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Yazigi C, Alawi S, Wille S, Lehmann F, Kern M. Durability of Resin Bonding to Dental 3Y-TZP Zirconia Using Different Adhesive Systems. MATERIALS (BASEL, SWITZERLAND) 2024; 17:424. [PMID: 38255594 PMCID: PMC10820740 DOI: 10.3390/ma17020424] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/13/2023] [Revised: 12/22/2023] [Accepted: 01/11/2024] [Indexed: 01/24/2024]
Abstract
This laboratory study was conducted to evaluate and compare the resin bond strength of different adhesive resin systems in different combinations and the durability of their bonds with zirconia ceramic. MATERIALS AND METHODS One hundred and twenty-eight specimens were milled from 3Y-TZP zirconia ceramic. The bonding surfaces of all disks were wet polished, steam cleaned, airborne-particle abraded and ultrasonically cleaned in 99% isopropanol. The specimens were randomly divided into four main groups according to the applied resin system; two conventional and two self-adhesive systems were used. Each group was further subdivided into two subgroups; the first was conditioned with the specified primer for conventional luting resins or not conditioned for the self-adhesive systems, whereas the second subgroup of each was conditioned with the same phosphate monomer-containing primer (Alloy Primer). The zirconia specimens were adhesively bonded, using the allocated luting resin, to plexiglass tubes filled with self-curing composite resin (Clearfil FII). Half of the specimens of each subgroup were stored in distilled water at 37 °C for 3 days, whereas the other half were subjected to artificial aging, 150 days of storage and additional thermal cycling. Thereafter, all specimens were subjected to TBS testing using a universal testing machine. Statistical analysis was conducted using two-way ANOVA followed by separate one-way ANOVAs. The Games-Howell post-hoc test was applied for pairwise comparisons. RESULTS All specimens survived storage with thermal cycling. The mean TBS values ranged from a minimum of 43.4 ± 5.0 MPa to a maximum of 66.4 ± 3.5 after 3 days and from a minimum of 13.6 ± 2.5 MPa to a maximum of 50.1 ± 9.4 MPa after 150 days. CONCLUSIONS Artificial aging had a significantly negative effect on all test groups. The chosen adhesive-resin system had a significant effect on the resulting TBS values. The highest TBS values were achieved for the self-adhesive luting resin G-Cem One but were statistically comparable to the results obtained for the dual-cure luting resin G-Cem LinkForce.
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Porto TS, Medeiros da Silva IG, de Freitas Vallerini B, Fernando de Goes M. Different surface treatment strategies on etchable CAD-CAM materials: Part II-Effect on the bond strength. J Prosthet Dent 2023; 130:770-779. [PMID: 35101273 DOI: 10.1016/j.prosdent.2021.10.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2021] [Revised: 10/20/2021] [Accepted: 10/21/2021] [Indexed: 11/23/2022]
Abstract
STATEMENT OF PROBLEM Bonding to recently launched polymer-based computer-aided design and computer-aided manufacturing (CAD-CAM) materials has been challenging. Evidence regarding etching strategies for dual-phase CAD-CAM materials is sparse, but adequate bonding is crucial for the clinical success and longevity of a restoration. PURPOSE The purpose of this 2-part in vitro study was to evaluate and compare the effect of surface treatment strategies on the microshear bond strength and work of adhesion of polymer-based and ceramic materials. In addition, chemical elements present on the surface and the interface morphology after using those strategies were also assessed. MATERIALS AND METHODS Two CAD-CAM polymer and 1 CAD-CAM ceramic materials were selected for this in vitro study. The materials were subjected to different surface treatment strategies, including airborne-particle abrasion and the application of 9% hydrofluoric acid. Specimens were submitted to microshear bond strength before and after thermocycling, and the failure mode was classified. The work of adhesion was calculated based on the water-to-air surface tension of 72.8 mN.m-1 and the Young- Dupré equation. The surfaces were submitted to energy-dispersive X-ray spectroscopy, and the interfaces were analyzed using a scanning electron microscope. Data were subjected to 2-way ANOVA and the Tukey post hoc test (α=.05). RESULTS The highest microshear bond strength means were observed for the polymer-based materials when hydrofluoric acid or airborne-particle abrasion was applied. The 3 materials tested showed a decrease in microshear bond strength after thermocycling, except for applying airborne-particle abrasion to 1 of the polymer-based material tested. The ceramic material tested showed a high microshear bond strength with the application of airborne-particle abrasion and hydrofluoric acid combined. The work of adhesion varied across the materials and presented high means when hydrofluoric acid was used. CONCLUSIONS A combination of airborne-particle abrasion plus hydrofluoric acid should be considered for polymer-based or feldspathic ceramic CAD-CAM materials. In this in vitro study, both etching procedures combined produced higher bonding values for all materials tested.
