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Hagino R, Mine A, Aoki-Matsumoto M, Miura J, Yumitate M, Ban S, Ishida M, Takaishi M, Van Meerbeek B, Yatani H, Ishigaki S. Effect of filler contents on the bond strength of CAD/CAM resin crowns: New resin primer versus conventional silane agents. J Prosthodont Res 2024; 68:283-289. [PMID: 37286502 DOI: 10.2186/jpr.jpr_d_22_00301] [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] [Indexed: 06/09/2023]
Abstract
Purpose This study aims to evaluate the effects of resin primers containing methyl methacrylate (MMA) and silane agent on the bonding effectiveness of indirect resin composite blocks with three different filler contents.Methods A commercially available computer-aided design/computer-aided manufacturing (CAD/CAM) resin composite block and two experimental resin composite blocks with different filler contents were alumina-blasted and two surface treatments (primer and silane agent) were applied. The resin cement was built up, and the micro-tensile bond strength (μTBS) was measured after 24 hours, 1 month or 3 months of water storage (n = 24 per group). The fracture surfaces after μTBS measurements and resin block/cement interface were observed by scanning electron microscopy (SEM).Results The primer treatment group showed a significantly higher bond strength than the silane group only in F0 (filler content 0 wt%) group (P < 0.001). In the primer group, F0 and F41 (filler content 41 wt%) groups showed significantly higher bond strengths than F82 (filler content 82 wt%) group (P < 0.001). In contrast, in the silane group, F41 group showed significantly higher bond strength than F0 and F82 groups (P < 0.001), and F82 group showed significantly higher bond strength than F0 group (P < 0.001). SEM revealed that the matrix resin was partially destroyed on the fracture surface of the primer group, and an uneven interface surface was observed compared with that of the silane group.Conclusions MMA-containing primers showed higher bonding effectiveness to CAD/CAM resin composite blocks than the silane treatment.
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Affiliation(s)
- Ryosuke Hagino
- Department of Fixed Prosthodontics, Osaka University Graduate School of Dentistry, Osaka, Japan
| | - Atsushi Mine
- Department of Fixed Prosthodontics, Osaka University Graduate School of Dentistry, Osaka, Japan
| | - Mariko Aoki-Matsumoto
- Department of Restorative Dentistry, Hokkaido University Graduate School of Dental Medicine, Sapporo, Japan
- BIOMAT & University Hospitals Leuven, Department of Oral Health Sciences, KU Leuven (University of Leuven), Leuven, Belgium
| | - Jiro Miura
- Division for Interdisciplinary Dentistry, Osaka University Dental Hospital, Osaka, Japan
| | - Masahiro Yumitate
- Department of Fixed Prosthodontics, Osaka University Graduate School of Dentistry, Osaka, Japan
| | - Shintaro Ban
- Department of Fixed Prosthodontics, Osaka University Graduate School of Dentistry, Osaka, Japan
| | - Masaya Ishida
- Department of Fixed Prosthodontics, Osaka University Graduate School of Dentistry, Osaka, Japan
| | - Munechika Takaishi
- Department of Fixed Prosthodontics, Osaka University Graduate School of Dentistry, Osaka, Japan
| | - Bart Van Meerbeek
- BIOMAT & University Hospitals Leuven, Department of Oral Health Sciences, KU Leuven (University of Leuven), Leuven, Belgium
| | - Hirofumi Yatani
- Department of Fixed Prosthodontics, Osaka University Graduate School of Dentistry, Osaka, Japan
| | - Shoichi Ishigaki
- Department of Fixed Prosthodontics, Osaka University Graduate School of Dentistry, Osaka, Japan
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Didangelou P, Dionysopoulos D, Papadopoulos C, Strakas D, Mourouzis P, Tolidis K. Evaluation of repair bond strength of a dental CAD/CAM resin composite after surface treatment with two Er,Cr:YSGG laser protocols following artificial aging. J Mech Behav Biomed Mater 2023; 146:106101. [PMID: 37659166 DOI: 10.1016/j.jmbbm.2023.106101] [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: 07/16/2023] [Revised: 08/27/2023] [Accepted: 08/29/2023] [Indexed: 09/04/2023]
Abstract
The aim of the present study was to evaluate the impact of two Er,Cr:YSGG laser surface treatments on the repair bond strength of a dental CAD/CAM resin composite (Brilliant Crios) after artificial aging. Twenty-four resin-based CAD/CAM blocks were cut and 48 rectangular slabs (3 x 12 x 14 mm) were prepared. Preliminary SEM observations indicated the most favorable laser settings regarding surface modification of the tested restorative material. The CAD/CAM specimens were then divided into 4 groups (n=12) based on their surface pretreatment: no treatment, air abraded with 50-μm Al2O3 particles, and laser irradiated with two different protocols using Er,Cr:YSGG laser with average power 3.5 and 4.5 W, pulse repetition rate 35 and 50 Hz, and pulse energy 100 and 90 mJ, respectively. After surface treatments each group followed a bonding protocol with silane and a flowable resin composite was used to prepare 48 microrods. Half of the microrods of each group were subjected on shear bond strength (SBS) test (chisel-shaped blade, load cell of 500 N, crosshead speed of 1 mm/min) after 24 h, while the other half underwent artificial aging (15,000 cycles, 5-55 °C) and then SBS test. The debonded specimens were examined under an optical microscope to determine the failure mode. All specimens were also evaluated using SEM to assess the surface topography after the treatments. The results showed that SBS significantly decreased after thermocycling in all the experimental groups (p<0.05). Control group presented much lower SBS values than the other groups after both 24 h and thermocycling (p<0.05). The highest values of SBS exhibited air-abrasion group (p<0.05), followed by the two laser groups, which did not differ to each other (p>0.05). The results of the current study indicated that Er,Cr:YSGG laser irradiation can be an alternative treatment for repairing the tested resin-based CAD/CAM restorative material.
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Affiliation(s)
- Pavlina Didangelou
- Department of Operative Dentistry, Faculty of Dentistry, School of Health Sciences, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Dimitrios Dionysopoulos
- Department of Operative Dentistry, Faculty of Dentistry, School of Health Sciences, Aristotle University of Thessaloniki, Thessaloniki, Greece.
| | - Constantinos Papadopoulos
- Department of Operative Dentistry, Faculty of Dentistry, School of Health Sciences, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Dimitrios Strakas
- Department of Operative Dentistry, Faculty of Dentistry, School of Health Sciences, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Petros Mourouzis
- Department of Operative Dentistry, Faculty of Dentistry, School of Health Sciences, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Kosmas Tolidis
- Department of Operative Dentistry, Faculty of Dentistry, School of Health Sciences, Aristotle University of Thessaloniki, Thessaloniki, Greece
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Calheiros-Lobo MJ, Vieira T, Carbas R, da Silva LFM, Pinho T. Effectiveness of Self-Adhesive Resin Luting Cement in CAD-CAM Blocks-A Systematic Review and Meta-Analysis. MATERIALS (BASEL, SWITZERLAND) 2023; 16:2996. [PMID: 37109832 PMCID: PMC10140979 DOI: 10.3390/ma16082996] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/27/2023] [Revised: 04/07/2023] [Accepted: 04/08/2023] [Indexed: 06/19/2023]
Abstract
Self-adhesive resin cements (SARCs) are used because of their mechanical properties, ease of cementation protocols, and lack of requirements for acid conditioning or adhesive systems. SARCs are generally dual-cured, photoactivated, and self-cured, with a slight increase in acidic pH, allowing self-adhesiveness and increasing resistance to hydrolysis. This systematic review assessed the adhesive strength of SARC systems luted to different substrates and computer-aided design and manufacturing (CAD/CAM) ceramic blocks. The PubMed/MedLine and Science Direct databases were searched using the Boolean formula [((dental or tooth) AND (self-adhesive) AND (luting or cement) AND CAD-CAM) NOT (endodontics or implants)]. Of the 199 articles obtained, 31 were selected for the quality assessment. Lava Ultimate (resin matrix filled with nanoceramic) and Vita Enamic (polymer-infiltrated ceramic) blocks were the most tested. Rely X Unicem 2 was the most tested resin cement, followed by Rely X Unicem > Ultimate > U200, and μTBS was the test most used. The meta-analysis confirmed the substrate-dependent adhesive strength of SARCs, with significant differences between them and between SARCs and conventional resin-based adhesive cement (α < 0.05). SARCs are promising. However, one must be aware of the differences in the adhesive strengths. An appropriate combination of materials must be considered to improve the durability and stability of restorations.
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Affiliation(s)
- Maria João Calheiros-Lobo
- UNIPRO—Oral Pathology and Rehabilitation Research Unit, University Institute of Health Sciences (IUCS), Cooperativa de Ensino Superior Politécnico e Universitário (CESPU), Rua Central de Gandra 1317, 4585-116 Gandra, Portugal
- Conservative Dentistry, Department of Dental Sciences, University Institute of Health Sciences (IUCS), Cooperativa de Ensino Superior Politécnico e Universitário (CESPU), Rua Central de Gandra 1317, 4585-116 Gandra, Portugal
| | - Tatiana Vieira
- UNIPRO—Oral Pathology and Rehabilitation Research Unit, University Institute of Health Sciences (IUCS), Cooperativa de Ensino Superior Politécnico e Universitário (CESPU), Rua Central de Gandra 1317, 4585-116 Gandra, Portugal
| | - Ricardo Carbas
- Department of Mechanical Engineering, Faculty of Engineering, University of Porto, 4200-465 Porto, Portugal
- INEGI—Institute of Science and Innovation in Mechanical and Industrial Engineering, University of Porto, 4200-465 Porto, Portugal
| | - Lucas F. M. da Silva
- Department of Mechanical Engineering, Faculty of Engineering, University of Porto, 4200-465 Porto, Portugal
- INEGI—Institute of Science and Innovation in Mechanical and Industrial Engineering, University of Porto, 4200-465 Porto, Portugal
| | - Teresa Pinho
- UNIPRO—Oral Pathology and Rehabilitation Research Unit, University Institute of Health Sciences (IUCS), Cooperativa de Ensino Superior Politécnico e Universitário (CESPU), Rua Central de Gandra 1317, 4585-116 Gandra, Portugal
- IBMC—Instituto Biologia Molecular e Celular, i3S—Instituto de Inovação e Investigação em Saúde, Institute for Molecular and Cell Biology (IBMC), Institute of Innovation and Investigation in Health (i3S), University of Porto, 4200-135 Porto, Portugal
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Fathy H, Hamama HH, El-Wassefy N, Mahmoud SH. Effect of different surface treatments on resin-matrix CAD/CAM ceramics bonding to dentin: in vitro study. BMC Oral Health 2022; 22:635. [PMID: 36564766 PMCID: PMC9789622 DOI: 10.1186/s12903-022-02674-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2022] [Accepted: 12/16/2022] [Indexed: 12/24/2022] Open
Abstract
BACKGROUND Evaluating the effect of different surface treatment methods on the micro-tensile bond strength (µTBS) of two different resin-matrix computer-aided design/computer-aided manufacturing (CAD/CAM) ceramics (RMCs). METHODS A standardized inlay preparations were performed on 100 intact maxillary premolars. According to the type of the restorative material, the teeth were randomly divided into two equally sized groups (n = 50): (polymer-infiltrated ceramic (Vita Enamic) and resin-based composites (Lava Ultimate)). The inlays were fabricated using CAD/CAM technology. In each group, the specimens were randomly assigned to five subgroups (n = 10) according to the surface treatment method: group 1 used was the control group (no surface treatment); group 2, was treated with air abrasion with 50 μm Al2O3 (A) and universal adhesive (UA); group 3, was treated with air abrasion with 50 μm Al2O3 (A) and silane coupling agent (S); group 4, was treated with hydrofluoric acid (HF) and universal adhesive (UA) and group 5, was treated with Hydrofluoric acid (HF) + silane coupling agent (S). The inlays were then cemented to their respective preparations using dual-cure self-adhesive resin cement (RelyX U200, 3 M ESPE) according to the manufacturer's instructions. The µTBS test was conducted in all groups, and stereomicroscope and scanning electron microscope were used to inspect the failure mode. The data were statistically analyzed using a two-way analysis of variance (ANOVA) and Tukey's post-hoc multiple comparison tests at a significance level of p < 0.05. RESULTS Surface treatments significantly increased the µTBS of the materials compared to the control group (p < 0.05). For CAD/CAM RBCs, the µTBS value highest in group 2 whereas, for PICN, the µTBS value was highest in group 3. Cohesive failure of CAD/CAM restorative material was the most predominant mode of failure in all treated groups, whereas adhesive failure at restoration-cement interface was the most predominant failure mode in the control group. CONCLUSION Surface treatments increase the µTBS of resin-matrix CAD/CAM ceramics to tooth structure. Air abrasion followed by universal adhesive and hydrofluoric acid followed by silane application appears to be the best strategies for optimizing the bond strength of CAD/CAM RBCs and PICN respectively.
