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Huang B, Chen M, Wang J, Zhang X. Advances in zirconia-based dental materials: Properties, classification, applications, and future prospects. J Dent 2024; 147:105111. [PMID: 38866229 DOI: 10.1016/j.jdent.2024.105111] [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: 03/14/2024] [Revised: 06/04/2024] [Accepted: 06/06/2024] [Indexed: 06/14/2024] Open
Abstract
OBJECTIVES Zirconia (ZrO2) ceramics are widely used in dental restorations due to their superior mechanical properties, durability, and ever-improving translucency. This review aims to explore the properties, classification, applications, and recent advancements of zirconia-based dental materials, highlighting their potential to revolutionize dental restoration techniques. STUDY SELECTION, DATA AND SOURCES The most recent literature available in scientific databases (PubMed and Web of Science) reporting advances of zirconia-based materials within the dental field is thoroughly examined and summarized, covering the major keywords "dental zirconia, classification, aesthetic, LTD, applications, manufacturing, surface treatments". CONCLUSIONS An exhaustive overview of the properties, classifications, and applications of dental zirconia was presented, alongside an exploration of future prospects and potential advances. This review highlighted the importance of addressing challenges such as low-temperature degradation resistance and optimizing the balance between mechanical strength and translucency. Also, innovative approaches to improve the performances of zirconia as dental material was discussed. CLINICAL SIGNIFICANCE This review provides a better understanding of zirconia-based dental biomaterials for dentists, helping them to make better choice when choosing a specific material to fabricate the restorations or to place the implant. Moreover, new generations of zirconia are still expected to make progress on key issues such as the long-term applications in dental materials while maintaining both damage resistance and aesthetic appeal, defining the directions for future research.
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Affiliation(s)
- Bo Huang
- State Key Laboratory of Oral Diseases & National Center for Stomatology & National Clinical Research Center for Oral Diseases & Department of Prosthodontics, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, Sichuan, China
| | - Mengbing Chen
- State Key Laboratory of Oral Diseases & National Center for Stomatology & National Clinical Research Center for Oral Diseases & Department of Prosthodontics, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, Sichuan, China
| | - Jian Wang
- State Key Laboratory of Oral Diseases & National Center for Stomatology & National Clinical Research Center for Oral Diseases & Department of Prosthodontics, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, Sichuan, China.
| | - Xin Zhang
- State Key Laboratory of Oral Diseases & National Center for Stomatology & National Clinical Research Center for Oral Diseases & Department of Prosthodontics, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, Sichuan, China.
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Grymak A, Aarts JM, Cameron AB, Choi JJE. Evaluation of wear resistance and surface properties of additively manufactured restorative dental materials. J Dent 2024; 147:105120. [PMID: 38857647 DOI: 10.1016/j.jdent.2024.105120] [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: 02/22/2024] [Revised: 06/05/2024] [Accepted: 06/07/2024] [Indexed: 06/12/2024] Open
Abstract
OBJECTIVES To evaluate the wear resistance of three additively manufactured dental crown materials (NextDent C&B MFH, Saremco print CROWNTEC and Bego VarseoSmile Crown) under two environmental conditions (dry and artificial saliva), two loads (49 N and 70 N) and two surface treatments (polished and glazed). METHODS A total of 120 specimens were divided into 24 groups and tested for wear under two loads (49 N and 70 N), surface treatment (polished or glazed), and environment (dry or submerged in artificial saliva). All samples underwent reciprocating wear testing at 1 Hz using a wear simulator, replicating 48 months of In Vivo conditions with a stainless-steel ball as the antagonist. The coefficient of friction (CoF), surface roughness, volumetric and vertical wear loss were measured and statistically analysed. Confocal microscopy assessed the surface properties of crown materials and the antagonists. RESULTS The NextDent material demonstrated the most homogenous wear, with relatively low vertical and volumetric loss across all groups (p < 0.004). NextDent and Bego materials performed similarly in artificial saliva regardless of the load type (p > 1.000). The CoF remained below 0.3 for all groups. All groups exhibited significant increases in surface roughness after testing, however, this did not correlate with an increase in the CoF. Confocal analysis revealed material deformities due to load and notable scratch marks on the stainless-steel antagonists. CONCLUSION It was found that all investigated addtively manufactured materials can be suggested for provisional use. Both vertical loss and volumetric loss results should be included for material evaluation. CoF and surface roughness should be implemented into wear evaluation. CLINICAL SIGNIFICANCE This study highlights the practical value of additively manufactured dental crown materials, particularly for provisional restorations. However, their extended use requires careful consideration of individual patient needs, emphasising the need for judicious clinical application evaluation.
