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Hatami M, Massoumi F, Safarian MS. Effect of Combined Application of Hydrofluoric and Phosphoric Acids and Active Irrigation with a Microbrush on Shear Bond Strength of Lithium Disilicate Ceramics to Enamel. Adv Biomed Res 2024; 13:5. [PMID: 38525401 PMCID: PMC10958724 DOI: 10.4103/abr.abr_181_23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2023] [Revised: 08/10/2023] [Accepted: 08/27/2023] [Indexed: 03/26/2024] Open
Abstract
Background This study assessed the effect of combined application of hydrofluoric (HF) acid and phosphoric acid (PA) and active irrigation (AI) with a microbrush on shear bond strength (SBS) of lithium disilicate (LDS) ceramics to enamel. Materials and Methods This in vitro study was conducted on 40 extracted teeth that received enamel preparation with a #12 cylindrical bur. Forty IPS e.max LT rods (3mm diameter, 6mm height) were fabricated and randomly assigned to four groups (n = 10) for surface treatment with 5% HF (group 1), 5% HF and AI with a microbrush for 20 seconds (group 2), 5% HF and 32% PA (group 3), and 5% HF and 32% PA plus AI with a microbrush for 20 seconds (group 4). Silane and Choice 2 cement were used for bonding rods to enamel. The SBS was measured by a universal testing machine. Data were analyzed by two-way analysis of variance (ANOVA), Bonferroni, and Chi-square tests (alpha = 0.05). Results Group 4 had the highest SBS, and group 1 had the lowest SBS (P < 0.05). Group 2 had a significantly higher SBS than group 1, and group 4 had a significantly higher SBS than group 3. AI with a microbrush significantly increased the SBS (P < 0.05), but the application of PA caused no significant change in SBS (P > 0.05). The interaction effect of PA and AI on SBS was not significant (P > 0.05). Conclusion The application of PA in addition to 5% HF acid caused no significant change in the SBS of LDS ceramic to enamel. However, AI with a microbrush significantly increased the SBS.
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Affiliation(s)
- Masoud Hatami
- Department of Periodontics, Faculty of Dentistry, Shahid Beheshti Medical University, Tehran, Iran
| | - Farhood Massoumi
- Department of Prosthodontics, School of Dentistry, Shahid Beheshti University of Medical Sciences, Arabi Ave, Iran
| | - Mohammad Sadegh Safarian
- Department of Periodontics, Faculty of Dentistry, Shahid Beheshti Medical University, Tehran, Iran
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Cheng PJ, Liu SM, Huang SM, Wang JC, Hung CC, Chen WC. Survival assessment of fractured porcelain-fused-to-metal crowns surface roughened by sandblasted and repaired by composite resin after in vitro thermal fatigue. J Dent Sci 2023; 18:1706-1715. [PMID: 37799887 PMCID: PMC10547947 DOI: 10.1016/j.jds.2023.01.003] [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: 12/19/2022] [Revised: 01/02/2023] [Indexed: 01/15/2023] Open
Abstract
Background/purpose Intraoral repair usually takes the convenience of the patient's daily life as the starting point, taking into account the bonding strength, operational feasibility, and safety. This study aimed to evaluate the survival of composite resin by simulating cavity fracture repair in porcelain-fused-to-metal (PFM) crowns and referring to the G.V. Black classification of caries as ceramic- and metal-site exposure. Materials and methods Mechanical sandblast experimental and a nonsandblast control groups comprised 120 samples, and interfacial locking was enhanced through acid etching, bonding, and light-curing composite resin restoration. Classes of VI buccal (B), III mesial (M), and IV mesiobuccal (MB) types, were investigated. Load tests were performed on two sets, with one set at room temperature for 24 h and the other via thermal cycling at 5 °C/50 °C 720 times. Loading was gradually applied to the samples until a maximum of 450 N was reached. Results Results showed that 24 h survival rates of B-, M - , and MB-repaired PFM crowns were 88%, 84%, and 88%, respectively. The repaired PFM survival rates for B, M, and MB were 52%, 44%, and 28%, respectively, after thermal cycling and loading tests. Multiple logistic regression and chi-square test (α = 0.05) showed that the regression results of factors affecting survival assessment were only significant between groups after thermal fatigue (P < 0.05). Survival rate of repairing metal-site in the MB model was significantly higher than that of ceramic-sites repairing in non-blasted samples. For the MB cavity model, sandblasting can significantly improve the survival rate of the repair of ceramic parts in the MB model (P < 0.05). Conclusion Our results suggest that sandblasting can be further considered, especially for MB cavity fractures when ceramic-site restorations are required.
