of main components in bonding systems and their polymerisation kinetics. Such information is valuable to understanding such behaviour.
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Affiliation(s)
- António HS Delgado
- Division of Biomaterials & Tissue Engineering, UCL Eastman Dental Institute, London NW3 2PF, UK;
- Clinical Research Unit, Centro de Investigação Interdisciplinar Egas Moniz (CiiEM), Instituto Universitário Egas Moniz (IUEM), 2829-511 Caparica, Portugal
| | - Anne M. Young
- Division of Biomaterials & Tissue Engineering, UCL Eastman Dental Institute, London NW3 2PF, UK;
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Burrer P, Dang H, Par M, Attin T, Tauböck TT. Effect of Over-Etching and Prolonged Application Time of a Universal Adhesive on Dentin Bond Strength. Polymers (Basel) 2020; 12:E2902. [PMID: 33287394 PMCID: PMC7761786 DOI: 10.3390/polym12122902] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2020] [Revised: 12/01/2020] [Accepted: 12/02/2020] [Indexed: 11/28/2022] Open
Abstract
This study investigated the effect of over-etching and prolonged application time of a universal adhesive on dentin bond strength. Ninety extracted human molars were ground to dentin and randomly allocated into nine groups (G1-9; n = 10 per group), according to the following acid etching and adhesive application times. In the control group (G1), phosphoric acid etching was performed for 15 s followed by application of the universal adhesive Scotchbond Universal (3M) for 20 s, as per manufacturer's instructions. In groups G2-5, both the etching and adhesive application times were either halved, doubled, quadrupled, or increased eightfold. In groups G6-9, etching times remained the same as in G2-5 (7.5 s, 30 s, 60 s, and 120 s, respectively), but the adhesive application time was set at 20 s as in the control group (G1). Specimens were then restored with a nanofilled composite material and subjected to microtensile bond strength testing. Bond strength data were statistically analyzed by ANOVA and Tukey's post-hoc tests (α = 0.05). The relationship of bond strength with etching and adhesive application time was examined using linear regression analysis. Treatment of dentin with halved phosphoric acid etching and adhesive application times (G2) resulted in a significant bond strength decrease compared to the control group (G1) and all other test groups, including the group with halved acid etching, but 20 s of adhesive application time (G6). No significant differences in bond strength were found for groups with multiplied etching times and an adhesive application time of 20 s or more, when compared to the control group (G1). In conclusion, a universal adhesive application time of at least 20 s is recommended when bonding to over-etched dentin.
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Affiliation(s)
- Phoebe Burrer
- Clinic of Conservative and Preventive Dentistry, Center for Dental Medicine, University of Zurich, Plattenstrasse 11, 8032 Zurich, Switzerland; (H.D.); (T.A.); (T.T.T.)
| | - Hoang Dang
- Clinic of Conservative and Preventive Dentistry, Center for Dental Medicine, University of Zurich, Plattenstrasse 11, 8032 Zurich, Switzerland; (H.D.); (T.A.); (T.T.T.)
| | - Matej Par
- Department of Endodontics and Restorative Dentistry, School of Dental Medicine, University of Zagreb, Gunduliceva 5, 10000 Zagreb, Croatia;
| | - Thomas Attin
- Clinic of Conservative and Preventive Dentistry, Center for Dental Medicine, University of Zurich, Plattenstrasse 11, 8032 Zurich, Switzerland; (H.D.); (T.A.); (T.T.T.)
| | - Tobias T. Tauböck
- Clinic of Conservative and Preventive Dentistry, Center for Dental Medicine, University of Zurich, Plattenstrasse 11, 8032 Zurich, Switzerland; (H.D.); (T.A.); (T.T.T.)
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Perdigão J, Araujo E, Ramos RQ, Gomes G, Pizzolotto L. Adhesive dentistry: Current concepts and clinical considerations. J ESTHET RESTOR DENT 2020; 33:51-68. [PMID: 33264490 DOI: 10.1111/jerd.12692] [Citation(s) in RCA: 56] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2020] [Accepted: 11/16/2020] [Indexed: 01/07/2023]
Abstract
OBJECTIVES To address contemporary concepts in adhesive dental materials with emphasis on the evidence behind their clinical use. OVERVIEW Adhesive dentistry has undergone major transformations within the last 20 years. New dental adhesives and composite resins have been launched with special focus on their user-friendliness by reducing the number of components and/or clinical steps. The latest examples are universal adhesives and universal composite resins. While clinicians prefer multipurpose materials with shorter application times, the simplification of clinical procedures does not always result in the best clinical outcomes. This review summarizes the current evidence on adhesive restorative materials with focus on universal adhesives and universal composite resins. CONCLUSIONS (a) Although the clinical behavior of universal adhesives has exceeded expectations, dentists still need to etch enamel to achieve durable restorations; (b) there is no clinical evidence to back some of the popular adjunct techniques used with dental adhesives, including glutaraldehyde-based desensitizers and matrix metalloproteinase inhibitors; and (c) the color adaptation potential of new universal composite resins has simplified their clinical application by combining multiple shades without using different translucencies of the same shade. CLINICAL SIGNIFICANCE New adhesive restorative materials are easier to use than their predecessors, while providing excellent clinical outcomes without compromising the esthetic quality of the restorations.
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Affiliation(s)
- Jorge Perdigão
- Department of Restorative Sciences, Division of Operative Dentistry, University of Minnesota, Minneapolis, Minnesota, USA
| | - Edson Araujo
- Department of Comprehensive Care, School of Dentistry, Federal University of Santa Catarina, Florianópolis, Santa Catarina, Brazil
| | - Renato Q Ramos
- Department of Operative Dentistry, School of Dentistry, Federal University of Santa Catarina, Florianópolis, Santa Catarina, Brazil
| | - George Gomes
- George Gomes Dental Center, Oeiras, Lisbon, Portugal
| | - Lucas Pizzolotto
- Department of Dental Materials, Faculty of Dental Sciences, Federal University of Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil
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Perdigão J. Current perspectives on dental adhesion: (1) Dentin adhesion - not there yet. JAPANESE DENTAL SCIENCE REVIEW 2020; 56:190-207. [PMID: 34188727 PMCID: PMC8216299 DOI: 10.1016/j.jdsr.2020.08.004] [Citation(s) in RCA: 97] [Impact Index Per Article: 24.3] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2020] [Accepted: 08/24/2020] [Indexed: 12/11/2022] Open
Abstract
The essential goal of any adhesive restoration is to achieve a tight and long-lasting adaptation of the restorative material to enamel and dentin. The key challenge for new dental adhesives is to be simultaneously effective on two dental substrates of conflicting nature. Some barriers must be overcome to accomplish this objective. While bonding to enamel by micromechanical interlocking of resin tags within the array of microporosities in acid-etched enamel can be reliably achieved and can effectively seal the restoration margins against leakage, bonding effectively and durably to organic and humid dentin is the most puzzling task in adhesive dentistry. Much of the research and development of dental adhesives has focused on making the clinical procedure more user-friendly by reducing the number of bottles and/or steps. Although clinicians certainly prefer less complicated and more versatile adhesive materials, there is a trade-off between simplification of dental adhesives and clinical outcomes. Likewise, new materials are launched with claims of being novel and having special properties without much supporting evidence. This review article discusses dental adhesion acknowledging pioneer work in the field, highlights the substrate as a major challenge to obtain durable adhesive restorations, as well as analyzes the three adhesion strategies and their shortcomings. It also reviews the potential of chemical/ionic dental adhesion, discusses the issue of extensively published laboratory research that does not translate to clinical relevance, and leaves a few thoughts in regard to recent research that may have implications for future adhesive materials.