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Affiliation(s)
- Anastasiia Grymak
- Faculty of Dentistry, Sir John Walsh Research Institute, University of Otago, PO Box 56, Dunedin 9054, New Zealand.
| | - John M Aarts
- Faculty of Dentistry, Sir John Walsh Research Institute, University of Otago, PO Box 56, Dunedin 9054, New Zealand
| | - Andrew B Cameron
- School of Medicine and Dentistry, Griffith University, Australia; Centre of Biomedical and Rehabilitation Engineering, Menzies Health Institute Queensland, Australia
| | - Joanne Jung Eun Choi
- Faculty of Dentistry, Sir John Walsh Research Institute, University of Otago, PO Box 56, Dunedin 9054, New Zealand
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Pengpue P, Sirimaharaj V, Chaijareenont P, Chinadet W. Tensile bond strength between paediatric prefabricated zirconia crowns and primary maxillary incisors when using various types of luting cements: an in vitro study. Eur Arch Paediatr Dent 2024:10.1007/s40368-024-00890-x. [PMID: 38607545 DOI: 10.1007/s40368-024-00890-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2023] [Accepted: 02/21/2024] [Indexed: 04/13/2024]
Abstract
PURPOSE There is limited evidence regarding the most appropriate type of luting cement for paediatric prefabricated zirconia crowns (PZCs) in primary maxillary incisors. The retention of PZCs is dependent on the bond strength of luting cement between PZCs and primary maxillary incisors. The aim of this study was to evaluate the tensile bond strengths between PZCs and primary maxillary incisors with different types of luting cements. METHODS Thirty freshly extracted human primary maxillary incisors were prepared and randomly divided into three groups corresponding to three luting cements: bioactive cement, resin cement, and resin-modified glass ionomer cement (RMGIC), and then restored with PZCs. Tensile bond strengths were evaluated by a universal testing machine. The results were analysed using one-way ANOVA with Tukey's post-hoc test (p < 0.05). RESULTS The means of the tensile bond strengths were 1.43 ± 0.85 MPa, 0.91 ± 0.63 MPa, and 0.56 ± 0.39 MPa for the bioactive cement, resin cement, and RMGIC groups, respectively. A significant difference in tensile bond strength was observed between the bioactive cement and the RMGIC group (p < 0.05) but there was no significant difference in tensile bond strength between the resin cement group and the others. CONCLUSION Types of luting cement influenced the tensile bond strength between PZCs and primary maxillary incisors. The bioactive cement showed higher tensile bond strength than the resin cement and RMGIC.
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Affiliation(s)
- P Pengpue
- Division of Paediatric Dentistry Department of Orthodontics and Paediatric Dentistry Faculty of Dentistry, Chiang Mai University, Chiang Mai, 50200, Thailand
| | - V Sirimaharaj
- Division of Paediatric Dentistry Department of Orthodontics and Paediatric Dentistry Faculty of Dentistry, Chiang Mai University, Chiang Mai, 50200, Thailand
| | - P Chaijareenont
- Department of Prosthodontic Faculty of Dentistry, Chiang Mai University, Chiang Mai, Thailand
| | - W Chinadet
- Division of Paediatric Dentistry Department of Orthodontics and Paediatric Dentistry Faculty of Dentistry, Chiang Mai University, Chiang Mai, 50200, Thailand.