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Affiliation(s)
- Hanan Fathy
- Conservative Dentistry Department, Faculty of Dentistry, Mansoura University, Mansoura, 35516, Egypt
| | - Hamdi H Hamama
- Conservative Dentistry Department, Faculty of Dentistry, Mansoura University, Mansoura, 35516, Egypt.
| | - Noha El-Wassefy
- Dental Biomaterials Science Department, Faculty of Dentistry, Mansoura University, Mansoura, Egypt
| | - Salah H Mahmoud
- Conservative Dentistry Department, Faculty of Dentistry, Mansoura University, Mansoura, 35516, Egypt
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Kuroishi G, Yotsuya M, Nomoto S, Hisanaga R, Sato T. Effects of Cuspal Inclination and Luting Agent on Fracture Load Values in Composite Resin CAD/CAM Crowns. THE BULLETIN OF TOKYO DENTAL COLLEGE 2022; 63:55-66. [PMID: 35613862 DOI: 10.2209/tdcpublication.2020-0017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
The purpose of this study was to evaluate whether change in cuspal inclination influences the fracture load values of composite resin computer-aided design/computer-aided manufacturing (CAD/CAM) crowns. Abutment teeth and CAD/CAM crowns were prepared as they would be for treating a mandibular first premolar with two cusps. The CAD/CAM crowns were designed so that 1) the principal stress lines would be radially distributed from the two points of contact with the indenter to the occlusal area of the abutment (Type I), or 2) the principal stress lines would pass outside the occlusal area of the abutment (Types II and III). The CAD/CAM crowns were mounted on the abutments using one of two types of resin or polycarboxylate cement. Fracture load values were measured using a universal tester. The Type I CAD/CAM crowns exhibited the highest mean fracture load value, followed by the Type II crowns and then the Type III crowns, with significant differences seen between all types (p<0.05). The luting agent used (resin or polycarboxylate cement) showed no effect on the fracture load value. With the Type II and Type III crowns, significant differences in the fracture load value were observed between the Super-Bond and Hy-Bond polycarboxylate cement groups (p<0.05).
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Affiliation(s)
- Gen Kuroishi
- Department of Fixed Prosthodontics, Tokyo Dental College
| | - Mamoru Yotsuya
- Department of Fixed Prosthodontics, Tokyo Dental College
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Takahashi K, Yoshiyama T, Yokoyama A, Shimada Y, Yoshiyama M. Effect of decontamination materials on bond strength of saliva-contaminated CAD/CAM resin block and dentin. Dent Mater J 2022; 41:601-607. [PMID: 35418548 DOI: 10.4012/dmj.2021-268] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
The aim of this study was to evaluate the effect of decontamination agents against saliva contamination on the bonding of computer-aided design/computer-aided manufacturing (CAD/CAM) resin block. Three commercially available decontamination agents were used in this study. The samples were subjected to microtensile bond strength test. A saliva protein staining test was performed by the pigment binding method to investigate the effect of removing saliva protein. All the decontamination agents could significantly restore the bond strength from the saliva contamination, and KATANA Cleaner showed no significant difference with the control. From the results of the saliva protein staining test, KATANA Cleaner showed higher removal effect of saliva protein for CAD/CAM resin block surface than the other materials due to the surface active effect of MDP salt. It was suggested that cleaners containing MDP salt were more effective in removing artificial saliva contamination than cleaners containing other ingredients for CAD/CAM resin blocks.
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Affiliation(s)
- Kei Takahashi
- Department of Operative Dentistry, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University
| | - Tomohiro Yoshiyama
- Department of Operative Dentistry, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University
| | - Akihito Yokoyama
- Department of Operative Dentistry, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University
| | - Yasushi Shimada
- Department of Cariology and Operative Dentistry, Graduate school of Medical and Dental Sciences, Tokyo Medical and Dental University
| | - Masahiro Yoshiyama
- Department of Operative Dentistry, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University
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Inomata M, Harada A, Kasahara S, Kusama T, Ozaki A, Katsuda Y, Egusa H. Potential complications of CAD/CAM-produced resin composite crowns on molars: A retrospective cohort study over four years. PLoS One 2022; 17:e0266358. [PMID: 35390093 PMCID: PMC8989285 DOI: 10.1371/journal.pone.0266358] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2021] [Accepted: 03/18/2022] [Indexed: 12/02/2022] Open
Abstract
Purpose Evaluation of the clinical performance of computer-aided design/computer-aided manufacturing-produced resin composite crowns (CAD/CAM composite crowns) on molars with a particular focus on placement location. Methods A retrospective cohort study was performed based on the clinical records of patients with CAD/CAM composite crowns on molars (June 2016 to March 2021). The hazard ratios (HRs) and 95% confidence intervals (95% CIs) were estimated based the Cox proportional hazard model to evaluate the effect of tooth location on complication type and occurrence. Covariates included crown location (maxilla/mandible, distalmost tooth/not distalmost tooth, and first molar/second or third molar) and endodontically treated (nonvital) or untreated (vital) tooth. Results Overall, 362 crowns were evaluated (mean follow-up: 378 days, median: 286 days), and 106 crowns (29.3%) showed complications, most frequently crown debonding. The cumulative success and survival rates were 70.9% and 93.7%, respectively, after 1 year and 49.5% and 86.5%, respectively, after 3 years. There was no significant difference in the HRs and log-rank tests in the Kaplan–Meier curves based on crown location parameters (P > 0.05). However, placement on vital teeth was associated with higher risks than on nonvital teeth (HR, 1.55; 95% CI, 1.03–2.23). In addition, the cement as a covariate yielded a high HR. Conclusions The location of CAD/CAM composite molar crowns is unlikely a risk factor for complications; therefore, these crowns can be clinically applied to all molars. However, the application of such molar crowns to vital teeth and the use of a cement other than adhesive resin cement present risks.
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Affiliation(s)
- Miyu Inomata
- Division of Molecular and Regenerative Prosthodontics, Tohoku University Graduate School of Dentistry, Sendai, Japan
| | - Akio Harada
- Division of Molecular and Regenerative Prosthodontics, Tohoku University Graduate School of Dentistry, Sendai, Japan
- * E-mail: (AH); (HE)
| | - Shin Kasahara
- Division of Molecular and Regenerative Prosthodontics, Tohoku University Graduate School of Dentistry, Sendai, Japan
| | - Taro Kusama
- Division for Regional Community Development, Liaison Center for Innovative Dentistry, Tohoku University Graduate School of Dentistry, Sendai, Japan
| | - Akane Ozaki
- Division of Molecular and Regenerative Prosthodontics, Tohoku University Graduate School of Dentistry, Sendai, Japan
| | - Yusuke Katsuda
- Division of Molecular and Regenerative Prosthodontics, Tohoku University Graduate School of Dentistry, Sendai, Japan
| | - Hiroshi Egusa
- Division of Molecular and Regenerative Prosthodontics, Tohoku University Graduate School of Dentistry, Sendai, Japan
- Division for Regional Community Development, Liaison Center for Innovative Dentistry, Tohoku University Graduate School of Dentistry, Sendai, Japan
- * E-mail: (AH); (HE)
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Beyabanaki E, Ashtiani RE, Feizy M, Zandinejad A. Evaluation of Micro-Shear Bond Strength of Four Different CAD-CAM Polymer-Infiltrated Ceramic Materials after Thermocycling. J Prosthodont 2021; 31:623-628. [PMID: 34890485 DOI: 10.1111/jopr.13469] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/02/2021] [Indexed: 11/30/2022] Open
Abstract
PURPOSE To evaluate the bond strength of three monolithic hybrid ceramics/resin nanoceramics and a zirconia-reinforced lithium silicate to resin cement after thermocycling. MATERIALS AND METHODS Using four materials, including Vita Enamic (VITA Zahnfabrik), Lava Ultimate (3M ESPE), Crystal Ultra (Digital Dental), and Vita Suprinity (VITA Zahnfabrik), 64 specimens were prepared with dimensions of 4mm×3mm×1.5mm. Vita Suprinity samples were sintered at 840°C for 8 min. After polishing and cleaning all the samples in each group (n = 16), they were subjected to their recommended surface treatment: 10% hydrofluoric acid for Vita Enamic (60s) and Vita Suprinity (20s); air abrasion of Lava Ultimate and Crystal Ultra with 50μ Al2 O3 particles. Then, tygon tubes were filled with dual cure resin cement (Panavia F2.0), cured and then subjected to thermal cycling (2000 cycles; 5-55°C). The micro-shear bond strength was measured using micro-tensile testing machine. The data were analyzed using Welch and Games-Howell tests (α = 0.05). The mode of failure was also evaluated using a stereomicroscope. RESULTS The highest and the lowest mean micro-shear bond strength belonged to the Crystal Ultra (7.71 ±1.54 MPa) and Vita Suprinity (4.73 ±1.87 MPa) groups, respectively. The differences between groups were significant and Crystal Ultra had higher bond strength in comparison to all three materials (p<.05). CONCLUSION Hybrid ceramics showed higher bond strength to resin cements in comparison to resin nanoceramics and zirconia-reinforced lithium silicate materials. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Elaheh Beyabanaki
- Assistant Professor, Department of Prosthodontics, School of Dentistry, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Reza Eftekhar Ashtiani
- Assistant Professor, Department of Prosthodontics, School of Dentistry, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | | | - Amirali Zandinejad
- Associate Professor and Program Director AEGD Residency, Comprehensive Dentistry Department, College of Dentistry, Texas A&M University, Dallas, TX
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Hagino R, Mine A, Matsumoto M, Yumitate M, Ban S, Yamanaka A, Ishida M, Miura J, Meerbeek BVAN, Yatani H. Combination of a silane coupling agent and resin primer reinforces bonding effectiveness to a CAD/CAM indirect resin composite block. Dent Mater J 2021; 40:1445-1452. [PMID: 34602585 DOI: 10.4012/dmj.2021-083] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
The effects of silanization and resin primer application on CAD/CAM indirect resin composite block bonding were investigated. KATANA AVENCIA P blocks (Kuraray Noritake Dental) were treated with a silane coupling agent and/or a resin primer. The contact angles (CAs) of resin primer were observed before and after silanization. Panavia V5 (Kuraray Noritake Dental) was built after each treatment. Bond strengths were measured, and the interface was analyzed by energy dispersive X-ray spectroscopy (EDS). The CA showed that silane treatment improved the wettability of the resin primer to the resin block. The combination treatment of the silane and resin primer showed significantly higher bond strength than no treatment, only in the silanization or resin primer group (p<0.001 each). EDS analysis showed that the resin primer penetrated both cement and block sides. The combination of the silane and resin primer improved bonding effectiveness between the resin block and resin cement.
