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Ismail HS, Ali AI, El Mehesen R, Garcia-Godoy F, Mahmoud SH. Clinical evaluation of subgingival open sandwich restorations: 3-year results of a randomized double-blind trial. J ESTHET RESTOR DENT 2024; 36:573-587. [PMID: 37902283 DOI: 10.1111/jerd.13158] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2023] [Revised: 09/21/2023] [Accepted: 10/12/2023] [Indexed: 10/31/2023]
Abstract
OBJECTIVES To provide a 3-year follow-up of previously treated patients to assess and compare the periodontal responses and clinical performance of proximal subgingival open sandwich restorations. MATERIALS AND METHODS Ninety-five adults participated in the study, with a combined total of 120 compound Class II cavities. These cavities had gingival margins located below the CEJ. Four different restorative materials were used to elevate the dentin/cementum gingival margins of the cavities: resin-modified glass ionomer, glass hybrid, flowable bulk-fill composite, or ion-releasing material, which were then completed with the same overlaying composite. Different periodontal and clinical evaluations, based on the criteria set by the World Dental Federation (FDI) criteria, were performed at different time intervals, including baseline, 6 months, 1, 2, and 3 years. RESULTS The type of base material did not affect the periodontal evaluations. There were no statistically significant differences between different time intervals or base material groups in any of the evaluated FDI parameters. However, the ion-releasing material scored significantly worse in the radiographic evaluation than any of the other groups. CONCLUSIONS All tested materials are suitable for proximal subgingival open sandwich restorations, as long as the restoration/tooth margin is at least 2-mm away from the bone crest. CLINICAL SIGNIFICANCE Clinicians can confidently choose any of the tested materials for proximal subgingival open sandwich restorations, as they have shown good outcomes from both periodontal and clinical perspectives.
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Affiliation(s)
- Hoda S Ismail
- Conservative Dentistry Department, Faculty of Dentistry, Mansoura University, Mansoura, Egypt
| | - Ashraf I Ali
- Conservative Dentistry Department, Faculty of Dentistry, Mansoura University, Mansoura, Egypt
| | - Rabab El Mehesen
- Conservative Dentistry Department, Faculty of Dentistry, Mansoura University, Mansoura, Egypt
| | - Franklin Garcia-Godoy
- Professor, Department of Bioscience Research, College of Dentistry, University of Tennessee Health Science Center, Memphis, Tennessee, USA
- Adjunct Faculty, The Forsyth Institute, Cambridge, Massachusetts, USA
| | - Salah H Mahmoud
- Conservative Dentistry Department, Faculty of Dentistry, Mansoura University, Mansoura, Egypt
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Bresser RA, Carvalho MA, Naves LZ, Melma H, Cune MS, Gresnigt MMM. Biomechanical behavior of molars restored with direct and indirect restorations in combination with deep margin elevation. J Mech Behav Biomed Mater 2024; 152:106459. [PMID: 38394767 DOI: 10.1016/j.jmbbm.2024.106459] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2023] [Revised: 01/30/2024] [Accepted: 02/05/2024] [Indexed: 02/25/2024]
Abstract
STATEMENT OF PROBLEM The existing knowledge is insufficient for comprehending the fatigue survival and fracture resistance of molars that have deep approximal direct and indirect restorations, whether with or without deep margin elevation (DME). PURPOSE The aim of this laboratory and in silico study is to investigate the fatigue survival, fracture strength, failure pattern and tooth deformation of molars restored with DME in combination with a direct or indirect restoration. MATERIAL AND METHODS This study utilized 45 extracted sound human molars, divided into three groups (n = 15). Standardized 100% inter-cuspal inlay preparations were performed, extending 2 mm below the CEJ and immediate dentin sealing (IDS) was applied. Group 1 (Co_1) was restored with direct composite; Group 2 (Hyb_2) with a 2 mm DME of direct composite and a glass-ceramic lithium disilicate restoration; Group 3 (Cer_3) a glass-ceramic lithium disilicate restoration. All specimens were exposed to a fatigue process involving thermal-cyclic loading (50N for 1.2 × 106 cycles at 1.7 Hz, between 5 and 55 °C), if teeth survived, they were fractured using a load-to-failure test and failure types were analyzed. Finite element analysis (FEA) was conducted to assess tooth deformation and tensile stress in the restorations. Statistical evaluation of fracture strength was conducted using the Kruskal-Wallis test. Fisher's exact test was utilized to analyze the fracture types and repairability. A statistical significance level of α < 0.05 was set for all analyses. RESULTS All specimens successfully withstood the fatigue testing procedure, and no statistically significant differences in fracture strength were observed among the three groups (P > 0.05). The Fisher's exact test indicated a significant association between the restorative material and fracture type (F2 = 18.315, df = 2, P = 0.004), but also for repairability (F2 = 13.725, df = 2, P = 0.001). Crown-root fractures were significantly more common in the Cer_3 group compared to the Co_1 group (P = 0.001) and the Co_1 group had significantly more repairable fractures (F2 = 13.197, df = 2, P = 0.001). FEA revealed comparable outcomes of deformation among models and higher maximum tensile stress on models with higher frequency of catastrophic failures. CONCLUSIONS All tested restoration materials exhibited comparable fatigue survival and fracture strength in this laboratory and in silico study. However, it is important to recognize the potential for more severe and irreparable fractures when opting for deeply luted glass-ceramic inlay restorations in clinical practice. In such cases, it would be prudent to consider the alternative option being a direct composite approach, because of its more forgiving fracture types and repairability. CLINICAL IMPLICATIONS Molars with deep approximal direct and indirect restorations, whether with or without DME, are comparable in their fatigue survival and fracture resistance to withstand intra-oral forces. Deep direct restorations exhibit more repairable fractures compared to deeply luted glass-ceramics.
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Affiliation(s)
- Rijkje A Bresser
- University of Groningen, University Medical Center Groningen, Center for Dentistry and Oral Hygiene, Department of Restorative Dentistry, Groningen, the Netherlands.
| | - Marco A Carvalho
- Dental School, Evangelical University of Goias, Anapolis, Brazil
| | - Lucas Z Naves
- University of Groningen, University Medical Center Groningen, Center for Dentistry and Oral Hygiene, Department of Restorative Dentistry, Groningen, the Netherlands
| | - H Melma
- University of Groningen, University Medical Center Groningen, Center for Dentistry and Oral Hygiene, Department of Restorative Dentistry, Groningen, the Netherlands
| | - Marco S Cune
- University of Groningen, University Medical Center Groningen, Center for Dentistry and Oral Hygiene, Department of Restorative Dentistry, Groningen, the Netherlands; St. Antonius Hospital Nieuwegein, Department of Oral Maxillofacial Surgery, Prosthodontics and Special Dental Care, Nieuwegein, the Netherlands
| | - Marco M M Gresnigt
- University of Groningen, University Medical Center Groningen, Center for Dentistry and Oral Hygiene, Department of Restorative Dentistry, Groningen, the Netherlands; Martini Hospital, Department of Special Dental Care, Groningen, the Netherlands
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Geo TD, Gupta S, Gupta SG, Rana KS. Is Deep margin elevation a reliable tool for cervical margin relocation? - A comparative review. J Oral Biol Craniofac Res 2024; 14:33-38. [PMID: 38481655 PMCID: PMC10935500 DOI: 10.1016/j.jobcr.2023.12.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2023] [Revised: 11/16/2023] [Accepted: 12/04/2023] [Indexed: 06/04/2024] Open
Abstract
The permanence of deep subgingival restorations are questionable both functionally and biologically. Crown lengthening is one of the traditionally performing procedures to visualize and relocate the deep margins, but the limitations of the invasive surgical procedure are anatomical complications like exposure of root concavities or furcation, violation of biological width, post operative discomfort because of sutures or periodontal packs; and less patient compliance. Other than crown lengthening, researchers tried some other techniques like modified matrix adaptation technique, using retraction cord, making holes in matrix band and flowing resin modified glass ionomer cement (RMGIC) to the root or cervical caries, orthodontic extrusion. But most of these procedures are failed to give adequate clinical success. Deep margin elevation (DME) is one of the minimally invasive and successful procedure performing in deep subgingival caries. But the evidences and knowledge in this technique is limited among practitioners. This review is to evaluate the applicability of DME, the current clinical concepts, techniques and materials for DME; and a comparison with traditionally used various techniques for cervical margin relocation also concluding that currently available various clinical parameters with this technique.