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Someya T, Kasahara M, Takemoto S, Hattori M. The Wear Behavior of Glass-Ceramic CAD/CAM Blocks against Bovine Enamel. MATERIALS (BASEL, SWITZERLAND) 2023; 16:6839. [PMID: 37959436 PMCID: PMC10649743 DOI: 10.3390/ma16216839] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/22/2023] [Revised: 10/18/2023] [Accepted: 10/23/2023] [Indexed: 11/15/2023]
Abstract
The wear of enamel and crown restorative materials often occur by occlusion. The purpose of this study was to evaluate the wear volume between glass-ceramics used for CAD/CAM blocks (lithium disilicate: Initial LiSi block (LIS), IPS e.max CAD (IPS), zirconia-reinforced lithium silicate glass-ceramics: Celtra DUO (DUO), VITA Suprinity (VITS) and feldspar-based glass-ceramics: Vitablocs Mark II (MAK)) and bovine tooth enamel using a two-body wear test, the hardness, three-point bending strength, micro-structure and the element components of glass-ceramics. The data were analyzed using a one-way analysis of variance and Tukey's multiple comparison test (α = 0.05). IPS and DUO with relatively large size crystal gain had significantly larger abrader wear volumes. Zirconia-reinforced lithium silicate glass-ceramics (DUO, VITS) caused significantly greater wear volume in antagonist enamel. MAK with scale-shape crystals grains produced distinct scratches after wear tests, both in the material itself and in the enamel. A strong correlation between the mechanical properties (hardness, three-point bending strength) and wear volume could not be confirmed. The type of glass-ceramic, size, and shape of the crystal grains affected the wear behavior of the glass-ceramics for CAD/CAM blocks. Therefore, dentists should consider that wear behavior varies with crystal structure, size, and shape in glass-ceramics for CAD/CAM blocks.
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Affiliation(s)
- Tomoko Someya
- Department of Dental Materials Science, Tokyo Dental College, 2-9-18 Kandamisaki-cho, Chiyoda-ku, Tokyo 101-0061, Japan; (M.K.); (M.H.)
| | - Masaaki Kasahara
- Department of Dental Materials Science, Tokyo Dental College, 2-9-18 Kandamisaki-cho, Chiyoda-ku, Tokyo 101-0061, Japan; (M.K.); (M.H.)
| | - Shinji Takemoto
- Department of Biomedical Engineering, Iwate Medical University, 1-1-1 Idaidori, Yahaba-cho, Iwate, Shiwa-gun 028-3694, Japan;
| | - Masayuki Hattori
- Department of Dental Materials Science, Tokyo Dental College, 2-9-18 Kandamisaki-cho, Chiyoda-ku, Tokyo 101-0061, Japan; (M.K.); (M.H.)
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Shin Y, Wada K, Tsuchida Y, Ijbara M, Ikeda M, Takahashi H, Iwamoto T. Wear behavior of materials for additive manufacturing after simulated occlusion of deciduous dentition. J Mech Behav Biomed Mater 2023; 138:105627. [PMID: 36571853 DOI: 10.1016/j.jmbbm.2022.105627] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2022] [Revised: 12/08/2022] [Accepted: 12/13/2022] [Indexed: 12/15/2022]
Abstract
OBJECTIVES To evaluate wear characteristics of materials for additive manufacturing (AM) after a simulated occlusal test in primary teeth. Wear was simulated by means of impacting - sliding wear testing (ISWT) between specimens prepared from materials for AM against enamel derived from deciduous teeth. METHODS The prepared hemispherical upper specimens were subjected to impacting-sliding wear test (ISWT) machine against the flattened enamel of deciduous molars on lower specimens. The samples were subjected to 20,000 load cycles using a contact force of 30 N between the opposing surfaces under controlled conditions. In the upper specimens, five groups (n=9): four types of additively manufactured materials Dima, Zenith, Detax, Veltz and a deciduous enamel groups were tested in this study. The enamel-to-enamel group was used as the control. Wear characteristics comprised wear surface area, wear depth, wear volumetric loss, and surface roughness were measured with a confocal laser scanning microscopy (CLSM) and scanning electron microscopy (SEM). Data obtained were statistically analyzed by Kruskal-Wallis test and Dunn's test with Bonferroni correction (p < 0.05). RESULTS Dima showed significantly higher worn surface area (p = 0.009, 0.001, and < 0.001 for Zenith, Detax, and control enamel, respectively), volumetric loss (p = 0.027, 0.007, and < 0.001 for Zenith, Detax, and control enamel, respectively), and damaged opposing enamel (p = 0.002, 0.001, and 0.01 for Detax, Veltz, and control enamel, respectively). There was no significant difference among the volumetric loss in Zenith and Detax. However, SEM revealed that Zenith showed rough worn surfaces and chipping, Detax showed rather a smooth circular worn surface. The worn area of Veltz was smaller than Detax and Zenith at 5,000 cycles, but higher at 15,000 and 20,000 cycles, and SEM showed detachment. CONCLUSION Wear behavior was different among different materials for AM. In the upper specimens, DM and VZ showed large wear. In the lower specimens, DM caused largest enamel wear and damage. In contrast, ZT and DX showed lower wear and caused less damage to the antagonistic primary enamel. SEM image of ZT showed large losses due to chipping, whereas DX showed the rather smooth. DX was confirmed to have lowest wear and caused least damage to the opposing deciduous enamel, which might be applicable as restorative treatments in deciduous dentition. SIGNIFICANCE Additive manufactured dental materials could be considered as a treatment modality in deciduous teeth.
