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Elraggal A, Silikas N. Effect of Air-Abraded Versus Laser-Fused Fluorapatite Glass-Ceramics on Shear Bond Strength of Repair Materials to Zirconia. MATERIALS 2021; 14:ma14061468. [PMID: 33802778 PMCID: PMC8002453 DOI: 10.3390/ma14061468] [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: 02/07/2021] [Revised: 03/08/2021] [Accepted: 03/15/2021] [Indexed: 11/16/2022]
Abstract
Zirconia repair could be a feasible alternative option to total replacement in fractured zirconia-based restorations. Maximising the bond strength by enriching zirconia with fluorapatite glass-ceramics (FGC) powder has been addressed and compared to other surface treatments. Besides resin composite, other repair materials have been proposed and compared. Zirconia blocks received different surface treatments (A-sandblasting with tribochemical silica-coated alumina (CoJet). B-sandblasting with FGC powder (FGC), C-fluorapatite glass-ceramic coat+ neodymium-doped yttrium aluminum garnet laser irradiation (FGC + Nd: YAG), and D-no surface treatment). The surface roughness, topography, and crystallinity were investigated by a profilometer, scanning electron microscopy (SEM), and X-ray diffraction (XRD) analyses, respectively. For each surface treatment, three repair materials (feldspathic porcelain, lithium disilicate, and resin composite) were bonded to zirconia with 10, Methacryloyloxydecyl dihydrogen phosphate (MDP)-Monobond Plus/ Multilink Automix. Bonded specimens were thermocycled for 10,000 cycles and tested for shear bond strength (SBS) at a speed of 1 mm/min, followed by the analysis of the mode of failure. FGC + Nd: YAG laser group reported the highest surface roughness and monoclinic content compared to CoJet, FGC, and control groups. The highest mean SBS was found in FGC-blasted zirconia, followed by FGC + Nd: YAG laser and CoJet treated groups. However, the lowest SBS was found in control groups regardless of the repair material. Sandblasting zirconia with FGC powder increased SBS of resin to zirconia with lower monoclinic phase transformation compared to FGC + Nd: YAG or CoJet groups.
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Affiliation(s)
- Alaaeldin Elraggal
- Division of Dentistry, School of Medical Sciences, Faculty of Biology, Medicine and Health, The University of Manchester, Manchester M13 9PL, UK;
- Conservative Dentistry Department, Faculty of Dentistry, Alexandria University, Alexandria 21568, Egypt
- Correspondence: ; Tel.: +20-1145096263
| | - Nikolaos Silikas
- Division of Dentistry, School of Medical Sciences, Faculty of Biology, Medicine and Health, The University of Manchester, Manchester M13 9PL, UK;
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Ghoveizi R, Parsirad R, Tavakolizadeh S, Beyabanaki E. Effect of Different Nd:YAG Laser Power Outputs on Bond Strength of Resin Cement to Zirconia in Comparison to Sandblasting. J Lasers Med Sci 2021; 12:e6. [PMID: 34084732 DOI: 10.34172/jlms.2021.06] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Introduction: This study investigated the effect of various laser powers on the shear bond strength (SBS) of resin cement to the zirconia surface. Methods: Seventy-five zirconia disks were prepared and assigned to five groups including no surface treatment (control group), sandblasting with 50 µ Al2 O3 particles (second group), and Nd:YAG laser treatments with 2 W, 2.5 W and 3 W powers respectively (third, fourth and fifth groups). Afterwards, composite resin cylinders were cemented on zirconia disks using dual-curing resin cement. Before thermocycling (2000 cycles, 5-55°C), all samples were placed in distilled water at 37°C for 24 hours. Using a universal testing machine at the crosshead speed of 0.5 mm/min, the SBS was examined. Also, using a stereomicroscope, the failure type was determined. Data analyses were performed using Welch and Games-Howell tests (P < 0.05). Results: The mean bond strength difference between the control group and the other groups was significant. The respective bond strength from the highest to the lowest was observed in the sandblast group, the laser group with 2.5 W power, the laser group with 3 W power, the laser group with 2 W power, and finally the control group. However, no significant difference was observed between different laser groups (P < 0.05). Also, there was no significant difference between the sandblast and laser groups with 2.5 W and 3 W power (P < 0.05). Most of the failures in the sandblasting and laser groups with powers of 2.5 W and 3 W were mixed, but in the control and 2 W laser groups, most of the failures were of adhesive nature. Conclusion: The highest bond strength was achieved by sandblasting with Al2 O3 particles and then using an Nd: YAG laser with a power of 2.5 W.