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Affiliation(s)
- Po-Jen Cheng
- Advanced Medical Devices and Composites Laboratory, Department of Fiber and Composite Materials, Feng Chia University, Taichung, Taiwan
- Division of Dental Research, Department of Dentistry, Kaohsiung Municipal Min-Sheng Hospital, Kaohsiung, Taiwan
| | - Shih-Ming Liu
- Advanced Medical Devices and Composites Laboratory, Department of Fiber and Composite Materials, Feng Chia University, Taichung, Taiwan
| | - Ssu-Meng Huang
- Advanced Medical Devices and Composites Laboratory, Department of Fiber and Composite Materials, Feng Chia University, Taichung, Taiwan
| | - Jen-Chyan Wang
- Division of Prosthodontics, Department of Dentistry, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan
- School of Dentistry, College of Dental Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Chun-Cheng Hung
- Division of Prosthodontics, Department of Dentistry, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan
- School of Dentistry, College of Dental Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Wen-Cheng Chen
- Advanced Medical Devices and Composites Laboratory, Department of Fiber and Composite Materials, Feng Chia University, Taichung, Taiwan
- School of Dentistry, College of Dental Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
- Department of Fragrance and Cosmetic Science, College of Pharmacy, Kaohsiung Medical University, Kaohsiung, Taiwan
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Nogueira IDO, Pereira CNDB, Abreu LG, Diniz IMA, Magalhães CSD, Silveira RRD. Do different protocols affect the success rate or bond strength of glass-ceramics repaired with composite resin? A systematic review and meta-analysis. J Prosthet Dent 2023:S0022-3913(23)00432-8. [PMID: 37635007 DOI: 10.1016/j.prosdent.2023.06.020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2022] [Revised: 06/25/2023] [Accepted: 06/26/2023] [Indexed: 08/29/2023]
Abstract
STATEMENT OF PROBLEM Intraoral repair techniques prevent unnecessary replacement of ceramic restorations, thereby increasing the survival rate. However, adhesion between ceramics and the composite resin is challenging and how different protocols influence adhesion is unclear. PURPOSE The purpose of this systematic review and meta-analysis was to analyze the influence of different protocols on repairing glass-ceramic surfaces with composite resins. MATERIAL AND METHODS PubMed, Scopus, ISI Web of Science, and Embase electronic databases were searched to select studies comparing bond strength values or survival rates of glass-ceramic repaired with composite resins using different surface treatment protocols. No publication year or language restriction was applied. Data sets were extracted from all included studies, and the mean differences calculated. A 95% confidence interval was calculated by using the random effect model (Rev Man 5.4). RESULTS The search identified 5037 studies, and 165 were assessed for eligibility. Finally, 123 in vitro studies were included in the systematic review and 48 in the meta-analysis. Considering different glass-ceramics, bond strength tests, and aged or not aged specimens, 37 meta-analyses found the effect of repair protocols: only adhesive, silane plus adhesive alone or preceded by hydrofluoric (HF) acid, airborne-particle abrasion (APA) with Al2O3 particles, silica-coated APA (SCAPA), diamond rotary instrument (DRI), and laser irradiation (LI). CONCLUSIONS For feldspathic porcelain, HF acid, APA, SCAPA, or DRI improved the repair micromechanical retention; applying silane is essential to HF-conditioned surfaces but the use of adhesive is optional when silane is applied. Results for leucite and lithium disilicate were inconclusive in terms of suggesting a treatment other than HF acid plus silane and adhesive applications.
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Affiliation(s)
- Iara de O Nogueira
- Department of Restorative Dentistry, Federal University of Minas Gerais (UFMG), Belo Horizonte, Minas Gerais, Brazil
| | - Carolina N de B Pereira
- Department of Restorative Dentistry, Federal University of Minas Gerais (UFMG), Belo Horizonte, Minas Gerais, Brazil
| | - Lucas G Abreu
- Department of Child and Adolescent Oral Health, Federal University of Minas Gerais (UFMG), Belo Horizonte, Minas Gerais, Brazil..
| | - Ivana M A Diniz
- Department of Restorative Dentistry, Federal University of Minas Gerais (UFMG), Belo Horizonte, Minas Gerais, Brazil
| | - Cláudia S de Magalhães
- Department of Restorative Dentistry, Federal University of Minas Gerais (UFMG), Belo Horizonte, Minas Gerais, Brazil
| | - Rodrigo R da Silveira
- Department of Restorative Dentistry, Federal University of Minas Gerais (UFMG), Belo Horizonte, Minas Gerais, Brazil
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Tang L, Wang N, Chen S. Clinical performance of two different adhesive strategies for metal-ceramic cracks repairing and related in vitro study. Dent Mater J 2021; 40:781-791. [PMID: 33814532 DOI: 10.4012/dmj.2020-260] [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
To evaluate the bonding reliability of a universal adhesive compared to a commercial ceramic repair system for metal-ceramic cracks. In vitro part: sixty specimens with porcelain, metal and porcelain-metal substrate were fabricated. Half specimens were bonded by Singlebond Universal adhesive and Filtek Z350 resin composite. The other were processed by Ceramic Repair N. Shear bond strength was tested. In vivo part: forty patients with sixty ceramic fractured porcelain-fused-metal restorations were involved. Half were repaired by Singlebond Universal and Filtek Z350. The other were restored by Ceramic Repair N. The mean observation period was 65 weeks. Results showed the bond strength ranged from 13.97 MPa to 15.85 MPa using two different repair system on different substrate with no statistical difference. There was no statistical difference between the two adhesive system in survival rate according to Kaplan-Meier analysis. The universal adhesive had a similar repair performance compared to commercial ceramic repair system.