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Affiliation(s)
- T D Geo
- Department of Conservative Dentistry and Endodontics, Government College of Dentistry, 1 Sardar Patel Marg, Opp. M.Y. Hospital, Indore, Madhya Pradesh, 452001, India
| | - Saurabh Gupta
- Department of Conservative Dentistry and Endodontics, Government College of Dentistry, 1 Sardar Patel Marg, Opp. M.Y. Hospital, Indore, Madhya Pradesh, 452001, India
| | - Shilpi Gilra Gupta
- Department of Prosthodontics and Crown and Bridge, Government College of Dentistry, 1 Sardar Patel Marg, Opp. M.Y. Hospital, Indore, Madhya Pradesh, 452001, India
| | - Kuldeep Singh Rana
- Department of Conservative Dentistry and Endodontics, Government College of Dentistry, 1 Sardar Patel Marg, Opp. M.Y. Hospital, Indore, Madhya Pradesh, 452001, India
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Fichera G, Mazzitelli C, Picciariello V, Maravic T, Josic U, Mazzoni A, Breschi L. Structurally compromised teeth. Part II: A novel approach to peripheral build up procedures. J ESTHET RESTOR DENT 2024; 36:20-31. [PMID: 37565412 DOI: 10.1111/jerd.13118] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2023] [Revised: 07/21/2023] [Accepted: 07/24/2023] [Indexed: 08/12/2023]
Abstract
OBJECTIVE To introduce the "Peripheral Build-Up technique - PBUt" as a foundation restoration strategy for structurally compromised teeth (SCT). CLINICAL CONSIDERATIONS Several strategies have been proposed over time (cervical marginal relocation, doughnut, and preformed ring techniques) to enable the management of restorative procedures in challenging situations such as the presence of deep subgingival defects. The PBUt is a versatile, completely additive direct technique that share some strategical concepts with these techniques to approach critical clinical situations while supplying a wider field of application thanks to distinct operative expedients. The clamp insertion modality, the extension of the proximal wall and the matrix customization/stabilization strategies adopted in PBUt endorse the possibility to manage the most apical and peripheral border of the residual tooth structure when located up to >1.5 mm above the bone crest. The periodontal response has to be then monitored over time. Moreover, thanks to the peripheral and apically-extended addictive approach, it allows a massive preservation of residual sound tooth structure and improves the resistance and retentive physical/geometrical features of the abutment tooth. The PBUt operative workflow is herein explained. CLINICAL SIGNIFICANCE The Peripheral-Build-Up technique (PBUt) advocates some innovative clinical restorative steps for the management of SCT with coronal and deep subgingival defects.
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Affiliation(s)
| | - Claudia Mazzitelli
- Department of Biomedical and Neuromotor Science (DIBINEM), Alma Mater Studiorum, University of Bologna, Bologna, Italy
| | | | - Tatjana Maravic
- Department of Biomedical and Neuromotor Science (DIBINEM), Alma Mater Studiorum, University of Bologna, Bologna, Italy
| | - Uros Josic
- Department of Biomedical and Neuromotor Science (DIBINEM), Alma Mater Studiorum, University of Bologna, Bologna, Italy
| | - Annalisa Mazzoni
- Department of Biomedical and Neuromotor Science (DIBINEM), Alma Mater Studiorum, University of Bologna, Bologna, Italy
| | - Lorenzo Breschi
- Department of Biomedical and Neuromotor Science (DIBINEM), Alma Mater Studiorum, University of Bologna, Bologna, Italy
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Cribari L, Madeira L, Roeder RBR, Macedo RM, Wambier LM, Porto TS, Gonzaga CC, Kaizer MR. High-viscosity glass-ionomer cement or composite resin for restorations in posterior permanent teeth? A systematic review and meta-analyses. J Dent 2023; 137:104629. [PMID: 37499738 DOI: 10.1016/j.jdent.2023.104629] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2023] [Revised: 06/20/2023] [Accepted: 07/19/2023] [Indexed: 07/29/2023] Open
Abstract
OBJECTIVES Answer the PICO question: Do class I and II posterior restorations in permanent teeth placed with high-viscosity glass-ionomer cement (HV-GIC) fail more than composite resin (CR) restorations? DATA The study was registered in the PROSPERO database (CRD42020138290). Randomized and controlled clinical trials, comparing the performance of HV-GIC and CR in load bearing cavities of posterior permanent teeth were included. Cochrane risk of bias tool and GRADE were used to assess the quality and certainty of the evidence. Meta-analyses were performed for clinical outcomes on USPHS and FDI criteria for 12-, 24- and 36-months follow-ups. SOURCES PubMed, Scopus and Web of Science were last searched on April 2, 2022, without language or date restrictions. Reference lists of primary studies and their related article link in PubMed were manually searched. STUDY SELECTION Ten studies were included, while data from 8 were used for the meta-analyses. A total of 849 HV-GIC and 800 CR restorations were followed. The primary outcome was the fracture/retention of the restoration, with a comparable performance for both materials on all follow-ups. The 36 months follow-up for class I restorations (longest) showed risk difference of -0,00 (95%CI -0,03 to 0,03; p = 0,98) and no heterogeneity (p = 0,98, I2=0%). The certainty of the evidence is moderate, as all included studies were at an uncertain risk of bias. CONCLUSIONS HV-GIC and CR presented comparable clinical performance in posterior permanent teeth up to 36 months. HV-GIV wear in class I restorations followed by 24 months was the only poorer result compared to CR. CLINICAL SIGNIFICANCE Conservative load bearing cavities in permanent posterior teeth can be restored with HV-GIC with comparable clinical performance to CR expected at least up to 3 years. HV-GIC is a valuable direct restorative option for posterior teeth in high caries risk patients, in which CR is frequently associated with failure.
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Affiliation(s)
- Lisiane Cribari
- School of Dentistry, Universidade Positivo, 5300 Professor Pedro Viriato Parigot de Souza Street, Curitiba, PR 81280-330, Brazil
| | - Luciano Madeira
- School of Dentistry, Universidade Positivo, 5300 Professor Pedro Viriato Parigot de Souza Street, Curitiba, PR 81280-330, Brazil
| | - Renata B R Roeder
- School of Dentistry, Universidade Positivo, 5300 Professor Pedro Viriato Parigot de Souza Street, Curitiba, PR 81280-330, Brazil
| | - Rander M Macedo
- School of Dentistry, Universidade Positivo, 5300 Professor Pedro Viriato Parigot de Souza Street, Curitiba, PR 81280-330, Brazil
| | - Leticia M Wambier
- School of Dentistry, Universidade Positivo, 5300 Professor Pedro Viriato Parigot de Souza Street, Curitiba, PR 81280-330, Brazil
| | - Thiago S Porto
- Department of Operative Dentistry, University of Iowa College of Dentistry, 801 Newton Rd, Iowa City, IA 52242, United States
| | - Carla C Gonzaga
- School of Dentistry, Universidade Positivo, 5300 Professor Pedro Viriato Parigot de Souza Street, Curitiba, PR 81280-330, Brazil
| | - Marina R Kaizer
- School of Dentistry, Universidade Positivo, 5300 Professor Pedro Viriato Parigot de Souza Street, Curitiba, PR 81280-330, Brazil.
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Pei SL, Chen MH. Comparison of periodontal health of primary teeth restored with zirconia and stainless steel crowns: A systemic review and meta-analysis. J Formos Med Assoc 2023; 122:148-156. [PMID: 36180321 DOI: 10.1016/j.jfma.2022.08.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2022] [Revised: 08/17/2022] [Accepted: 08/22/2022] [Indexed: 02/03/2023] Open
Abstract
BACKGROUND/PURPOSE In children, the use of stainless steel crowns to treat caries has a high success rate. However, due to the unnatural color of stainless steel crowns, it still needs to modify crown types. The present meta-analysis study aims to explore the previous articles on the comparison of stainless steel crowns and zirconia crowns. METHODS The systematic search of studies on the comparison of zirconia crowns and stainless steel crowns for primary teeth was mainly in PubMed and Cochrane database. The standardized mean differences (SMDs) of gingival health between zirconia crowns and stainless steel crowns comprised the primary outcome, and the SMDs of plaque index compared two crown treatments was treated as the secondary outcome. RESULTS The meta-analysis extracted 187 papers from various databases and collected five randomized controlled trials, four comparisons on deciduous molars and one comparison on deciduous incisors. 160 children were included, ranging in age from 3-9 years old. The quantitative analysis showed a significantly lower gingival index of zirconia crowns in the primary molar group and the primary incisor group. The plaque index between two crown treatments groups was -4.51, indicating less accumulation of plaque on zirconia crown. However, the heterogeneity of included trials still need to be considered. CONCLUSION Zirconia crowns for deciduous teeth had its advantages for gingival health. Although stainless steel crowns were more likely to have plaque deposition and gingival inflammation, zirconia crowns relatively caused the opposite tooth wearing and chipping. Therefore, the comprehensive consideration is important to choose deciduous tooth crown.
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Affiliation(s)
- Shan-Li Pei
- Graduate Institute of Clinical Dentistry, School of Dentistry, National Taiwan University, Taipei, No. 1, Chang-de St., 100, Taiwan; Department of Dentistry, National Taiwan University Hospital, Taipei, Taiwan
| | - Min-Huey Chen
- Graduate Institute of Clinical Dentistry, School of Dentistry, National Taiwan University, Taipei, No. 1, Chang-de St., 100, Taiwan; Department of Dentistry, National Taiwan University Hospital, Taipei, Taiwan.