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Affiliation(s)
- Jorge Perdigão
- Professor, University of Minnesota, Department of Restorative Sciences, 515 SE Delaware St, 8-450 Moos Tower, Minneapolis, MN 55455, USA
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Comparison between Shear Bond Strength of Er:YAG and Er,Cr:YSGG Lasers-Assisted Dentinal Adhesion of Self-Adhering Resin Composite: An Ex Vivo Study. Dent J (Basel) 2020; 8:dj8030066. [PMID: 32630313 PMCID: PMC7558720 DOI: 10.3390/dj8030066] [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: 05/15/2020] [Revised: 06/25/2020] [Accepted: 06/27/2020] [Indexed: 11/30/2022] Open
Abstract
(1) Background: Bonding composite to tooth structure is still evolving with a substitute for phosphoric acid being the main challenge. Lately, a self-adhering composite (SAC) was developed, promising to simplify bonding to tooth structure. Unfortunately, retention especially to dentin, was not as good as the gold standard three steps bonding system. During the last 2 decades, lasers were used to enhance shear bond strength of composite to tooth structure. However, the literature provided limited information regarding laser efficiency in the immediate, as well as the long term, adhesion success of SACs to dentin. The purpose of our study was to define the optimal irradiation conditions to improve the adhesion of self-adhering flowable resin composite to dentin exposed to Er:YAG and Er,Cr:YSGG laser irradiation. (2) Methods: Seventy-two freshly extracted human third molars, prepared to have flat dentinal surfaces, were randomly divided into three groups (n = 24) including a control group (Group 1) in which dentin was left without laser irradiation. The other two groups (Group 2 and 3) received standardized irradiation at a speed of 1 mm/second with Er:YAG (60 mJ; SSP mode = 50 μs; 10 Hz; fluency of 9.4 J/cm2; beam diameter: 0.9 mm; air 6 mL/min; and water 4 mL/min), and Er,Cr:YSGG: 1.5 W; fluency of 17.8 J/cm2; turbo handpiece with MX5 short insert; 20 Hz under air/water spray (65% air, 55% water). Self-adhering flowable resin was applied to dentin in all groups. Half of the specimens were stored in water for 24 h while the other half underwent 3000 thermal cycles. Later, all specimens received a shear bond strength test. Fracture observation was done first under a stereomicroscope then by using a scanning electron microscope. (3) Results: The mean values of shear bond strength for both laser-treated dentin groups (Er:YAG laser: 13.10 ± 1.291, and Er,Cr:YSGG: 14.04 ± 5.233) were higher than in the control group 1 (8.355 ± 2.297) before thermocycling. After thermocycling, shear bond strength decreased in all groups as follows: 10.03 ± 1.503, 10.53 ± 2.631, and 02.75 ± 1.583 for Er:YAG, Er,Cr:YSGG, and nonirradiated dentin, respectively. Shear bond strength values showed a significant difference between the control group (Group 1) and both lasers groups (Group 2 and 3). Statistical analysis of stereomicroscope observation revealed no significant difference between laser irradiation and failure mode (p < 0.136). SEM observation of the dentin surface in both laser-irradiated groups showed opened tubules, absence of smear layer as well as an increase of resin infiltration into dentinal tubules. (4) Conclusion: Er:YAG and Er,Cr:YSGG lasers enhance self-adhering flowable resin shear bond strength values and improve its longevity by eliminating the smear layer, opening dentinal tubules and increasing resin infiltration into the microstructure.
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Michelotti G, Niedzwiecki M, Bidjan D, Dieckmann P, Deari S, Attin T, Tauböck TT. Silane Effect of Universal Adhesive on the Composite-Composite Repair Bond Strength after Different Surface Pretreatments. Polymers (Basel) 2020; 12:E950. [PMID: 32325811 PMCID: PMC7240492 DOI: 10.3390/polym12040950] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2020] [Revised: 04/14/2020] [Accepted: 04/17/2020] [Indexed: 11/16/2022] Open
Abstract
This study investigated the impact of a separate silanization step on the repair bond strength of composite substrates using a universal adhesive after various mechanical surface treatments. Composite specimens were aged and exposed to the following mechanical roughening treatments: diamond bur abrasion, aluminum oxide sandblasting, or silica coating. The specimens were then either left untreated or conditioned with universal adhesive (Scotchbond Universal), or a silane coupling agent was applied before the use of the universal adhesive or a conventional adhesive (Optibond FL). The conditioned surfaces and fresh substrate (positive control group) were covered with repair composite, and microtensile bond strength testing was performed. The significantly highest bond strength was obtained in the positive control group. Repair bond strength of the universal adhesive applied after a separate silanization step was similar to that without prior silanization, independent of the mechanical surface treatment. Moreover, after silica coating, no significant differences in the repair bond strength were detected among the different adhesive treatments. In conclusion, a separate silanization step before surface conditioning with the universal adhesive does not enhance the repair bond strength. On silica-coated composite substrates, repair bond strength values of the universal adhesive were similar to those of the conventional adhesive.
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Affiliation(s)
- Gioia Michelotti
- Clinic of Conservative and Preventive Dentistry, Center for Dental Medicine, University of Zurich, 8032 Zurich, Switzerland; (M.N.); (D.B.); (P.D.); (S.D.); (T.A.); (T.T.T.)
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Magno MB, Jural LA, Pithon MM, Maia LC. Influence of Vestibular Bevel on the Success of Traumatized Teeth Restorations: Single-Blind Randomized Controlled Trial - Preliminary Results with 6-Months Follow-Up. PESQUISA BRASILEIRA EM ODONTOPEDIATRIA E CLÍNICA INTEGRADA 2020. [DOI: 10.1590/pboci.2020.127] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Affiliation(s)
| | | | - Matheus Melo Pithon
- Federal University of Rio de Janeiro, Brazil; Southwest Bahia State University, Brazil
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Kaczor K, Krasowski M, Lipa S, Sokołowski J, Nowicka A. How Do the Etching Mode and Thermomechanical Loading Influence the Marginal Integrity of Universal Adhesives? Oper Dent 2019; 45:306-317. [PMID: 31750802 DOI: 10.2341/19-002-l] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
OBJECTIVE This study evaluated the effect of etching mode and thermomechanical loading on universal adhesives. METHODS AND MATERIALS Two universal adhesives, Peak Universal and Adhese Universal, were used in two etching modes as the experimental groups: Peak Universal etch-and-rinse (PER), Peak Universal self-etch (PSE), Adhese Universal etch-and-rinse (AER), and Adhese Universal self-etch (ASE). Two adhesives considered gold standards were used as control groups: OptiBond FL (OER) was used as a control group for the etch-and-rinse (ER) mode, and Clearfil SE Bond (CSE) was used as a control group for the self-etch (SE) mode. Standardized class V cavities were created on the buccal and lingual surface in 30 extracted caries-free human third molars. Each adhesive and resin composite was applied according to the manufacturer's instructions. The specimens were subjected to thermomechanical loading (TML) immediately after the fillings were placed. Before and after TML, replicas and photographs of the fillings were performed and evaluated quantitatively and qualitatively. The Mann-Whitney U-test or Kruskal-Wallis test was used for quantitative analyses, and Fisher exact test was used for qualitative analysis. RESULTS Adhese Universal achieved a significantly higher percentage of continuous margin in the enamel than Peak Universal for the two types of etching both before and after TML (except for the SE group after TML). In dentin, the greatest percentage of continuous margin was achieved for Adhese Universal in the ER group (100%) before TML and for both universal adhesives in the SE groups (61%) after TML. For both etching modes and both time points, Adhese Universal had a greater percentage of continuous margin than Peak Universal for the whole margin. For the ER approach, significant differences were observed both before and after TML, and for the SE approach, significant differences were observed before TML. TML did not cause a significant decrease in the percentage of continuous margin in the enamel, but the results were the opposite in dentin. A qualitative assessment using World Dental Federation criteria did not show statistically significant differences between the groups. CONCLUSIONS Scanning electron microscope assessment of marginal integrity showed that the evaluated factors such as etching mode and TML significantly influenced the marginal integrity of the universal adhesives. The replica method shows that laboratory and clinical assessment methods complement each other and give a broader view of marginal integrity.