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Affiliation(s)
- Yujeong Shin
- Department of Pediatric Dentistry / Special Needs Dentistry, Tokyo Medical and Dental University (TMDU), Japan
| | - Kanae Wada
- Department of Pediatric Dentistry / Special Needs Dentistry, Tokyo Medical and Dental University (TMDU), Japan.
| | - Yumi Tsuchida
- Department of Digital Dentistry, Tokyo Medical and Dental University (TMDU), Japan
| | - Manhal Ijbara
- Pediatric Dentistry Department, Hail Specialized Dental Center, Ministry of Health, Hail, Saudi Arabia
| | - Masaomi Ikeda
- Department of Basic Oral Health Engineering, Tokyo Medical and Dental University (TMDU), Japan
| | - Hidekazu Takahashi
- Department of Basic Oral Health Engineering, Tokyo Medical and Dental University (TMDU), Japan
| | - Tsutomu Iwamoto
- Department of Pediatric Dentistry / Special Needs Dentistry, Tokyo Medical and Dental University (TMDU), Japan
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Roulet JF, Sinhoreti MAC, Pontes S, Rocha MG. Two-body wear resistance and fatigue survival of new Y-TZP and ATZ ceramics made with a new slip-casting method. J Mech Behav Biomed Mater 2022; 136:105535. [PMID: 36302274 DOI: 10.1016/j.jmbbm.2022.105535] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2022] [Revised: 10/14/2022] [Accepted: 10/16/2022] [Indexed: 11/06/2022]
Abstract
BACKGROUND Dental zirconium oxide restorations are milled from pre-sintered blocks or disks which are produced either with high isostatic pressure (HIP) or, simpler, a slurry technique. The objective was to perform a fatigue test and an in vitro wear simulation of two ceramics, yttria-stabilized tetragonal zirconia polycrystal (3Y-TZP) ceramic and a hybrid zirconium oxide-aluminum oxide ceramic, (ATZ) both produced either the classical way using high isostatic pressure (HIP, control) or with a slurry technique. MATERIALS AND METHODS Ten discs/group were subjected to a cyclic biaxial fatigue test using a staircase approach under water at 37 °C in a dynamic universal testing machine. The 2-body wear test was performed on eight lapped 12 mm thick cylindrical samples subjected to spherical (ø 6 mm) leucite ceramic antagonists in a CS-4 chewing simulator at 49 N force and 0.7 mm lateral movement for 600 k cycles and 4167 thermal cycles (5-55 °C). Volumetric wear was calculated based on laser-scanned surfaces. Selected samples of both tests were viewed in SEM. RESULTS All the ceramic specimens produced using the HIP method survived up to 1.2 M cycles with the maximum load of the equipment (1000 N) loading the specimens up to 1527 MPa. The fatigue limit stress at 1.2 M cycles for the Slurry ATZ samples was 946 MPa. For the Slurry Y-TZP samples the fatigue limit stress at 1.2 M cycles was 658 MPa. At 600 k cycles, all zirconium oxide ceramics showed no measurable wear and had a highly polished appearance. The leucite ceramic antagonists wear developed in a linear way. There was no difference between the materials produced with the slurry and the HIP process. ATZ ceramic produced significantly more wear than 3Y- TZP ceramic. CONCLUSIONS The HIP method provided higher fatigue strength than the Slurry manufacturing method. All HIP ceramics surpassed the limit threshold (1527 MPa) of the testing machine. The tested ceramics did not show any measurable wear but had worn the leucite reinforced glass ceramic antagonists for a considerable amount.