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Affiliation(s)
- Lijie Tang
- Beijing Stomatological Hospital, Capital Medical University
| | - Na Wang
- Beijing Stomatological Hospital, Capital Medical University
| | - Su Chen
- Beijing Stomatological Hospital, Capital Medical University
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AL‐Turki L, Merdad Y, Abuhaimed TA, Sabbahi D, Almarshadi M, Aldabbagh R. Repair bond strength of dental computer‐aided design/computer‐aided manufactured ceramics after different surface treatments. J ESTHET RESTOR DENT 2020; 32:726-733. [DOI: 10.1111/jerd.12635] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2020] [Revised: 06/22/2020] [Accepted: 07/18/2020] [Indexed: 11/29/2022]
Affiliation(s)
- Lulwa AL‐Turki
- Department of Oral and Maxillofacial Prosthodontics, Faculty of Dentistry King Abdulaziz University Jeddah Saudi Arabia
| | - Yasser Merdad
- Department of Operative Dentistry, Faculty of Dentistry King Abdulaziz University Jeddah Saudi Arabia
| | - Tariq A. Abuhaimed
- Department of Operative Dentistry, Faculty of Dentistry King Abdulaziz University Jeddah Saudi Arabia
| | - Dania Sabbahi
- Department of Dental Public Health, Faculty of Dentistry King Abdulaziz University Jeddah Saudi Arabia
| | | | - Raghad Aldabbagh
- Department of Oral and Maxillofacial Prosthodontics, Faculty of Dentistry King Abdulaziz University Jeddah Saudi Arabia
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Alzainal AH, Majud AS, Al-Ani AM, Mageet AO. Orthodontic Bonding: Review of the Literature. Int J Dent 2020; 2020:8874909. [PMID: 32733564 PMCID: PMC7376407 DOI: 10.1155/2020/8874909] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2020] [Accepted: 06/30/2020] [Indexed: 11/17/2022] Open
Abstract
BACKGROUND Patients seeking orthodontic treatment are increasing, and clinicians often have to place brackets on various surfaces aside from enamel. It is crucial to know what materials or instruments are required to bond brackets to each surface. OBJECTIVE This study aims to serve as a clinical guideline for the safest and most effective approaches taken to condition various surfaces for bonding to orthodontic brackets and provide background knowledge on the subject. MATERIALS AND METHODS PubMed and EBSCO databases were searched, along with the use of Google Scholar search engine, to obtain relevant articles published in English in peer-reviewed journals, from 1955 to 2020. Keywords used were Shear bond strength; Orthodontic bracket; Base design; Etching; Sandblasting; Laser; Conditioning; Enamel; Ceramic; Porcelain; Gold; Amalgam; Composite. CONCLUSION Even though orthophosphoric acid is the most widely used enamel conditioning agent, laser etching should be considered to avoid enamel decalcification. Hydrofluoric acid is the current standard for ceramic conditioning; however, its use intraorally should be minimized due to its toxicity. Orthophosphoric acid, CoJet-Sand air abrasion, and laser etching are viable alternatives for conditioning ceramic. Monobond Etch & Prime is toxic and should not be used intraorally. Composite can be conditioned by bur roughening, and the use of ceramic brackets is recommended. Amalgam and gold surfaces can be conditioned adequately by air abrasion. Despite the claims of many authors, the maximum shear forces that orthodontic brackets are subjected to are not 6-8 mega pascal (MPa). Further investigation is required in that regard. More in vivo studies need to be performed to confirm the in vitro results.
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Gul P, Altınok-Uygun L. Repair bond strength of resin composite to three aged CAD/CAM blocks using different repair systems. J Adv Prosthodont 2020; 12:131-139. [PMID: 32601532 PMCID: PMC7314627 DOI: 10.4047/jap.2020.12.3.131] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2019] [Revised: 04/01/2020] [Accepted: 04/29/2020] [Indexed: 12/05/2022] Open
Abstract
PURPOSE The purpose of this study is to evaluate the repair bond strength of a nanohybrid resin composite to three CAD/CAM blocks using different intraoral ceramic repair systems. MATERIALS AND METHODS Three CAD/CAM blocks (Lava Ultimate, Cerasmart, and Vitablocks Mark II) were selected for the study. Thirty-two specimens were fabricated from each block. Specimens were randomly divided into eight groups for the following different intraoral repair systems: Group 1: control group (no treatment); Group 2: 34.5% phosphoric acid etching; Group 3: CoJet System; Group 4: Z-Prime Plus System; Group 5: GC Repair System; Group 6: Cimara System; Group 7: Porcelain Repair System; and Group 8: Clearfil Repair System. Then, nanohybrid resin composite (Tetric Evo Ceram) was packed onto treated blocks surfaces. The specimens were thermocycled before application of repair systems and after application of composite resin. After second thermal cycling, blocks were cut into bars (1 × 1 × 12 mm3) for microtensile bond strength tests. Data were analyzed using two-way ANOVA and Tukey's HSD test (α=.05). RESULTS Cimara System, Porcelain Repair, and Clearfil Repair systems significantly increased the bond strength of nanohybrid resin composite to all CAD/CAM blocks when compared with the other tested repair systems (P<.05). In terms of CAD/CAM blocks, the lowest values were observed in Vitablocks Mark II groups (P<.05). CONCLUSION All repair systems used in the study exhibited clinically acceptable bond strength and can be recommended for clinical use.
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Affiliation(s)
- Pinar Gul
- Department of Restorative Dentistry, Faculty of Dentistry, Atatürk University, Erzurum, Turkey
| | - Latife Altınok-Uygun
- Graduate Department of Restorative Dentistry, Faculty of Dentistry, Atatürk University, Erzurum, Turkey
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Çelik E, Sahin SC, Dede DÖ. Shear Bond Strength of Nanohybrid Composite to the Resin Matrix Ceramics After Different Surface Treatments. Photomed Laser Surg 2018; 36:424-430. [PMID: 30020854 DOI: 10.1089/pho.2018.4467] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
OBJECTIVE The purpose of this study was to evaluate the effects of different surface treatments on the shear bond strength (SBS) of a composite resin to the various resin matrix ceramics (RMC). BACKGROUND Clinical applications of physical and chemical surface conditioning methods may be required for RMC to optimize the adhesion of additional resin materials. MATERIALS AND METHODS Ninety-nine RMC specimens (6 × 6 × 2 mm) were prepared from a resin nanoceramic (RNC), a polymer-infiltrated hybrid ceramic (PIHC), and a flexible hybrid ceramic (FHC) block with a cutting machine under copious water. All specimens divided randomly into three surface treatment subgroups (n = 11): (1) untreated (Cnt), (2) tribochemical silica coated (Tbc), and (3) neodymium-doped yttrium aluminum garnet (Nd:YAG) laser irradiated with 3 W (150 mJ/pulse, 20 Hz) for 20 sec. A nanohybrid composite resin was layered with a disc-shape mold (2 × 3 mm) onto the ceramics and submitted to thermal cycling (3000 cycles, 5-55°C). The SBS test of specimens was performed using a universal testing machine. Data were statistically analyzed with two-way analysis of variance (ANOVA) and Tukey HSD test (α = 0.05). RESULTS The type of RMC, surface treatments, and their interactions was statistically significant on SBS, according to the ANOVA (p < 0.05). Both the Tbc and Lsr surface treatments significantly increased the SBS values of FHC (p < 0.001), while significant increases were observed only for Lsr0applied RNC and Tbc applied PIHC groups (p < 0.001). CONCLUSIONS The tribochemical silica coating and laser irradiation techniques may be suitable for improving the surface topography of specific types of RMC. While the same surface treatment technique may not provide similar successful results for all types of RMC, it is recommended to choose the most effective and reliable technique for clinical application.