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Dutra-Correa M, Kiyan VH, Ciaramicoli MT, Pecorari V, Rodrigues FP, Coury Saraceni CH. Randomized clinical trial of four adhesion strategies: A 42 month study. Indian J Dent Res 2019; 30:487-495. [PMID: 31745040 DOI: 10.4103/ijdr.ijdr_466_16] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
Context The adhesives clinical effectiveness has been extensively reported for noncarious cervical lesions (NCCLs). However, there is a lack of information about the adhesive systems strategies and their effect on NCCL restoration longevity. Aims This study aims to evaluate a 42-month performance of four dentin adhesive systems used for the restorative treatment of NCCLs. Settings and Design NCCLs were randomly divided into four groups: (1) Scotchbond multi-purpose (MP); 2: Single bond plus (SB); 3: Scotchbond SE (SE); and 4: Easy bond (EB). Subjects and Methods NCCLs (125) were randomly distributed: (1) MP; (2) SB; (3) SE; and (4) EB and were restored with a nanofilled resin-composite, evaluated along 18-36-42 months. Statistical Analysis Used Kruskal-Wallis test: Comparison among the adhesive systems in each period. Friedman analysis: Comparison along the periods. Kaplan-Meier: Survival analysis. Results Baseline and 42-month retention (RET) rates (%) were 100/100 for MP; 100/94.74 for SB; 100/87.5 for SE; and 100/100 for EB. The cumulative failure percentage was 9.52% for MP, 9.52% SB, 15.8% SE, and 10% EB. Restorations survival was not dependent on the used adhesive type. Marginal adaptation (MA) was similar to each group, but EB presented noticeable marginal deterioration. Wear was noticed in the 3-step etch-and-rinse (MP) restorations evaluated after 42 months. For the EB, baseline and 18-month wear evaluation were statistically similar. After 36 and 42 months, wear was also similar for EB. Conclusions Adhesive systems showed similar performance within most important adhesive bonding efficiency achievement parameters: RET, MA, interfacial staining, recurrent caries, and postoperative sensitivity evaluated during 42 months.
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Affiliation(s)
- Maristela Dutra-Correa
- Department of Operative Dentistry, Postgraduate Program in Dentistry, Paulista University, São Paulo, SP, Brazil
| | - Vanessa Harumi Kiyan
- Department of Operative Dentistry, Postgraduate Program in Dentistry, Paulista University, São Paulo, SP, Brazil
| | - Marcia Tonetti Ciaramicoli
- Department of Operative Dentistry, Postgraduate Program in Dentistry, Paulista University, São Paulo, SP, Brazil
| | - Vanessa Pecorari
- Department of Operative Dentistry, Postgraduate Program in Dentistry, Paulista University, São Paulo, SP, Brazil
| | - Flávia Pires Rodrigues
- Department of Operative Dentistry, Postgraduate Program in Dentistry, Paulista University, São Paulo, SP, Brazil
| | - Cintia Helena Coury Saraceni
- Department of Operative Dentistry, Postgraduate Program in Dentistry, Paulista University, São Paulo, SP, Brazil
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Clinical and OCT outcomes of a universal adhesive in a randomized clinical trial after 12 months. J Dent 2019; 90:103200. [DOI: 10.1016/j.jdent.2019.103200] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2019] [Revised: 08/21/2019] [Accepted: 09/21/2019] [Indexed: 02/06/2023] Open
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Yao C, Ahmed MH, Yoshihara K, Mercelis B, Parise Gré C, Van Landuyt KL, Huang C, Van Meerbeek B. Bonding to enamel using alternative Enamel Conditioner/etchants. Dent Mater 2019; 35:1415-1429. [DOI: 10.1016/j.dental.2019.07.022] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2019] [Revised: 07/14/2019] [Accepted: 07/15/2019] [Indexed: 10/26/2022]
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Caneppele TMF, Meirelles LCF, Rocha RS, Gonçalves LL, Ávila DMS, Gonçalves SEDP, Bresciani E. A 2-year clinical evaluation of direct and semi-direct resin composite restorations in non-carious cervical lesions: a randomized clinical study. Clin Oral Investig 2019; 24:1321-1331. [PMID: 31297659 DOI: 10.1007/s00784-019-03011-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2019] [Accepted: 07/03/2019] [Indexed: 11/29/2022]
Abstract
OBJECTIVES The purpose of this study was to evaluate the 2-year success of resin composite restorations in non-carious cervical lesions (NCCLs) using the direct or semi-direct techniques. MATERIALS AND METHODS Thirty volunteers presenting with at least two NCCLs were included. Each participant received one restoration using the direct technique and the other using the semi-direct technique, totaling 60 restorations. Time for completing the treatment was computed. Assessments at baseline, 7 days, and 6, 12, and 24 months were performed using the modified United States Public Health Service criteria. Descriptive analysis was reported as a percentage of successful treatments. For inferential analysis, the Student t test was used to evaluate the differences between extension, depth, and time. The chi-square/Fisher tests were used to compare treatment success after each period (α = 0.05). The results were evaluated by using the Kaplan-Meier survival analysis. RESULTS Differences were detected regarding mean ± standard deviation time, in which direct and semi-direct procedures were accomplished in 21.8 (± 14.5) and 35.3 (± 19.9) min, respectively. Of the 60 restorations placed, 7 failed in the direct group while 8 failed in the semi-direct group up to 2 years. No differences were detected between restorative protocols. The cumulative survival was 88.5% and 88.4% for the direct technique and semi-direct techniques after 24 months, respectively. CONCLUSION The tested restorative protocols present similar results for NCCLs within the studied periods. CLINICAL RELEVANCE The semi-direct technique exhibited clinical performance similar to direct technique for NCCL, demonstrating an alternative for restorations of these lesions.
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Affiliation(s)
- Taciana Marco Ferraz Caneppele
- GAPEC - Academic Group of Clinical Research, Department of Restorative Dentistry, Institute of Science and Technology, São Paulo State University (UNESP), Av. Eng. Francisco José Longo, no. 777, São José dos Campos, São Paulo, 12245-000, Brazil.
| | - Laura Célia Fernandes Meirelles
- GAPEC - Academic Group of Clinical Research, Department of Restorative Dentistry, Institute of Science and Technology, São Paulo State University (UNESP), Av. Eng. Francisco José Longo, no. 777, São José dos Campos, São Paulo, 12245-000, Brazil
| | - Rafael Santos Rocha
- GAPEC - Academic Group of Clinical Research, Department of Restorative Dentistry, Institute of Science and Technology, São Paulo State University (UNESP), Av. Eng. Francisco José Longo, no. 777, São José dos Campos, São Paulo, 12245-000, Brazil
| | - Lucélia Lemes Gonçalves
- GAPEC - Academic Group of Clinical Research, Department of Restorative Dentistry, Institute of Science and Technology, São Paulo State University (UNESP), Av. Eng. Francisco José Longo, no. 777, São José dos Campos, São Paulo, 12245-000, Brazil
| | - Daniele Mara Silva Ávila
- GAPEC - Academic Group of Clinical Research, Department of Restorative Dentistry, Institute of Science and Technology, São Paulo State University (UNESP), Av. Eng. Francisco José Longo, no. 777, São José dos Campos, São Paulo, 12245-000, Brazil
| | - Sérgio Eduardo de Paiva Gonçalves
- GAPEC - Academic Group of Clinical Research, Department of Restorative Dentistry, Institute of Science and Technology, São Paulo State University (UNESP), Av. Eng. Francisco José Longo, no. 777, São José dos Campos, São Paulo, 12245-000, Brazil
| | - Eduardo Bresciani
- GAPEC - Academic Group of Clinical Research, Department of Restorative Dentistry, Institute of Science and Technology, São Paulo State University (UNESP), Av. Eng. Francisco José Longo, no. 777, São José dos Campos, São Paulo, 12245-000, Brazil
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Decha N, Talungchit S, Iawsipo P, Pikulngam A, Saiprasert P, Tansakul C. Synthesis and characterization of new hydrolytic-resistant dental resin adhesive monomer HMTAF. Des Monomers Polym 2019; 22:106-113. [PMID: 31143093 PMCID: PMC6522974 DOI: 10.1080/15685551.2019.1615789] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2018] [Accepted: 05/02/2019] [Indexed: 02/02/2023] Open
Abstract
Hydrolytic and enzymatic degradation of resin adhesives over time has been mainly attributed to secondary caries formation of methacrylate-based tooth-colored resin-based composite restorations. Ability of resin adhesive monomers to infiltrate into demineralized dentin forming stiff polymer matrix and potentially bonding to tooth structure is also a crucial property. The only commercially available antibacterial monomer, 12-methacryloyloxydodecyl pyridinium bromide (MDPB), is a quaternary ammonium methacrylate. This methacrylate monomer undergoes hydrolytic degradation, and could not bond to tooth structure. In this study, a new hydrolytic resistant monomer HMTAF was synthesized. It is methacrylamide-based monomer that, unlike methacrylate, is highly resistant to hydrolysis. Its molecular structure has particular functional groups; quaternary ammonium fluoride salt with potential antibacterial fluoride-releasing activity, hydroxyl and amide group with hydrogen bonding potential to dentin collagen. Hydroxyl group also increases monomer hydrophilicity for better penetration into water-saturated dentin and sufficient resin-dentin bond. The synthesized HMTAF and its polymer showed no hydrolytic degradation in acidic environment, while MDPB and its polymer were partially decomposed under this challenge. The conversion of monomer HMTAF to polymer was illustrated by FT-IR. The results indicated that HMTAF is highly resistant to hydrolysis, polymerizable and non-cytotoxic to Vero cell lines. It is a potential monomer to be incorporated into resin adhesives for improving hydrolytic and enzymatic resistance.