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Affiliation(s)
- Jean-François Roulet
- Center of Dental Biomaterials, Department of Restorative Dental Science, College of Dentistry, University of Florida, Gainesville, FL, USA.
| | - Mario Alexandre Coelho Sinhoreti
- Center of Dental Biomaterials, Department of Restorative Dental Science, College of Dentistry, University of Florida, Gainesville, FL, USA; Dental Materials Division, Department of Restorative Dentistry, Piracicaba Dental School, State University of Campinas, Piracicaba, SP, Brazil
| | - Stefany Pontes
- Center of Dental Biomaterials, Department of Restorative Dental Science, College of Dentistry, University of Florida, Gainesville, FL, USA
| | - Mateus Garcia Rocha
- Center of Dental Biomaterials, Department of Restorative Dental Science, College of Dentistry, University of Florida, Gainesville, FL, USA
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Möhn M, Frankenberger R, Krämer N. Wear and marginal quality of aesthetic crowns for primary molars. Int J Paediatr Dent 2022; 32:273-283. [PMID: 34138501 DOI: 10.1111/ipd.12852] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/10/2021] [Revised: 05/12/2021] [Accepted: 05/27/2021] [Indexed: 11/30/2022]
Abstract
BACKGROUND Due to limited aesthetics of stainless-steel crowns, the demand for tooth-coloured crowns has recently risen. Few studies have investigated the marginal integrity and wear behaviour of tooth-coloured primary molar crowns under subcritical load in vitro. AIM This in vitro study evaluated the marginal quality and wear of newly introduced resin composite and hybrid ceramic crowns compared with metal and zirconia crowns. DESIGN Metal, resin composite, hybrid ceramic (CAD/CAM), and various zirconia crowns were investigated. After thermomechanical loading (2,500 thermocycles/100,000 × 50N), marginal quality of luting gaps and wear of crowns/antagonists were evaluated using replicas under a light or 3D laser scanning microscope. Results were analysed with the Mann-Whitney U test or one-way ANOVA (p < .05). RESULTS Marginal quality of the new resin composite and hybrid ceramic crowns performed well in comparison with SSC and zirconia crowns. Adhesive bonding of crowns resulted in superior marginal seal compared with conventional GIC (Mann-Whitney U test, p < .05). Regarding wear, zirconia crowns exhibited significantly worse results than resin composite or hybrid ceramic crowns and SSCs (ANOVA, p < 0.05). CONCLUSION The new resin composite and hybrid ceramic crown exhibited good performance in comparison with SSCs and zirconia crowns considering both wear and marginal quality after subcritical loading.
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Affiliation(s)
- Mirja Möhn
- Department of Pediatric Dentistry, Medical Center for Dentistry, Justus-Liebig-University Giessen and University Medical Center Giessen and Marburg (Campus Giessen), Giessen, Germany
| | - Roland Frankenberger
- Department of Operative Dentistry and Endodontics, Medical Center for Dentistry, Phillips-University Marburg and University Medical Center Giessen and Marburg (Campus Marburg), Marburg, Germany
| | - Norbert Krämer
- Department of Pediatric Dentistry, Medical Center for Dentistry, Justus-Liebig-University Giessen and University Medical Center Giessen and Marburg (Campus Giessen), Giessen, Germany
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Zirconia Crowns for Primary Teeth: A Systematic Review and Meta-Analyses. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 19:ijerph19052838. [PMID: 35270531 PMCID: PMC8910015 DOI: 10.3390/ijerph19052838] [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: 12/14/2021] [Revised: 02/19/2022] [Accepted: 02/21/2022] [Indexed: 02/04/2023]
Abstract
Objective: The aim of this systematic review was to summarize the literature regarding the clinical performance of zirconia crowns for primary teeth. Materials and Methods: Four electronic databases, Ovid, PubMed, Scopus, and Web of Science were searched. Clinical, observational, and laboratory studies were included. Studies that assessed the performance of zirconia crowns for primary teeth using outcomes such as gingival and periodontal health, parental satisfaction, color stability, crown retention, contour, fracture resistance, marginal integrity, surface roughness, and recurrent caries were included. Risk of bias was assessed using different assessment tools depending on the type of the assessed study. Results: Out of the 2400 retrieved records, 73 full-text records were assessed for eligibility. Thirty-six studies were included for qualitative analysis. The included studies reported that zirconia crowns for primary teeth were associated with better gingival and periodontal health, good retention, high fracture resistance, color stability, high parental acceptance, good marginal adaptation, smooth cosmetic surface, and no recurrent caries. Conclusion: Zirconia crowns are promising alternative to other restorative materials and crowns in the field of pediatric dentistry. They showed higher properties and performance in different clinical aspects and great parental satisfaction.