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Affiliation(s)
- Ersan Çelik
- 1 Department of Prosthodontics, Faculty of Dentistry, Ordu University , Ordu, Turkey
| | - Sezgi Cinel Sahin
- 2 Department of Prosthodontics, Faculty of Dentistry, Pamukkale University , Denizli, Turkey
| | - Doğu Ömür Dede
- 1 Department of Prosthodontics, Faculty of Dentistry, Ordu University , Ordu, Turkey
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Hakimaneh SMR, Shayegh SS, Ghavami-Lahiji M, Chokr A, Moraditalab A. Effect of Silane Heat Treatment by Laser on the Bond Strength of a Repair Composite to Feldspathic Porcelain. J Prosthodont 2018; 29:49-55. [PMID: 29380487 DOI: 10.1111/jopr.12762] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/16/2017] [Indexed: 11/26/2022] Open
Abstract
PURPOSE Ceramic restoration fracture may occur in the oral cavity. Intraoral repair of fractured porcelain could be advantageous to both patient and dentist. The aim of this study was to evaluate the effect of heat treatment of the silane coupling agent by Er:YAG and CO2 lasers on the microshear bond strength of a repair composite to feldspathic porcelain. MATERIALS AND METHODS Sixty ceramic blocks were prepared and randomly divided into six groups (n = 10): (i) HF + silane (HS); (ii) silane + CO2 laser (SC); (iii) CO2 laser + silane (CS); (iv) silane + Er:YAG laser (SE); (v) Er:YAG laser + silane (ES); (vi) bur + HF + silane (BuHS). An adhesive resin was applied to the prepared ceramic surfaces and light-cured. Two transparent plastic tubes were placed perpendicularly to each ceramic block. The composite resin was then placed on the treated ceramic surface and light-cured for 40 seconds. The bonded blocks were stored in distilled water at 37°C for 24 hours and subjected to 3000 thermocycles. Microshear bond strength (μSBS) tests were performed using a wire and loop method. Data were analyzed using one-way ANOVA and Duncan's multiple range tests (p ≤ 0.05). RESULTS The comparison of the mean μSBS values showed no significant differences between the ES and HS groups (p = 0.914). On the other hand, the specimens in these groups exhibited significantly higher bond strengths than those in the other groups (p < 0.01). The mean μSBS of the BuHS group was statistically similar to that of CS and SE groups (p > 0.05). The μSBS for the SC group was significantly lower than that of the other groups (p < 0.01), with the exception of the CS group (p = 0.674). CONCLUSIONS Treatment with Er:YAG laser prior to silane application can be as effective as HF etching. Heat treatment of silane by CO2 or Er:YAG lasers does not improve the bond strength between feldspathic porcelain and composite resin.
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Affiliation(s)
| | | | - Mehrsima Ghavami-Lahiji
- Department of Dental Biomaterials, School of Dentistry/Research Center for Science and Technology in Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Ahmad Chokr
- Department of Oral and Maxillofacial Surgery, Taleghani Hospital, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Azizollah Moraditalab
- Department of Prosthodontics, Faculty of Dentistry, Mashhad University of Medical Sciences, Mashhad, Iran
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Özdemir H, Yanikoglu ND. The Bond Strength of Nanohybrid and Nanoceramic Composites to Feldspathic Porcelain. Contemp Clin Dent 2018; 8:558-564. [PMID: 29326506 PMCID: PMC5754976 DOI: 10.4103/ccd.ccd_504_17] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
Background: Porcelain fracture is the most important problem in fixed prosthetic restorations. The replacement of fractured restoraions isn’t often prefer by patients and dentists. Intraoral repair of fractured porcelain is a big alternative for patient and dentist. For this reason, dentists try to improve different surface treatments to increase the bond strength between porcelain and repair materials such as composite resins. Aims: The aim of this study was to evaluate the shear bond strength (SBS) of nano-hybrid (Nh.com) and nano-ceramic composite resins (Nc.com) to this feldspathic porcelains (Vita and Ivoclar). Settings and Design: 120 ceramic disc were fabricated from feldspathic porcelain. Materials and Methods: The following surface treatment was applied on the ceramic surface: 1) Hydrofluoric acid+silane, 2) Air-abrasion+silane, 3) Air-abrasion=Control group. Nh.com and Nc.com was placed on the porcelain surface. Half of the specimens were stored in 37 ± 2oC distilled water and another half were subjected to thermocycling before SBS. The samples placed in an universal testing machine and applied shear force until seperation occured. Statistical Analysis Used: The data were analyzed by multi-way analysis of variance (ANOVA) and Duncan test (P <0.05). Results: The results show that Ivoclar and Vita had almost equal fracture values. Nh.com showed high bond strength than Nc.com. In the Ivoclar porcelain, hydrofluoric acid etching had highest fracture values than other surface treatments, and in the vita porcelain air-abrasion had a little difference from hydrofluoric acid etching. Conclusions: Different surface treatments show different effect on SBS between feldspathic porcelain and composite resins.