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Affiliation(s)
- Rahab Ghoveizi
- Assistant Professor, Department of Prosthodontics, School of Dentistry, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Rozbeh Parsirad
- Graduate student, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Sara Tavakolizadeh
- Assistant Professor, Department of Prosthodontics, School of Dentistry, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Elaheh Beyabanaki
- Assistant Professor, Department of Prosthodontics, School of Dentistry, Shahid Beheshti University of Medical Sciences, Tehran, Iran
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Shirani F, Kianipour A, Rahbar M. The Effect of Mechanical and Chemical Surface Preparation Methods on the Bond Strength in Repairing the Surface of Metal-Ceramic Crowns with Composite Resin: a Systematic Review and Meta-Analysis. MAEDICA 2020; 15:206-223. [PMID: 32952686 PMCID: PMC7482688 DOI: 10.26574/maedica.2020.15.2.206] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
The aim of this study was to find the most effective surface preparation methods to enhance the bond strength between the composite resin and surface remaining from ceramic fracture. In this systematic review and meta-analysis, 39 studies were examined. The information related to the studies was extracted and categorized based on the type of the substrate material and applying or not applying thermal cycles (p<0.05). In the meta-analysis of substrate metal-ceramic samples without aging, application of air abrasion resulted in a significant increase of the bond strength to composite resin when using chemical compounds of the group without the mentioned functional monomers. Application of mechanical and chemical surface preparation methods can result in enhanced bond strength of the composite to the substrate material, which depends on the type of substrate material.
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Affiliation(s)
- Farzaneh Shirani
- Dental Material Research Center, Department of Operative Dentistry, School of Dentistry, Isfahan University of Medical Sciences, Isfahan, Iran, Orcide id: 0000-0001-9837-9642
| | - Azadeh Kianipour
- Department of Operative Dentistry, School of Dentistry, Kermanshah University of Medical Sciences, Kermanshah, Iran, Orcide id: 0000-0002-0151-9256
| | - Mahdi Rahbar
- Department of Operative and Esthetic Dentistry, Dental School, Ardabil University of Medical Sciences, Ardabil, Iran, Orcide id: 0000-0002-9049-8169
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Raeisosadat F, Ghoveizi R, Eskandarion S, Beyabanaki E, Tavakolizadeh S. Influence of Different Surface Treatments on the Shear Bond Strength of Resin Cement to Base Metal Alloys. J Lasers Med Sci 2020; 11:45-49. [PMID: 32099626 DOI: 10.15171/jlms.2020.08] [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: 11/09/2022]
Abstract
Introduction: This study aimed to investigate the effect of different surface treatments on the bond strength of resin cement to nickel-chrome (Ni-Cr) alloy. Methods: Forty disk-shaped specimens of Ni-Cr alloy were prepared and divided into 4 groups. In the first group, the specimens' surface was sandblasted with 50 µ Al2 O3 particles. In the second group, the specimens were prepared with the Er:YAG laser. In the third group, the specimens were prepared using the Er:YAG laser after sandblasting. In the fourth group, the specimens' surface was covered with a thin layer of MKZ metal primer after sandblasting. Then the cylinders of composite resin were bonded to the treated metal surfaces using Panavia F2.0 resin cement. All of the samples were subjected to 2000 thermal cycles. The shear bond strength was tested using a universal testing machine at the crosshead speed of 0.5 mm/min. The failure mode was also observed by a stereomicroscope. Data were analyzed using the one-way ANOVA and the Tukey HSD test at a significance level of 0.05. Results: The shear bond strength from the highest to the lowest were as follows: the Er:YAG laser group, the sandblast and MKZ primer combination group, the sandblast group, and the sandblast and Er:YAG laser combination group. The mean differences of shear bond strength between the Er:YAG laser group and the sandblast group (P=0.047) and also between the Er:YAG laser group and the sandblast and Er:YAG laser combination group (P=0.015) were statistically significant. Conclusion: Among the different surface treatments employed in this study, Er:YAG laser treatment increased the shear bond strength between the metal alloy and the resin cement (Pavnavia F2).