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Affiliation(s)
- Thiago Soares Porto
- Assistant Professor, Division of Restorative and Prosthetic Dentistry, College of Dentistry, The Ohio State University, Columbus, Ohio.
| | - Italo Guimaraes Medeiros da Silva
- Researcher, Department of Macromolecular Science and Engineering, School of Engineering, Case Western Reserve University, Cleveland, Ohio
| | - Bruna de Freitas Vallerini
- PhD Candidate, Department of Dental Materials and Prosthodontics, Araraquara School of Dentistry, Sao Paulo State University (UNESP), Sao Paulo, Brazil
| | - Mario Fernando de Goes
- Professor, Department of Restorative Dentistry (Dental Materials Area), Piracicaba Dental School, University of Campinas (UNICAMP), Sao Paulo, Brazil
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Darkoue YA, Burgess JO, Lawson N, McLaren E, Lemons JE, Morris GP, Givan DA, Fu CC. Effects of Particle Abrasion Media and Pressure on Flexural Strength and Bond Strength of Zirconia. Oper Dent 2023; 48:59-67. [PMID: 36445958 DOI: 10.2341/20-168-l] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/01/2022] [Indexed: 11/30/2022]
Abstract
OBJECTIVES To compare the effects of particle abrasion medium and pressure on shear bond strength and biaxial flexural strength of three generations of zirconia (Lava Frame, Lava Plus, and Lava Esthetic) with the goal of optimizing the bond to zirconia. METHODS 280 discs (14 mm diameter; 1 mm thickness) of each zirconia were milled and sintered. Specimens of each material were randomly distributed into 14 groups (n=20); half were tested for shear bond strength and half were tested for biaxial flexural strength. The specimens were particle abraded on one surface by 2 different media (50 μm alumina particles or 50 μm glass beads) for 10 seconds at three different pressures (15, 30, and 45 psi or 0.1, 0.2, 0.3 MPa). Untreated specimens served as positive control. A tube (1.50 mm diameter) filled with dual cured resin cement (Panavia SA) was placed onto the surface and light cured. Specimens were stored in water (37°C for 24 hours) and shear bond strength was measured in a universal testing machine (Instron). Biaxial flexural strength of each specimen was measured according to ISO 6872. Shear bond strength and biaxial flexural strength were compared individually with a 2-way analysis of variance (ANOVA) for factors surface treatment and zirconia composition. RESULTS Significant differences were seen between surface treatments (p<0.01), zirconia composition (p<0.01) and their interaction (p<0.01) for both bond strength and flexural strength. With alumina particle abrasion, higher pressure produced higher bonds for Lava Frame and Lava Plus zirconia while the bond of Lava Esthetic declined with increased pressure. Higher pressure (>0.2 MPa or 30 psi) with alumina decreased biaxial flexural strength with Lava Esthetic zirconia. CONCLUSIONS Particle abrasion with alumina produced a significantly better combination of bond strength while maintaining biaxial strength of three zirconia materials than particle abrasion with glass beads. The bond strength also depended upon the pressure of particle abrasion and the generation of zirconia used.