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Affiliation(s)
- Hatice Özdemir
- Department of Prosthodontics, Faculty of Dentistry, Atatürk University, Erzurum, Turkey
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Samimi P, Kazemian M, Shirban F, Alaei S, Khoroushi M. Bond strength of composite resin to white mineral trioxide aggregate: Effect of different surface treatments. J Conserv Dent 2018; 21:350-353. [PMID: 30122811 PMCID: PMC6080179 DOI: 10.4103/jcd.jcd_201_16] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Background: The main aim of restorative dentistry is to restore and preserve dental health with the use of appropriate restorative modalities to protect the pulp and restore its function. This study compared the effect of different surface treatments of mineral trioxide aggregate (MTA) on the bond strength of composite resin to MTA. Materials and Methods: Forty cylindrical acrylic blocks with a hole were prepared and filled by ProRoot MTA. The samples were assigned to four groups: Group 1 – no surface treatment; Group 2 – phosphoric acid etching; Group 3 – sandblasting; and Group 4 – hydrofluoric acid (HF) etching, rinsing, and silane application. OptiBond Solo Plus adhesive was utilized in all the groups. Then, composite resin cylinders were bonded to sample surfaces. The samples were thermocycled and tested for microshear bond strength using a universal testing machine at a crosshead speed of 1 mm/min. Data were analyzed with Kruskal–Wallis and Mann–Whitney tests. Scanning electron microscopy images were prepared for each study group after surface treatments. Results: Means and standard deviations of bond strength values in study groups 1–4 were 14.83 ± 7.76, 21.85 ±7.99, 6.48 ± 3.89, and 26.01 ± 11.09 Mpa, respectively. Conclusions: Within the limitations of this study, phosphoric acid etching or HF etching plus silanization was preferred to surface treatment of MTA before composite resin bonding.
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Affiliation(s)
- Pouran Samimi
- Dental Materials Research Center and Department of Operative Dentistry, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Mehrdad Kazemian
- Department of Operative Dentistry, Isfahan (Khorasgan) Branch, Islamic Azad University, Isfahan, Iran
| | - Farinaz Shirban
- Dental Research Center, Department of Orthodontics, School of Dentistry, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Samane Alaei
- Department of Operative Dentistry, Isfahan (Khorasgan) Branch, Islamic Azad University, Isfahan, Iran
| | - Maryam Khoroushi
- Dental Materials Research Center and Department of Operative Dentistry, Isfahan University of Medical Sciences, Isfahan, Iran
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Tabatabaei MH, Chiniforush N, Namdar SF. Effects of different ceramic primers and surface treatments on the shear bond strength of restorative composite resin to zirconium. Laser Ther 2018; 27:111-117. [PMID: 30087530 DOI: 10.5978/islsm.18-or-10] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2017] [Accepted: 04/20/2018] [Indexed: 11/06/2022]
Abstract
Background and aims Data are limited about the effect of ceramic primers on the bond of zirconia to restorative resin composite. The aim of this study was to assess the effect of different surface treatments and two ceramic primers on shear bond strength (SBS) of zirconia to restorative resin composite. Materials and methods 100 samples of zirconium ceramic blocks were randomly divided into 5 groups (n = 20) and received the following surface treatments: a)Control groupb)AL2O3 abrasionc)Nd:YAG laserd)Er:YAG lasere)Bur preparation.Next, each group was divided into two subgroups of 20. In ten out of 20 specimens in each group, monobond plus and Tetric ceram composite resin were applied on the surface. ZPrime Plus and Elite composite were applied on the surfaces of the remaining 10 specimens in each group. Samples were then subjected to shear bond strength test in a universal testing machine until fracture. The mean SBS were calculated and statistically analyzed by two-way ANOVA and T-Test. P < 0.05 was considered statistically significant. Results In ZPrime plus subgroups, diamond bur yielded the highest bond strength. Laser groups showed no significant difference with the control group. In monobond plus subgroups, SBS of air abrasion and diamond bur subgroups was highest and Nd:YAG laser showed the lowest SBS. The lowest bond strength belonged to the Nd:YAG laser subgroup of monobond plus group. Conclusions Type of surface preparation significantly affected the bond strength.
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Affiliation(s)
- Masoumeh Hasani Tabatabaei
- Associate Professor of Restorative Dentistry, School of Dentistry, Tehran University of Medical Sciences, Tehran, Iran
| | - Nasim Chiniforush
- PhD candidate of laser dentistry, Laser Research Center of Dentistry, Dentistry Research Institute, Tehran University of Medical Sciences, Tehran, Iran
| | - Seyedeh Fatemeh Namdar
- Assistant Professor of Operative dentistry, Dental Materials Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
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Carrabba M, Vichi A, Louca C, Ferrari M. Comparison of traditional and simplified methods for repairing CAD/CAM feldspathic ceramics. J Adv Prosthodont 2017; 9:257-264. [PMID: 28874992 PMCID: PMC5582091 DOI: 10.4047/jap.2017.9.4.257] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2016] [Revised: 12/19/2016] [Accepted: 01/10/2017] [Indexed: 11/30/2022] Open
Abstract
PURPOSE To evaluate the adhesion to CAD/CAM feldspathic blocks by failure analysis and shear bond strength test (SBSt) of different restorative systems and different surface treatments, for purpose of moderate chipping repair. MATERIALS AND METHODS A self-adhering flowable composite (Vertise Flow, Kerr) containing bi-functional phosphate monomers and a conventional flowable resin composite (Premise Flow, Kerr) applied with and without adhesive system (Optibond Solo Plus, Kerr) were combined with three different surface treatments (Hydrofluoric Acid Etching, Sandblasting, combination of both) for repairing feldspathic ceramics. Two commercial systems for ceramic repairing were tested as controls (Porcelain Repair Kit, Ultradent, and CoJet System, 3M). SBSt was performed and failure mode was evaluated using a digital microscope. A One-Way ANOVA (Tukey test for post hoc) was applied to the SBSt data and the Fisher's Exact Test was applied to the failure analysis data. RESULTS The use of resin systems containing bi-functional phosphate monomers combined with hydrofluoric acid etching of the ceramic surface gave the highest values in terms of bond strength and of more favorable failure modalities. CONCLUSION The simplified repairing method based on self-adhering flowable resin combined with the use of hydrofluoric acid etching showed high bond strength values and a favorable failure mode. Repairing of ceramic chipping with a self-adhering flowable resin associated with hydrofluoric acid etching showed high bond strength with a less time consuming and technique-sensitive procedure compared to standard procedure.