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Affiliation(s)
- Farkhondeh Raeisosadat
- Department of Operative Dentistry, School of Dentistry, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Rahab Ghoveizi
- Department of Prosthodontics, School of Dentistry, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Solmaz Eskandarion
- Dental Material Research Center, Tehran Medical Sciences, Islamic Azad university, Tehran, Iran
| | - Elaheh Beyabanaki
- Department of Prosthodontics, School of Dentistry, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Sara Tavakolizadeh
- Department of Prosthodontics, School of Dentistry, Shahid Beheshti University of Medical Sciences, Tehran, Iran
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Nakhaei M, Fendereski Z, Alavi S, Mohammadipour HS. The Micro-Shear bond strength of different cements to commercially pure titanium. J Clin Exp Dent 2019; 11:e820-e828. [PMID: 31636875 PMCID: PMC6797445 DOI: 10.4317/jced.56022] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2019] [Accepted: 07/24/2019] [Indexed: 11/05/2022] Open
Abstract
Background The most appropriate luting agent for attaching the prefabricated Ti-based insert of hybrid abutments to its ceramic component has not yet been determined. This study was done aimed at examining the micro-shear bond strength (μSBS) of different cements to commercially pure titanium (Cp Ti). Material and Methods A total of 100 milled cubes of Cp Ti was airborne-particle abraded using 250 μm aluminum oxide particles. Specimens were then divided into 5 groups (n=20) according to the type of resin cement used: (1) Panavia F.2, (2) Rely X U200, (3) Panavia SA LUTING Plus, (4) GC Fuji I, and (5) GC FujiCEM 2. After 24h storage, half of the samples were subjected to 5000 cycles of thermal aging. Next, the bonded samples were tested in the micro-shear mode. Data (MPa) were analyzed using a two-way ANOVA and the post hoc Tukey test (α=0.05). After debonding, each sample was examined for the failure mode classification. Results The highest μSBS value in the study cements was obtained for Panavia F.2 cement (P<0.001) with no significant difference with Rely X U200 (P=0.07). The μSBS values of both GI-based cements were significantly lower than those of resin cements. Thermal aging decreased the μSBS values of all groups (P=0.003) significantly. The mainly occurred failure mode in all groups was the adhesive feature. Conclusions Resin cements demonstrated acceptable bonding to Cp Ti, yet Gl-based cements did not. From among the cements examined, Panavia F.2 can be considered as the best option for bonding to Ti. Key words:Bond strength, Glass ionomer, Hybride abutment, Resin cement, Titanium.