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Affiliation(s)
- Nattawut Decha
- Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, Prince of Songkla University, Hat Yai, Thailand
| | - Supitcha Talungchit
- Department of Conservative Dentistry, Faculty of Dentistry, Prince of Songkla University, Hat Yai, Thailand
| | - Panata Iawsipo
- Department of Biochemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, Burapha University, Chonburi, Thailand
| | - Arthit Pikulngam
- Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, Prince of Songkla University, Hat Yai, Thailand
| | - Piangkwan Saiprasert
- Department of Conservative Dentistry, Faculty of Dentistry, Prince of Songkla University, Hat Yai, Thailand
| | - Chittreeya Tansakul
- Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, Prince of Songkla University, Hat Yai, Thailand
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Abstract
This review highlights ceramic material options and their use. The newer high-strength ceramics in monolithic form have gained popularity despite the lack of long-term clinical data to support this paradigm shift. Although there are some encouraging clinical data available, there is a need to develop laboratory simulation models that can help predict long-term clinical performance for ceramic and adhesive cements.
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Affiliation(s)
- Robert R Seghi
- Division of Restorative and Prosthetic Dentistry, The Ohio State University College of Dentistry, 305 West 12th Avenue, Room 3005H, Columbus, OH 43210-1267, USA.
| | - Diana Leyva Del Rio
- Oral Biology, The Ohio State University College of Dentistry, 305 West 12th Avenue, Room 3037D, Columbus, OH 43210-1267, USA
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30
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Körner P, Sulejmani A, Wiedemeier DB, Attin T, Tauböck TT. Demineralized enamel reduces margin integrity of self-etch, but not of etch-and-rinse bonded composite restorations. Odontology 2018; 107:308-315. [DOI: 10.1007/s10266-018-0398-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2018] [Accepted: 10/26/2018] [Indexed: 10/27/2022]
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Reis A, de Geus JL, Wambier L, Schroeder M, Loguercio AD. Compliance of Randomized Clinical Trials in Noncarious Cervical Lesions With the CONSORT Statement: A Systematic Review of Methodology. Oper Dent 2018; 43:E129-E151. [DOI: 10.2341/17-060-l] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
SUMMARY
The literature was reviewed to evaluate the compliance of randomized clinical trials (RCTs) with the CONsolidated Standards of Reporting Trials (CONSORT ) and the risk of bias of these studies through the Cochrane Collaboration risk of bias tool (CCRT). RCTs were searched at Cochrane Library, PubMed, and other electronic databases to find studies about adhesive systems for cervical lesions. The compliance of the articles with CONSORT was evaluated using the following scale: 0 = no description, 1 = poor description, and 2 = adequate description. Descriptive analyses about the number of studies by journal, follow-up period, country, and quality assessments were performed with CCRT for assessing risk of bias in RCTs. One hundred thirty-eight RCTs were left for assessment. More than 30% of the studies received scores of 0 or 1. Flow chart, effect size, allocation concealment, and sample size were more critical items, with 80% receiving a score of 0. The overall CONSORT score for the included studies was 15.0 ± 4.8 points, which represents 46.9% of the maximum CONSORT score. A significant difference among countries was observed (p<0.001), as well as range of year (p<0.001). Only 4.3% of the studies were judged as at low risk; 36.2% were classified as having unclear risk and 59.4% as having high risk of bias. The adherence of RCTs evaluating adhesive systems to the CONSORT is low with unclear/high risk of bias.
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Affiliation(s)
- A Reis
- Alessandra Reis, DDS, PhD, professor, Restorative Dentistry, Universidade Estadual de Ponta Grossa, Ponta Grossa, PR, Brazil
| | - JL de Geus
- Juliana L de Geus, MS, PhD, professor, School of Dentistry, School Paulo Picanço, Fortaleza, Ceará, Brazil and Department of Restorative Dentistry, Guairacá Faculty, Guarapuava, Paraná, Brazil
| | - L Wambier
- Leticia Wambier, Restorative Dentistry, Universidade Estadual de Ponta Grossa, Ponta Grossa, PR, Brazil and professor, Graduate Program in Clinical Dentistry, University of Positivo, Curitiba, Paraná, Brazil
| | - M Schroeder
- Marcos Schroeder, DDS, PhD, professor, Prosthodontics and Dental Materials, Federal University of Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - AD Loguercio
- Alessandro D. Loguercio, DDS, MS, PhD, professor, Restorative Dentistry, State University of Ponta Grossa, Ponta Grossa, Parana, Brazil
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32
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Cieplik F, Scholz KJ, Tabenski I, May S, Hiller KA, Schmalz G, Buchalla W, Federlin M. Flowable composites for restoration of non-carious cervical lesions: Results after five years. Dent Mater 2017; 33:e428-e437. [PMID: 29102158 DOI: 10.1016/j.dental.2017.09.012] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2017] [Revised: 08/21/2017] [Accepted: 09/22/2017] [Indexed: 10/18/2022]
Abstract
OBJECTIVES To evaluate the clinical performance of two flowable composites for restoration of Class-V non-carious cervical lesions (NCCLs), one with novel (N'Durance® Dimer Flow, Septodont; ND) and one with modified conventional matrix composition (Filtek™ Supreme XTE Flow, 3M-ESPE; FS). The null hypothesis was that both flowable composite materials perform equally regarding clinical quality and survival. METHODS 50 patients received one ND and one FS restoration of NCCLs in premolars using Clearfil Protect Bond (Kuraray) as an adhesive without additional selective enamel etching. Restorations were evaluated at baseline (BL), after 30 and 60 months employing selected original FDI criteria and refined FDI criteria by separate evaluation of enamel and dentine margins. Non-parametric statistical analyses and χ2 tests were applied (α=0.05). RESULTS 38 patients with both restorations under risk were available for the 60-mo recall (recall rate: 76%). At 60-mo, 94.7% of ND and 84.2% of FS restorations were rated clinically acceptable. No significant differences for all selected FDI criteria were recorded between ND and FS at each examination time point except for the criteria surface lustre at 60-mo, where FS showed significantly better results. No significant differences over time could be detected for both materials. There was a trend for more deterioration along the enamel margins than along the dentine margins (criteria marginal staining and marginal adaptation). SIGNIFICANCE Within the limitations of the study, the null hypothesis that materials perform equally could not be rejected. Both flowable composites performed similarly regarding clinical performance.