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Affiliation(s)
- Ryosuke Hagino
- Department of Fixed Prosthodontics, Osaka University Graduate School of Dentistry
| | - Atsushi Mine
- Department of Fixed Prosthodontics, Osaka University Graduate School of Dentistry
| | - Mariko Matsumoto
- Department of Restorative Dentistry, Hokkaido University Graduate School of Dental Medicine.,KU Leuven (University of Leuven), Department of Oral Health Sciences, BIOMAT & UZ Leuven (University Hospitals Leuven), Dentistry
| | - Masahiro Yumitate
- Department of Fixed Prosthodontics, Osaka University Graduate School of Dentistry
| | - Shintaro Ban
- Department of Fixed Prosthodontics, Osaka University Graduate School of Dentistry
| | - Azusa Yamanaka
- Department of Fixed Prosthodontics, Osaka University Graduate School of Dentistry
| | - Masaya Ishida
- Department of Fixed Prosthodontics, Osaka University Graduate School of Dentistry
| | - Jiro Miura
- Division for Interdisciplinary Dentistry, Osaka University Dental Hospital
| | - Bart VAN Meerbeek
- KU Leuven (University of Leuven), Department of Oral Health Sciences, BIOMAT & UZ Leuven (University Hospitals Leuven), Dentistry
| | - Hirofumi Yatani
- Department of Fixed Prosthodontics, Osaka University Graduate School of Dentistry
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Effects of Immediate and Delayed Cementations for CAD/CAM Resin Block after Alumina Air Abrasion on Adhesion to Newly Developed Resin Cement. MATERIALS 2021; 14:ma14227058. [PMID: 34832458 PMCID: PMC8620113 DOI: 10.3390/ma14227058] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/25/2021] [Revised: 11/17/2021] [Accepted: 11/18/2021] [Indexed: 11/24/2022]
Abstract
The purpose of this study was to evaluate the effect of one week of Computer-aided design/Computer-aided manufacturing (CAD/CAM) crown storage on the μTBS between resin cement and CAD/CAM resin composite blocks. The micro-tensile bond strength (μTBS) test groups were divided into 4 conditions. There are two types of CAD/CAM resin composite blocks, namely A block and P block (KATANA Avencia Block and KATANA Avencia P Block, Kuraray Noritake Dental, Tokyo, Japan) and two types of resin cements. Additionally, there are two curing methods (light cure and chemical cure) prior to the μTBS test—Immediate: cementation was performed immediately; Delay: cementation was conducted after one week of storage in air under laboratory conditions. The effect of Immediate and Delayed cementations were evaluated by a μTBS test, surface roughness measurements, light intensity measurements, water sorption measurements and Scanning electron microscope/Energy dispersive X-ray spectrometry (SEM/EDS) analysis. From the results of the μTBS test, we found that Delayed cementation showed significantly lower bond strength than that of Immediate cementation for both resin cements and both curing methods using A block. There was no significant difference between the two types of resin cements or two curing methods. Furthermore, water sorption of A block was significantly higher than that of P block. Within the limitations of this study, alumina air abrasion of CAD/CAM resin composite restorations should be performed immediately before bonding at the chairside to minimize the effect of humidity on bonding.
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Kabetani T, Ban S, Mine A, Ishihara T, Nakatani H, Yumitate M, Yamanaka A, Ishida M, Matsumoto M, Meerbeek BV, Shintani A, Yatani H. Four-year clinical evaluation of CAD/CAM indirect resin composite premolar crowns using 3D digital data: Discovering the causes of debonding. J Prosthodont Res 2021; 66:402-408. [PMID: 34565767 DOI: 10.2186/jpr.jpr_d_20_00287] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
PURPOSE To analyze the causes of debonding of computer-aided design/computer-aided manufacturing (CAD/CAM) indirect resin composite premolar crowns with a focus on the morphological factors of the crown and abutment teeth. METHODS The clinical courses of 109 CAD/CAM indirect resin composite crowns were observed, and the patients' background characteristics, crown locations, luting methods, types of abutments, distal-most/non-distal-most molars, and types of resin blocks were confirmed. To investigate the influence of the morphology of the crown and abutment teeth, the 1) vertical dimension of the abutment teeth, 2) taper, and 3) thickness of the crown occlusal surface during events were measured from the three-dimensional digital data. The Kaplan-Meier method and multivariable Cox proportional hazard model were used for the statistical analyses. The nonlinearity of the effect of each comparison factor was included in the model. RESULTS Complications included 21 debonding cases, two crown fractures, five root fractures, and two core debondings. The cumulative no-debonding and no-crown-fracture rate over 1423 days (3 years and 11 months) was 77.4%. The multivariable Cox regression analysis revealed that the abutment teeth type of tooth (first or second premolar) (P = 0.02) and luting materials (P < 0.01) significantly influenced the debonding frequency. All morphological factors (1-3) significantly influenced the debonding. The hazard ratios and nonlinear graph indicated that the crown thickness was less effective than the vertical dimension and taper. CONCLUSIONS The combination analysis of clinical outcomes and 3D digital data revealed that preparation of the abutment is important for avoiding crown debonding.
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Affiliation(s)
- Tomoshige Kabetani
- Department of Fixed Prosthodontics, Osaka University Graduate School of Dentistry, Osaka
| | - Shintaro Ban
- Department of Fixed Prosthodontics, Osaka University Graduate School of Dentistry, Osaka
| | - Atsushi Mine
- Department of Fixed Prosthodontics, Osaka University Graduate School of Dentistry, Osaka
| | - Takuma Ishihara
- Department of Medical Statistics, Osaka City University Graduate School of Medicine and Faculty of Medicine, Osaka
| | - Hayaki Nakatani
- Department of Fixed Prosthodontics, Osaka University Graduate School of Dentistry, Osaka
| | - Masahiro Yumitate
- Department of Fixed Prosthodontics, Osaka University Graduate School of Dentistry, Osaka
| | - Azusa Yamanaka
- Department of Fixed Prosthodontics, Osaka University Graduate School of Dentistry, Osaka
| | - Masaya Ishida
- Department of Fixed Prosthodontics, Osaka University Graduate School of Dentistry, Osaka
| | - Mariko Matsumoto
- Department of Restorative Dentistry, Hokkaido University Graduate School of Dental Medicine.,BIOMAT & University Hospitals Leuven, Department of Oral Health Sciences, KU Leuven (University of Leuven)
| | - Bart Vam Meerbeek
- Department of Restorative Dentistry, Hokkaido University Graduate School of Dental Medicine.,BIOMAT & University Hospitals Leuven, Department of Oral Health Sciences, KU Leuven (University of Leuven)
| | - Ayumi Shintani
- Department of Medical Statistics, Osaka City University Graduate School of Medicine and Faculty of Medicine, Osaka
| | - Hirofumi Yatani
- Department of Fixed Prosthodontics, Osaka University Graduate School of Dentistry, Osaka
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12
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Oda Y, Takahashi R, Nikaido T, Tagami J. Influence of the resin-coating technique on the bonding performance of self-adhesive resin cements in single-visit computer-aided design/computer-aided manufacturing resin restorations. J ESTHET RESTOR DENT 2021; 34:721-728. [PMID: 34542233 DOI: 10.1111/jerd.12818] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2021] [Revised: 08/29/2021] [Accepted: 09/07/2021] [Indexed: 11/27/2022]
Abstract
OBJECTIVE This in vitro study investigated the influence of resin coating on the bonding performance of self-adhesive resin cements in single-visit computer-aided design (CAD)/computer-aided manufacturing (CAM) resin restorations. MATERIALS AND METHOD CAD/CAM resin (1.5-mm thick) was mounted on 20 noncoated and 20 resin-coated human dentin surfaces using dual-cured self-adhesive resin cements (Panavia SA Cement Plus or Panavia SA Cement Universal, Kuraray Noritake Dental) in either self-curing or dual-curing mode. These specimens were sectioned into beam-shaped sticks and subjected to microtensile bond strength tests after 24 h of water storage. The obtained data were statistically analyzed with three-way analysis of variance (ANOVA) and t tests (α = 0.05). RESULTS The three-way ANOVA results revealed the significant influence of resin coating, resin cement, and curing mode. Resin coating and light curing led to higher bond strengths in almost all groups. Resin-coated dentin with Panavia SA Cement Plus exhibited a mean bond strength greater than 35 MPa in both self-curing and dual-curing modes. CONCLUSIONS In single-visit CAD/CAM resin restorations, resin coating, resin cement selection, and curing mode influenced the bonding performance of self-adhesive resin cements. In addition, resin coating and light curing increased the bond strength of self-adhesive resin cements. Resin coating and light curing are encouraged for predictable bonding performance of dual-cured self-adhesive resin cements in single-visit CAD/CAM resin restorations.
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Affiliation(s)
- Yutaro Oda
- Department of Cariology and Operative Dentistry, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), Tokyo, Japan
| | - Rena Takahashi
- Department of Cariology and Operative Dentistry, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), Tokyo, Japan
| | - Toru Nikaido
- Department of Cariology and Operative Dentistry, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), Tokyo, Japan.,Department of Operative Dentistry, Division of Oral Functional Science and Rehabilitation, School of Dentistry, Asahi University, Gifu, Japan
| | - Junji Tagami
- Department of Cariology and Operative Dentistry, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), Tokyo, Japan
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13
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Mangoush E, Lassila L, Vallittu PK, Garoushi S. Shear-bond strength and optical properties of short fiber-reinforced CAD/CAM composite blocks. Eur J Oral Sci 2021; 129:e12815. [PMID: 34322917 DOI: 10.1111/eos.12815] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2021] [Revised: 06/03/2021] [Accepted: 06/03/2021] [Indexed: 11/30/2022]
Abstract
The aim of this study was to assess the shear-bond strength (SBS) of resin-luting cement to experimental short fiber-reinforced CAD/CAM composite (SFRC) compared to conventional CAD/CAM (Cerasmart 270), 3D printed (GC TEMP PRINT, Pro3dure GR-17), and laboratory (Gradia Plus) composites. Moreover, translucency parameter values and light transmission were evaluated. For each of the five types of composites, discs were prepared (n = 16/group) and divided into subgroups (n = 8/group) according to surface treatment protocol (hydrofluoric acid or air-particle abrasion). SBS test was performed using universal testing machine until failure, and failure modes were visually analyzed. Translucency parameter and curing-light transmission values through 1, 2, and 3 mm thickness were quantified using spectrophotometry and the MARC resin calibrator, respectively. Scanning electron microscopy (SEM) was used to examine the CAD/CAM composites after surface treatment. Composite type and surface treatment had a significant effect on SBS. Laboratory composite showed the highest SBS value (22.4 MPa). Cerasmart 270 exhibited higher translucency parameter values (19.8, 11.0, 5.0) than SFRC (14.5, 5.2, 1.6) at the three composite thicknesses tested. Air-particle abrasion was more effective in enhancing SBS than acid etching. Experimental SFRC CAD/CAM composite showed higher SBS values than Cerasmart 270. For all composites, translucency parameter values and light transmission decreased as thickness increased.