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Affiliation(s)
- Mohammadreza Nakhaei
- Associate Professor of Prosthodontics, Dental Materials Research Center, Mashhad University of Medical Sciences, Mashhad, Iran. Department of Prosthodontics, School of Dentistry, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Zeinab Fendereski
- Dental Student, School of Dentistry, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Samin Alavi
- Assistant Professor of Restorative Dentistry, Department of Cosmetic and Restorative Dentistry, School of Dentistry, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Hamideh-Sadat Mohammadipour
- Assistant Professor of Restorative Dentistry, Dental Research Center, Mashhad University of Medical Sciences, Mashhad, Iran. Department of Cosmetic and Restorative Dentistry, School of Dentistry, Mashhad University of Medical Sciences, Mashhad, Iran
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Korkmaz FM, Aycan S. Effect of Fiber Laser Irradiation on the Shear Bond Strength between Acrylic Resin and Titanium. SCANNING 2019; 2019:5452919. [PMID: 31531156 PMCID: PMC6745174 DOI: 10.1155/2019/5452919] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/15/2019] [Accepted: 08/16/2019] [Indexed: 06/10/2023]
Abstract
OBJECTIVES The aim of this study is to investigate the shear bond strength of an acrylic resin to titanium after different surface treatment methods. MATERIAL AND METHODS A total of seventy-two disc-shaped specimens (10 mm × 10 mm × 2 mm) were prepared from titanium alloy. The specimens were randomly allocated to six equal groups: Group S (sandblasting), Group MP (metal primer), Group 10W (fiber laser 10 W), Group 20W (fiber laser 20 W), Group 10WMP (fiber laser 10 W+metal primer), and Group 20WMP (fiber laser 20 W+metal primer). All of the specimens were thermocycled up to 5000 cycles. After thermal cycling, a shear bond strength test was conducted. The shear bond strength data were analyzed with one-way ANOVA and Tukey's post hoc pairwise comparisons (p < 0.05). RESULTS While the highest values were determined in Group MP, the lowest values were observed in Group S. Additionally, Group MP exhibited significantly higher shear bond strength values than any of the other groups (p < 0.05) except Group 10WMP. Similar results were observed between Group MP and Group 10WMP (p > 0.05). The groups in which a metal primer was applied (Group MP, 10WMP, and 20WMP) showed significantly higher values than Group S. The shear bond strength values of Group 10W and Group 20W were similar. CONCLUSIONS The application of a metal primer significantly improved the bond strength of acrylic resin to titanium. Fiber laser application may be an alternative method to sandblasting for improving the bond strength of acrylic resin to titanium.
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Affiliation(s)
- Fatih Mehmet Korkmaz
- Department of Prosthodontics, Faculty of Dentistry, Karadeniz Technical University, 61080 Trabzon, Turkey
| | - Selin Aycan
- Department of Prosthodontics, Faculty of Dentistry, Karadeniz Technical University, 61080 Trabzon, Turkey
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Sayin Ozel G, Okutan Y, Oguz Ahmet BS, Ozdere E. Effect of Combined Surface Treatments on Surface Roughness and Resin Bond Strength to Y-TZP Ceramic and Nickel–Chromium Metal Alloy. PHOTOBIOMODULATION PHOTOMEDICINE AND LASER SURGERY 2019; 37:442-450. [DOI: 10.1089/photob.2018.4590] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Affiliation(s)
- Gulsum Sayin Ozel
- Department of Prosthodontics, School of Dentistry, Istanbul Medipol University, Istanbul, Turkey
| | - Yener Okutan
- Department of Prosthodontics, Faculty of Dentistry, Adnan Menderes University, Aydin, Turkey
| | - Bebek Serra Oguz Ahmet
- Department of Prosthodontics, School of Dentistry, Istanbul Medipol University, Istanbul, Turkey
| | - Eda Ozdere
- Department of Prosthodontics, Ankara Acıbadem Hospital, Ankara, Turkey
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8
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Mirhashemi A, Sharifi N, Moharrami M, Chiniforush N. Evaluation of Different Types of Lasers in Surface Conditioning of Porcelains: A Review Article. J Lasers Med Sci 2017; 8:101-111. [PMID: 29123628 DOI: 10.15171/jlms.2017.19] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
To achieve proper bond strength for porcelains, adequate surface roughness is essential, which is traditionally gained by sandblasting or acid etching with hydrofluoric (HF) acid. Nowadays with the development of laser systems, serious efforts were made to apply this new instrument for surface etching of porcelains due to easy usage, safety, and more efficiency. There are different kinds of lasers and porcelains, so choosing the ones which will be good match for each other is crucial. Besides that, changing the irradiation setting can be beneficial as well. This article reviewed 33 related studies and summarized results of etching accomplished by Nd:YAG, Er:YAG, Er,Cr:YSGG and CO2 lasers on different types of porcelains considering different laser settings and evaluation methods to bring a comprehensive insight.