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Resin Composites in Posterior Teeth: Clinical Performance and Direct Restorative Techniques. Dent J (Basel) 2022; 10:dj10120222. [PMID: 36547038 PMCID: PMC9777426 DOI: 10.3390/dj10120222] [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: 11/01/2022] [Revised: 11/21/2022] [Accepted: 11/22/2022] [Indexed: 11/29/2022] Open
Abstract
Resin composites are the most versatile restorative materials used in dentistry and the first choice for restoring posterior teeth. This article reviews aspects that influence the clinical performance of composite restorations and addresses clinically relevant issues regarding different direct techniques for restoring posterior teeth that could be performed in varied clinical situations. The article discusses the results of long-term clinical trials with resin composites and the materials available in the market for posterior restorations. The importance of photoactivation is presented, including aspects concerning the improvement of the efficiency of light-curing procedures. With regard to the restorative techniques, the article addresses key elements and occlusion levels for restoring Class I and Class II cavities, in addition to restorative strategies using different shades/opacities of resin composites in incremental techniques, restorations using bulk-fill composites, and shade-matching composites.
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Grewal N, Jha S, Kaur N. Clinical and Radiographic Success of Resin-bonded Strip Crowns in Primary Incisors with Varying Extents of Sound Tooth Structure Available for Bonding. Int J Clin Pediatr Dent 2021; 14:454-461. [PMID: 34824495 PMCID: PMC8585911 DOI: 10.5005/jp-journals-10005-1984] [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] [Indexed: 11/23/2022] Open
Abstract
Context First-time dental treatment for children is often sought due to carious, malformed, fractured, and discolored teeth. The strip crown represents a highly esthetic and popular option for the restoration of primary anterior teeth. However, there are limited data on the clinical success of these crowns based on the extent of surface area used for adhesion. Aims settings and design This in vivo study aimed to assess the clinical, radiographic, and photographic performance of 66 composite strip crown restorations on primary anterior teeth for up to 15 months and compare the outcome based on the extent and surface area of tooth structure available. Materials and methods The amount of surface area available in each group after removal of affected enamel was evaluated through 3D scanning of study casts and digital measurements. The teeth were thus grouped into three categories: group I with crown structure involvement up to the incisal one-third, group II with involvement up to the middle of the middle third, and group III with involvement up to the cervical one-third. Statistical analysis used Kruskal-Wallis H test and Mann-Whitney U test were used for computation of mean scores for intra- and intergroup comparison, respectively. Scoring was done as per FDI clinical criteria on a scale of 1 to 5. Results Group III showed the highest mean scores at different time intervals and also the highest failure rate (52.38%), followed by group II (12%) and group I (5%). The overall retention rate observed for the strip crowns was 77.28% at the end of 15 months. Conclusion Strip crowns should be considered for teeth that offer a minimum of half to two-thirds of the healthy tooth structure remaining. Further, longitudinal studies are required to add to the results of the final outcome of these restorations. Key messages A critical surface area value of <50 mm2 or less than half of the available sound tooth structure was found to be detrimental to the retention rate of these crowns in this study. It could therefore be suggested to consider strip crowns for teeth that offer a minimum of half to two-thirds of healthy tooth structure remaining. How to cite this article Grewal N, Jha S, Kaur N. Clinical and Radiographic Success of Resin-bonded Strip Crowns in Primary Incisors with Varying Extents of Sound Tooth Structure Available for Bonding. Int J Clin Pediatr Dent 2021;14(4):454-461.
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Affiliation(s)
- Navneet Grewal
- Department of Pedodontics and Preventive Dentistry, Government Dental College and Hospital, Amritsar, Punjab, India
| | - Soumya Jha
- Department of Pedodontics and Preventive Dentistry, Government Dental College and Hospital, Amritsar, Punjab, India
| | - Nirapjeet Kaur
- Department of Pedodontics and Preventive Dentistry, Government Dental College and Hospital, Amritsar, Punjab, India
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Giachetti L. A Simple Method for Modifying the Emergence Profile by Direct Restorations: The Biologically Active Intrasulcular Restoration Technique. Oper Dent 2020; 45:575-580. [PMID: 32503042 DOI: 10.2341/19-170-t] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/03/2020] [Indexed: 11/23/2022]
Abstract
CLINICAL RELEVANCE It is possible to modify the natural emergence profile of the tooth using simple intrasulcular direct restorations. The shape of the intrasulcular part of the restoration will determine the design of the gingival contour. SUMMARY Some clinical situations, such as the closure of pronounced diastemas and the transformation of malformed, small, or peg-shaped teeth, require a rebalancing of dental proportions accompanied by a modification of the gingival contour. A traditional treatment plan might require surgical, prosthetic, and/or orthodontic treatment, but in some cases, these therapeutic options could be considered too invasive and not always the best solution. Moreover, not all patients are ready to undergo irreversible, long, and expensive procedures. To overcome these limitations and to solve all of these clinical problems in a rapid and noninvasive way, we propose a new technique that allows us to modify the natural emergence profile of the tooth using simple intrasulcular direct restorations. Using the Biologically Active Intrasulcular Restoration technique, it is possible to rebalance tooth shape and dimensions, gingival level and contour with low biological and economic costs. This method, which does not require any preparation of the dental tissues, is reversible and minimally invasive. It is applicable to patients of all ages, and results are obtained in a single appointment.
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Frankenberger R, Reinelt C, Glatthöfer C, Krämer N. Clinical performance and SEM marginal quality of extended posterior resin composite restorations after 12 years. Dent Mater 2020; 36:e217-e228. [DOI: 10.1016/j.dental.2020.03.022] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2019] [Revised: 01/21/2020] [Accepted: 03/27/2020] [Indexed: 02/07/2023]
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Staszczyk M, Jurczak A, Magacz M, Kościelniak D, Gregorczyk-Maga I, Jamka-Kasprzyk M, Kępisty M, Kołodziej I, Kukurba-Setkowicz M, Krzyściak W. Effect of Polyols and Selected Dental Materials on the Ability to Create a Cariogenic Biofilm-On Children Caries-Associated Streptococcus Mutans Isolates. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2020; 17:ijerph17103720. [PMID: 32466155 PMCID: PMC7277333 DOI: 10.3390/ijerph17103720] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/23/2020] [Revised: 05/13/2020] [Accepted: 05/21/2020] [Indexed: 01/13/2023]
Abstract
Secondary caries is a disease associated with the formation of biofilm on the border of the tooth and dental filling. Its development is strongly influenced by the dietary sweet foods and the type of dental material. The aim of the study was to assess the effect of sweeteners on the ability of clinical Streptococcus mutans strains to form biofilm on dental materials. Strains were isolated from plaque samples from 40 pediatric patients from the 3-6 ICADS II group. The ability to form biofilm was tested on composite and glass ionomer dental materials used for milk teeth filling in the presence of sucrose, xylitol, sorbitol, and erythritol. The bacterial film mass after 12, 24, 48, and 72 h and the number of bacterial colonies significantly decreased (p < 0.01) compared to the initial value for 5% erythritol and sorbitol on examined materials. A greater inhibitory effect was noted for glass ionomers compared to composites. Sucrose and xylitol supported biofilm formation, while erythritol had the best inhibitory effect. The use of fluoride-releasing glass ionomers exerted an effect synergistic to erythritol, i.e., inhibited plaque formation and the amount of cariogenic S. mutans. Selection of proper type of dental material together with replacing sucrose with polyols can significantly decrease risk of secondary caries development. Erithritol in combination with glass ionomer seems to be the most effective in secondary caries prevention.
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Affiliation(s)
- Małgorzata Staszczyk
- Department of Pediatric Dentistry, Institute of Dentistry, Jagiellonian University Medical College, 31-155 Krakow, Poland; (M.S.); (A.J.); (D.K.); (I.G.-M.); (M.J.-K.); (M.K.); (I.K.); (M.K.-S.)
| | - Anna Jurczak
- Department of Pediatric Dentistry, Institute of Dentistry, Jagiellonian University Medical College, 31-155 Krakow, Poland; (M.S.); (A.J.); (D.K.); (I.G.-M.); (M.J.-K.); (M.K.); (I.K.); (M.K.-S.)
| | - Marcin Magacz
- Department of Medical Diagnostics, Faculty of Pharmacy, Jagiellonian University Medical College, 30-688 Krakow, Poland;
- Doctoral School of Health and Medical Sciences, Jagiellonian University Medical College, 31-008 Krakow, Poland
| | - Dorota Kościelniak
- Department of Pediatric Dentistry, Institute of Dentistry, Jagiellonian University Medical College, 31-155 Krakow, Poland; (M.S.); (A.J.); (D.K.); (I.G.-M.); (M.J.-K.); (M.K.); (I.K.); (M.K.-S.)
| | - Iwona Gregorczyk-Maga
- Department of Pediatric Dentistry, Institute of Dentistry, Jagiellonian University Medical College, 31-155 Krakow, Poland; (M.S.); (A.J.); (D.K.); (I.G.-M.); (M.J.-K.); (M.K.); (I.K.); (M.K.-S.)
| | - Małgorzata Jamka-Kasprzyk
- Department of Pediatric Dentistry, Institute of Dentistry, Jagiellonian University Medical College, 31-155 Krakow, Poland; (M.S.); (A.J.); (D.K.); (I.G.-M.); (M.J.-K.); (M.K.); (I.K.); (M.K.-S.)
