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Abstract
Objectives The main purpose of this study is to evaluate the efficacy of polyetheretherketone (PEEK) as a material for prefabricated crown restorations in pediatric dentistry, particularly for restoring primary tooth structure defects. Materials and methods This study analyzed the effects of three surface treatment modalities on PEEK’s surface morphology, wettability (as measured by contact angle), and shear bond strength. These treatments included alumina (Al2O3) sandblasting alone, and in conjunction with a 98% sulfuric acid pretreatment. Subsequently, an evaluation was conducted to assess the compressive and fatigue properties of self-fabricated PEEK preformed crowns, preformed metal crowns, and preformed zirconia crowns. Results Al2O3 sandblasting followed by sulfuric acid pretreatment significantly enhanced the bond strength of PEEK. PEEK crowns, when compared with stainless steel and zirconia crowns, showed similar compressive and fatigue strengths to zirconia crowns but lower than metal alternatives. Additionally, PEEK crowns required less extensive modification of dental abutments compared to zirconia crowns. Conclusions The study concludes that PEEK prefabricated crown, especially after alumina (Al2O3) sandblasting in conjunction with a 98% sulfuric acid pretreatment, exhibits improved bond strength and favorable material characteristics for use in pediatric dental restorations. Clinical relevance The findings highlight the potential of PEEK prefabricated crowns in pediatric dentistry as a viable option for the aesthetic restoration of primary teeth, offering benefits over traditional materials like stainless steel and zirconia in terms of preferable compressive and fatigue strengths and ideal reduction of dental abutments.
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Details
1 National Clinical Research Center for Oral Diseases, The Fourth Military Medical University, State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Shaanxi Clinical Research Center for Oral Diseases, Department of Pediatric Dentistry, School of Stomatology, Xi’an, P. R. China (GRID:grid.233520.5) (ISNI:0000 0004 1761 4404); Fourth Military Medical University, Department of Neurobiology and Institute of Neurosciences, School of Basic Medicine, Xi’an, P. R. China (GRID:grid.233520.5) (ISNI:0000 0004 1761 4404)
2 National Clinical Research Center for Oral Diseases, The Fourth Military Medical University, State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Shaanxi Clinical Research Center for Oral Diseases, Department of Orthodontics, School of Stomatology, Xi’an, P. R. China (GRID:grid.233520.5) (ISNI:0000 0004 1761 4404)
3 The Fourth Military Medical University, State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Nation Clinical Research Center for Oral Diseases, Shaanxi Engineering Research Center for Dental Materials and Advanced Manufacture, Department of Dental Materials, School of Stomatology, Xi’an, P. R. China (GRID:grid.233520.5) (ISNI:0000 0004 1761 4404); The University of Hong Kong, Hong Kong Special Administrative Region of China, Division of Applied Oral Sciences and Community Dental Care, Faculty of Dentistry, Hong Kong, P. R. China (GRID:grid.194645.b) (ISNI:0000 0001 2174 2757)
4 The Fourth Military Medical University, State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Nation Clinical Research Center for Oral Diseases, Shaanxi Engineering Research Center for Dental Materials and Advanced Manufacture, Department of Dental Materials, School of Stomatology, Xi’an, P. R. China (GRID:grid.233520.5) (ISNI:0000 0004 1761 4404)
5 University of Bristol, Bristol Dental School, Bristol, UK (GRID:grid.5337.2) (ISNI:0000 0004 1936 7603)