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CAD/CAM 义齿基托树脂的机械性能。

Mechanical Properties of CAD/CAM Denture Base Resins.

出版信息

Int J Prosthodont. 2019 Jan/Feb;32(1):104-106. doi: 10.11607/ijp.6025.

DOI:10.11607/ijp.6025
PMID:30677121
Abstract

PURPOSE

To evaluate the influence of fabrication processes on the mechanical properties of denture base resins.

MATERIALS AND METHODS

Flexural strength, fracture toughness, and Vickers hardness were measured on a conventional pack-and-press resin (PRO), a resin for injection molding (CAP), and a CAD/CAM disc (CAD).

RESULTS

For maximal flexural strength, PRO (97.31 MPa) was stronger than CAD (87.98 MPa) and CAP (79.35 MPa). CAD displayed hardness similar to PRO and high fracture toughness.

CONCLUSION

CAD/CAM denture base resin mechanical properties result from the evolution of denture base materials, combining high-impact fracture toughness and improved flexural strength and hardness.

摘要

目的

评估制作工艺对义齿基托树脂机械性能的影响。

材料与方法

对常规填充-压模树脂（PRO）、注压成型树脂（CAP）和 CAD/CAM 片（CAD）进行弯曲强度、断裂韧性和维氏硬度测试。

结果

最大弯曲强度时，PRO（97.31 MPa）强于 CAD（87.98 MPa）和 CAP（79.35 MPa）。CAD 的硬度与 PRO 相近，断裂韧性高。

结论

CAD/CAM 义齿基托树脂的机械性能源于义齿基托材料的演变，兼具高抗冲击断裂韧性和更高的弯曲强度和硬度。

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