| | - Magdalena Kępisty
- Department of Pediatric Dentistry, Institute of Dentistry, Jagiellonian University Medical College, 31-155 Krakow, Poland; (M.S.); (A.J.); (D.K.); (I.G.-M.); (M.J.-K.); (M.K.); (I.K.); (M.K.-S.)
| | - Iwona Kołodziej
- Department of Pediatric Dentistry, Institute of Dentistry, Jagiellonian University Medical College, 31-155 Krakow, Poland; (M.S.); (A.J.); (D.K.); (I.G.-M.); (M.J.-K.); (M.K.); (I.K.); (M.K.-S.)
| | - Magdalena Kukurba-Setkowicz
- Department of Pediatric Dentistry, Institute of Dentistry, Jagiellonian University Medical College, 31-155 Krakow, Poland; (M.S.); (A.J.); (D.K.); (I.G.-M.); (M.J.-K.); (M.K.); (I.K.); (M.K.-S.)
| | - Wirginia Krzyściak
- Department of Medical Diagnostics, Faculty of Pharmacy, Jagiellonian University Medical College, 30-688 Krakow, Poland;
- Correspondence: ; Tel.: +48-12-620-57-60
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12
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Askar H, Krois J, Göstemeyer G, Bottenberg P, Zero D, Banerjee A, Schwendicke F. Secondary caries: what is it, and how it can be controlled, detected, and managed? Clin Oral Investig 2020; 24:1869-1876. [PMID: 32300980 DOI: 10.1007/s00784-020-03268-7] [Citation(s) in RCA: 66] [Impact Index Per Article: 16.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2019] [Accepted: 03/26/2020] [Indexed: 11/28/2022]
Abstract
OBJECTIVES To assess how to control, detect, and treat secondary caries. This review serves to inform a joint ORCA/EFCD consensus process. METHODS Systematic and non-systematic reviews were performed or consulted and narratively synthesized. RESULTS Secondary (or recurrent) caries is defined as a lesion associated with restorations or sealants. While the restorative material itself has some influence on secondary caries, further factors like the presence and size of restoration gaps, patients' caries risk, and the placing dentist's experience seem more relevant. Current detection methods for secondary caries are only sparsely validated and likely prone for the risk of over-detection. In many patients, it might be prudent to prioritize specific detection methods to avoid invasive overtreatment. Detected secondary caries can be managed either by repair of the defective part of the restoration or its complete replacement. CONCLUSIONS There is sparse data towards the nature of secondary caries and how to control, detect, and treat it. CLINICAL SIGNIFICANCE Despite often claimed to be a major complication of restorations, there is surprisingly little data on secondary caries. Longer-term studies may be needed to identify differences in secondary caries risk between materials and to identify characteristic features of progressive lesions (i.e., those in need of treatment).
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Affiliation(s)
- Haitham Askar
- Department of Operative and Preventive Dentistry, Charité - Universitätsmedizin Berlin, Aßmannshauser Str. 4-6, 14197, Berlin, Germany
| | - Joachim Krois
- Department of Operative and Preventive Dentistry, Charité - Universitätsmedizin Berlin, Aßmannshauser Str. 4-6, 14197, Berlin, Germany
| | - Gerd Göstemeyer
- Department of Operative and Preventive Dentistry, Charité - Universitätsmedizin Berlin, Aßmannshauser Str. 4-6, 14197, Berlin, Germany
| | - Peter Bottenberg
- Oral Health Sciences, Vrije Universiteit Brussel, Brussels, Belgium
| | - Domenick Zero
- Department of Cariology, Operative Dentistry and Dental Public Health, Indiana University, School of Dentistry, Indianapolis, IN, USA
| | - Avijit Banerjee
- Conservative & MI Dentistry, Faculty of Dentistry, Oral & Craniofacial Sciences, King's College London, London, UK
| | - Falk Schwendicke
- Department of Operative and Preventive Dentistry, Charité - Universitätsmedizin Berlin, Aßmannshauser Str. 4-6, 14197, Berlin, Germany.
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de Kuijper MCFM, Cune MS, Tromp Y, Gresnigt MMM. Cyclic loading and load to failure of lithium disilicate endocrowns: Influence of the restoration extension in the pulp chamber and the enamel outline. J Mech Behav Biomed Mater 2020; 105:103670. [PMID: 32090891 DOI: 10.1016/j.jmbbm.2020.103670] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2019] [Revised: 02/02/2020] [Accepted: 02/03/2020] [Indexed: 01/22/2023]
Affiliation(s)
- Maurits C F M de Kuijper
- The University of Groningen, University Medical Center Groningen, Center for Dentistry and Oral Hygiene, Department of Restorative Dentistry and Biomaterials, Groningen, the Netherlands.
| | - Marco S Cune
- The University of Groningen, University Medical Center Groningen, Center for Dentistry and Oral Hygiene, Department of Restorative Dentistry and Biomaterials, Groningen, the Netherlands; St. Antonius Hospital Nieuwegein, Department of Oral-Maxillofacial Surgery, Prosthodontics and Special Dental Care, Nieuwegein, the Netherlands; University Medical Center Utrecht, Department of Oral-Maxillofacial Surgery, Prosthodontics and Special Dental Care, Utrecht, the Netherlands
| | - Youp Tromp
- The University of Groningen, University Medical Center Groningen, Center for Dentistry and Oral Hygiene, Department of Restorative Dentistry and Biomaterials, Groningen, the Netherlands
| | - Marco M M Gresnigt
- The University of Groningen, University Medical Center Groningen, Center for Dentistry and Oral Hygiene, Department of Restorative Dentistry and Biomaterials, Groningen, the Netherlands; Martini Hospital, Department of Special Dental Care, Groningen, the Netherlands
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14
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Adhesive Systems Used in Indirect Restorations Cementation: Review of the Literature. Dent J (Basel) 2019; 7:dj7030071. [PMID: 31266163 PMCID: PMC6784471 DOI: 10.3390/dj7030071] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2019] [Revised: 05/22/2019] [Accepted: 06/12/2019] [Indexed: 11/22/2022] Open
Abstract
New technologies are changing the therapeutical options to do indirect restorations and new adhesive systems are continuously introduced to be used by clinicians. Different interactions between restorations, adhesive systems components, enamel and dentin require having criteria based on the selection of the adhesive system, ensuring the longevity of the restorations and the preservation of the biological remnant. The adhesion force to the dental tissue is one of the indicatives of the behavior of the adhesive systems and influences the behavior of the treatments with direct and indirect restorations. The objective of this search was to find the adhesive systems with the best results in terms of the adhesion strength of indirect restorations on the dental tissues. The search was conducted in two MEDLINE digital databases (PubMed), and the Cochrane Library with a search strategy based on the combination of MeSH (Medical Subject Headings) keywords. This systematic review used the PRISMA guide (Preferred Reporting Items for Systematic Reviews and Meta-Analysis). According to this review, the 3-step adhesive systems were the best performing and still are the gold standard for the cementing of indirect restorations. In addition, it can be concluded that self-etched adhesive systems reduce the time spent in clinical practice, however at the interface level they behave as permeable membranes more susceptible to degradation.
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15
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Nedeljkovic I, De Munck J, Vanloy A, Declerck D, Lambrechts P, Peumans M, Teughels W, Van Meerbeek B, Van Landuyt KL. Secondary caries: prevalence, characteristics, and approach. Clin Oral Investig 2019; 24:683-691. [PMID: 31123872 DOI: 10.1007/s00784-019-02894-0] [Citation(s) in RCA: 79] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2018] [Accepted: 04/03/2019] [Indexed: 12/29/2022]
Abstract
OBJECTIVES The objectives of this cross-sectional survey were to determine the prevalence of secondary caries (SC) in general population, to identify patient- and material-related factors which may affect the prevalence, and to describe some clinical characteristics of SC lesions. MATERIALS AND METHODS A total of 4036 restorations in 450 patients, who visited the university dental clinic for a regular (half) yearly checkup, were examined clinically (and radiographically) for the presence of SC. Clinical characteristics of the detected SC lesions (size, activity, and location) and the planned treatment were recorded. In addition, patients' caries-risk status was assessed according to the modified "cariogram" model. RESULTS In total, 146 restorations were diagnosed with SC, which gives an overall prevalence of 3.6%. Restorative material, restoration class, patient's caries risk, and smoking habits were shown to be important factors, as SC prevalence was significantly higher with composites, class II restorations, high-caries-risk patients, and smokers. Restorations' gingival margins were most frequently affected by SC. The largest number of restorations with SC (72%) was scheduled for the replacement. CONCLUSIONS Prevalence of SC was higher with composite than with amalgam restorations, irrespective of the patient's caries-risk status. Gingival margins of class II, including MOD restorations, seem to be the place of less resistance to SC development. Management of SC seems to place a considerable burden on the health care workforce and expenditure. CLINICAL RELEVANCE Secondary caries (SC) is considered to be the main cause of dental restoration failure and one of the biggest clinical challenges related to dental composites. Nevertheless, its prevalence in daily practice is still not clear, which impedes an accurate estimation of its impact on health care costs.
