PDF(Pubmed)
Abstract：
BACKGROUND: Multi-rooted teeth with extensive dental defects often face challenges in stability and biomechanical failure. High-performance polymer PEEK materials, with properties closer to dentin, show promise in reducing stress concentration and preserving tooth structure. This report aimed to explore the use of a highly retentive polyetheretherketone (PEEK) for manufacturing custom-made split post and core for the restoration of grossly destroyed endodontically treated molars.
METHODS: A 40-year-old female patient presented with complaints of loss of tooth substance in the posterior mandibular tooth. This case involved the digital design and fabrication of PEEK split post and core to restore multirooted molar with insufficient dental tissue remnants. The restorations were evaluated over a 3-year follow-up using the World Federation criteria (FDI). The restoration was clinically evaluated through intraoral examination, radiographic assessment, and subjective patient satisfaction, and was deemed clinically good according to FDI criteria.
CONCLUSIONS: The outstanding mechanical properties of PEEK, coupled with the structure of the split post, provide an effective treatment option for weakened multirooted teeth. Simultaneously, the restoration configuration effectively addressed the challenge of varying postinsertion directions, and the interlocking mechanism between the primary and auxiliary posts enhanced the stability of the post and core.
METHODS: A 40-year-old female patient presented with complaints of loss of tooth substance in the posterior mandibular tooth. This case involved the digital design and fabrication of PEEK split post and core to restore multirooted molar with insufficient dental tissue remnants. The restorations were evaluated over a 3-year follow-up using the World Federation criteria (FDI). The restoration was clinically evaluated through intraoral examination, radiographic assessment, and subjective patient satisfaction, and was deemed clinically good according to FDI criteria.
CONCLUSIONS: The outstanding mechanical properties of PEEK, coupled with the structure of the split post, provide an effective treatment option for weakened multirooted teeth. Simultaneously, the restoration configuration effectively addressed the challenge of varying postinsertion directions, and the interlocking mechanism between the primary and auxiliary posts enhanced the stability of the post and core.
摘要：
背景：具有广泛牙齿缺损的多根牙通常面临稳定性和生物力学失败的挑战。高性能聚合物PEEK材料，属性更接近牙本质，在减少应力集中和保持牙齿结构方面显示出希望。本报告旨在探索使用高保持性聚醚醚酮（PEEK）制造定制的分裂柱和核，以恢复严重破坏的牙髓治疗磨牙。
方法：一名40岁女性患者主诉下颌后牙的牙齿物质丢失。此案例涉及PEEK分裂柱和核心的数字设计和制造，以恢复牙齿组织残留物不足的多根磨牙。使用世界联合会标准（FDI）在3年的随访中对修复进行了评估。修复通过口腔内检查进行临床评估，射线照相评估，和患者的主观满意度，根据FDI标准被认为是临床良好的。
结论：PEEK的优异机械性能，再加上分裂柱的结构，为弱化的多根牙齿提供有效的治疗选择。同时,恢复配置有效地解决了不同插入后方向的挑战，主柱和辅助柱之间的互锁机制增强了柱和芯的稳定性。
方法：一名40岁女性患者主诉下颌后牙的牙齿物质丢失。此案例涉及PEEK分裂柱和核心的数字设计和制造，以恢复牙齿组织残留物不足的多根磨牙。使用世界联合会标准（FDI）在3年的随访中对修复进行了评估。修复通过口腔内检查进行临床评估，射线照相评估，和患者的主观满意度，根据FDI标准被认为是临床良好的。
结论：PEEK的优异机械性能，再加上分裂柱的结构，为弱化的多根牙齿提供有效的治疗选择。同时,恢复配置有效地解决了不同插入后方向的挑战，主柱和辅助柱之间的互锁机制增强了柱和芯的稳定性。