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Affiliation(s)
- Y A Darkoue
- *Yasko A Darkoue, BDS, MS, College of Dentistry, University of Illinois Chicago, Chicago, IL, USA
| | - J O Burgess
- John O Burgess, DDS, MS, Louisiana State University Health Sciences Center, New Orleans, LA, USA
| | - N Lawson
- Nathaniel Lawson, DMD, MA, PhD, University of Alabama, School of Dentistry, Birmingham, AL, USA
| | - E McLaren
- Edward McLaren, DDS, MDC, retired professor, University of California, Los Angeles, School of Dentistry, Los Angeles, CA, USA
| | - J E Lemons
- Jack E Lemons, MS, PhD, University of Alabama, School of Dentistry, Birmingham, AL, USA
| | - G P Morris
- Geoffrey P Morris, MS, University of Alabama, School of Dentistry, Birmingham, AL, USA
| | - D A Givan
- Daniel A Givan, DMD, PhD, University of Alabama, School of Dentistry, Birmingham, AL, USA
| | - C-C Fu
- Chin-Chuan Fu, DDS, MS, University of Alabama, School of Dentistry, Birmingham, AL, USA
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Annual review of selected scientific literature: A report of the Committee on Scientific Investigation of the American Academy of Restorative Dentistry. J Prosthet Dent 2022; 128:248-330. [PMID: 36096911 DOI: 10.1016/j.prosdent.2022.07.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2022] [Revised: 07/15/2022] [Accepted: 07/15/2022] [Indexed: 11/23/2022]
Abstract
The Scientific Investigation Committee of the American Academy of Restorative Dentistry offers this review of the 2021 dental literature in restorative dentistry to inform busy dentists regarding noteworthy scientific and clinical progress over the past year. Each member of the committee brings discipline-specific expertise to coverage of this broad topical area. Specific subject areas addressed, in order of the appearance in this report, include COVID-19 and the dental profession (new); prosthodontics; periodontics, alveolar bone, and peri-implant tissues; implant dentistry; dental materials and therapeutics; occlusion and temporomandibular disorders; sleep-related breathing disorders; oral medicine and oral and maxillofacial surgery; and dental caries and cariology. The authors focused their efforts on reporting information likely to influence daily dental treatment decisions with an emphasis on future trends in dentistry. With the tremendous volume of dentistry and related literature being published daily, this review cannot possibly be comprehensive. Rather, its purpose is to update interested readers and provide important resource material for those interested in pursuing greater details on their own. It remains our intent to assist colleagues in negotiating the extensive volume of important information being published annually. It is our hope that readers find this work useful in successfully managing the patients and dental problems they encounter.
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Cuzic C, Pricop MO, Jivanescu A, Ursoniu S, Negru RM, Romînu M. Assessment of Different Techniques for Adhesive Cementation of All-Ceramic Systems. Medicina (B Aires) 2022; 58:medicina58081006. [PMID: 36013473 PMCID: PMC9416329 DOI: 10.3390/medicina58081006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2022] [Revised: 07/24/2022] [Accepted: 07/26/2022] [Indexed: 11/30/2022] Open
Abstract
Background and Objectives: Modern esthetic dentistry is based on all-ceramic restorations. Dentists still have reservations about using these restorations due to a lack of understanding of the cementation technique, which depends on the type of ceramic used. The aim of the study is to evaluate the approaches and practices of clinicians regarding the adhesive cementation of all-ceramic restorations. Materials and Methods: An online questionnaire regarding the use of all-ceramic restorations and their bonding methods was designed by distinguishing the cementation of oxide and silica-based ceramics. The survey included dentists practicing in Timiș County, Romania. The questionnaire and the evaluation of the answers were designed based on the techniques and evidence from the literature. Results: Considering the work experience, we obtained two groups: group 1—1 to 6 years and group 2—6 to 9+ years. The results revealed significant values when comparing the two groups in the surface protocol and decontamination (p = 0.005), type of cement used (p = 0.002), and isolation techniques (p = 0.002). Conclusions: The results show that many clinicians need additional training to improve their cementing technique and avoid the confusion caused by insufficient information about the interrelationship between the type of ceramic and the cementation procedure.
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Affiliation(s)
- Cristiana Cuzic
- Department of Prosthodontics, Faculty of Dental Medicine, University of Medicine and Pharmacy “Victor Babes”, 300041 Timisoara, Romania;
- Research Center of Digital and Advanced Technique for Endodontic, Restorative and Prosthetic Treatment (TADERP), 300041 Timisoara, Romania
| | - Marius Octavian Pricop
- Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, University of Medicine and Pharmacy “Victor Babes”, 300041 Timisoara, Romania
- Research Center in Dental Medicine Using Conventional and Alternative Technologies, School of Dental Medicine, University of Medicine and Pharmacy “Victor Babes”, 300070 Timisoara, Romania; (R.M.N.); (M.R.)