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Affiliation(s)
- Enas Mangoush
- Department of Biomaterials Science and Turku Clinical Biomaterial Center -TCBC, Institute of Dentistry, University of Turku, Turku, Finland
| | - Lippo Lassila
- Department of Biomaterials Science and Turku Clinical Biomaterial Center -TCBC, Institute of Dentistry, University of Turku, Turku, Finland
| | - Pekka K Vallittu
- Department of Biomaterials Science and Turku Clinical Biomaterial Center -TCBC, Institute of Dentistry, University of Turku, Turku, Finland.,City of Turku Welfare Division, Oral Health Care, Turku, Finland
| | - Sufyan Garoushi
- Department of Biomaterials Science and Turku Clinical Biomaterial Center -TCBC, Institute of Dentistry, University of Turku, Turku, Finland
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Ezaki R, Mine A, Sato K, Fukui KI, Kumada K, Yumitate M, Ban S, Yamanaka A, Matsumoto M, Van Meerbeek B, Moriya H, Hashida T, Yatani H. Development of dental inspection method: Nondestructive evaluation of an adhesive interface by ACTIVE acoustic emission. J Prosthodont Res 2021; 66:236-242. [PMID: 34305087 DOI: 10.2186/jpr.jpr_d_20_00260] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
PURPOSE This study aims to confirm the usefulness of active acoustic emission (Active AE) for reproducible and non-invasive generation of physical external force which is required for conventional AE. METHODS Experiment 1: A root dentin-resin adhesive interface was observed. The post space was filled with a dual-cure resin composite core material with and without adhesive. The vibration characteristics of the data obtained from the time-frequency analysis were evaluated. Experiment 2: A crown-abutment tooth adhesive interface was observed. Adhesive resin cement was used for luting the crown and adhesion states in the same specimen over time were analyzed with three measurements: at trial-fitting, immediately after luting, and 2 weeks after luting. Data were subjected to time-frequency analysis and relationships between amplitude (indicating loudness) and frequency (indicating the sound component) were analyzed. RESULTS Experiment 1: Time-frequency analysis confirmed multiple peak frequencies for each specimen without adhesive and monomodal peak frequency in all specimens using adhesive. Experiment 2: Two weeks after luting, all specimens showed a single major peak except one which showed multiple weak peaks.The three-dimensional visualization of time-frequency analysis revealed one specimen with multiple weak peaks while all others displayed a single, low-amplitude band at 2 weeks after luting. CONCLUSIONS The state of the adhesive interface can be evaluated using active AE. This basic technique may prove useful to evaluate changes in the adhesive interface of prostheses over time.
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Affiliation(s)
- Ryoma Ezaki
- Department of Fixed Prosthodontics, Osaka University Graduate School of Dentistry
| | - Atsushi Mine
- Department of Fixed Prosthodontics, Osaka University Graduate School of Dentistry
| | - Kazuhisa Sato
- Fracture and Reliability Research Institute, Graduate School of Engineering, Tohoku University
| | - Ken-Ichi Fukui
- SANKEN (The Institute of Scientific and Industrial Research), Osaka University
| | - Keigo Kumada
- Fracture and Reliability Research Institute, Graduate School of Engineering, Tohoku University
| | - Masahiro Yumitate
- Department of Fixed Prosthodontics, Osaka University Graduate School of Dentistry
| | - Shintaro Ban
- Department of Fixed Prosthodontics, Osaka University Graduate School of Dentistry
| | - Azusa Yamanaka
- Department of Fixed Prosthodontics, Osaka University Graduate School of Dentistry
| | - Mariko Matsumoto
- Department of Restorative Dentistry, Hokkaido University Graduate School of Dental Medicine.,BIOMAT & University Hospitals Leuven, Department of Oral Health Sciences, KU Leuven (University of Leuven)
| | - Bart Van Meerbeek
- BIOMAT & University Hospitals Leuven, Department of Oral Health Sciences, KU Leuven (University of Leuven)
| | - Hirokazu Moriya
- International Education & Exchange Division, Graduate School of Engineering, Tohoku University
| | - Toshiyuki Hashida
- Fracture and Reliability Research Institute, Graduate School of Engineering, Tohoku University
| | - Hirofumi Yatani
- Department of Fixed Prosthodontics, Osaka University Graduate School of Dentistry
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15
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Nagasawa Y, Eda Y, Shigeta H, Ferrari M, Nakajima H, Hibino Y. Effect of sandblasting and/or priming treatment on the shear bond strength of self-adhesive resin cement to CAD/CAM blocks. Odontology 2021; 110:70-80. [PMID: 34272634 DOI: 10.1007/s10266-021-00635-y] [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: 04/13/2021] [Accepted: 06/24/2021] [Indexed: 11/30/2022]
Abstract
The aim of this study was to investigate the effect of two different priming agents and/or sandblasting on the shear bond strength of self-adhesive resin cement to the resin composite for core build-up to CAD/CAM blocks. A CAD/CAM ceramic block (GN I CERAMIC BLOCK, GC) and a CAD/CAM resin composite block (CERASMART 270, GC), a self-adhesive resin cement (G-CEM ONE, GC) and two different primers, i.e., a multipurpose primer (MP; G-Multi Primer, GC) and a ceramic primer (CP; Ceramic Primer II, GC), were examined. Five different surface treatments with priming and/or sandblasting and no surface treatment (control) were performed on the block. Disk specimens (6 mm in diameter and 4 mm in thickness) made from core composites were cemented to the blocks after the surface treatments. Then, the 24-h shear bond strength of the resin cement between the block and the resin composite core was determined (n = 15). Sandblasted specimens had greater bond strength than controls for both blocks (p < 0.05). Priming to both blocks significantly increased the bond strength of resin cement compared to that of controls (p < 0.05). Although Weibull moduli were not significantly changed among all surface treatments for both blocks, the strengths with 5% and 95% failure probability of sandblasted and/or primed blocks were estimated to be greater than those of controls. The combination of priming and sandblasting to the CAD/CAM composite and ceramic surface was effective in increasing the bond strength of the resin cement.
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Affiliation(s)
- Yuko Nagasawa
- Division of Dental Biomaterials Science, Department of Restorative and Biomaterials Sciences, Meikai University School of Dentistry, 1-1, Keyakidai, Sakado, Saitama, 350-0283, Japan.
| | - Yoshikazu Eda
- Division of Dental Biomaterials Science, Department of Restorative and Biomaterials Sciences, Meikai University School of Dentistry, 1-1, Keyakidai, Sakado, Saitama, 350-0283, Japan
| | - Hirotaka Shigeta
- Division of Dental Biomaterials Science, Department of Restorative and Biomaterials Sciences, Meikai University School of Dentistry, 1-1, Keyakidai, Sakado, Saitama, 350-0283, Japan
| | - Marco Ferrari
- Department of Prosthodontics and Dental Materials, School of Dental Medicine, University of Siena, Viale Mario Bracci, 16, Siena, Italy
| | - Hiroshi Nakajima
- Division of Dental Biomaterials Science, Department of Restorative and Biomaterials Sciences, Meikai University School of Dentistry, 1-1, Keyakidai, Sakado, Saitama, 350-0283, Japan
| | - Yasushi Hibino
- Division of Dental Biomaterials Science, Department of Restorative and Biomaterials Sciences, Meikai University School of Dentistry, 1-1, Keyakidai, Sakado, Saitama, 350-0283, Japan
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16
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Harb O, Al-Zordk W, Özcan M, Sakrana AA. Influence of Hydrofluoric and Nitric Acid Pre-Treatment and Type of Adhesive Cement on Retention of Zirconia Crowns. MATERIALS 2021; 14:ma14040960. [PMID: 33670574 PMCID: PMC7923146 DOI: 10.3390/ma14040960] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/15/2021] [Revised: 02/09/2021] [Accepted: 02/15/2021] [Indexed: 11/16/2022]
Abstract
Background: The aim of this study was to test the impact of hot acids etching and two types of adhesive cement on the retention of zirconia crowns. Methods: Forty maxillary premolars were prepared, and zirconia crowns were designed and fabricated with proximal extensions, then divided into 4 groups (n = 10). Group AP; the crowns were air-abraded and cemented using Panavia SA Cement. Group AL; the crowns were air- abraded and cemented using GC LinkForce. Group AHP; the crowns were air-abraded, etched with the hot acids (48% hydrofluoric acid and 69% nitric acid), and cemented using Panavia SA Cement. Group AHL; the crowns were air-abraded, etched with the hot acids, and cemented using GC LinkForce. Each zirconia crown was pre-treated and bonded to its corresponding tooth. After thermocycling (5–55 °C/10,000), the retention test was performed and the load required to dislodge the crown was reported in Newton (N), and mode of failure was recorded. The retention strength (MPa) was calculated for each tested variable and statistically analyzed. Results: Group AHP showed the highest mean value of the retention strength, followed by group AP then group AHL. Group AL showed the lowest value. A statistically significant effect (p = 0.001) of the hot acids etching on the retention of zirconia crown was found. Also, there was a significant effect (p = 0.000) of the cement type. The interaction between surface treatment and the cement type has no significant impact (p = 0.882). The main mode of failure for Panavia SA Cement is mixed mode of failure, while for G-CEM LinkForce is adhesive failure. Conclusions: Hot acid etching pre-treatment improved the retention of zirconia crown. Usage of Panavia SA Cement with hot acids etching is effective can be used for adhesive cementation of zirconia crown.
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Affiliation(s)
- Osama Harb
- Fixed Prosthodontics Department, Faculty of Dentistry, Mansoura and Horus University, Mansoura 35511, Egypt; (O.H.); (W.A.-Z.)
| | - Walid Al-Zordk
- Fixed Prosthodontics Department, Faculty of Dentistry, Mansoura and Horus University, Mansoura 35511, Egypt; (O.H.); (W.A.-Z.)
| | - Mutlu Özcan
- Center for Dental and Oral Medicine, Division of Dental Biomaterials, Clinic for Reconstructive Dentistry, University of Zurich, 8032 Zurich, Switzerland;
| | - Amal Abdelsamad Sakrana
- Fixed Prosthodontics Department, Faculty of Dentistry, Mansoura and Horus University, Mansoura 35511, Egypt; (O.H.); (W.A.-Z.)
- Correspondence: ; Tel.: +2-010-238-49099
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17
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Niizuma Y, Kobayashi M, Toyama T, Manabe A. Effect of etching with low concentration hydrofluoric acid on the bond strength of CAD/CAM resin block. Dent Mater J 2020; 39:1000-1008. [PMID: 32684610 DOI: 10.4012/dmj.2018-398] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
The effect of etching for 90 s with low concentrations (0.5, 1.0, 2.0, 3.0, 3.5, and 4.0%) of hydrofluoric acid (HF) on the adhesiveness of computer-aided design/computer-aided manufacturing (CAD/CAM) resin blocks [CERASMART (CS), SHOFU BLOCK HC (HC), KATANA AVENCIA Block(KA), and VITA ENAMIC (EN)] was investigated. Energy dispersive spectroscopy revealed that the silicon content of HC, KA, and EN groups remained almost constant with HF etching of ≤4%. HF etching increased the surface roughness of all blocks. The HF concentration resulting in the highest shear bond strength in each group was as follows: CS (2.0%), HC (3.0%), KA (3.5%) and EN (0.5%). Scanning electron microscopy revealed that the bonding interface of etched surfaces differed significantly from that of airborne-particle abrasion surfaces. Thus, low concentration HF etching is effective for surface treatment of CAD/CAM resin blocks. The etching effect and optimum HF concentration differ with the block composition and structure.