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Affiliation(s)
- Amirhossin Mirhashemi
- Department of Orthodontics, School of Dentistry, Tehran University of Medical Sciences, Tehran, Iran
| | - Nastaran Sharifi
- School of Dentistry, Tehran University of Medical Sciences, Tehran, Iran
| | - Mohammad Moharrami
- School of Dentistry, Tehran University of Medical Sciences, Tehran, Iran
| | - Nasim Chiniforush
- Laser Research Center of Dentistry, Dentistry Research Institute, Tehran University of Medical Sciences, Tehran, Iran
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9
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Kuwada-Kusunose T, Kusunose A, Wakami M, Takebayashi C, Goto H, Aida M, Sakai T, Nakao K, Nogami K, Inagaki M, Hayakawa K, Suzuki K, Sakae T. Evaluation of irradiation effects of near-infrared free-electron-laser of silver alloy for dental application. Lasers Med Sci 2017; 32:1349-1355. [PMID: 28616700 DOI: 10.1007/s10103-017-2251-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2015] [Accepted: 06/04/2017] [Indexed: 11/28/2022]
Abstract
In the application of lasers in dentistry, there is a delicate balance between the benefits gained from laser treatment and the heat-related damage arising from laser irradiation. Hence, it is necessary to understand the different processes associated with the irradiation of lasers on dental materials. To obtain insight for the development of a safe and general-purpose laser for dentistry, the present study examines the physical effects associated with the irradiation of a near-infrared free-electron laser (FEL) on the surface of a commonly used silver dental alloy. The irradiation experiments using a 2900-nm FEL confirmed the formation of a pit in the dental alloy. The pit was formed with one macro-pulse of FEL irradiation, therefore, suggesting the possibility of efficient material processing with an FEL. Additionally, there was only a slight increase in the silver alloy temperature (less than 0.9 °C) despite the long duration of FEL irradiation, thus inferring that fixed prostheses in the oral cavity can be processed by FEL without thermal damage to the surrounding tissue. These results indicate that dental hard tissues and dental materials in the oral cavity can be safely and efficiently processed by the irradiation of a laser, which has the high repetition rate of a femtosecond laser pulse with a wavelength around 2900 nm.
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Affiliation(s)
- Takao Kuwada-Kusunose
- Department of Liberal Arts (Biology), Nihon University School of Dentistry at Matsudo, 2-870-1, Sakaecho-Nishi, Matsudo, Chiba, 271-8587, Japan.
| | - Alisa Kusunose
- Department of Crown Bridge Prosthodontics, Nihon University School of Dentistry at Matsudo, 2-870-1, Sakaecho-Nishi, Matsudo, Chiba, 271-8587, Japan
| | - Masanobu Wakami
- Department of Crown Bridge Prosthodontics, Nihon University School of Dentistry at Matsudo, 2-870-1, Sakaecho-Nishi, Matsudo, Chiba, 271-8587, Japan
| | - Chikako Takebayashi
- Department of Crown Bridge Prosthodontics, Nihon University School of Dentistry at Matsudo, 2-870-1, Sakaecho-Nishi, Matsudo, Chiba, 271-8587, Japan
| | - Haruhiko Goto
- Department of Crown Bridge Prosthodontics, Nihon University School of Dentistry at Matsudo, 2-870-1, Sakaecho-Nishi, Matsudo, Chiba, 271-8587, Japan
| | - Masahiro Aida
- Department of Crown Bridge Prosthodontics, Nihon University School of Dentistry at Matsudo, 2-870-1, Sakaecho-Nishi, Matsudo, Chiba, 271-8587, Japan