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Affiliation(s)
- Ivana Nedeljkovic
- Department of Oral Health Sciences, KU Leuven BIOMAT, University of Leuven & Dentistry University Hospitals Leuven, Kapucijnenvoer 7, 3000, Leuven, Belgium
| | - Jan De Munck
- Department of Oral Health Sciences, KU Leuven BIOMAT, University of Leuven & Dentistry University Hospitals Leuven, Kapucijnenvoer 7, 3000, Leuven, Belgium
| | - Anouk Vanloy
- Department of Oral Health Sciences, KU Leuven BIOMAT, University of Leuven & Dentistry University Hospitals Leuven, Kapucijnenvoer 7, 3000, Leuven, Belgium
| | - Dominique Declerck
- Department of Oral Health Sciences, KU Leuven Population Oral Health Studies, University of Leuven & Dentistry University Hospitals Leuven, Kapucijnenvoer 7, 3000, Leuven, Belgium
| | - Paul Lambrechts
- Department of Oral Health Sciences, KU Leuven BIOMAT, University of Leuven & Dentistry University Hospitals Leuven, Kapucijnenvoer 7, 3000, Leuven, Belgium
| | - Marleen Peumans
- Department of Oral Health Sciences, KU Leuven BIOMAT, University of Leuven & Dentistry University Hospitals Leuven, Kapucijnenvoer 7, 3000, Leuven, Belgium
| | - Wim Teughels
- Department of Oral Health Sciences , Oral Microbiology, University of Leuven & Dentistry University Hospitals Leuven, Kapucijnenvoer 7, 3000, Leuven, Belgium
| | - Bart Van Meerbeek
- Department of Oral Health Sciences, KU Leuven BIOMAT, University of Leuven & Dentistry University Hospitals Leuven, Kapucijnenvoer 7, 3000, Leuven, Belgium
| | - Kirsten L Van Landuyt
- Department of Oral Health Sciences, KU Leuven BIOMAT, University of Leuven & Dentistry University Hospitals Leuven, Kapucijnenvoer 7, 3000, Leuven, Belgium.
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Hammond B, Brackett M, Delash J, Brackett W. Elevation of an Amalgam-stained Margin With Resin-modified Glass Ionomer to Support an Indirect Ceramic Restoration: A Six-year Case Report. Oper Dent 2019; 44:560-565. [PMID: 30702406 DOI: 10.2341/18-114-s] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
This case report presents treatment of a mandibular second molar with an extensive proximal margin, which was finished on amalgam-stained dentin. A resin-modified glass ionomer for margin elevation and a lithium disilicate onlay were used to restore the tooth to proper form and function. The patient has been followed for six years and has had no complications during this period.
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17
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Huang B, Cvitkovitch DG, Santerre JP, Finer Y. Biodegradation of resin–dentin interfaces is dependent on the restorative material, mode of adhesion, esterase or MMP inhibition. Dent Mater 2018; 34:1253-1262. [DOI: 10.1016/j.dental.2018.05.008] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2017] [Revised: 04/02/2018] [Accepted: 05/08/2018] [Indexed: 10/16/2022]
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18
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Frese C, Wolff D, Krüger T, Staehle HJ, Lux CJ, Erber R. Biological evaluation of subgingivally placed direct resin composite materials. J Oral Sci 2018; 60:89-96. [PMID: 29375100 DOI: 10.2334/josnusd.16-0827] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
Abstract
Placement of composite resin restorations in deep subgingival cavities can damage surrounding soft tissues. In addition, commonly used resin-based composites (RBCs) might interfere with wound healing and periodontal health. To clarify cellular interactions with RBCs, we used an MTT assay to investigate adhesion of primary human gingival fibroblasts and human osteoblasts (hFOB 1.19) on five RBC materials with and without surface modifications (alumina blasting with 50- or 110-μm Al2O3). In addition, high-performance liquid chromatography (HPLC) was used to determine release of resin monomers from RBCs after 1 h, 1 day, and 7 days. As compared with tissue culture plastics (the control), cellular adhesion was significantly lower (P < 0.001) for human gingival fibroblasts and osteoblasts. Only minor, nonsignificant differences between individual RBCs were identified. HPLC analyses identified the release of three bifunctional methacrylates bisphenol A glycerolate dimethacrylate, triethylene glycol dimethacrylate, and diurethane dimethacrylate from RBCs and showed that monomer release increased between 1 h and 1 day but remained low. The present findings suggest that surface adhesion in the subgingival area is limited for the tested RBCs. Although residual monomer release was low for all tested RBCs, it might be sufficient to adversely affect cell adhesion.
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Affiliation(s)
- Cornelia Frese
- Department of Conservative Dentistry, University Hospital Heidelberg
| | - Diana Wolff
- Department of Conservative Dentistry, University Hospital Heidelberg
| | - Tanja Krüger
- Department of Conservative Dentistry, University Hospital Heidelberg
| | - Hans J Staehle
- Department of Conservative Dentistry, University Hospital Heidelberg
| | - Christopher J Lux
- Department of Orthodontics and Dentofacial Orthopaedics, University Hospital Heidelberg
| | - Ralf Erber
- Department of Orthodontics and Dentofacial Orthopaedics, University Hospital Heidelberg
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19
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Ferrari M, Koken S, Grandini S, Ferrari Cagidiaco E, Joda T, Discepoli N. Influence of cervical margin relocation (CMR) on periodontal health: 12-month results of a controlled trial. J Dent 2018; 69:70-76. [DOI: 10.1016/j.jdent.2017.10.008] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2017] [Revised: 10/11/2017] [Accepted: 10/19/2017] [Indexed: 10/18/2022] Open
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20
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Askar H, Tu YK, Paris S, Yeh YC, Schwendicke F. Risk of caries adjacent to different restoration materials: Systematic review of in situ studies. J Dent 2017; 56:1-10. [DOI: 10.1016/j.jdent.2016.09.011] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2016] [Revised: 09/26/2016] [Accepted: 09/27/2016] [Indexed: 12/24/2022] Open
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Abstract
The main reason cited for the replacement of dental composite restorations is the recurrence of caries. Numerous models-both in vitro, with acid gels or bacterial biofilms, and in situ, with dental appliances-have been used to study caries formation around dental composites. The literature shows that many factors may affect caries formation, including marginal gap formation, gap size, the local chemical environment, the durability of the bonded interface, the extent of bacterial penetration, and the presence of mechanical loading. Studies have also shown that what have been called wall lesions may form independent of surface lesions, though not likely due to microleakage through very small gap spaces in the clinical situation. Gap size and mechanical loading have been shown to be related to lesion severity within in vitro models, but these results do not correspond exactly with those obtained from in situ studies using restorations in dental appliances. Though not conclusive, some in vitro models have shown that certain materials possessing antimicrobial characteristics may reduce the severity of lesion formation, suggesting possible pathways for developing new composite and adhesive materials for restorations with potentially enhanced longevity.
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Affiliation(s)
- J L Ferracane
- 1 Division of Biomaterials and Biomechanics, Department of Restorative Dentistry, Oregon Health & Science University, Portland, OR, USA
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22
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Sadeghinejad L, Cvitkovitch DG, Siqueira WL, Merritt J, Santerre JP, Finer Y. Mechanistic, genomic and proteomic study on the effects of BisGMA-derived biodegradation product on cariogenic bacteria. Dent Mater 2016; 33:175-190. [PMID: 27919444 DOI: 10.1016/j.dental.2016.11.007] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2016] [Revised: 11/17/2016] [Accepted: 11/17/2016] [Indexed: 01/29/2023]
Abstract
OBJECTIVES Investigate the effects of a Bis-phenyl-glycidyl-dimethacrylate (BisGMA) biodegradation product, bishydroxypropoxyphenyl-propane (BisHPPP), on gene expression and protein synthesis of cariogenic bacteria. METHODS Quantitative real-time polymerase chain reaction was used to investigate the effects of BisHPPP on the expression of specific virulence-associated genes, i.e. gtfB, gtfC, gbpB, comC, comD, comE and atpH in Streptococcus mutans UA159. Possible mechanisms for bacterial response to BisHPPP were explored using gene knock-out and associated complemented strains of the signal peptide encoding gene, comC. The effects of BisHPPP on global gene and protein expression was analyzed using microarray and quantitative proteomics. The role of BisHPPP in glucosyltransferase (GTF) enzyme activity of S. mutans biofilms was also measured. RESULTS BisHPPP (0.01, 0.1mM) up-regulated gtfB/C, gbpB, comCDE, and atpH most pronounced in biofilms at cariogenic pH (5.5). The effects of BisHPPP on the constructed knock-out and complemented strains of comC from quorum-sensing system, implicated this signaling pathway in up-regulation of the virulence-associated genes. Microarray and proteomics identified BisHPPP-regulated genes and proteins involved in biofilm formation, carbohydrate transport, acid tolerance and stress-response. GTF activity was higher in BisHPPP-exposed biofilms when compared to no-BisHPPP conditions. SIGNIFICANCE These findings provide insight into the genetic and physiological pathways and mechanisms that help explain S. mutans adaptation to restorative conditions that are conducive to increased secondary caries around resin composite restorations and may provide guidance to clinicians' decision on the selection of dental materials when considering the long term oral health of patients and the interactions of composite resins with oral bacteria.