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Affiliation(s)
- Yuiko Niizuma
- Department of Conservative Dentistry, Division of Aesthetic Dentistry and Clinical Cariology, Showa University School of Dentistry
| | - Mikihiro Kobayashi
- Department of Conservative Dentistry, Division of Aesthetic Dentistry and Clinical Cariology, Showa University School of Dentistry
| | - Toshinari Toyama
- Department of Conservative Dentistry, Division of Aesthetic Dentistry and Clinical Cariology, Showa University School of Dentistry
| | - Atsufumi Manabe
- Department of Conservative Dentistry, Division of Aesthetic Dentistry and Clinical Cariology, Showa University School of Dentistry
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18
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TAJIRI-YAMADA Y, MINE A, NAKATANI H, KAWAGUCHI-UEMURA A, MATSUMOTO M, HAGINO R, YUMITATE M, BAN S, YAMANAKA A, MIURA J, MEERBEEK BVAN, YATANI H. MDP is effective for removing residual polycarboxylate temporary cement as an adhesion inhibitor. Dent Mater J 2020; 39:1087-1095. [DOI: 10.4012/dmj.2020-132] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Affiliation(s)
- Yuko TAJIRI-YAMADA
- Department of Fixed Prosthodontics, Osaka University Graduate School of Dentistry
| | - Atsushi MINE
- Department of Fixed Prosthodontics, Osaka University Graduate School of Dentistry
| | - Hayaki NAKATANI
- Department of Fixed Prosthodontics, Osaka University Graduate School of Dentistry
| | | | - Mariko MATSUMOTO
- Department of Restorative Dentistry, Hokkaido University Graduate School of Dental Medicine
- BIOMAT & University Hospitals Leuven, Department of Oral Health Sciences, KU Leuven (University of Leuven)
| | - Ryosuke HAGINO
- Department of Fixed Prosthodontics, Osaka University Graduate School of Dentistry
| | - Masahiro YUMITATE
- Department of Fixed Prosthodontics, Osaka University Graduate School of Dentistry
| | - Shintaro BAN
- Department of Fixed Prosthodontics, Osaka University Graduate School of Dentistry
| | - Azusa YAMANAKA
- Department of Fixed Prosthodontics, Osaka University Graduate School of Dentistry
| | - Jiro MIURA
- Division for Interdisciplinary Dentistry, Osaka University Dental Hospital
| | - Bart VAN MEERBEEK
- BIOMAT & University Hospitals Leuven, Department of Oral Health Sciences, KU Leuven (University of Leuven)
| | - Hirofumi YATANI
- Department of Fixed Prosthodontics, Osaka University Graduate School of Dentistry
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19
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MATSUMURA M, NOZAKI K, YANAKA W, NEMOTO R, TAKITA M, YAMASHITA K, MATSUMURA M, MIURA H. Optimization of milling condition of composite resin blocks for CAD/CAM to improve surface roughness and flexural strength. Dent Mater J 2020; 39:1057-1063. [DOI: 10.4012/dmj.2019-385] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Affiliation(s)
- Mayuko MATSUMURA
- Department of Fixed Prosthodontics, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University
| | - Kosuke NOZAKI
- Department of Fixed Prosthodontics, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University
| | - Wataru YANAKA
- Department of Fixed Prosthodontics, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University
| | - Reina NEMOTO
- Department of Fixed Prosthodontics, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University
| | - Mina TAKITA
- Department of Fixed Prosthodontics, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University
| | - Kimihiro YAMASHITA
- Department of Fixed Prosthodontics, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University
| | - Mitsuaki MATSUMURA
- Department of Fixed Prosthodontics, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University
| | - Hiroyuki MIURA
- Department of Fixed Prosthodontics, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University
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20
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Current status and perspective of CAD/CAM-produced resin composite crowns: a review of clinical effectiveness. JAPANESE DENTAL SCIENCE REVIEW 2020; 56:184-189. [PMID: 33299502 PMCID: PMC7704397 DOI: 10.1016/j.jdsr.2020.10.002] [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: 05/29/2020] [Revised: 09/25/2020] [Accepted: 10/09/2020] [Indexed: 11/20/2022] Open
Abstract
The purpose of the present review was to survey the available literature on computer-aided design/computer-aided manufacturing (CAD/CAM)-produced resin composite materials to provide clinicians with a current overview of the key components necessary for daily clinical use. An electronic search was conducted in the PubMed database. Peer-reviewed articles in English language on the use of resin composites in CAD/CAM dental crowns were included. A total of 122 full-text articles were identified, 15 of which were selected during the initial review. Two additional articles were also discovered through a manual search, to obtain a final total of 17 articles included in the present review. Of these, 16 were to in vitro studies, and one was an in vivo study. Findings from the in vitro studies indicate that resin composite block materials for CAD/CAM applications demonstrate excellent physical properties and are appropriate for the clinical restoration of premolars and molars. However, the in vivo study reported a low 3-year success rate, but high survival rate for resin composite CAD/CAM crowns placed in the premolar region. The key to ensuring the successful prognosis of a resin composite CAD/CAM crown is to ensure that all steps—such as proper case selection, abutment tooth preparation, occlusal adjustment, and bonding—are accurately performed.
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21
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Yano HT, Ikeda H, Nagamatsu Y, Masaki C, Hosokawa R, Shimizu H. Effects of alumina airborne-particle abrasion on the surface properties of CAD/CAM composites and bond strength to resin cement. Dent Mater J 2020; 40:431-438. [PMID: 33208574 DOI: 10.4012/dmj.2020-023] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
The purpose of this study is to clarify physical and chemical changes in surfaces of CAD/CAM composites caused by alumina airborne-particle abrasion and its effect on adhesive bonding. Our study involved three dispersed filler (DF)-based and a polymer-infiltrated ceramic network (PICN)-based CAD/CAM composites. Changes in the surface morphologies of the composites were examined, and surface free energy (SFE) analysis was performed based on Owens-Wendt theory. The influence of the abrasion on the bond strengths of CAD/CAM composites to the resin cement was characterized by shear bond strength (SBS) test. The abrasion increased the roughness of the composites. The SFE analysis showed that the abrasion significantly increased the dispersive component but decreased the polar component of the SFE associated with the DF-based composites, while no change occurred for those of the PICN-based composite. The abrasion slightly improved the SBSs for the DF-based composites but not that of the PICN-based composite.
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Affiliation(s)
- Haruka Takesue Yano
- Division of Oral Reconstruction and Rehabilitation, Department of Oral Functions, Kyushu Dental University.,Division of Biomaterials, Department of Oral Functions, Kyushu Dental University
| | - Hiroshi Ikeda
- Division of Biomaterials, Department of Oral Functions, Kyushu Dental University
| | - Yuki Nagamatsu
- Division of Biomaterials, Department of Oral Functions, Kyushu Dental University
| | - Chihiro Masaki
- Division of Oral Reconstruction and Rehabilitation, Department of Oral Functions, Kyushu Dental University
| | - Ryuji Hosokawa
- Division of Oral Reconstruction and Rehabilitation, Department of Oral Functions, Kyushu Dental University
| | - Hiroshi Shimizu
- Division of Biomaterials, Department of Oral Functions, Kyushu Dental University
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22
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Abdou A, Takagaki T, Alghamdi A, Tichy A, Nikaido T, Tagami J. Bonding performance of dispersed filler resin composite CAD/CAM blocks with different surface treatment protocols. Dent Mater J 2020; 40:209-219. [PMID: 33162457 DOI: 10.4012/dmj.2020-049] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
The effect of various pretreatments on the bonding of a resin cement to resin-composite CAD/CAM blocks (RCBs) was examined. The surface of dispersed-filler RCBs (DF-RCBs) and a polymer infiltrated ceramic network RCB (PICN-RCB) was roughened using hydrofluoric acid etching (HF) or sandblasting, and followed by silanization and/or universal adhesive (UA) application. Microtensile bond strength (µTBS), surface roughness parameters (arithmetical mean height (Sa); developed interfacial area ratio (Sdr)), and critical surface energy (γc) were determined. For most DF-RCBs, the highest µTBS was obtained using HF+UA. UA application to DF-RCBs resulted in similar or higher µTBS compared to silanization, which indicates that silane treatment is not crucial for DF-RCBs, especially after HF. In contrast, the highest µTBS to PICN-RCB was obtained with silanization. Both roughening pretreatments significantly increased the surface roughness parameters and the γc of all RCBs. The γc was positively correlated with Sa (r=0.756, p<0.001) and Sdr (r=0.837, p<0.001).
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Affiliation(s)
- Ahmed Abdou
- Department of Cariology and Operative Dentistry, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University.,Biomaterials Department, Faculty of Oral and Dental Medicine, Modern University for Technology and Information
| | - Tomohiro Takagaki
- Department of Operative Dentistry, Division of Oral Functional Science and Rehabilitation, School of Dentistry, Asahi University
| | - Ali Alghamdi
- Al-Mikwah Dental Center, Saudi Ministry of Health
| | - Antonin Tichy
- Department of Cariology and Operative Dentistry, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University.,Institute of Dental Medicine, First Faculty of Medicine of the Charles University and General University Hospital in Prague
| | - Toru Nikaido
- Department of Operative Dentistry, Division of Oral Functional Science and Rehabilitation, School of Dentistry, Asahi University
| | - Junji Tagami
- Department of Cariology and Operative Dentistry, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University
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Nagasawa Y, Hibino Y, Eda Y, Nakajima H. Effect of surface treatment of CAD/CAM resin composites on the shear bond strength of self-adhesive resin cement. Dent Mater J 2020; 40:364-378. [PMID: 33100298 DOI: 10.4012/dmj.2019-431] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
This study examined the effects of sandblasting, hydrofluoric acid etching and priming on the shear bond strength of self-adhesive resin cement between seven different CAD/CAM resin composites and a resin composite core material at 24-h after cement mixing. Five surface treatments [control (C), sandblasting (S), priming (P), sandblasting with priming (SP), and 9% HF etching with priming (HFP)] were performed respectively for disc specimens of CAD/CAM blocks. There were no significant differences in bond strength among the C, S, and P, except for one block (p>0.05). SP showed a greater bond strength than S. Weibull moduli were not changed significantly among all treatments for all blocks, whereas the strengths with 5% and 95% failure probability of SP and HFP showed greater values than the others. The bond strengths of HFP were comparable to those of SP. Priming after sandblasting or HF etching could be effective to increase the bond strength of CAD/CAM blocks.
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Affiliation(s)
- Yuko Nagasawa
- Division of Dental Biomaterials Science, Department of Restorative and Biomaterials Sciences, Meikai University School of Dentistry
| | - Yasushi Hibino
- Division of Dental Biomaterials Science, Department of Restorative and Biomaterials Sciences, Meikai University School of Dentistry
| | - Yoshikazu Eda
- Division of Dental Biomaterials Science, Department of Restorative and Biomaterials Sciences, Meikai University School of Dentistry
| | - Hiroshi Nakajima
- Division of Dental Biomaterials Science, Department of Restorative and Biomaterials Sciences, Meikai University School of Dentistry
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Takahashi N, Yabuki C, Kurokawa H, Takamizawa T, Kasahara Y, Saegusa M, Suzuki M, Miyazaki M. Influence of surface treatment on bonding of resin luting cement to CAD/CAM composite blocks. Dent Mater J 2020; 39:834-843. [PMID: 32435009 DOI: 10.4012/dmj.2019-247] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
The aim of this study was to determine the influence of different surface treatments of CAD/CAM composite blocks on bonding effectiveness of resin cements, based on the shear bond strength test and the surface science examination. Specimens were fabricated from two types of CAD/CAM composite blocks (Cerasmart and VITA Enamic), and the specimen surfaces were alumina sandblasted. Specimen surfaces were treated with i) silane, ii) primer, and iii) silane+primer, then two types of cements (Block HC Cem and Super Bond) were bonded. After 24 h storage, bond strengths were measured. Surface free energy measurements were performed of the treated CAD/CAM composite blocks surfaces. The groups ii) and iii) showed significantly higher bond strengths than the group i), apart from VITA Enamic with Block HC Cem. Although the total surface free energy showed different trends in different surface treatments, a similar trend was found in both CAD/CAM composite blocks.