| | - Takeshi Sakai
- Laboratory for Electron Beam Research and Application, Nihon University, 7-24-1, Narashinodai, Funabashi, Chiba, 274-8501, Japan
| | - Keisuke Nakao
- Laboratory for Electron Beam Research and Application, Nihon University, 7-24-1, Narashinodai, Funabashi, Chiba, 274-8501, Japan.,Cyber Defense Institute, Inc., Yaesu Center Building 4F, 1-6-6, Yaesu, Chuo-ku, Tokyo, 103-0028, Japan
| | - Kyoko Nogami
- Laboratory for Electron Beam Research and Application, Nihon University, 7-24-1, Narashinodai, Funabashi, Chiba, 274-8501, Japan
| | - Manabu Inagaki
- Laboratory for Electron Beam Research and Application, Nihon University, 7-24-1, Narashinodai, Funabashi, Chiba, 274-8501, Japan.,Euro Meditech Co., Ltd., Crystal Building 401, 1-15-7, Tenjinbashi, Kita-ku, Osaka, 530-0041, Japan
| | - Ken Hayakawa
- Laboratory for Electron Beam Research and Application, Nihon University, 7-24-1, Narashinodai, Funabashi, Chiba, 274-8501, Japan
| | - Kunihiro Suzuki
- Department of Liberal Arts (Biology), Nihon University School of Dentistry at Matsudo, 2-870-1, Sakaecho-Nishi, Matsudo, Chiba, 271-8587, Japan
| | - Toshiro Sakae
- Department of Histology, Nihon University School of Dentistry at Matsudo, 2-870-1, Sakaecho-Nishi, Matsudo, Chiba, 271-8587, Japan
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Gorler O, Saygin AG. Comparative Evaluation of Effects of Laser Modalities on Shear Bond Strengths of Veneering Porcelains to Laser Sintered Substructures: An In Vitro Study. Photomed Laser Surg 2017; 35:338-344. [PMID: 28590838 DOI: 10.1089/pho.2017.4299] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
OBJECTIVE Laser modalities and direct metal laser sintering (DMLS) have a potential to enhance micromechanical bonding between dental super- and infrastructures. However, the effect of different manufacturing methods on the metal-ceramic bond strength needs further evaluation. We investigated the effect of surface treatment with Er:YAG, Nd:YAG, and Ho:YAG lasers on the shear bond strength (SBS) of high-fusion dental porcelains (Vita and G-Ceram) to infrastructures prepared with DMLS in vitro settings. MATERIALS AND METHODS Study specimens (n = 128) were randomly divided into study subsets (n = 8), considering treatment types applied on the surface of infrastructures, including sandblasting and selected laser modalities; infrastructure types as direct laser sintered (DLS) and Ni-Cr based; and superstructure porcelains as Vita and G-Ceram. The SBS test was performed to assess the effectiveness of surface modifications that were also examined with a stereo microscope. RESULTS Considering laser procedure types, the highest SBS values were obtained by Er:YAG laser, followed by, with a decreasing efficiency, Ho:YAG laser and sandblasting procedures, and Nd:YAG laser procedure (p < 0.05). Nd:YAG laser decreases the bonding of Vita and G-Ceram in all the infrastructures compared with sandblasting. Considering porcelains, the highest SBS values were obtained by Vita (p < 0.05). Considering infrastructures, the highest SBS values were obtained by DMLS procedure (p < 0.05). The laser procedures caused surface irregularities as revealed by the stereo microscopic examination. CONCLUSIONS In current experimental settings, Er:YAG laser applied to DLS infrastructure veneered with Vita porcelain increases bonding strength more distinctly, and Nd:YAG laser applied to Ni-Cr-based infrastructure veneered with G-Ceram porcelain alters bonding strength unfavorably.