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Affiliation(s)
- Lida Sadeghinejad
- Dental Research Institute, Faculty of Dentistry, University of Toronto, Toronto, Ontario, Canada; Institute of Biomaterials and Biomedical Engineering, University of Toronto, Toronto, Ontario, Canada
| | - Dennis G Cvitkovitch
- Dental Research Institute, Faculty of Dentistry, University of Toronto, Toronto, Ontario, Canada; Institute of Biomaterials and Biomedical Engineering, University of Toronto, Toronto, Ontario, Canada
| | - Walter L Siqueira
- Schulich Dentistry and Department of Biochemistry, University of Western Ontario, London, Ontario, Canada
| | - Justin Merritt
- Department of Restorative Dentistry, School of Dentistry, Oregon Health and Science University, Portland, OR, USA
| | - J Paul Santerre
- Dental Research Institute, Faculty of Dentistry, University of Toronto, Toronto, Ontario, Canada; Institute of Biomaterials and Biomedical Engineering, University of Toronto, Toronto, Ontario, Canada
| | - Yoav Finer
- Dental Research Institute, Faculty of Dentistry, University of Toronto, Toronto, Ontario, Canada; Institute of Biomaterials and Biomedical Engineering, University of Toronto, Toronto, Ontario, Canada.
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Opdam NJM, Skupien JA, Kreulen CM, Roeters JJM, Loomans BAC, Huysmans MCDNJM. Case Report: A Predictable Technique to Establish Occlusal Contact in Extensive Direct Composite Resin Restorations: The DSO-Technique. Oper Dent 2016; 41:S96-S108. [DOI: 10.2341/13-112-t] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
SUMMARY
This paper describes the application technique of direct shaping by occlusion (DSO) for large composite restorations including the entire occlusal surface. For this technique, matrix bands and wedges are inserted without interference with antagonists in the desired occlusion. The final increment of soft-composite resin is shaped by letting the patient occlude on the uncured composite. Due to the nature of the technique, special care has to be taken for moisture control and handling of contamination. The procedure, advantages, and limitations of the technique are discussed.
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Affiliation(s)
- NJM Opdam
- Niek JM Opdam, DDS, PhD, associate professor, Radboud Institute for Molecular Life Sciences, Department of Dentistry, Radboud university medical center, Nijmegen, The Netherlands
| | - JA Skupien
- Jovito A Skupien, DDS, MSc, PhD, adjunct professor, School of Dentistry, Franciscan University Center, Santa Maria, Brazil
| | - CM Kreulen
- Cees M Kreulen, DDS, PhD, associate professor, Radboud Institute for Molecular Life Sciences, Department of Dentistry, Radboud university medical center, Nijmegen, The Netherlands
| | - JJM Roeters
- Joost JM Roeters, DDS, PhD, professor, Department of Restorative Dentistry, ACTA (Academic Centre for Dentistry), Amsterdam, The Netherlands
| | - BAC Loomans
- Bas AC Loomans, DDS, PhD, assistant professor, Radboud Institute for Molecular Life Sciences, Department of Dentistry, Radboud university medical center, Nijmegen, The Netherlands
| | - MC DNJM Huysmans
- Marie-Charlotte DNJM Huysmans, DDS, PhD, professor and head, Radboud Institute for Molecular Life Sciences, Department of Dentistry, Radboud university medical center, Nijmegen, The Netherlands
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24
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Kopperud SE, Staxrud F, Espelid I, Tveit AB. The Post-Amalgam Era: Norwegian Dentists' Experiences with Composite Resins and Repair of Defective Amalgam Restorations. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2016; 13:441. [PMID: 27110804 PMCID: PMC4847103 DOI: 10.3390/ijerph13040441] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/10/2016] [Revised: 04/13/2016] [Accepted: 04/15/2016] [Indexed: 11/24/2022]
Abstract
Amalgam was banned as a dental restorative material in Norway in 2008 due to environmental considerations. An electronic questionnaire was sent to all dentists in the member register of the Norwegian Dental Association (NTF) one year later, to evaluate dentists’ satisfaction with alternative restorative materials and to explore dentists’ treatment choices of fractured amalgam restorations. Replies were obtained from 61.3%. Composite was the preferred restorative material among 99.1% of the dentists. Secondary caries was the most commonly reported cause of failure (72.7%), followed by restoration fractures (25.1%). Longevity of Class II restorations was estimated to be ≥10 years by 45.8% of the dentists, but 71.2% expected even better longevity if the restoration was made with amalgam. Repair using composite was suggested by 24.9% of the dentists in an amalgam restoration with a fractured cusp. Repair was more often proposed among young dentists (p < 0.01), employees in the Public Dental Service (PDS) (p < 0.01) and dentists working in counties with low dentist density (p = 0.03). There was a tendency towards choosing minimally invasive treatment among dentists who also avoided operative treatment of early approximal lesions (p < 0.01). Norwegian dentists showed positive attitudes towards composite as a restorative material. Most dentists chose minimally- or medium invasive approaches when restoring fractured amalgam restorations.
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Affiliation(s)
- Simen E Kopperud
- Nordic Institute of Dental Materials (NIOM), Oslo 0855, Norway.
- Faculty of Dentistry, University of Oslo, Oslo 0316, Norway.
| | - Frode Staxrud
- Faculty of Dentistry, University of Oslo, Oslo 0316, Norway.
| | - Ivar Espelid
- Faculty of Dentistry, University of Oslo, Oslo 0316, Norway.
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25
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A practice-based research network on the survival of ceramic inlay/onlay restorations. Dent Mater 2016; 32:687-94. [PMID: 26975695 DOI: 10.1016/j.dental.2016.02.006] [Citation(s) in RCA: 44] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2015] [Revised: 12/23/2015] [Accepted: 02/24/2016] [Indexed: 11/22/2022]
Abstract
OBJECTIVE To evaluate prospectively the longevity of ceramic inlay/onlay restorations placed in a web-based practice-based research network and to investigate risk factors associated with restoration failures. MATERIALS AND METHODS Data were collected by a practice-based research network called Ceramic Success Analysis (CSA). 5791 inlay/onlay ceramic restorations were placed in 5523 patients by 167 dentists between 1994 and 2014 in their dental practices. For each restoration specific information related to the tooth, procedures and materials used were recorded. Annual failure rates (AFRs) were calculated and variables associated with failure were assessed by a multivariate Cox-regression analysis with shared frailty. RESULTS The mean observation time was 3 years (maximum 15 years) of clinical service, and AFRs at 3 and 10 years follow up were calculated as 1.0% and 1.6%. Restorations with cervical outline in dentin showed a 78% higher risk for failure compared to restorations with margins in enamel. The presence of a liner or base of glass-ionomer cement resulted in a risk for failure twice as large as that of restorations without liner or base material. Restorations performed with simplified adhesive systems (2-step etch-and-rinse and 1-step self-etch) presented a risk of failure 142% higher than restorations performed with adhesives with bonding resin as a separate step (3-step etch-and-rinse and 2-step self-etch). 220 failures were recorded and the most predominant reason for failure was fracture of the restoration or tooth (44.5%). CONCLUSIONS Ceramic inlay/onlay restorations made from several glass ceramic materials and applied by a large number of dentists showed a good survival. Deep cervical cavity outline, presence of a glass ionomer lining cement, and use of simplified adhesive systems were risk factors for survival.
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26
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Kuper NK, Montagner AF, van de Sande FH, Bronkhorst EM, Opdam NJM, Huysmans MCDJNM. Secondary Caries Development in in situ Gaps next to Composite and Amalgam. Caries Res 2015; 49:557-63. [PMID: 26407050 DOI: 10.1159/000438728] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2015] [Accepted: 07/13/2015] [Indexed: 11/19/2022] Open
Abstract
This in situ study investigated the secondary caries development in dentin in gaps next to composite and amalgam. For 21 days, 14 volunteers wore a modified occlusal splint containing human dentin samples with an average gap of 215 µm (SD=55 µm) restored with three different materials: Filtek Supreme composite, Clearfil AP-X composite and Tytin amalgam. Eight times a day, the splint with samples was dipped in a 20% sucrose solution for 10 min. Before and after caries development, specimens were imaged with transversal wavelength independent microradiography, and lesion depth (LD) and mineral loss (ML) were calculated. The LD and ML of the three restoration materials were compared within patients using paired t tests (α=5%). In total 38 composite samples (Filtek n=19 and AP-X n=19) and 19 amalgam samples could be used for data analysis. AP-X composite presented the highest mean values of LD and ML of the three restorative materials. Amalgam showed statistically significantly less ML (Δ=452 µm×vol%) than the combined composite materials (p=0.036). When comparing amalgam to the separate composite materials, only AP-X composite showed higher ML (Δ=515 µm×vol%) than amalgam (p=0.034). Analysis of LD showed the same trends, but these were not statistically significant. In conclusion, amalgam showed reduced secondary caries progression in dentin in gaps compared to composite materials tested in this in situ model.