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Affiliation(s)
- Michele Carrabba
- Department of Medical Biotechnologies, University of Siena, Siena, Italy
| | - Alessandro Vichi
- Department of Medical Biotechnologies, University of Siena, Siena, Italy
| | - Chris Louca
- University of Portsmouth Dental Academy, Portsmouth, United Kingdom
| | - Marco Ferrari
- Department of Medical Biotechnologies, University of Siena, Siena, Italy
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Alakus Sabuncuoglu F, Erturk E. Shear bond strength of brackets bonded to porcelain surface: in vitro study. J Istanb Univ Fac Dent 2016; 50:9-18. [PMID: 28955550 PMCID: PMC5573448 DOI: 10.17096/jiufd.95403] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2015] [Accepted: 11/12/2015] [Indexed: 11/15/2022] Open
Abstract
Purpose: To compare the effects of different porcelain
surface treatment methods on the shear bond strength
(SBS) and fracture mode of orthodontic brackets. Materials and Methods: Seventy feldspathic porcelain disk
samples mounted in acrylic resin blocks were divided into
seven groups (n=10) according to type of surface treatment: I,
Diamond bur; II, Orthosphoric acid (OPA); III, hydrofluoric
acid (HFA); IV, sandblasted with aluminum oxide (SB); V,
SB+HFA; VI, Neodymium:yttrium-aluminum-garnet (Nd:YAG)
laser; VII, Erbium:yttrium-aluminum-garnet (Er:YAG) laser.
Brackets were affixed to treated all-porcelain surfaces with a
silane bonding agent and adhesive resin and subjected to SBS
testing. Specimens were evaluated according to the adhesive
remnant index (ARI), and failure modes were assessed
quantitatively under a stereomicroscope and morphologically
under a scanning electron microscope (SEM). Statistical
analysis was performed using one-way analysis of variance and
the post-hoc Tukey test, with the significance level set at 0.05. Results: The highest SBS values were observed for Group V,
with no significant difference between Groups V and III. SBS
values for Group I were significantly lower than those of all
other groups tested. The porcelain/resin interface was the most
common site of failure in Group V (40%) and Group III (30%),
whereas other groups showed various types of bond failure, with
no specific location pre-dominating, but with some of the adhesive
left on the porcelain surfaces (ARI scores 2 or 3) in most cases. Conclusion: The current findings indicate that a diamond bur alone
is unable to sufficiently etch porcelain surfaces for bracket bonding.
Moreover, SB and HFA etching used in combination results in a
significantly higher shear-bond strength than HFA or SB alone.
Finally, laser etching with either an Nd:YAG or Er:YAG laser was
found to be more effective and less time-consuming than both HFA
acid and SB for the treatment of deglazed feldspathic porcelain.
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Affiliation(s)
| | - Ergul Erturk
- Department of Prosthodontics Center for Dental Sciences Maresal Cakmak Hospital Turkey
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15
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Mohammadi N, Shakur Shahabi M, Kimyai S, Pournagi Azar F, Ebrahimi Chaharom ME. Shear Bond Strengths of Methacrylate- and Silorane-based Composite Resins to Feldspathic Porcelain using Different Adhesive Systems. J Dent Res Dent Clin Dent Prospects 2015; 9:181-7. [PMID: 26697151 PMCID: PMC4682015 DOI: 10.15171/joddd.2015.033] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2014] [Accepted: 08/17/2015] [Indexed: 11/10/2022] Open
Abstract
Background and aims. Use of porcelain as inlays, laminates and metal-ceramic and all-ceramic crowns is common in modern dentistry. The high cost of ceramic restorations, time limitations and difficulty of removing these restorations result in delays in replacing fractured restorations; therefore, their repair is indicated. The aim of the present study was to compare the shear bond strengths of two types of composite resins (methacrylate-based and silorane-based) to porcelain, using three adhesive types. Materials and methods. A total of 156 samples of feldspathic porcelain surfaces were prepared with air-abrasion and randomly divided into 6 groups (n=26). In groups 1-3, Z250 composite resin was used to repair porcelain samples with Ad-per Single Bond 2 (ASB), Clearfil SE Bond (CSB) and Silorane Adhesive (SA) as the bonding systems, afterapplication of silane, respectively. In groups 4-6, the same adhesives were used in the same manner with Filtek Silorane composite resin. Finally, the shear bond strengths of the samples were measured. Two-way ANOVA and post hoc Tukey tests were used to compare bond strengths between the groups with different adhesives at P<0.05. Results. There were significant differences in the mean bond strength values in terms of the adhesive type (P<0.001). In addition, the interactive effect of the adhesive type and composite resin type had no significant effect on bond strength (P=0.602). Conclusion. The results of the present study showed the highest repair bond strength values to porcelain with both composite resin types with the application of SA and ASB.