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Affiliation(s)
- Nao Takahashi
- Department of Operative Dentistry, Nihon University School of Dentistry
| | - Chiaki Yabuki
- Department of Operative Dentistry, Nihon University School of Dentistry
| | - Hiroyasu Kurokawa
- Department of Operative Dentistry, Nihon University School of Dentistry
| | | | - Yuta Kasahara
- Department of Operative Dentistry, Nihon University School of Dentistry
| | - Makoto Saegusa
- Department of Operative Dentistry, Nihon University School of Dentistry
| | - Miho Suzuki
- Department of Operative Dentistry, Nihon University School of Dentistry
| | - Masashi Miyazaki
- Department of Operative Dentistry, Nihon University School of Dentistry
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Kim JE, Lim JH, Kang YJ, Kim JH, Shim JS. Effect of Pressure and Particle Size During Aluminum Oxide Air Abrasion on the Flexural Strength of Disperse-Filled Composite and Polymer-Infiltrated Ceramic Network Materials. Polymers (Basel) 2020; 12:polym12061396. [PMID: 32580368 PMCID: PMC7362000 DOI: 10.3390/polym12061396] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2020] [Revised: 06/12/2020] [Accepted: 06/19/2020] [Indexed: 11/16/2022] Open
Abstract
Esthetic dental computer-aided design/computer-aided manufacturing (CAD/CAM) polymers such as disperse-filled composites (DFC) and polymer-infiltrated ceramic networks (PICN) should be subjected to surface treatment before bonding. However, such treatment can lead to defect formation and a decrease in strength. Therefore, in this study, we compared the flexural strengths of DFC and PICN materials air-abraded with alumina particles of different sizes at different pressures. In addition to Weibull analysis, the samples (untreated and treated) were characterized by scanning electron microscopy and atomic force microscopy. Both DFC and PICN exhibited the lowest flexural strength at large particle sizes and high pressures. Therefore, we optimized the air abrasion parameters to maintain the flexural strength and significantly increase surface roughness. In the case of DFC, the optimal particle size and pressure conditions were 50 µm at 2 bar and 110 µm at 1 bar, while for PICN, the best performance was obtained using Al2O3 particles with a size of 50 µm at 1 bar. This study reveals that optimization of the surface treatment process is crucial in the fabrication of high-performance clinical materials for dental restorations.
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Hagino R, Mine A, Kawaguchi-Uemura A, Tajiri-Yamada Y, Yumitate M, Ban S, Miura J, Matsumoto M, Yatani H, Nakatani H. Adhesion procedures for CAD/CAM indirect resin composite block: A new resin primer versus a conventional silanizing agent. J Prosthodont Res 2020; 64:319-325. [PMID: 32423658 DOI: 10.1016/j.jpor.2019.09.004] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2019] [Revised: 09/09/2019] [Accepted: 09/12/2019] [Indexed: 11/24/2022]
Abstract
PURPOSE The purpose of this study was to evaluate the effectiveness of both a resin primer containing methyl methacrylate (MMA) and a silanizing agent on bonding to indirect resin composite blocks, using two types of build-up hybrid resin composites. METHODS SHOFU BLOCK HC (Shofu) specimens were blasted with alumina, after which one of two surface treatments was applied: CERA RESIN BOND (Shofu, the Silane group) or HC primer (Shofu, the MMA group). Resin composites made using either Solidex Hardura (SDH, Shofu) or Ceramage Duo (CMD, Shofu) were built up and micro-tensile bond strength (μTBS) values were measured after storage in water for either 24h or 6 months (n=24 per group). The fracture surfaces after μTBS measurements and the resin block/build-up resin interfaces were observed by scanning electron microscopy (SEM). RESULTS The bond strength of the Silane/SDH group significantly decreased after 6 months (p<0.001), whereas in the MMA group there was no significant loss after 24h or 6 months (p=0.99). In the CMD group, the bond strength after 6 months was significantly lowered in both the Silane group (p<0.001) and the MMA group (p<0.001), but the latter still showed greater adhesion. SEM images demonstrated that the matrix resin was partially destroyed at the fracture surfaces of the MMA group and fracture surface unevenness was observed. CONCLUSIONS A primer containing MMA produced stronger bonding to CAD/CAM resin even after long-term aging compared to a silane treatment.
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Affiliation(s)
- Ryosuke Hagino
- Department of Fixed Prosthodontics, Osaka University Graduate School of Dentistry, Japan.
| | - Atsushi Mine
- Department of Fixed Prosthodontics, Osaka University Graduate School of Dentistry, Japan.
| | - Asuka Kawaguchi-Uemura
- Department of Fixed Prosthodontics, Osaka University Graduate School of Dentistry, Japan
| | - Yuko Tajiri-Yamada
- Department of Fixed Prosthodontics, Osaka University Graduate School of Dentistry, Japan
| | - Masahiro Yumitate
- Department of Fixed Prosthodontics, Osaka University Graduate School of Dentistry, Japan
| | - Shintaro Ban
- Department of Fixed Prosthodontics, Osaka University Graduate School of Dentistry, Japan
| | - Jiro Miura
- Division for Interdisciplinary Dentistry, Osaka University Dental Hospital, Japan
| | - Mariko Matsumoto
- Department of Restorative Dentistry, Hokkaido University Graduate School of Dental Medicine, Japan
| | - Hirofumi Yatani
- Department of Fixed Prosthodontics, Osaka University Graduate School of Dentistry, Japan
| | - Hayaki Nakatani
- Department of Fixed Prosthodontics, Osaka University Graduate School of Dentistry, Japan
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Hibino Y, Nagasawa Y, Eda Y, Shigeta H, Nakajima H. Effect of storage conditions on mechanical properties of resin composite blanks for CAD/CAM crowns. Dent Mater J 2020; 39:742-751. [PMID: 32418950 DOI: 10.4012/dmj.2019-202] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
The objective of this study was to examine the effects of storage conditions on the flexural strengths of resin composite materials for CAD/CAM restorations. Seven commercially available resin composite CAD/CAM blanks were examined. Rectangular specimens (4.0×1.2×4.0 mm) of each material were trimmed from the blanks and subjected to thermal cycling between 5°C and 55°C in deionized water at 10,000 cycles or stored in 37°C deionized water for one week or air for one day (n=10 for each condition). The difference in storage condition between water immersion and thermal cycling did not affect the flexural strengths of resin composite materials for CAD/CAM examined in this study. The resin composite block CS300 made from Bis-MEPP and UDMA showed the greatest flexural strength under all storage conditions and less deterioration of strength by thermal cycling and water immersion among the resin composite blocks tested.
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Affiliation(s)
- Yasushi Hibino
- Division of Dental Biomaterials Science, Department of Restorative and Biomaterials Sciences, Meikai University School of Dentistry
| | - Yuko Nagasawa
- Division of Dental Biomaterials Science, Department of Restorative and Biomaterials Sciences, Meikai University School of Dentistry
| | - Yoshikazu Eda
- Division of Dental Biomaterials Science, Department of Restorative and Biomaterials Sciences, Meikai University School of Dentistry
| | - Hirotaka Shigeta
- Division of Dental Biomaterials Science, Department of Restorative and Biomaterials Sciences, Meikai University School of Dentistry
| | - Hiroshi Nakajima
- Division of Dental Biomaterials Science, Department of Restorative and Biomaterials Sciences, Meikai University School of Dentistry
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Ustun S, Ayaz EA. Effect of different cement systems and aging on the bond strength of chairside CAD-CAM ceramics. J Prosthet Dent 2020; 125:334-339. [PMID: 32122650 DOI: 10.1016/j.prosdent.2019.11.025] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2019] [Revised: 11/18/2019] [Accepted: 11/18/2019] [Indexed: 11/19/2022]
Abstract
STATEMENT OF PROBLEM The bond strength of different chairside computer-aided design and computer-aided manufacturing (CAD-CAM) restorative materials to dentin with different resin cements needs to be evaluated. PURPOSE The purpose of this in vitro study was to investigate the effect of 3 different cementation systems after thermal aging on the shear bond strength of different CAD-CAM materials. MATERIAL AND METHODS The occlusal surfaces of 63 molar teeth of similar size were removed, and 21 zirconia-reinforced lithium disilicate (Vita Suprinity-VS), 21 polymer infiltrated ceramic (Vita Enamic-VE), and 21 resin nanoceramic (GC Cerasmart-GC) rectangular specimens of 2.5 mm in thickness were obtained. The ceramics were cemented using total etch (TE), self-etch (SE), and self-adhesive (SA) cement systems. Half of the specimens were subjected to thermal aging with 5000 cycles. The shear bond strength test of all the specimens was measured. Fractured ceramic surfaces were examined by scanning electron microscopy/energy dispersive X-ray spectroscopy (SEM/EDX) analysis. The Shapiro-Wilk test, 3-way analysis of variance (ANOVA), and Fisher Least Significant Difference (LSD) tests were used to analyze the shear bond strength test data (α=.05). RESULTS The highest bond strength value was found in the nonthermal aged VS-TE and the lowest in the thermal aged VE-TE. Significant interaction was found between TE and SE cemented ceramics (P<.001). For specimens cemented with the SA system, significant interaction was found among ceramics with thermal aged specimens (P<.001). Thermal aging significantly decreased the mean bond strength (P<.05). CONCLUSIONS Differences in bond strength were observed in chairside CAD-CAM ceramics when cemented with TE, SE, and SA systems. Additionally, thermal aging significantly reduced the bond strength values of all the ceramic materials, regardless of the cementation procedure. Clinicians should consider these variables and choose the most suitable cementation systems for the material used.
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Affiliation(s)
- Seda Ustun
- Assistant Professor, Department of Prosthodontics, Faculty of Dentistry, Karadeniz Technical University, Trabzon, Turkey
| | - Elif Aydogan Ayaz
- Associate Professor, Department of Prosthodontics, Faculty of Dentistry, Karadeniz Technical University, Trabzon, Turkey.
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Yano HT, Ikeda H, Nagamatsu Y, Masaki C, Hosokawa R, Shimizu H. Correlation between microstructure of CAD/CAM composites and the silanization effect on adhesive bonding. J Mech Behav Biomed Mater 2020; 101:103441. [DOI: 10.1016/j.jmbbm.2019.103441] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2019] [Revised: 09/17/2019] [Accepted: 09/18/2019] [Indexed: 10/26/2022]
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Yu H, Özcan M, Yoshida K, Cheng H, Sawase T. Bonding to industrial indirect composite blocks: A systematic review and meta-analysis. Dent Mater 2019; 36:119-134. [PMID: 31784060 DOI: 10.1016/j.dental.2019.11.002] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2019] [Revised: 10/07/2019] [Accepted: 11/11/2019] [Indexed: 11/28/2022]
Abstract
OBJECTIVE The aim of this systematic review and meta-analysis was to evaluate the effect of surface conditioning methods on the bond strength of industrial indirect composite blocks (ICs). METHODS Based on the PICOS strategy, the Medline via PubMed, Embase and Web of Science (ISI - Web of Knowledge) electronic databases were searched for peer-reviewed articles in both English and Chinese, with no publication year limit. In vitro studies evaluating the effects of surface conditioning on the bond strength of ICs were selected. The meta-analysis was conducted to calculate the mean difference between surface-conditioned ICs and unconditioned controls. Subgroup analysis was performed to evaluate the different surface conditioning methods, separately for polymer-infiltrated ceramic network (PICN) material and the ICs with dispersed fillers (ICDFs). Meta-analyses were performed with a random-effects model at a significance level of 0.05. RESULTS AND SIGNIFICANCE From 802 relevant studies, 25 were selected for full-text analysis. Nineteen studies were eligible for inclusion in this systematic review, whereas 9 studies were included in the meta-analysis. A manual search of the principal periodicals specific to the area resulted in no additional articles. The meta-analysis indicated a significant difference in bond strength between the surface-conditioned ICs and controls under both non-aged and aged conditions. The combination of mechanical and chemical conditioning yielded the highest bond strength of ICs. This meta-analysis suggests that chemical etching followed by a universal primer and alumina air abrasion followed by a silane coupling agent could be considered the best strategy for optimizing the bond strength of PICN materials and ICDFs under aged conditions, respectively.