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Affiliation(s)
- Nicolien K Kuper
- Department of Preventive and Restorative Dentistry, Radboud Institute for Health Sciences, Radboud University Medical Center, Nijmegen, The Netherlands
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Solla DF, Paiva TS, André M, Paiva WS. Potential toxicity of dental nanomaterials to the central nervous system. Int J Nanomedicine 2015; 10:5593-4. [PMID: 26366079 PMCID: PMC4562760 DOI: 10.2147/ijn.s91856] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Affiliation(s)
- Davi Fontoura Solla
- Department of Neurology, University of Sao Paulo Medical School, Sao Paulo, Brazil
| | - Tatiana Saito Paiva
- Department of Surgery, Prosthesis, and Maxillofacial Traumatology, University of Sao Paulo Dentistry School, Sao Paulo, Brazil
| | - Marcia André
- Department of Surgery, Prosthesis, and Maxillofacial Traumatology, University of Sao Paulo Dentistry School, Sao Paulo, Brazil
| | - Wellingson Silva Paiva
- Department of Neurology, University of Sao Paulo Medical School, Sao Paulo, Brazil ; Neurology Center, Samaritano Hospital, Sao Paulo, Brazil
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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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Lempel E, Tóth Á, Fábián T, Krajczár K, Szalma J. Retrospective evaluation of posterior direct composite restorations: 10-year findings. Dent Mater 2014; 31:115-22. [PMID: 25480695 DOI: 10.1016/j.dental.2014.11.001] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2014] [Revised: 04/16/2014] [Accepted: 11/03/2014] [Indexed: 11/28/2022]
Abstract
OBJECTIVES This 10-year retrospective study investigated the differences in the changes and the longevity of Class II restorations using 4 similar microhybrid resin composites (Filtek Z250, Herculite XR, Gradia Direct Posterior, Renew). METHODS Data were collected from patient records. Those patients who received posterior restoration between 2001 and 2003, and who still visited the clinical practice for regular check-up visits were selected. A total of 225 adult patients (86 males, 139 females) with 701 restorations were evaluated by 2 operators using the USPHS criteria. Data were analyzed with Fisher's Exact Test, Pearson's Chi-Square Test and Kaplan-Meier analysis (p<0.05). RESULTS A failure rate of 2.1% was detected. The reasons of failures included restoration fracture, secondary caries and endodontic treatment. Similar survival rates for Gradia Direct Posterior (91.25%) and Renew (92.19%) were observed; better performance was observed with the Filtek Z250 (99.1%) and Herculite XR (98.64%). There was a higher probability of failure in 3 surface (n=10) than in 2 surface (n=5) restorations (p<0.001), and this rate was similar when molars (n=8) and premolars (n=7) were compared. The most frequent but clinically acceptable deficiency was the marginal discoloration. SIGNIFICANCE All four microhybrid resin composites showed acceptable clinical durability in Class II restorations during the 10-year follow-up period, with an overall survival rate of >97.8%. Higher rates of failures and deficiencies were observed with the Renew (fracture) and Gradia Direct Posterior (color match), respectively.
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Affiliation(s)
- Edina Lempel
- Department of Restorative Dentistry and Periodontology, University of Pécs, Pécs, Hungary.
| | - Ákos Tóth
- Faculty of Sciences, University of Pécs, Pécs, Hungary
| | - Tamás Fábián
- Department of Restorative Dentistry and Periodontology, University of Pécs, Pécs, Hungary
| | - Károly Krajczár
- Department of Restorative Dentistry and Periodontology, University of Pécs, Pécs, Hungary
| | - József Szalma
- Department of Oral and Maxillofacial Surgery, University of Pécs, Pécs, Hungary
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30
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Kuper NK, van de Sande FH, Opdam NJM, Bronkhorst EM, de Soet JJ, Cenci MS, Huysmans MCDJNM. Restoration materials and secondary caries using an in vitro biofilm model. J Dent Res 2014; 94:62-8. [PMID: 25297114 DOI: 10.1177/0022034514553245] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
This in vitro study investigated whether restoration materials and adhesives influence secondary caries formation in gaps using a short-term in vitro biofilm model. Sixty enamel-dentin blocks were restored with 6 different restoration materials with or without adhesives (n = 10 per group) with a gap: 1) Clearfil AP-X composite, 2) Clearfil AP-X composite + SE Bond, 3) Clearfil AP-X composite + ProtectBond, 4) Filtek Silorane composite, 5) Filtek Silorane composite + Silorane System adhesive, or 6) Tytin amalgam. Specimens were subjected to an intermittent 1% sucrose biofilm model for 20 days to create artificial caries lesions. Lesion progression in the enamel-dentin next to the different materials was measured in lesion depth (LD) and mineral loss (ML) using transversal wavelength independent microradiography (T-WIM). A regression analysis was used to compare the LD and ML of the different restoration materials at 4 measurement locations: 1 location at the surface of the enamel, 1 location at the wall of the enamel, and 2 locations at the wall of the dentin. A statistically significant effect of AP-X composite with Protect Bond was found for LD and ML at the WallDentin1 location, leading to less advanced wall lesions. An additional finding was that gap size was also statistically significant at the 2 wall locations in dentin, leading to increasing lesion progression with wider gaps. In conclusion, adhesives can influence wall lesion development in gaps. Protect Bond showed significantly less caries progression compared to bare restoration materials or other adhesives in this short-term in vitro biofilm model.
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Affiliation(s)
- N K Kuper
- College of Dental Sciences, Department of Preventive and Restorative Dentistry, Radboud University Medical Center, Nijmegen, the Netherlands
| | - F H van de Sande
- School of Dentistry, Federal University of Pelotas, Pelotas, Brazil
| | - N J M Opdam
- College of Dental Sciences, Department of Preventive and Restorative Dentistry, Radboud University Medical Center, Nijmegen, the Netherlands
| | - E M Bronkhorst
- College of Dental Sciences, Department of Preventive and Restorative Dentistry, Radboud University Medical Center, Nijmegen, the Netherlands
| | - J J de Soet
- Department of Preventive Dentistry, Academic Centre for Dentistry Amsterdam (ACTA), University of Amsterdam and VU University, Amsterdam, the Netherlands
| | - M S Cenci
- School of Dentistry, Federal University of Pelotas, Pelotas, Brazil
| | - M C D J N M Huysmans
- College of Dental Sciences, Department of Preventive and Restorative Dentistry, Radboud University Medical Center, Nijmegen, the Netherlands
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31
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Chen WC, Ko CL, Wu HY, Lai PL, Shih CJ. Thermal cycling effects on adhesion of resin-bovine enamel junction among different composite resins. J Mech Behav Biomed Mater 2014; 38:105-13. [PMID: 25047352 DOI: 10.1016/j.jmbbm.2014.07.003] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2014] [Revised: 06/26/2014] [Accepted: 07/01/2014] [Indexed: 11/17/2022]
Abstract
Thermal cycling is used to mimic the changes in oral cavity temperature experienced by composite resins when used clinically. The purpose of this study is to assess the thermal cycling effects of in-house produced composite resin on bonding strength. The dicalcium phosphate anhydrous filler surfaces are modified using nanocrystals and silanization (w/NP/Si). The resin is compared with commercially available composite resins Filtek Z250, Z350, and glass ionomer restorative material GIC Fuji-II LC (control). Different composite resins were filled into the dental enamel of bovine teeth. The bond force and resin-enamel junction graphical structures of the samples were determined after thermal cycling between 5 and 55°C in deionized water for 600 cycles. After thermal cycling, the w/NP/Si 30wt%, 50wt% and Filtek Z250, Z350 groups showed higher shear forces than glass ionomer GIC, and w/NP/Si 50wt% had the highest shear force. Through SEM observations, more of the fillings with w/NP/Si 30wt% and w/NP/Si 50wt% groups flowed into the enamel tubule, forming closed tubules with the composite resins. The push-out force is proportional to the resin flow depth and uniformity. The push-out tubule pore and resin shear pattern is the most uniform and consistent in the w/NP/Si 50wt% group. Accordingly, this developed composite resin maintains great mechanical properties after thermal cycling. Thus, it has the potential to be used in a clinical setting when restoring non-carious cervical lesions.