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Affiliation(s)
- Fabian Cieplik
- Department of Conservative Dentistry and Periodontology, University Medical Center Regensburg, Regensburg, Germany.
| | - Konstantin J Scholz
- Department of Conservative Dentistry and Periodontology, University Medical Center Regensburg, Regensburg, Germany
| | - Isabelle Tabenski
- Department of Conservative Dentistry and Periodontology, University Medical Center Regensburg, Regensburg, Germany
| | - Sabine May
- Department of Conservative Dentistry and Periodontology, University Medical Center Regensburg, Regensburg, Germany; Private Practice, Amberg, Germany
| | - Karl-Anton Hiller
- Department of Conservative Dentistry and Periodontology, University Medical Center Regensburg, Regensburg, Germany
| | - Gottfried Schmalz
- Department of Conservative Dentistry and Periodontology, University Medical Center Regensburg, Regensburg, Germany; Department of Preventive, Restorative and Pediatric Dentistry, School of Dental Medicine, University of Bern, Bern, Switzerland
| | - Wolfgang Buchalla
- Department of Conservative Dentistry and Periodontology, University Medical Center Regensburg, Regensburg, Germany
| | - Marianne Federlin
- Department of Conservative Dentistry and Periodontology, University Medical Center Regensburg, Regensburg, Germany
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Zeola LF, Pereira FA, Machado AC, Reis BR, Kaidonis J, Xie Z, Townsend GC, Ranjitkar S, Soares PV. Effects of non-carious cervical lesion size, occlusal loading and restoration on biomechanical behaviour of premolar teeth. Aust Dent J 2017; 61:408-417. [PMID: 26671647 DOI: 10.1111/adj.12391] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/06/2015] [Indexed: 11/28/2022]
Abstract
BACKGROUND Information on fracture biomechanics has implications in materials research and clinical practice. The aim of this study was to analyse the influence of non-carious cervical lesion (NCCL) size, restorative status and direction of occlusal loading on the biomechanical behaviour of mandibular premolars, using finite element analysis (FEA), strain gauge tests and fracture resistance tests. METHODS Ten buccal cusps were loaded on the outer and inner slopes to calculate the strain generated cervically. Data were collected for healthy teeth at baseline and progressively at three lesion depths (0.5 mm, 1.0 mm and 1.5 mm), followed by restoration with resin composite. The magnitude and distribution of von Mises stress and maximum principal stress were simulated at all stages using FEA, and fracture strength was also determined (n = 7 per group). RESULTS There were significant effects of the lesion size and loading directions on stress, strain and fracture resistance (p < 0.05). Fracture resistance values decreased with increase in lesion size, but returned to baseline with restorations. CONCLUSIONS Combined assessment of computer-based and experimental techniques provide an holistic approach to characterize the biomechanical behaviour of teeth with both unrestored and restored NCCLs.
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Affiliation(s)
- L F Zeola
- Operative Dentistry and Dental Materials Department, School of Dentistry, Federal University of Uberlandia, Brazil
| | - F A Pereira
- Operative Dentistry and Dental Materials Department, School of Dentistry, Federal University of Uberlandia, Brazil
| | - A C Machado
- Operative Dentistry and Dental Materials Department, School of Dentistry, Federal University of Uberlandia, Brazil
| | - B R Reis
- Federal University of Uberlandia, Brazil
| | - J Kaidonis
- School of Mechanical Engineering, The University of Adelaide, South Australia, Australia
| | - Z Xie
- School of Dentistry, The University of Adelaide, South Australia, Australia
| | - G C Townsend
- School of Mechanical Engineering, The University of Adelaide, South Australia, Australia
| | - S Ranjitkar
- School of Mechanical Engineering, The University of Adelaide, South Australia, Australia
| | - P V Soares
- Operative Dentistry and Dental Materials Department, School of Dentistry, Federal University of Uberlandia, Brazil
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Kim D, Ahn SY, Kim J, Park SH. Interrater and intrarater reliability of FDI criteria applied to photographs of posterior tooth-colored restorations. J Prosthet Dent 2017; 118:18-25.e4. [DOI: 10.1016/j.prosdent.2016.10.004] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2016] [Revised: 10/01/2016] [Accepted: 10/03/2016] [Indexed: 11/25/2022]
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Borgia E, Baron R, Borgia JL. Quality and Survival of Direct Light-Activated Composite Resin Restorations in Posterior Teeth: A 5- to 20-Year Retrospective Longitudinal Study. J Prosthodont 2017; 28:e195-e203. [PMID: 28513897 DOI: 10.1111/jopr.12630] [Citation(s) in RCA: 50] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/18/2017] [Indexed: 12/27/2022] Open
Abstract
PURPOSE To analyze the clinical success of direct light-activated composite resin restorations in posterior teeth. The quality of the margins and occlusal surfaces were evaluated, as well as their survival, according to their extensions and locations. The clinical performance of posterior composite resin restorations with different compositions were compared. All restorations were performed by the first author in his private practice, in a 5- to 20-year period. MATERIALS AND METHODS Several types of composite resins, provided by different manufacturers, were placed in posterior teeth, after isolation with rubber dams. To be included in the study, the restorations had to have been in function for at least 5 years and had to have been placed between October 1993 and October 2008 by the first author. The established failure criteria were: tooth and/or restoration fracture, secondary caries, endodontic treatment, or tooth loss. Included patients must have been treated in the first author's office for at least 7 years and still in the practice through 2013; all patients had complete dental arches. Patients with removable dental prostheses or disabilities, who had moved, or who had died were excluded. Of 210 patients who fulfilled the inclusion criteria, 138 randomly selected subjects were clinically examined between November 2013 and April 2014. Of these 138 patients, 61 had received 105 direct-light-activated composite resin restorations in posterior teeth, which met the inclusion criteria. Twenty-nine patients (47.5%) underwent annual maintenance therapy. The patient-based data collected from clinical exams and personal records were recorded on a specially designed form. Age, gender, period of clinical attendance, tooth preparation, location, size, quality and longevity of the restorations, restorative materials, adhesive systems, parafunctional habits, secondary caries, and maintenance therapy were the variables evaluated. Authors were blinded to the clinical assessments. Cohen's Kappa coefficient of the quality analysis of the margins and occlusal surfaces of the restorations ranged from 0.78 to 1. Data processing was performed using Epidat software, v3.1, developed by the Consellería de Sanidade de la Xunta de Galicia with the support of PAHO-WHO and SPSS software v13.0. If the number of complete values was too small, a Kaplan-Meier curve could not be used. Therefore the Fisher's exact test, Chi-square test, Kruskal-Wallis test, and Mann-Whitney non-parametric test were indicated to analyze significant differences. RESULTS At the time of the examinations, 103 (98%) restorations were in function, and 98 (95.1%) were rated as clinically successful. Two restorations failed (2%). The observed mean survival time of restorations that remained functional was 11 years and 7 months. CONCLUSIONS In the present report, direct light-activated composite resin restorations in posterior teeth showed a high clinical success rate and long-term mean survival time. These composite resins might be considered the material of choice to restore medium, extended, and in some clinical situations, large preparations in posterior teeth.
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Affiliation(s)
- Ernesto Borgia
- Postgraduate School, School of Dentistry, Montevideo, Uruguay
| | - Rosario Baron
- Department of Operative Dentistry, School of Dentistry, Montevideo, Uruguay
| | - Jose Luis Borgia
- Department of Prosthodontics, School of Dentistry, Montevideo, Uruguay
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Kim JH, Cho J, Lee Y, Cho BH. The Survival of Class V Composite Restorations and Analysis of Marginal Discoloration. Oper Dent 2017; 42:E93-E101. [DOI: 10.2341/16-186-c] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
SUMMARY
The aims of this retrospective clinical study were to analyze the longevity of class V composite restorations and compare the results obtained from clinical and laboratory evaluation of marginal discoloration. A total of 186 restorations were evaluated with modified US Public Health Service criteria. Longevity and associated variables were analyzed with the Kaplan-Meier method and a Cox proportional hazard model. Restorations with marginal discoloration were additionally evaluated using digital photographs and epoxy resin replicas under a stereomicroscope. The mean survival time was 15.0 years, with five- and 10-year survival rates of 95.5% and 83.1%, respectively. Z250 had a higher risk of failure (hazard ratio=7.01, 95% confidence interval=2.07-23.72) than Z100. In addition, the presence of occlusal wear facets and bleeding on probing were associated with an increased risk of failure of the restorations. However, the use of an adhesive system (Scotchbond Multi-Purpose or Clearfil SE Bond) did not affect the longevity of the restorations. The results of laboratory evaluation were significantly different from clinical evaluation (p<0.001, McNemar test). Among 55 restorations rated as Bravo in the clinical evaluation, 24 restorations (43.6%) were determined to have penetrating discoloration on laboratory evaluation. When evaluating aged composite restorations, surface refurbishment and the use of a microscope are recommended, which will be helpful in determining the need for timely repair or replacement.