- Correspondence: (M.O.P.); (A.J.)
| | - Anca Jivanescu
- Department of Prosthodontics, Faculty of Dental Medicine, University of Medicine and Pharmacy “Victor Babes”, 300041 Timisoara, Romania;
- Research Center of Digital and Advanced Technique for Endodontic, Restorative and Prosthetic Treatment (TADERP), 300041 Timisoara, Romania
- Correspondence: (M.O.P.); (A.J.)
| | - Sorin Ursoniu
- Department of Functional Sciences, Discipline of Public Health, Faculty of Medicine, University of Medicine and Pharmacy “Victor Babes”, 300041 Timisoara, Romania;
- Research Center for Translational Research and Systems Medicine, University of Medicine and Pharmacy “Victor Babes”, 300041 Timisoara, Romania
| | - Radu Marcel Negru
- Research Center in Dental Medicine Using Conventional and Alternative Technologies, School of Dental Medicine, University of Medicine and Pharmacy “Victor Babes”, 300070 Timisoara, Romania; (R.M.N.); (M.R.)
- Department of Mechanics and Strength of Materials, Politehnica University, 300222 Timisoara, Romania
| | - Mihai Romînu
- Research Center in Dental Medicine Using Conventional and Alternative Technologies, School of Dental Medicine, University of Medicine and Pharmacy “Victor Babes”, 300070 Timisoara, Romania; (R.M.N.); (M.R.)
- Department of Prosthesis Technology and Dental Materials, Faculty of Dentistry, University of Medicine and Pharmacy “Victor Babes”, 300041 Timisoara, Romania
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Mihali SG, Lolos D, Popa G, Tudor A, Bratu DC. Retrospective Long-Term Clinical Outcome of Feldspathic Ceramic Veneers. MATERIALS 2022; 15:ma15062150. [PMID: 35329602 PMCID: PMC8954582 DOI: 10.3390/ma15062150] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/06/2022] [Revised: 03/07/2022] [Accepted: 03/09/2022] [Indexed: 12/04/2022]
Abstract
The purpose of this study was to evaluate the clinical outcome of feldspathic ceramic laminate veneers over a 7-year period using minimally invasive techniques, such as vertical preparation (without prosthetic finish line), or no preparation (no-prep). A total of 170 feldspathic ceramic veneers were cemented in the anterior region, including 70 maxillary and 100 mandibular veneers, after special conditioning of the teeth and restorations. The veneers were evaluated using the FDI World Dental Federation criteria evaluation kit after recalling all the patients between February and June 2021. In total, 14 feldspathic veneers failed and were replaced with lithium disilicate because of core fracture, and 10 cases of chipping occurred on the ceramic surface and were polished. The overall survival rate was 91.77% for up to 7 years of function, with a failure rate of 8.23%. In this retrospective survival analysis, the failures, including the fracture of veneers and dental hard tissue, occurred both in prep and no-prep teeth. No failures were observed in veneers with a maximum thickness of 0.5 mm compared to those with a maximum thickness of 1 mm, 1.5 mm, 2 mm, and 2.5 mm.
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Affiliation(s)
- Sorin Gheorghe Mihali
- Department of Prosthodontics, Faculty of Dentistry, “Vasile Goldis” Western University of Arad, 94 Revolutiei Blvd., 310025 Arad, Romania;
| | - Dan Lolos
- Department of Prosthodontics, Faculty of Dentistry, “Vasile Goldis” Western University of Arad, 94 Revolutiei Blvd., 310025 Arad, Romania;
- Correspondence: (D.L.); (G.P.)
| | - George Popa
- Department of Orthodontics and Dento-Facial Orthopedics, Orthodontic Research Center, Faculty of Dental Medicine, “Victor Babes” University of Medicine and Pharmacy, 2 Eftimie Murgu Square, 300041 Timisoara, Romania;
- Correspondence: (D.L.); (G.P.)
| | - Anca Tudor
- Medical Informatics and Biostatistics, Research Center in Dental Medicine Using Conventional and Alternative Technologies, Faculty of Dental Medicine, “Victor Babes” University of Medicine and Pharmacy, 9 Revolutiei 1989 Ave., 300070 Timisoara, Romania;
| | - Dana Cristina Bratu
- Department of Orthodontics and Dento-Facial Orthopedics, Orthodontic Research Center, Faculty of Dental Medicine, “Victor Babes” University of Medicine and Pharmacy, 2 Eftimie Murgu Square, 300041 Timisoara, Romania;
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