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Affiliation(s)
- Narmin Mohammadi
- Associate Professor, Department of Restorative Dentistry, Faculty of Dentistry, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Maryam Shakur Shahabi
- Postgraduate Student, Department of Restorative Dentistry, Faculty of Dentistry, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Soodabeh Kimyai
- Professor, Department of Restorative Dentistry, Faculty of Dentistry, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Fatemeh Pournagi Azar
- Associate Professor, Department of Restorative Dentistry, Faculty of Dentistry, Tabriz University of Medical Sciences, Tabriz, Iran
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16
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Goymen M, Topcuoglu T, Topcuoglu S, Akin H. Effect of different temporary crown materials and surface roughening methods on the shear bond strengths of orthodontic brackets. Photomed Laser Surg 2015; 33:55-60. [PMID: 25599122 DOI: 10.1089/pho.2014.3818] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
OBJECTIVE The aim of this study was to evaluate the effect of different temporary crown materials (TCMs) and surface roughening methods on the shear bond strength (SBS) of orthodontic brackets. BACKGROUND DATA TCMs are widely used during orthodontic treatment in teeth in need of prosthetic treatment, to prevent damage to the final restoration. However, there is no consensus considering the best method for roughening of the surface of TCMs. METHODS Five different TCMs [Dentalon Plus-(D), Basworth Trim II-(B), Voco Structure Premium-(V), 3M ESPE Protempt 4-(P), and Revotek LC-(R)] were used in this study. Different surface roughening methods (37% phosphoric acid, sandblasting, and Er:YAG laser) were employed in three subgroups (n=20). The SBS test was used to assess the durability of all groups. Scanning electron microscopy (SEM) analysis was performed on a representative specimen in each group. RESULTS The highest mean SBS value was observed in group V, followed by groups D and P, regardless of the surface treatment. The lowest SBS values were observed in group B. The laser-irradiated groups had higher SBS values than the sandblasted and acid-etched groups. Furthermore, a significant difference in SBS values was observed between the laser-irradiated group V and all other groups (p<0.005). CONCLUSIONS The effects of the chemical nature of TCMs on the SBS values appeared to be clinically negligible, whereas the type of surface treatments had a significant influence on bond strengths. Er:YAG laser irradiation caused a significant increase in bond strength between the TCMs and orthodontic brackets.
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Affiliation(s)
- Merve Goymen
- 1 Department of Orthodontics, Faculty of Dentistry, Gaziantep University , Gaziantep, Turkey
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17
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ELSAKA SE. Repair bond strength of resin composite to a novel CAD/CAM hybrid ceramic using different repair systems. Dent Mater J 2015; 34:161-7. [DOI: 10.4012/dmj.2014-159] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Affiliation(s)
- Shaymaa E. ELSAKA
- Department of Restorative Dental Sciences, Al-Farabi College of Dentistry and Nursing
- Department of Dental Biomaterials, Faculty of Dentistry, Mansoura University
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18
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Mohamed FF, Finkelman M, Zandparsa R, Hirayama H, Kugel G. Effects of Surface Treatments and Cement Types on the Bond Strength of Porcelain-to-Porcelain Repair. J Prosthodont 2014; 23:618-25. [DOI: 10.1111/jopr.12194] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/07/2014] [Indexed: 11/30/2022] Open
Affiliation(s)
- Fatma Faiez Mohamed
- Department of Oral Health Sciences; School of Dentistry; University of Michigan; Ann Arbor MI
| | - Matthew Finkelman
- Department of Public Health and Community Service; Tufts University School of Dental Medicine; Boston MA
| | - Roya Zandparsa
- Department of Prosthodontics and Operative Dentistry; Tufts University School of Dental Medicine; Boston MA
| | - Hiroshi Hirayama
- Department of Prosthodontics and Operative Dentistry; Tufts University School of Dental Medicine; Boston MA
| | - Gerard Kugel
- Department of Prosthodontics and Operative Dentistry; Tufts University School of Dental Medicine; Boston MA
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19
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Repair of restorations – Criteria for decision making and clinical recommendations. Dent Mater 2013; 29:28-50. [DOI: 10.1016/j.dental.2012.07.006] [Citation(s) in RCA: 149] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2012] [Revised: 07/09/2012] [Accepted: 07/17/2012] [Indexed: 11/18/2022]
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20
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Pedrazzi H, Takeuchi CYG, Cioffi SS, Galvão MR, De Andrade MF, Bezzon OL. Shear bond strength of repairs in porcelain conditioned with laser. Microsc Res Tech 2012; 75:1639-45. [DOI: 10.1002/jemt.22109] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2012] [Revised: 06/14/2012] [Accepted: 06/28/2012] [Indexed: 11/11/2022]
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Blum IR, Nikolinakos N, Lynch CD, Wilson NHF, Millar BJ, Jagger DC. An in vitro comparison of four intra-oral ceramic repair systems. J Dent 2012; 40:906-12. [PMID: 22819811 DOI: 10.1016/j.jdent.2012.07.008] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2012] [Revised: 07/09/2012] [Accepted: 07/10/2012] [Indexed: 11/16/2022] Open
Abstract
OBJECTIVES This study evaluated the effect of different surface conditioning methods on the tensile bond strength (TBS) and integrity of the leucite-reinforced glass ceramic (Cerana(®) inserts)-resin composite interface, using four commercially available ceramic repair systems. METHODS Two hundred extra-large Cerana(®) inserts were mechanically treated and stored in artificial saliva for 3 weeks and subsequently randomly assigned to one of the following ceramic repair systems (n=40/group): Group 1, Ceramic Repair(®) (Ivoclar Vivadent, Liechtenstein); Group 2, Cimara(®) (Voco, Germany); Group 3, Clearfil Repair(®) (Kuraray, Japan); Group 4, CoJet system(®) (3M ESPE, Germany); and Group 5, no surface conditioning and no adhesive system applied: the control group. Subsequently, resin composite material was added to the substrate surfaces and the ceramic-resin composite specimens were subjected to TBS testing. Representative samples from the test groups were subjected to scanning electron microscopy (SEM) to determine the mode of failure. The data were analysed statistically using a one-way multivariate analysis of variance and Kruskal-Wallis test at a 95% confidence interval level. RESULTS Surface conditioning with the CoJet(®) system resulted in significantly higher bond strength values (5.2 ± 1.1 MPa) than surface conditioning with the other repair systems (p=0.03). The SEM examination of the failed interfaces revealed that all the specimens examined failed adhesively. SIGNIFICANCE Whilst highest bond strength values were observed with the CoJet(®) system all tested repair systems resulted in relatively weak TBS values and, as a consequence, these repair systems may be indicated only as interim measures.
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Affiliation(s)
- Igor R Blum
- University of Bristol Dental Hospital & School, Lower Maudlin Street, Bristol BS1 2LY, United Kingdom.