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Affiliation(s)
- J-H Kim
- Jae-Hoon Kim, DDS, MSD, PhD, Department of Conservative Dentistry, Institute of Oral Health Science, Ajou University School of Medicine, Suwon, Korea
| | - J Cho
- Junho Cho, DDS, MS, Department of Dentistry, Seoul National University School of Dentistry, Seoul, Korea
| | - Y Lee
- Yunhee Lee, DDS, MS, Department of Conservative Dentistry, Seoul National University School of Dentistry, Seoul, Korea
| | - B-H Cho
- Junho Cho, DDS, MS, Department of Dentistry, Seoul National University School of Dentistry, Seoul, Korea
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May S, Cieplik F, Hiller KA, Buchalla W, Federlin M, Schmalz G. Flowable composites for restoration of non-carious cervical lesions: Three-year results. Dent Mater 2017; 33:e136-e145. [PMID: 28062127 DOI: 10.1016/j.dental.2016.12.009] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2016] [Accepted: 12/13/2016] [Indexed: 01/10/2023]
Abstract
OBJECTIVES To evaluate the clinical performance of two flowable composites for restoring Class-V non-carious cervical lesions (NCCLs), one with novel (ND; N'Durance® Dimer Flow, Septodont) and one with modified conventional matrix composition (FS; Filtek™ Supreme XTE Flow, 3M-ESPE). The null hypothesis was that both flowable composites perform equally regarding clinical quality and survival. METHODS 50 patients received one ND and one FS restoration of NCCLs in premolars using Clearfil Protect Bond (Kuraray) as an adhesive. Restorations were evaluated by two examiners at baseline (BL), 18 and 36 months employing FDI criteria. Non-parametric statistical analyses and χ2 tests were applied (α=0.05). RESULTS 48 patients with both restorations under risk participated in the 36-mo recall. One patient terminated participation after the 18-mo recall. One ND restoration failed at the 18-mo recall (fracture). One FS restoration failed during clinical examination at the 36-mo recall (debonding). 95.8% of restorations each were rated clinically acceptable at 36-mo. No significant differences for all selected FDI criteria were recorded between ND and FS at each examination time point except for the criteria surface staining at 36-mo and marginal staining at 18-mo and 36-mo, where FS showed significantly better results. For each material, no significant differences over time were detected, except for loss of surface lustre for FS (BL to 18 months). SIGNIFICANCE Within the limitations of the study, the null hypothesis that materials perform equally could not be rejected. Both flowable composites performed equally regarding survival and similarly regarding clinical performance.
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Affiliation(s)
- Sabine May
- Department of Conservative Dentistry and Periodontology, University Medical Center Regensburg, Regensburg, Germany; Private Practice, Amberg, Germany
| | - Fabian Cieplik
- Department of Conservative Dentistry and Periodontology, University Medical Center Regensburg, Regensburg, Germany.
| | - Karl-Anton Hiller
- Department of Conservative Dentistry and Periodontology, University Medical Center Regensburg, Regensburg, Germany
| | - Wolfgang Buchalla
- Department of Conservative Dentistry and Periodontology, University Medical Center Regensburg, Regensburg, Germany
| | - Marianne Federlin
- Department of Conservative Dentistry and Periodontology, University Medical Center Regensburg, Regensburg, Germany
| | - Gottfried Schmalz
- Department of Conservative Dentistry and Periodontology, University Medical Center Regensburg, Regensburg, Germany; Department of Preventive, Restorative and Pediatric Dentistry, School of Dental Medicine, University of Bern, Bern, Switzerland
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BORTOLOTTO T, MAST P, KREJCI I. Laser-prepared and bonding-filled fissure sealing: SEM and OCT analysis of marginal and internal adaptation. Dent Mater J 2017; 36:622-629. [DOI: 10.4012/dmj.2016-025] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Affiliation(s)
- Tissiana BORTOLOTTO
- Division of Cariology and Endodontology, University Clinic of Dental Medicine, University of Geneva
| | - Pascal MAST
- Division of Cariology and Endodontology, University Clinic of Dental Medicine, University of Geneva
| | - Ivo KREJCI
- Division of Cariology and Endodontology, University Clinic of Dental Medicine, University of Geneva
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The Effect of Energy Densities on the Shear Bond Strength of Self-Adhering Flowable Composite to Er:YAG Pretreated Dentin. BIOMED RESEARCH INTERNATIONAL 2016; 2016:6507924. [PMID: 27830151 PMCID: PMC5086511 DOI: 10.1155/2016/6507924] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/07/2016] [Accepted: 09/18/2016] [Indexed: 11/18/2022]
Abstract
Objective. To investigate the shear bond strength of self-adhering flowable resin composite, to dentin, after exposing it to Er:YAG laser radiation, at different energy densities. Materials and Methods. Sixty freshly extracted human third molars were randomly divided into five groups (n = 12). In the control group, dentin was left unirradiated, whereas, in the other four groups, dentin was irradiated with Er:YAG laser in noncontact mode (MSP mode = 100 µs; 10 Hz; beam diameter: 1.3 mm; speed of 1 mm/second; air 6 mL/min; and water 4 mL/min), and respectively, with the following level of energy (50 mJ, 60 mJ, 80 mJ, and 100 mJ). Then, self-adhering flowable resin composite was bonded to all prepared dentin surfaces. Shear bond strength (SBS) was applied and fractured surfaces were examined using scanning electron microscopy. Results. SBS values showed significant differences in 60 mJ (P < 0.05) compared to other groups. Morphological evaluation revealed tags or plugs in dentinal tubules, especially when 60 mJ and 80 mJ were used. All four groups tended to leave more residues on the dentin surface, than the control group. Conclusion. Er:YAG dentin irradiation may enhance SBS of the self-adhering flowable resin composite when it is used at the appropriate low level of energy density.
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Loomans B, Hilton T. Extended Resin Composite Restorations: Techniques and Procedures. Oper Dent 2016; 41:S58-S67. [DOI: 10.2341/15-212-lit] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
SUMMARY
This article gives an overview of the state of the art of different restorative treatment procedures and techniques needed for placing extended posterior resin composite restorations. Clinical aspects related to the procedure are discussed and reviewed based on the current literature, such as the use of proper adhesive restorative materials, use of liners and bases, moisture control, reconstruction of proximal contacts, extended resin composite restorations, and techniques to address restoring teeth with deep subgingival margins.