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Affiliation(s)
- Hao Yu
- Department of Prosthodontics, School and Hospital of Stomatology, Fujian Medical University, Yangqiao Zhong Road 246, Fuzhou 350002, China; Department of Applied Prosthodontics, Graduate School of Biomedical Sciences, Nagasaki University, 1 Chome-7-1 Sakamoto, Nagasaki, Japan.
| | - Mutlu Özcan
- University of Zurich, Center for Dental and Oral Medicine, Dental Materials Unit, Clinic for Fixed and Removable Prosthodontics and Dental Materials Science, Plattenstrasse 11, CH-8032, Zurich, Switzerland.
| | - Keiichi Yoshida
- Clinic of Fixed Prosthodontics, Nagasaki University Hospital, 1 Chome-7-1 Sakamoto, Nagasaki, Japan
| | - Hui Cheng
- Department of Prosthodontics, School and Hospital of Stomatology, Fujian Medical University, Yangqiao Zhong Road 246, Fuzhou 350002, China
| | - Takashi Sawase
- Department of Applied Prosthodontics, Graduate School of Biomedical Sciences, Nagasaki University, 1 Chome-7-1 Sakamoto, Nagasaki, Japan
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Ouchi H, Takamizawa T, Tsubota K, Tsujimoto A, Imai A, Barkmeier WW, Latta MA, Miyazaki M. The Effects of Aluminablasting on Bond Durability Between Universal Adhesives and Tooth Substrate. Oper Dent 2019; 45:196-208. [PMID: 31738692 DOI: 10.2341/18-170-l] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
The aim of this study was to determine the effect of aluminablasting on the bond durability of universal adhesives and adherent surface characteristics. Adhese Universal (Ivoclar Vivadent), All-Bond Universal (Bisco), Bondmer Lightless (Tokuyama Dental), G-Premio Bond (GC), and Scotchbond Universal (3M ESPE) were used in self-etch mode. The prepared bovine enamel and dentin specimens were divided into two groups based on whether they received an aluminablasting prior to application of the universal adhesives. The resin composite bonded specimens were stored in distilled water at 37°C for 24 hours, following which the shear bond strength (SBS) of half of the specimens was measured (24-hour group). The other half was subjected to 30,000 thermal cycles between 5 and 55°C before SBS measurement (TC group). Surface roughness (Ra) and surface free energy (SFE) of the adherent surfaces were also measured, and scanning electron microscopy observation and scanning electron microscopy/energy-dispersive X-ray analysis were carried out. Most of the adhesives did not show any significant differences in enamel SBS values between the two pretreatment groups, regardless of the storage condition. However, the dentin SBS values were significantly lower in specimens that underwent aluminablasting compared with those that did not, irrespective of their storage conditions. Significantly higher Ra and SFE values were observed in the enamel and dentin of specimens that underwent aluminablasting. Although aluminablasting increased the Ra and SFE values of enamel and dentin, its effect on the SBS value was dependent on the tooth substrate. In addition to C, O, Na, Mg, P, and Ca, the element Al was detected in the enamel and dentin of samples that had undergone aluminablasting. These results suggest that although aluminablasting of the tooth surface is thought to be effective for modification of the adherent surface, it may not enhance enamel bond performance and may also adversely affect the dentin bond effectiveness of the universal adhesives.
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Asano R, Otake S, Nozaki K, Yoshida K, Miura H. Effect of elapsed time after air abrasion on bond strength of luting agent to CAD/CAM resin blocks. J Oral Sci 2019; 61:459-467. [PMID: 31378752 DOI: 10.2334/josnusd.18-0305] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
Abstract
This experiment assessed the effect of elapsed time between air abrasion and bonding on tensile bond strength (TBS) between computer-aided design/computer-aided manufacturing (CAD/CAM) composite resin blocks and luting agents. Specimens were divided into eight groups classified by block type (Estelite Block or HC Block), elapsed time after air abrasion (none [D0] or 1 week [D7]), luting agent type (Estecem [ESC] or Rely X Ultimate [RLU]), and polymerization condition (chemical cured [CC] or light cured [LC]). In the CC+ESC group, TBS was significantly higher at D0 than at D7. There was also a significant difference between blocks in all groups except the LC+ESC group. Scanning electron microscopy and atomic force microscopy were used to observe the surfaces of blocks after air abrasion and indicated that blocks absorbed water in air with elapsed time, which affected TBS between CAD/CAM composite resin blocks and luting agents.
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Affiliation(s)
- Rana Asano
- Department of Fixed Prosthodontics, Division of Oral Health Sciences, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University
| | - Shiho Otake
- Department of Fixed Prosthodontics, Division of Oral Health Sciences, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University
| | - Kosuke Nozaki
- Department of Material Biofunctions, Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University
| | - Keiichi Yoshida
- Department of Fixed Prosthodontics, Division of Oral Health Sciences, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University
| | - Hiroyuki Miura
- Department of Fixed Prosthodontics, Division of Oral Health Sciences, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University
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Ali A, Takagaki T, Naruse Y, Abdou A, Nikaido T, Ikeda M, Tagami J. The effect of elapsed time following alumina blasting on adhesion of CAD/CAM resin block to dentin. Dent Mater J 2019; 38:354-360. [PMID: 30713288 DOI: 10.4012/dmj.2018-113] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
The aim of this study was to evaluate the time elapsed bond strength of the CAD/CAM resin block (CRB) to bovine dentin after alumina blasting. CRB (KATANA AVENCIA BLOCK) slices were ground with #600-SiC paper and divided into three groups according to alumina blasting pressure -0.1 MPa, 0.2 MPa or untreated- and then divided into two subgroups according to the time elapsed after alumina blasting -same-day or one-week "dry-storage" at controlled laboratory conditions before cementation. The CRB slices were then cemented to bovine dentin with Panavia V5 (Kuraray Noritake Dental), and divided into two subgroups -light curing or chemical curing. After 24 h storage in distilled water at 37°C, the specimens were then subjected to micro-tensile bond strength (µTBS) testing. One-week group showed a significant decrease in µTBS. The µTBS values showed that CRBs must be cemented with light curing immediately after alumina blasting at 0.1 or 0.2 MPa to obtain a stable adhesion.
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Affiliation(s)
- Alghamdi Ali
- Department of Cariology and Operative Dentistry, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University
| | - Tomohiro Takagaki
- Department of Cariology and Operative Dentistry, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University
| | - Yuki Naruse
- Department of Cariology and Operative Dentistry, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University
| | - Ahmed Abdou
- Department of Cariology and Operative Dentistry, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University
| | - Toru Nikaido
- Department of Cariology and Operative Dentistry, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University.,Department of Operative Dentistry, Division of Oral Functional Science and Rehabilitation, School of Dentistry, Asahi University
| | - Masaomi Ikeda
- Oral Prosthetic Engineering, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University
| | - Junji Tagami
- Department of Cariology and Operative Dentistry, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University
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Yu H, Yoshida K, Cheng H, Sawase T. Bonding of different self-adhesive resins to high-strength composite resin block treated with surface conditioning. J Prosthodont Res 2019; 63:340-346. [PMID: 30792147 DOI: 10.1016/j.jpor.2019.01.008] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2018] [Revised: 01/14/2019] [Accepted: 01/21/2019] [Indexed: 11/16/2022]
Abstract
PURPOSE This study aimed to evaluate the effects of chemical conditioning and self-adhesive resins (SARs) on the bonding of mechanically conditioned high-strength composite resin block (HSCRB). METHODS Eighteen sections of HSCRB (KZR-CAD HR 3 Gammatheta, Yamakin) were treated with alumina air abrasion and randomly divided into 3 groups according to the SARs for bonding: RelyX Unicem 2 (RXU), SA Luting Plus (SAL), and G-Cem ONE (GCO). The sections were further divided into 3 subgroups according to the chemical conditioning of the adherend surfaces: no conditioning (C), universal adhesive (UA), and a mixture of γ-MPTS and 10-MDP (MM). After the surface conditioning, the sections were cemented with the SARs. Each cemented section was cut into 40 beams. Half of the beams were thermocycled (4°C/60°C, 10,000 cycles). The micro-tensile bond strength (μTBS) values were measured using a universal testing machine. Scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDS), contact angles, and surface roughness measurements were performed on the adherend surfaces of each subgroup. RESULTS RXU showed the highest μTBS values among the 3 SARs tested, while MM application exhibited the highest μTBS values among the 3 chemical conditioning methods tested. After thermocycling, the samples in the RXU/MM, RXU/UA, and GCO/MM groups showed no significant changes in the μTBS values, whereas the others showed a significant reduction. CONCLUSIONS The bond strength of HSCRB was influenced by the chemical conditioning, SARs, and aging. γ-MPTS and 10-MDP application yielded higher μTBS values of mechanically treated HSCRB than the UA.
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Affiliation(s)
- Hao Yu
- Department of Prosthodontics, School and Hospital of Stomatology, Fujian Medical University, Fuzhou, China; Department of Applied Prosthodontics, Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki, Japan.
| | - Keiichi Yoshida
- Clinic of Fixed Prosthodontics, Nagasaki University Hospital, Nagasaki, Japan
| | - Hui Cheng
- Department of Prosthodontics, School and Hospital of Stomatology, Fujian Medical University, Fuzhou, China
| | - Takashi Sawase
- Department of Applied Prosthodontics, Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki, Japan
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Lee C, Yamaguchi S, Ohta K, Imazato S. Mechanical properties of computer-aided design/computer-aided manufacturing resin composites assuming perfect silane coupling using in silico homogenization of cryo-electron microscopy images. J Prosthodont Res 2019; 63:90-94. [DOI: 10.1016/j.jpor.2018.09.001] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2018] [Revised: 09/25/2018] [Accepted: 09/27/2018] [Indexed: 11/13/2022]
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Miura S, Kasahara S, Yamauchi S, Katsuda Y, Harada A, Aida J, Egusa H. A possible risk of CAD/CAM-produced composite resin premolar crowns on a removable partial denture abutment tooth: a 3-year retrospective cohort study. J Prosthodont Res 2018; 63:78-84. [PMID: 30584052 DOI: 10.1016/j.jpor.2018.08.005] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2018] [Revised: 08/15/2018] [Accepted: 08/21/2018] [Indexed: 11/25/2022]
Abstract
PURPOSE To evaluate the early performance of computer-aided design/computer-aided manufacturing (CAD/CAM)-produced composite resin crown (CAD/CAM composite crown) treatment on premolars, specifically, placement on a removable partial denture (RPD) abutment tooth, and the distalmost tooth in the dental arch, as possible clinical risk factors. METHODS A retrospective cohort study (April 2014 to July 2017) was performed utilizing the clinical records of patients who received a premolar CAD/CAM composite crown treatment. The variables of time of treatment for (1) successful crowns (complication event-free) and (2) surviving crowns (clinically functional including re-luted) were estimated using Kaplan-Meier analysis. Survival distributions regarding "RPD abutment tooth" and "distalmost tooth" were analyzed with the log-rank test. Multilevel survival analyses were used to identify hazard ratios and associated risk factors. RESULTS Five hundred and forty-seven crowns were evaluated (mean follow-up time 1.3±0.9years) in 327 patients. A total of 87 crowns had at least one complication, with loss of crown retention being the most common (70 crowns). Estimated success and survival rates at 3 years were 71.7% and 96.4%, respectively. The risk of complications was significantly higher for an RPD abutment tooth than for a non-RPD abutment tooth. There was no significant difference between the distalmost tooth and non-distalmost tooth in the dental arch. CONCLUSIONS The demonstrated complication rate for CAD/CAM composite crowns placed on premolars was 15.9% over a period of up to 3 years. There was a substantial risk of complications with placement of such a crown on an RPD abutment tooth.