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Affiliation(s)
- Oguzhan Gorler
- Department of Prosthodontics, Cumhuriyet University Faculty of Dentistry , Sivas, Turkey
| | - Aysegul Goze Saygin
- Department of Prosthodontics, Cumhuriyet University Faculty of Dentistry , Sivas, Turkey
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11
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Grover N, Nandlal B. An in vitro evaluation of the effect of sandblasting and laser surface treatment on the shear bond strength of a composite resin to the facial surface of primary anterior stainless steel crowns. J Clin Exp Dent 2015; 7:e119-25. [PMID: 25810822 PMCID: PMC4367998 DOI: 10.4317/jced.51876] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2014] [Accepted: 10/16/2014] [Indexed: 11/05/2022] Open
Abstract
OBJECTIVES The present study was conducted to evaluate the optimal method of enhancing the bond strength of a composite resin to the facial surface of the primary anterior stainless steel crowns using various surface treatments namely Nd: YAG laser surface treatment, sandblasting , alloy primer application and no surface treatment. STUDY DESIGN The study sample consisted of 60 primary anterior stainless steel crowns (UnitekTM size R 4), with 15 samples randomly divided into the 4 study groups, embedded in acrylic blocks. The facial surface of these surface treated crowns was utilized as the bonding surface to which 2.5mm diameter composite resin cylinders were bonded for the evaluation of the shear bond strength. Shear bond strength measurements were made using a universal testing machine utilizing a shearing blade (jig).The mode of failure at composite-metal interface was determined using a Stereomicroscope at 10 X magnification. RESULTS The mean bond strength values obtained for surface treatment of Nd: YAG laser surface treated, Sandblasting ,Alloy Primer and No surface treatments were 17.01±.92 , 13.18 ± .73, 7.46 ± .70 and 7.33 ± .77 MPa respectively. The obtained bond strength values were subjected to a one way ANOVA and a Scheffe's post-hoc comparison test. The results of the present study indicated that Laser surface treatment of the facial surface of the crowns enhanced the bond strength of the composite resin significantly compared to the other groups. CONCLUSIONS Nd: YAG laser surface treatment produced an excellent surface roughness and obtained the highest shear bond strength values suggestive for recommendation as an optimal surface treatment to be used to enhance the resin-metal bond at the interface of the composite resin and the facial surface of primary anterior stainless steel crowns for the purpose of chairside veneering. Key words:Nd: YAG laser treatment, Sandblasting, Primary anterior stainless steel crown, Chairside veneering, Enhancing Resin-Metal Bond, Early childhood caries, Shear bond strength (SBS).
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Affiliation(s)
- Nikhil Grover
- Reader, Department of Pedodontics & Preventive dentistry, School of Dental Sciences, Sharda University, Greater Noida, U.P
| | - Bhojraj Nandlal
- Principal, Professor and Head, Department of Pedodontics and preventive dentistry, JSS Dental College, Mysore, India
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12
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Madani AS, Astaneh PA, Nakhaei M, Bagheri HG, Moosavi H, Alavi S, Najjaran NT. Effectiveness of Silica-Lasing Method on the Bond Strength of Composite Resin Repair to Ni-Cr Alloy. J Prosthodont 2014; 24:225-32. [DOI: 10.1111/jopr.12200] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/18/2014] [Indexed: 11/30/2022] Open
Affiliation(s)
- Azam S. Madani
- Department of Prosthodontics; School of Dentistry; Mashhad University of Medical Sciences; Mashhad Iran
| | - Pedram Ansari Astaneh
- Department of Prosthodontics; Faculty of Dentistry, Hormozgan University of Medical Sciences; Bandar Abbas Iran
| | - Mohammadreza Nakhaei
- Department of Prosthodontics; School of Dentistry; Mashhad University of Medical Sciences; Mashhad Iran
| | - Hossein G. Bagheri
- Department of Dental Materials; School of Dentistry; Tehran University of Medical Sciences; Tehran Iran
| | - Horieh Moosavi
- Dental Material Research Center; School of Dentistry; Mashhad University of Medical Sciences; Mashhad Iran
| | - Samin Alavi
- Department of Restorative Dentistry; School of Dentistry; Mashhad University of Medical Sciences; Mashhad Iran
| | - Niloufar Tayarani Najjaran
- Department of Restorative Dentistry; School of Dentistry; Mashhad University of Medical Sciences; Mashhad Iran
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