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Affiliation(s)
- B Loomans
- Bas Loomans, DDS, PhD, Radboud Institute for Molecular Life Sciences, Department of Dentistry, Radboud university medical center, Nijmegen, PO Box 9101, Nijmegen 6500 HB, The Netherlands
| | - T Hilton
- Thomas Hilton, DMD, MS, Department of Restorative Dentistry, Oregon Health and Science University, 2730 S.W. Moody Ave. Portland, OR 97201-0007, USA
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41
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Soares PV, Machado AC, Zeola LF, Souza PG, Galvão AM, Montes TC, Pereira AG, Reis BR, Coleman TA, Grippo JO. Loading and composite restoration assessment of various non-carious cervical lesions morphologies - 3D finite element analysis. Aust Dent J 2015; 60:309-16. [DOI: 10.1111/adj.12233] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/02/2014] [Indexed: 11/28/2022]
Affiliation(s)
- PV Soares
- NCCL Research Group; Operative Dentistry and Dental Materials Department; School of Dentistry; Federal University of Uberlândia; Campus Umuarama Uberlândia Minas Gerais Brazil
| | - AC Machado
- NCCL Research Group; Operative Dentistry and Dental Materials Department; School of Dentistry; Federal University of Uberlândia; Campus Umuarama Uberlândia Minas Gerais Brazil
| | - LF Zeola
- NCCL Research Group; Operative Dentistry and Dental Materials Department; School of Dentistry; Federal University of Uberlândia; Campus Umuarama Uberlândia Minas Gerais Brazil
| | - PG Souza
- NCCL Research Group; Operative Dentistry and Dental Materials Department; School of Dentistry; Federal University of Uberlândia; Campus Umuarama Uberlândia Minas Gerais Brazil
| | - AM Galvão
- NCCL Research Group; Operative Dentistry and Dental Materials Department; School of Dentistry; Federal University of Uberlândia; Campus Umuarama Uberlândia Minas Gerais Brazil
| | - TC Montes
- NCCL Research Group; Operative Dentistry and Dental Materials Department; School of Dentistry; Federal University of Uberlândia; Campus Umuarama Uberlândia Minas Gerais Brazil
| | - AG Pereira
- NCCL Research Group; Operative Dentistry and Dental Materials Department; School of Dentistry; Federal University of Uberlândia; Campus Umuarama Uberlândia Minas Gerais Brazil
| | - BR Reis
- NCCL Research Group; Operative Dentistry and Dental Materials Department; School of Dentistry; Federal University of Uberlândia; Campus Umuarama Uberlândia Minas Gerais Brazil
| | - TA Coleman
- Shaftsbury Medical Building; Shaftsbury Vermont USA
| | - JO Grippo
- Department of Biomedical Engineering; Western New England University; Springfield Massachusetts USA
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Kuramochi G, Borie E, Orsi IA, Del Sol M. Magnitude and distribution of stresses in composite resin and sound dentine interface with mechanical retentions. J Clin Exp Dent 2015; 7:e232-6. [PMID: 26155338 PMCID: PMC4483329 DOI: 10.4317/jced.52144] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2014] [Accepted: 12/28/2014] [Indexed: 11/06/2022] Open
Abstract
Background Adhesive systems are constantly subjected to mechanical and chemical stresses that negatively impact the integrity and durability of the dentine-adhesive interface. Despite the lack of evidence to support or reject the clinical indication for mechanical retention, the potential further contribution of these preparations to the behavior of the composite resin-sound dentine bond has been rarely addressed. The authors evaluated by finite element analysis the effect of mechanical retention on the magnitude and distribution of stresses in a composite resin-sound dentin bonding interface when subjected to tensile and shear forces. Material and Methods A three-dimensional model was created based on three cylindrical volumes representing the sound dentin, adhesive system, and composite resin. From this main model, two models were designed to simulate dentine bonding: 1) a model with no mechanical retention, which considered flat adhesion; and 2) a model with retention, which considered four hemispherical holes on the dentine surface. Both groups were subjected to linear static analysis under tensile and shear loading of 200N. Results At the model with retentions’ bonding interface under tensile and shear loading, a concentration of Von Mises equivalent stress was observed within the retentions, with a reduction of those stresses on the bonding boundary surface. Conclusions Additional mechanical retention increases the tensile strength of the sound dentin-composite resin bonding interface, promoting a decrease in the magnitude of the stresses and their redistribution under tensile and shear loading. Key words:Adhesion, composite resins, dentine, finite element analysis.
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Affiliation(s)
- Gisaku Kuramochi
- Department of Restorative Dentistry, School of Dentistry, Universidad Finis Terrae, Av. Pedro de Valdivia 1509, 7501015 Santiago, Chile ; PhD, Student of Doctoral Program in Medical Sciences, Medicine School, Manuel Montt 112, 4781176 Universidad de La Frontera, Temuco, Chile
| | - Eduardo Borie
- CIMOFIR, Research Centre, Dental School, Universidad de La Frontera, Manuel Montt 112, 4781176 Temuco, Chile ; Dental Materials and Prosthodontics Department, Ribeirão Preto Dental School, University of São Paulo, Av. do Café w/n, 14040904 Ribeirão Preto, SP, Brazil
| | - Iara-Augusta Orsi
- Dental Materials and Prosthodontics Department, Ribeirão Preto Dental School, University of São Paulo, Av. do Café w/n, 14040904 Ribeirão Preto, SP, Brazil
| | - Mariano Del Sol
- Department of Basic Sciences, Faculty of Medicine, Universidad de La Frontera, Av. Francisco Salazar 01145, 4811230 Temuco, Chile
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Pereira FA, Zeola LF, de Almeida Milito G, Reis BR, Pereira RD, Soares PV. Restorative material and loading type influence on the biomechanical behavior of wedge shaped cervical lesions. Clin Oral Investig 2015; 20:433-41. [PMID: 26159778 DOI: 10.1007/s00784-015-1523-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2014] [Accepted: 06/30/2015] [Indexed: 11/29/2022]
Abstract
OBJECTIVES To evaluate the influence of restorative materials used on the rehabilitation of MOD cavities and loading type, on biomechanical behavior of wedge-shaped (WS) lesions in endodontically treated maxillary premolars. The investigation was conducted by 3D finite element analysis (FEA) and strain gauge test. MATERIALS AND METHODS Six models were generated, with MOD cavities and endodontic treatment: A (MOD amalgam restoration), R (MOD composite restoration), AL (A + cervical lesion (L)), RL, ALR (A + cervical lesion restored with composite (LR)), and RLR. Each model underwent two compressive loading (100N): axial and oblique-45° angle to the long axis on the buccal cusp. The models were analyzed by von Mises criteria. For strain gauge test, 14 standardized maxillary premolars were treated according to the groups described for FEA. Two strain gauges were bonded on each sample submitted to compressive loading in a mechanical testing machine. RESULTS A presented higher stress concentration and strain values than R. Oblique loading promoted highest stress concentration and strain rates for all groups. ALR and RLR presented similar stress-strain distribution pattern when compared to A and R. CONCLUSION The interaction between MOD cavity restored with amalgam and oblique loading propitiated the highest stress concentration and strain values on cervical region and WS lesion. CLINICAL RELEVANCE The MOD cavity restored with composite resin is a better option than amalgam to improve the biomechanical behavior of wedge-shaped lesion, avoiding dental failure. In addition, the occlusal interferences must be removed, allowing homogeneous contact distribution and preventing WS lesion progression.
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Affiliation(s)
- Fabrícia Araújo Pereira
- Operative Dentistry and Dental Materials Department, Federal University of Uberlandia, Rua Republica do Piratini S/N Bloco 4LA Sala 37 Campus Umuarama, Uberlândia, Minas Gerais, 38405-325, Brazil
| | - Livia Fávaro Zeola
- Operative Dentistry and Dental Materials Department, Federal University of Uberlandia, Rua Republica do Piratini S/N Bloco 4LA Sala 37 Campus Umuarama, Uberlândia, Minas Gerais, 38405-325, Brazil
| | - Giovana de Almeida Milito
- Operative Dentistry and Dental Materials Department, Federal University of Uberlandia, Rua Republica do Piratini S/N Bloco 4LA Sala 37 Campus Umuarama, Uberlândia, Minas Gerais, 38405-325, Brazil
| | - Bruno Rodrigues Reis
- Operative Dentistry and Dental Materials Department, Federal University of Uberlandia, Rua Republica do Piratini S/N Bloco 4LA Sala 37 Campus Umuarama, Uberlândia, Minas Gerais, 38405-325, Brazil
| | - Rodrigo Dantas Pereira
- Department of Dentistry, United Universities of the North of Minas, Avenida Osmane Barbosa, 11111, Montes Claros, Minas Gerais, 39404-549, Brazil
| | - Paulo Vinícius Soares
- Operative Dentistry and Dental Materials Department, School of Dentistry, Federal University of Uberlandia, Rua Republica do Piratini S/N Bloco 4LA Sala 37 Campus Umuarama, Uberlândia, Minas Gerais, 38405-325, Brazil.
