State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Shaanxi Clinical Research Center for Oral Diseases, Department of Pediatric Dentistry, School of Stomatology, National Clinical Research Center for Oral Diseases, The Fourth Military Medical University, Xi'an, 710032, Shaanxi, P. R. China.
Department of Neurobiology and Institute of Neurosciences, School of Basic Medicine, Fourth Military Medical University, Xi'an, 710032, Shaanxi, P. R. China.
Sci Rep. 2024 Nov 18;14(1):28398. doi: 10.1038/s41598-024-79306-1.
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 (AlO) 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 AlO 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 (AlO) 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.
本研究的主要目的是评估聚醚醚酮（PEEK）作为儿科牙科预制冠修复材料的疗效，特别是用于修复乳牙结构缺陷。
本研究分析了三种表面处理方式对 PEEK 表面形貌、润湿性（以接触角衡量）和剪切结合强度的影响。这些处理方式包括单独的氧化铝（AlO）喷砂处理，以及与 98%硫酸预处理相结合的处理方式。随后，评估了自加工 PEEK 预制冠、预制金属冠和预制氧化锆冠的抗压和疲劳性能。
AlO 喷砂处理后进行硫酸预处理显著提高了 PEEK 的结合强度。与不锈钢和氧化锆冠相比，PEEK 冠具有与氧化锆冠相似的抗压和疲劳强度，但低于金属替代品。此外，与氧化锆冠相比，PEEK 冠对牙基台的修改范围较小。
研究表明，PEEK 预制冠，特别是经过氧化铝（AlO）喷砂处理后再进行 98%硫酸预处理，具有改善的结合强度和适合儿科牙科修复的材料特性。
研究结果强调了 PEEK 预制冠在儿科牙科中的应用潜力，作为乳牙美学修复的一种可行选择，在抗压和疲劳强度方面优于传统材料如不锈钢和氧化锆，并且对牙基台的理想修改范围较小。