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Affiliation(s)
- Wen-Cheng Chen
- Advanced Medical Devices and Composites Laboratory, Department of Fiber and Composite Materials, College of Engineering, Feng Chia University, Taichung, 40724 Taiwan, ROC.
| | - Chia-Ling Ko
- Advanced Medical Devices and Composites Laboratory, Department of Fiber and Composite Materials, College of Engineering, Feng Chia University, Taichung, 40724 Taiwan, ROC; Dental Medical Devices and Materials Research Center, College of Dental Medicine, Kaohsiung Medical University, Kaohsiung 807, Taiwan, ROC
| | - Hui-Yu Wu
- Advanced Medical Devices and Composites Laboratory, Department of Fiber and Composite Materials, College of Engineering, Feng Chia University, Taichung, 40724 Taiwan, ROC; Dental Medical Devices and Materials Research Center, College of Dental Medicine, Kaohsiung Medical University, Kaohsiung 807, Taiwan, ROC
| | - Pei-Ling Lai
- Dental Medical Devices and Materials Research Center, College of Dental Medicine, Kaohsiung Medical University, Kaohsiung 807, Taiwan, ROC
| | - Chi-Jen Shih
- Department of Fragrance and Cosmetics Science, Kaohsiung Medical University, Kaohsiung 807, Taiwan, ROC
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32
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Kuper NK, Opdam NJM, Ruben JL, de Soet JJ, Cenci MS, Bronkhorst EM, Huysmans MCDNJM. Gap size and wall lesion development next to composite. J Dent Res 2014; 93:108S-113S. [PMID: 24801597 DOI: 10.1177/0022034514534262] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
This in situ study investigated whether there is a relationship between gap size and wall lesion development in dentin next to 2 composite materials, and whether a clinically relevant threshold for the gap size could be established. For 21 days, 14 volunteers wore a modified occlusal splint containing human dentin samples with 5 different interfaces: 4 gaps of 50 µm, 100 µm, 200 µm, or 400 µm and 1 non-bonded interface without a gap. Eight times a day, the splint with samples was dipped in a 20% sucrose solution for 10 minutes. Before and after caries development, specimens were imaged with transversal wavelength-independent microradiography (T-WIM), and lesion depth (LD) and mineral loss (ML) were calculated at the 5 different interfaces. After correction for the confounder location (more mesial or distal), a paired t test clustered within volunteers was performed for comparison of gap widths. Results showed no trend for a relationship between the corrected lesion depth and the gap size. None of the differences in lesion depth for the different gap sizes was statistically significant. Also, the composite material (AP-X or Filtek Supreme) gave no statistically significant differences in lesion depth and mineral loss. A minimum gap size could not be established, although, in a non-bonded interface without a measurable gap, wall lesion development was never observed.
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Affiliation(s)
- N K Kuper
- College of Dental Sciences, Department of Preventive and Restorative Dentistry, Radboud University Medical Center, the Netherlands
| | - N J M Opdam
- College of Dental Sciences, Department of Preventive and Restorative Dentistry, Radboud University Medical Center, the Netherlands
| | - J L Ruben
- College of Dental Sciences, Department of Preventive and Restorative Dentistry, Radboud University Medical Center, the Netherlands
| | - J J de Soet
- Department of Preventive Dentistry, Academic Centre for Dentistry Amsterdam (ACTA), University of Amsterdam and VU University, Amsterdam, the Netherlands
| | - M S Cenci
- Federal University of Pelotas, School of Dentistry, Gonçalves Chaves, 457, 5th floor, Pelotas, 96015560, Brazil
| | - E M Bronkhorst
- College of Dental Sciences, Department of Preventive and Restorative Dentistry, Radboud University Medical Center, the Netherlands
| | - M C D N J M Huysmans
- College of Dental Sciences, Department of Preventive and Restorative Dentistry, Radboud University Medical Center, the Netherlands
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Frese C, Wolff D, Staehle HJ. Proximal Box Elevation With Resin Composite and the Dogma of Biological Width: Clinical R2-Technique and Critical Review. Oper Dent 2014; 39:22-31. [DOI: 10.2341/13-052-t] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
SUMMARY
Provided that moisture control is possible, today's resin composite materials can be applied successfully in the restorative treatment of extensively decayed teeth. This suggests that restorative margins will be increasingly located below the cementoenamel junction, probably invading biological width. The recently introduced technique of proximal box elevation (PBE) offers the possibility of performing a stepwise elevation of deep proximal cavities to create more favorable preparation margins for direct or indirect restorations. Clinical instructions for the restoration of extensively damaged teeth are given through this presentation. A two-step R2-technique will be shown, and a critical review of the dogma of biological width will be presented.
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Affiliation(s)
- C Frese
- Cornelia Frese, Dr. med. dent., senior dentist, University Hospital Heidelberg, Department of Conservative Dentistry, Heidelberg, Germany
| | - D Wolff
- Diana Wolff, Dr.med.dent, University of Heidelberg, Department of Conservative Dentistry, Heidelberg, Germany
| | - HJ Staehle
- Hans Joerg Staehle, Prof.Dr.med., Dr.med.dent., head of department, University of Heidelberg, Department of Conservative Dentistry, Heidelberg, Germany
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Kopperud SE, Tveit AB, Gaarden T, Sandvik L, Espelid I. Longevity of posterior dental restorations and reasons for failure. Eur J Oral Sci 2013; 120:539-48. [PMID: 23167471 DOI: 10.1111/eos.12004] [Citation(s) in RCA: 167] [Impact Index Per Article: 15.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/01/2012] [Indexed: 11/28/2022]
Abstract
Tooth-coloured restorative materials are being used increasingly more often in Class II preparations in permanent teeth. Using a practice-based study design, we aimed to assess the survival time of Class II restorations and to identify factors relevant to their longevity. Class II restorations (n = 4,030), consisting of resin composites (81.5%), compomers (12.7%), amalgams (4.6%), and glass-ionomer cement restorations (1.2%), were placed in 1,873 patients with a median age of 15 yr. In total, 92.7% of restorations were placed due to primary caries and 5.8% were replacements. After an average follow-up period of 4.6 yr, 61.6% of the restorations were successful, 11.2% had failed, and 27.2% were not available for evaluation (owing to patient drop-out). The mean annual failure rate was 2.9% for resin-composite restorations and 1.6% for amalgams. For resin-composite restorations, secondary caries was the most common reason for replacement (73.9%), followed by loss (8.0%), fracture (5.3%), and marginal defects (2.4%). Multilevel Cox-regression analyses identified young age of the patient, high previous caries experience, deep cavities, and saucer-shaped preparation technique as predisposing to shorter longevity of resin-composite restorations. One brand of resin composite had a shorter survival time than the others.
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35
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Nanohybrid vs. fine hybrid composite in extended class II cavities: 8-year results. Clin Oral Investig 2013; 18:125-37. [DOI: 10.1007/s00784-013-0957-8] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2012] [Accepted: 02/21/2013] [Indexed: 10/27/2022]
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36
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Kuper N, Opdam N, Bronkhorst E, Ruben J, Huysmans M. Hydrodynamic Flow through Loading and in vitro Secondary Caries Development. J Dent Res 2013; 92:383-7. [DOI: 10.1177/0022034513481040] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
This in vitro study investigated the effect of hydrodynamic flow through mechanical loading on development of secondary caries lesions. Forty-eight bovine tooth specimens (enamel and dentin; sizes 3.2 x 3.2 x 2.0 mm) were restored with resin-composite on polystyrene bars; 18 samples were bonded, and 30 were not bonded. Specimens were suspended in a lactic acid solution (pH = 5; 14 days) in a modified brushing machine, and artificial caries lesions were formed. During caries development, specimens were mechanically loaded at the surface of the polystyrene bar, bent so that the tooth- composite interfaces were subjected to opening forces (16x/min). Loads applied were either none (Control Bonded, CB, n = 6; and Control Non-bonded, CNB, n = 6), 200 gr (NB200, n = 12), or 350 gr (NB350 and B350, both n = 12). Before and after caries development, specimens were imaged with transverse wavelength-independent microradiography (T-WIM), and lesion depth (LD) and mineral loss (ML) were calculated at 4 different locations. An independent t test was used to compare the LD and ML at the 4 different locations. A statistically significant effect of the level of loading (comparing groups NB200 and NB350) and of bonding (comparing groups NB350 and B350) could be observed, with a higher load and absence of bonding leading to more advanced lesions.
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Affiliation(s)
- N.K. Kuper
- College of Dental Sciences, Department of Preventive and Restorative Dentistry, Radboud University Nijmegen Medical Centre, P.O. Box 9101, NL 6500 HB Nijmegen, The Netherlands
| | - N.J.M. Opdam
- College of Dental Sciences, Department of Preventive and Restorative Dentistry, Radboud University Nijmegen Medical Centre, P.O. Box 9101, NL 6500 HB Nijmegen, The Netherlands
| | - E.M. Bronkhorst
- College of Dental Sciences, Department of Preventive and Restorative Dentistry, Radboud University Nijmegen Medical Centre, P.O. Box 9101, NL 6500 HB Nijmegen, The Netherlands
| | - J.L. Ruben
- College of Dental Sciences, Department of Preventive and Restorative Dentistry, Radboud University Nijmegen Medical Centre, P.O. Box 9101, NL 6500 HB Nijmegen, The Netherlands
| | - M.C.D.N.J.M. Huysmans
- College of Dental Sciences, Department of Preventive and Restorative Dentistry, Radboud University Nijmegen Medical Centre, P.O. Box 9101, NL 6500 HB Nijmegen, The Netherlands
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Opdam NJ, Bronkhorst EM, Loomans BA, Huysmans MCD. Longevity of repaired restorations: A practice based study. J Dent 2012; 40:829-35. [DOI: 10.1016/j.jdent.2012.06.007] [Citation(s) in RCA: 96] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2012] [Revised: 06/27/2012] [Accepted: 06/29/2012] [Indexed: 11/25/2022] Open
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38
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The influence of approximal restoration extension on the development of secondary caries. Br Dent J 2012. [DOI: 10.1038/sj.bdj.2012.338] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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