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Peumans M, De Munck J, Van Landuyt K, Van Meerbeek B. Thirteen-year randomized controlled clinical trial of a two-step self-etch adhesive in non-carious cervical lesions. Dent Mater 2015; 31:308-14. [DOI: 10.1016/j.dental.2015.01.005] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2014] [Revised: 12/30/2014] [Accepted: 01/07/2015] [Indexed: 01/30/2023]
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Benetti AR, Havndrup-Pedersen C, Honoré D, Pedersen MK, Pallesen U. Bulk-Fill Resin Composites: Polymerization Contraction, Depth of Cure, and Gap Formation. Oper Dent 2015; 40:190-200. [DOI: 10.2341/13-324-l] [Citation(s) in RCA: 140] [Impact Index Per Article: 15.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
SUMMARY
The bulk-filling of deep, wide dental cavities is faster and easier than traditional incremental restoration. However, the extent of cure at the bottom of the restoration should be carefully examined in combination with the polymerization contraction and gap formation that occur during the restorative procedure. The aim of this study, therefore, was to compare the depth of cure, polymerization contraction, and gap formation in bulk-fill resin composites with those of a conventional resin composite. To achieve this, the depth of cure was assessed in accordance with the International Organization for Standardization 4049 standard, and the polymerization contraction was determined using the bonded-disc method. The gap formation was measured at the dentin margin of Class II cavities. Five bulk-fill resin composites were investigated: two high-viscosity (Tetric EvoCeram Bulk Fill, SonicFill) and three low-viscosity (x-tra base, Venus Bulk Fill, SDR) materials. Compared with the conventional resin composite, the high-viscosity bulk-fill materials exhibited only a small increase (but significant for Tetric EvoCeram Bulk Fill) in depth of cure and polymerization contraction, whereas the low-viscosity bulk-fill materials produced a significantly larger depth of cure and polymerization contraction. Although most of the bulk-fill materials exhibited a gap formation similar to that of the conventional resin composite, two of the low-viscosity bulk-fill resin composites, x-tra base and Venus Bulk Fill, produced larger gaps.
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Affiliation(s)
- AR Benetti
- Ana R Benetti, DDS, MSc, PhD, assistant professor, Department of Odontology, University of Copenhagen, Copenhagen, Denmark
| | - C Havndrup-Pedersen
- Cæcilie Havndrup-Pedersen, undergraduate dental student, Department of Odontology, University of Copenhagen, Copenhagen, Denmark
| | - D Honoré
- Daniel Honoré, undergraduate dental student, Department of Odontology, University of Copenhagen, Copenhagen, Denmark
| | - MK Pedersen
- Maiken K Pedersen, undergraduate dental student, Department of Odontology, University of Copenhagen, Copenhagen, Denmark
| | - U Pallesen
- Ulla Pallesen, DDS, chief dental officer, Department of Odontology, University of Copenhagen, Copenhagen, Denmark
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Delbons FB, Perdigão J, Araujo E, Melo Freire CA, Caldas DD, Cardoso JL, Pagani M, Borges GA, Lima RB. Randomized clinical trial of four adhesion strategies in posterior restorations-18-month results. J ESTHET RESTOR DENT 2015; 27:107-17. [PMID: 25627581 DOI: 10.1111/jerd.12135] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
PURPOSE To evaluate the 18-month clinical performance of four adhesive strategies in posterior composite restorations placed in private practice. MATERIALS AND METHODS Upon approval by an institutional review board, 144 restorations were inserted in 45 subjects (average age = 32.6) to treat caries lesions or to replace existing restorations in vital molars and premolars. The adhesives OptiBond FL (three-step etch-and-rinse), OptiBond SOLO Plus (two-step etch-and-rinse), OptiBond XTR (two-step self-etch), and OptiBond All-in One (one-step self-etch) were applied as per manufacturer's (Kerr Co.) instructions followed by a nanofilled resin composite (Filtek Z350XT, 3M ESPE) under rubber dam isolation. Restorations were evaluated at baseline and at 18 months using United States Public Health Service (USPHS)-modified criteria and high-resolution digital photographs. Statistical analyses included the McNemar and the Mann-Whitney non-parametric tests (p < 0.05). RESULTS A total of 137 restorations were evaluated after 18 months. The number of alfa ratings did not change significantly from baseline to 18 months for any of the adhesion strategies. When the 18-month evaluation criteria were pooled by pairs of adhesives, none of the adhesives resulted in a significantly different number of alfa ratings for any of the criteria compared with the other adhesives. CONCLUSION Bonding strategy did not influence the clinical performance of posterior composite restorations under the clinical conditions used in this study. CLINICAL SIGNIFICANCE When used in ideal clinical conditions, the composition of current dentin adhesives may be more clinically relevant than their adhesion strategy.
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Effect of microparticulate silver addition in dental adhesives on secondary caries in vitro. Clin Oral Investig 2015; 19:1673-81. [PMID: 25613488 DOI: 10.1007/s00784-014-1396-x] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2014] [Accepted: 12/23/2014] [Indexed: 02/06/2023]
Abstract
OBJECTIVES The aim of the present study was evaluate the effect of microparticulate silver additions in adhesives on secondary caries formation using an artificial mouth model. MATERIALS AND METHODS One hundred eight intact human third molars received standardized Class-V resin composite restorations (Filtek Supreme XTE bonded with Syntac, Scotchbond 1 XT, Futurabond M). Adhesives were charged with different amounts of microparticulate silver (0 %/0.1 %/0.5 %). After storage for 4 weeks at 37 °C, teeth were subjected to 10,000 thermocycles (+5 °C and +55 °C), and impressions were taken. Streptococcus mutans 10449 was used in a nutrition medium for secondary caries simulation in a fully automated artificial mouth. After completion of thermocycling and biological load cycling, impressions were taken and replicas were investigated under a light microscope for gap widths at enamel and dentin margins. Evaluation of fluorescence was carried out using a special FITC filter. The demineralization depths at the cavity margin were evaluated using Xpert for Windows working at a pixel distance of 5 μm. RESULTS After thermocycling, no difference in gap widths and demineralization depths was found (p > 0.05). After incubation, gap widths and demineralization depths were significantly reduced with higher amounts of silver loading in most of the adhesives (p < 0.05). The 0.5 % silver addition resulted in a slight decrease of secondary caries at resin-dentin margins (p < 0.05). CONCLUSIONS Addition of microparticulate silver in commercially available dental adhesives has the potential of reducing secondary caries. CLINICAL RELEVANCE The chosen setup was able to produce secondary caries with a distinct in vivo appearance. Microparticulate silver additions in dental adhesives may have an impact on inhibition of secondary caries.
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Farias DCS, Lopes GC, Baratieri LN. Two-year clinical performance of a two-step etch-and-rinse adhesive in non-carious cervical lesions. Clin Oral Investig 2015; 19:1867-74. [PMID: 25609033 DOI: 10.1007/s00784-015-1399-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2013] [Accepted: 01/02/2015] [Indexed: 11/28/2022]
Affiliation(s)
- David Cardoso Sandes Farias
- School of Dentistry, Department of Operative Dentistry, Federal University of Santa Catarina, Campus Universitário Reitor João David Ferreira Lima - Trindade, room 138, 88040-900, Florianópolis, Santa Catarina, Brazil.
| | - Guilherme Carpena Lopes
- School of Dentistry, Department of Operative Dentistry, Federal University of Santa Catarina, Campus Universitário Reitor João David Ferreira Lima - Trindade, room 138, 88040-900, Florianópolis, Santa Catarina, Brazil
| | - Luiz Narciso Baratieri
- School of Dentistry, Department of Operative Dentistry, Federal University of Santa Catarina, Campus Universitário Reitor João David Ferreira Lima - Trindade, room 138, 88040-900, Florianópolis, Santa Catarina, Brazil
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Koyuturk AE, Tokay U, Sari ME, Ozmen B, Cortcu M, Acar H, Ulker M. Influence of the bulk fill restorative technique on microleakage and microtensile of class II restorations. PEDIATRIC DENTAL JOURNAL 2014. [DOI: 10.1016/j.pdj.2014.07.002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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50
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Resin composites: Modulus of elasticity and marginal quality. J Dent 2014; 42:1185-92. [DOI: 10.1016/j.jdent.2014.07.004] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2014] [Revised: 07/02/2014] [Accepted: 07/04/2014] [Indexed: 11/23/2022] Open
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