Mechanical properties of CAD/CAM polylactic acid as a material for interim restoration.

ABSTRACT:

Statement of problem

Biomaterials, including polymethyl methacrylate (PMMA) and bisacrylate, have been widely used as conventional interim materials and may exhibit cytotoxicity or systemic toxicity.

Purpose

This study was designed to compare the mechanical properties of polylactic acid (PLA) as an alternative to conventional dental polymers for computer-aided design and manufacturing (CAD/CAM).

Material and methods

Four groups (n = 20 per group) of CAD/CAM polymers were assessed. Specimens of PLA (PLA Mill) and PMMA (PMMA Mill) for subtractive manufacturing, PLA for fused deposition modeling (PLA FDM), and bisphenol for additive manufacturing by stereolithography (Bisphenol SLA) were fabricated into 2-mm-wide, 2-mm-thick and 25-mm-long specimens using a milling machi

SUBMITTER: Choi WI 

PROVIDER: S-EPMC10122041 | biostudies-literature | 2023 Apr

REPOSITORIES: biostudies-literature