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22
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Blum IR, Jagger DC, Wilson NHF. Defective dental restorations: to repair or not to repair? part 2: all–ceramics and porcelain fused to metal systems. ACTA ACUST UNITED AC 2011; 38:150-2, 154-6, 158. [DOI: 10.12968/denu.2011.38.3.150] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Igor R Blum
- PGCertHE Clinical Lecturer/Hon. Specialist Registrar in Restorative Dentistry, University of Bristol Dental Hospital and School at Guys', King's College and St Thomas' Hospitals
| | - Daryll C Jagger
- Professor of Restorative Dentistry, Glasgow Dental School and Hospital at Guys', King's College and St Thomas' Hospitals
| | - Nairn H F Wilson
- Professor of Restorative Dentistry and Dean and Head of King's College London Dental Institute at Guys', King's College and St Thomas' Hospitals
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Meng XF, Yoshida K, Gu N. Chemical adhesion rather than mechanical retention enhances resin bond durability of a dental glass-ceramic with leucite crystallites. Biomed Mater 2010; 5:044101. [DOI: 10.1088/1748-6041/5/4/044101] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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24
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Akyıl MŞ, Yilmaz A, Karaalioğlu OF, Duymuş ZY. Shear Bond Strength of Repair Composite Resin to an Acid-Etched and a Laser-Irradiated Feldspathic Ceramic Surface. Photomed Laser Surg 2010; 28:539-45. [DOI: 10.1089/pho.2009.2586] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Musa Şamil Akyıl
- Department of Prosthodontics, School of Dentistry, University of Atatürk, Erzurum, Turkey
| | - Asude Yilmaz
- Department of Prosthodontics, School of Dentistry, University of Atatürk, Erzurum, Turkey
| | - Osman F. Karaalioğlu
- Department of Prosthodontics, School of Dentistry, University of Atatürk, Erzurum, Turkey
| | - Zeynep Y. Duymuş
- Department of Prosthodontics, School of Dentistry, University of Atatürk, Erzurum, Turkey
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25
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Güler AU, Sarikaya IB, Güler E, Yücel AC. Effect of filler ratio in adhesive systems on the shear bond strength of resin composite to porcelains. Oper Dent 2009; 34:299-305. [PMID: 19544819 DOI: 10.2341/08-88] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
This in vitro study evaluated the effect of six different adhesive systems on the shear bond strength of resin composite to feldspathic and low-fusing porcelains. Sixty porcelain blocks were prepared for each low-fusing (Matchmaker) and feldspathic (MVK95) porcelain specimen. After surface preparation, the porcelain specimens were divided into six groups (n = 10) for different adhesive systems (Adper Prompt L-Pop, QuadrantUnil Bond, Te-Econom, PQ1, One-StepPlus and Prime&Bond NT). After adhesive application, a universal resin composite (FiltekZ250) was condensed on the specimens. The prepared specimens were then stored in distilled water at 37 degrees C for 24 hours, then all the samples were thermal cycled 1000 times between 5 degrees C and 55 degrees C. Shear testing was performed on a universal test machine using a crosshead speed of 0.5 mm/minute. The statistical analysis of the bond strength data included two-way ANOVA. Then, the means were compared by Tukey HSD test (alpha = 0.05). The lowest bond strength was observed in Adper Prompt L-Pop. No statistically significant difference was observed between One-Step Plus and Prime&Bond NT. The highest bond strength was observed in PQ1. When low-fusing or feldspathic porcelain restorations are repaired with resin composite, self-etching adhesive systems may not be indicated. If maximum bond strength is the goal in porcelain resin bonding, adhesive systems that have a high filler ratio should be used.
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Affiliation(s)
- Ahmet Umut Güler
- Department of Prosthodontics, Faculty of Dentistry, Ondokuz Mayis University, Samsun, Turkey.
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Reston EG, Filho SC, Arossi G, Cogo RB, Rocha CS, Closs LQ. Repairing Ceramic Restorations: Final Solution or Alternative Procedure? Oper Dent 2008; 33:461-6. [DOI: 10.2341/07-151] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
PURPOSE
This article provides an overview of dental ceramics. It addresses possible modes of failure and factors that may influence the decision to either repair or replace ceramic restorations. The authors' intention was to present ceramic repair as a reliable, low-cost, low-risk technique.
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Ciftçi Y, Canay S, Hersek N. Shear Bond Strength Evaluation of Different Veneering Systems on Ni-Cr Alloys. J Prosthodont 2007; 16:31-6. [PMID: 17244305 DOI: 10.1111/j.1532-849x.2006.00148.x] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Abstract
PURPOSE The aim of this study was to evaluate the shear bond strength of four esthetic veneering materials on nickel-chromium (Ni-Cr) alloy. MATERIALS AND METHODS Forty square patterns (10 x 10 x 1.5 mm) were cast with Ni-Cr, divided equally into four groups, and received four treatments for veneering: conventional porcelain-fused-to-metal (PFM), Artglass, Targis/Vectris, and Biodent light-cured prosthodontic composite resins. After sandblasting of the cast metal surfaces with 50 micro m alumina, the composites were applied to the surfaces according to manufacturers' recommendations. Shear bond strength was determined at a crosshead speed of 0.5 mm/min. Results were analyzed statistically with Kruskal-Wallis analysis of variance and multiple comparison tests. RESULTS Mean shear bond strength values were 34.96 MPa for PFM, 14.17 MPa for Targis/Vectris, 13.64 MPa for Artglass, and 10.56 MPa for Biodent. The PFM group exhibited significantly higher bond strength values compared with the other three groups (p < 0.001). CONCLUSION PFM showed considerably higher shear bond strength values than the three metal-resin bonding techniques.
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Affiliation(s)
- Yalçin Ciftçi
- Department of Prosthodontics, Faculty of Dentistry, University of Hacettepe, Ankara, Turkey.
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