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Affiliation(s)
- Shoko Miura
- Division of Molecular and Regenerative Prosthodontics, Tohoku University Graduate School of Dentistry, Sendai, Japan; Liaison Center for Innovative Dentistry, Tohoku University Graduate School of Dentistry, Sendai, Japan; Division of Fixed Prosthodontics, Meikai University School of Dentistry, Sakado, Japan.
| | - Shin Kasahara
- Division of Molecular and Regenerative Prosthodontics, Tohoku University Graduate School of Dentistry, Sendai, Japan
| | - Shinobu Yamauchi
- Division of Molecular and Regenerative Prosthodontics, Tohoku University Graduate School of Dentistry, Sendai, Japan; Dr. Anthony Volpe Research Center, ADA Foundation, Gaithersburg, MD, USA
| | - Yusuke Katsuda
- Division of Molecular and Regenerative Prosthodontics, Tohoku University Graduate School of Dentistry, Sendai, Japan
| | - Akio Harada
- Division of Molecular and Regenerative Prosthodontics, Tohoku University Graduate School of Dentistry, Sendai, Japan
| | - Jun Aida
- Department of International and Community Oral Health, Tohoku University Graduate School of Dentistry, Sendai, Japan
| | - Hiroshi Egusa
- Division of Molecular and Regenerative Prosthodontics, Tohoku University Graduate School of Dentistry, Sendai, Japan; Liaison Center for Innovative Dentistry, Tohoku University Graduate School of Dentistry, Sendai, Japan.
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Mine A, Kabetani T, Kawaguchi-Uemura A, Higashi M, Tajiri Y, Hagino R, Imai D, Yumitate M, Ban S, Matsumoto M, Yatani H. Effectiveness of current adhesive systems when bonding to CAD/CAM indirect resin materials: A review of 32 publications. JAPANESE DENTAL SCIENCE REVIEW 2018; 55:41-50. [PMID: 30733844 PMCID: PMC6354283 DOI: 10.1016/j.jdsr.2018.10.001] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2018] [Revised: 09/03/2018] [Accepted: 10/25/2018] [Indexed: 11/25/2022] Open
Abstract
The purpose of this review was to assess the available literature regarding bonding between current adhesive systems and computer-aided design/computer-aided manufacturing (CAD/CAM) indirect resin materials, to provide clinicians with a comparative overview of the relevant bonding procedures. An electronic search was performed through PubMed based on the keywords CAD/CAM and dental bonding. Additional relevant literature was obtained from the citations in the articles. A total of 313 papers were identified, of which 281 were excluded as being unsuitable, and an additional 3 papers were identified, giving a total of 32 articles that are included in this review. Based on this survey, it is recommended that microretentive surfaces should be generated by either blasting or hydrofluoric acid etching. This initial process should be followed by silanization to ensure chemical adhesion prior to bonding to CAD/CAM indirect resin composite materials (including Lava Ultimet, KATANA AVENCIA block, Gradia Block, Cerasmart, Paradigm, and Block HC) and CAD/CAM polymer-infiltrated ceramics (such as Vita Enamic). The use of materials containing methyl methacrylate (MMA) also appears to improve the bonding of CAD/CAM poly(methyl methacrylate) (PMMA) resin materials (including XHIPC-CAD/CAM, artBloc Temp, and Telio).
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Affiliation(s)
- Atsushi Mine
- Department of Fixed Prosthodontics, Osaka University Graduate School of Dentistry, Osaka 565-0871, Japan
| | - Tomoshige Kabetani
- Department of Fixed Prosthodontics, Osaka University Graduate School of Dentistry, Osaka 565-0871, Japan
| | - Asuka Kawaguchi-Uemura
- Department of Fixed Prosthodontics, Osaka University Graduate School of Dentistry, Osaka 565-0871, Japan
| | - Mami Higashi
- Department of Fixed Prosthodontics, Osaka University Graduate School of Dentistry, Osaka 565-0871, Japan
| | - Yuko Tajiri
- Department of Fixed Prosthodontics, Osaka University Graduate School of Dentistry, Osaka 565-0871, Japan
| | - Ryosuke Hagino
- Department of Fixed Prosthodontics, Osaka University Graduate School of Dentistry, Osaka 565-0871, Japan
| | - Dai Imai
- Department of Fixed Prosthodontics, Osaka University Graduate School of Dentistry, Osaka 565-0871, Japan
| | - Masahiro Yumitate
- Department of Fixed Prosthodontics, Osaka University Graduate School of Dentistry, Osaka 565-0871, Japan
| | - Shintaro Ban
- Department of Fixed Prosthodontics, Osaka University Graduate School of Dentistry, Osaka 565-0871, Japan
| | - Mariko Matsumoto
- Department of Restorative Dentistry, Hokkaido University Graduate School of Dental Medicine, Hokkaido 060-8586, Japan
| | - Hirofumi Yatani
- Department of Fixed Prosthodontics, Osaka University Graduate School of Dentistry, Osaka 565-0871, Japan
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Fatigue behavior and crack initiation of CAD/CAM resin composite molar crowns. Dent Mater 2018; 34:1578-1584. [DOI: 10.1016/j.dental.2018.07.002] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2018] [Revised: 06/12/2018] [Accepted: 07/09/2018] [Indexed: 11/21/2022]
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NARUSE Y, TAKAGAKI T, MATSUI N, SATO T, ALI A, IKEDA M, NIKAIDO T, TAGAMI J. Effect of alumina-blasting pressure on adhesion of CAD/CAM resin block to dentin. Dent Mater J 2018; 37:805-811. [DOI: 10.4012/dmj.2017-237] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Affiliation(s)
- Yuki NARUSE
- Cariology and Operative Dentistry Department, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University
| | - Tomohiro TAKAGAKI
- Cariology and Operative Dentistry Department, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University
| | - Naoko MATSUI
- Cariology and Operative Dentistry Department, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University
| | - Takaaki SATO
- Cariology and Operative Dentistry Department, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University
| | - Alghamdi ALI
- Cariology and Operative Dentistry Department, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University
| | - Masaomi IKEDA
- Oral Prosthetic Engineering, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University
| | - Toru NIKAIDO
- Cariology and Operative Dentistry Department, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University
| | - Junji TAGAMI
- Cariology and Operative Dentistry Department, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University
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Tekçe N, Tuncer S, Demirci M. The effect of sandblasting duration on the bond durability of dual-cure adhesive cement to CAD/CAM resin restoratives. J Adv Prosthodont 2018; 10:211-217. [PMID: 29930791 PMCID: PMC6004352 DOI: 10.4047/jap.2018.10.3.211] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2017] [Revised: 01/27/2018] [Accepted: 02/27/2018] [Indexed: 11/08/2022] Open
Abstract
PURPOSE To evaluate the effect of prolonged sandblasting on the bond durability of dual-cure adhesive resin cement to computer-aided design and computer-aided manufacturing (CAD/CAM) restoratives. MATERIALS AND METHODS Nano-ceramic LAVA Ultimate and hybrid-ceramic VITA Enamic CAD/CAM blocks were used for this study. Each CAD/CAM block was sectioned into slabs of 4-mm thickness for the microtensile test (µTBS) test and 2-mm thickness for the surface roughness test. Three groups were created according to the sandblasting protocols; group 1: specimens were sandblasted for 15 seconds, group 2: specimens were sandblasted for 30 seconds, and group 3: specimens were sandblasted for 60 seconds. After sandblasting, all specimens were luted using RelyX Ultimate Clicker. Half the specimens were subjected to µTBS tests at 24 hours, and the other half were subjected to tests after 5000 thermocycles. Additionally, a total of 96 CAD/CAM block sections were prepared for surface roughness tests and scanning electron microscopy (SEM) evaluations. The Mann-Whitney U test, Kruskal-Wallis one-way analysis of variance, and Dunn's post hoc test were used to compare continuous variables among the groups. RESULTS At baseline, group 1, group 2, and group 3 exhibited statistically similar µTBS results for LAVA. However, group 3 had significantly lower µTBS values than groups 1 and 2 for VITA. After 5000 thermocycles, µTBS values significantly decreased for each block (P<.05). CONCLUSION It is important to perform controlled sandblasting because it may affect bond strength results. Sixty seconds of sandblasting disturbs the initial µTBS values and the stability of adhesion of CAD/CAM restoratives to dual-cure adhesive resin cement for VITA Enamic.
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Affiliation(s)
- Neslihan Tekçe
- Department of Restorative Dentistry, Faculty of Dentistry, University of Kocaeli, Kocaeli, Turkey
| | - Safa Tuncer
- Department of Restorative Dentistry, Faculty of Dentistry, University of Istanbul, Istanbul, Turkey
| | - Mustafa Demirci
- Department of Restorative Dentistry, Faculty of Dentistry, University of Istanbul, Istanbul, Turkey
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Kawaguchi-Uemura A, Mine A, Matsumoto M, Tajiri Y, Higashi M, Kabetani T, Hagino R, Imai D, Minamino T, Miura J, Yatani H. Adhesion procedure for CAD/CAM resin crown bonding: Reduction of bond strengths due to artificial saliva contamination. J Prosthodont Res 2018; 62:177-183. [DOI: 10.1016/j.jpor.2017.08.006] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2017] [Revised: 08/03/2017] [Accepted: 08/16/2017] [Indexed: 10/18/2022]
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Bellan MC, Cunha PFJSD, Tavares JG, Spohr AM, Mota EG. Microtensile bond strength of CAD/CAM materials to dentin under different adhesive strategies. Braz Oral Res 2017; 31:e109. [PMID: 29267670 DOI: 10.1590/1807-3107bor-2017.vol31.0109] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2017] [Accepted: 11/23/2017] [Indexed: 11/21/2022] Open
Affiliation(s)
- Mariá Cortina Bellan
- Pontifícia Universidade Católica da Universidade Federal do Rio Grande do Sul – PUC-RS, Brazil
| | | | - Julieta Gomes Tavares
- Pontifícia Universidade Católica da Universidade Federal do Rio Grande do Sul – PUC-RS, Brazil
| | - Ana Maria Spohr
- Pontifícia Universidade Católica da Universidade Federal do Rio Grande do Sul – PUC-RS, Brazil
| | - Eduardo Gonçalves Mota
- Pontifícia Universidade Católica da Universidade Federal do Rio Grande do Sul – PUC-RS, Brazil
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Mushashe AM, Gonzaga CC, Cunha LFD, Furuse AY, Moro A, Correr GM. Effect of Enamel and Dentin Surface Treatment on the Self-Adhesive Resin Cement Bond Strength. Braz Dent J 2016; 27:537-542. [PMID: 27982230 DOI: 10.1590/0103-6440201600445] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2016] [Accepted: 06/30/2016] [Indexed: 11/21/2022] Open
Abstract
Abstract The aim of this study was to evaluate the effect of enamel and dentin surface treatment on the micro-shear bond strength of self-adhesive cement. Seventy-two extracted third molars had their crowns embedded in acrylic resin and worn to obtain a flat enamel or dentin surface. The enamel and dentin specimens were randomly assigned to 8 groups (n=12) that were based on surface treatment (11.5% polyacrylic acid solution or no treatment), substrate condition (wet or dry) and storage period (1 day or 90 days), and treated accordingly. Cylinders (1 × 1 mm) were fabricated using self-adhesive resin cement (RelyX U200) following the manufacturer's instructions. The specimens were stored in distilled water at 37 °C for either 1 day or 90 days and subjected to micro-shear bond strength test (EMIC DL 2000 at 0.5 mm/min). After this, the failure type of the specimens was determined. Data were subjected to statistical analysis (a=0.05). According to the results, the 11.5% polyacrylic acid application decreased the bond strength in both enamel and dentin samples. The moist groups showed higher bond strength than the dry ones, regardless of the substrate and surface treatment. Storage period did not influence bond strength. In conclusion, surface treatment with 11.5% polyacrylic acid and absence of moisture decreased the bond strength of the resin-cement (RelyU200), regardless of the storage period.
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