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Wang J, Zhang B, Chen Y, Wang L, Du Y, Wang X. A comparison of the mechanical proprieties of different types of primary tooth restorations: an in vitro study. Clin Oral Investig 2022; 26:4419-4426. [PMID: 35157134 DOI: 10.1007/s00784-022-04404-1] [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: 07/22/2021] [Accepted: 02/06/2022] [Indexed: 11/03/2022]
Abstract
OBJECTIVE To compare the different restoration types of primary teeth to determine which type is appropriate for extensive caries of primary molars and incisors based on mechanical properties. MATERIALS AND METHODS A total of 160 primary teeth were evaluated in this study, including 80 incisors and 80 molars. Each category was divided into four groups: the control group, composite resin group, pre-veneered stainless steel crown (stainless steel crown) group, and zirconia crown group. Compressive strength test and fatigue strength test were performed. RESULTS The compressive strength and fatigue strength of the composite resin group were significantly decreased compared with the control group (P < 0.05). The prefabricated crown groups showed increased fatigue and compressive strength compared with the control group, and the zirconia crown group was higher than that of the pre-veneered stainless steel crown group (P < 0.05). The zirconia crown group was less than the stainless steel crown group (P < 0.05) in the compressive strength but more than the stainless steel crown group (P < 0.05) in the fatigue strength. CONCLUSIONS The compressive strength and fatigue strength of crown restoration were superior to that of the composite resin filling. The fatigue strength of the zirconia crown also performed better than the pre-veneered stainless steel crown and the stainless steel crown. The compressive strength of the zirconia crown was less than that of the stainless steel crown. CLINICAL RELEVANCE The zirconia crown is a new restoration method for primary teeth that may be commonly applied in clinical practice.
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Affiliation(s)
- Junhui Wang
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Disease & Shaanxi Clinical Research Center for Oral Diseases, Department of Children, School of Stomatology, The Fourth Military Medical University, No.145, Changle West Road, Xincheng District, Xi'an, Shaanxi, China
| | - Baize Zhang
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Disease & Shaanxi Clinical Research Center for Oral Diseases, Department of Children, School of Stomatology, The Fourth Military Medical University, No.145, Changle West Road, Xincheng District, Xi'an, Shaanxi, China
| | - Yujiang Chen
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Disease & Shaanxi Clinical Research Center for Oral Diseases, Department of Children, School of Stomatology, The Fourth Military Medical University, No.145, Changle West Road, Xincheng District, Xi'an, Shaanxi, China
| | - Lulu Wang
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Disease & Shaanxi Clinical Research Center for Oral Diseases, Department of Children, School of Stomatology, The Fourth Military Medical University, No.145, Changle West Road, Xincheng District, Xi'an, Shaanxi, China
| | - Yang Du
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Disease & Shaanxi Clinical Research Center for Oral Diseases, Department of Children, School of Stomatology, The Fourth Military Medical University, No.145, Changle West Road, Xincheng District, Xi'an, Shaanxi, China
| | - Xiaojing Wang
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Disease & Shaanxi Clinical Research Center for Oral Diseases, Department of Children, School of Stomatology, The Fourth Military Medical University, No.145, Changle West Road, Xincheng District, Xi'an, Shaanxi, China.
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Schmeiser F, Arbogast F, Ruppel H, Mayinger F, Reymus M, Stawarczyk B. Methodology investigation: Impact of crown geometry, crown, abutment and antagonist material and thermal loading on the two-body wear of dental materials. Dent Mater 2021; 38:266-280. [PMID: 34953628 DOI: 10.1016/j.dental.2021.12.009] [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] [Received: 03/05/2021] [Revised: 11/19/2021] [Accepted: 12/08/2021] [Indexed: 11/03/2022]
Abstract
OBJECTIVES To investigate the impact of crown geometry, crown/abutment/antagonist material and thermal loading on the two-body wear of dental materials caused by chewing simulation. MATERIALS AND METHODS For the crown geometry, crowns (polymethylmethacrylate (PMMA), polyetheretherketone (PEEK) and silicate ceramic (SiO2)) were milled with a flat, steep, or medium cusp inclination (CINC). For the crown/abutment material, crowns (PMMA, PEEK and SiO2) were combined with PMMA, polymer-infiltrated-ceramic-network (PICN), cobalt-chrome alloy (CoCr) and natural teeth (ENAM) abutments. For the antagonist material, antagonists were fabricated from PICN, CAD/CAM resin composite (RECO), steatite (STEA), steel (STL) and ENAM and tested against flat specimens (substrates) made of veneering ceramic (VC). For thermal loading, the duration (30 s, 60 s, 120 s) and presence of temperature changes (37 °C versus 5 °C/55 °C) was varied. Material losses were determined by matching scanned specimens before and after aging (400,000 chewing cycles, 50 N, 1.3 Hz). Martens parameters were determined for the antagonists/substrates. Data were analyzed using Kolmogorov-Smirnov-test, Kruskal-Wallis H, Scheffé-Post-Hoc-tests, pairwise comparisons, Bonferroni correction, one-way ANOVA, Mann-Whitney-U and Spearman rho. RESULTS PMMA crowns presented the highest and PEEK the lowest material losses. Flat CINC showed the lowest material losses for PEEK and SiO2 crowns. CoCr and ENAM abutments presented material losses in the same range. Antagonist and cumulative material losses for RECO and ENAM were similar. Thermal loading did not influence material losses. SIGNIFICANCE Crown geometry influences the crown and antagonists wear, with an increased cusp inclination entailing increased wear. For in vitro set-ups, CoCr abutments and RECO antagonists present valid alternatives to natural teeth. For polymers, in vitro chewing simulations may be performed at a constant temperature (37 °C).
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Affiliation(s)
- Felix Schmeiser
- Dental Material Unit, Department of Prosthetic Dentistry, University Hospital Ludwig-Maximilians-University, Goethestrasse 70, 80336 Munich, Germany.
| | - Fee Arbogast
- Dental Material Unit, Department of Prosthetic Dentistry, University Hospital Ludwig-Maximilians-University, Goethestrasse 70, 80336 Munich, Germany
| | - Hendrik Ruppel
- Dental Material Unit, Department of Prosthetic Dentistry, University Hospital Ludwig-Maximilians-University, Goethestrasse 70, 80336 Munich, Germany
| | - Felicitas Mayinger
- Dental Material Unit, Department of Prosthetic Dentistry, University Hospital Ludwig-Maximilians-University, Goethestrasse 70, 80336 Munich, Germany
| | - Marcel Reymus
- Department of Conservative Dentistry and Periodontology, University Hospital Ludwig-Maximilians-University, Goethestrasse 70, 80336 Munich, Germany
| | - Bogna Stawarczyk
- Dental Material Unit, Department of Prosthetic Dentistry, University Hospital Ludwig-Maximilians-University, Goethestrasse 70, 80336 Munich, Germany
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Rocha MCM, Inácio GC, Taira TM, Delgado RZR, Maciel SM, Frítola M. Zirconia crowns as an esthetic alternative for oral rehabilitation in pediatric dentistry: A review. PEDIATRIC DENTAL JOURNAL 2021. [DOI: 10.1016/j.pdj.2021.07.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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