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Research articles

ScienceAsia 46S (2020):ID 97-101 |doi: 10.2306/scienceasia1513-1874.2020.S014


The modification of acrylic denture base resin as materials for artificial teeth: Effect of hydroquinone and methyl methacrylate monomer


Pornchiwin Banjonga, Natthawika Sankhama, Watchara Duangngaa, Uraiwan Intathaa,b, Nattakan Soykeabkaewa,b, Sitthi Duangpheta,b,*

 
ABSTRACT:     The purpose of this project is to modify denture base resin for use as artificial teeth material. Generally, resin for denture base will harden within a few minutes but the working period for artificial teeth shaping is about 30 min. Adding methyl methacrylate (MMA) monomer to dilute accelerator and adding hydroquinone (HQ replica watches) as an inhibitor are considered in order to extend the solidifying time of denture base resin. The ratios of denture base resin/MMA in this study were 3:1, 2:2 and 1:3 v/v and the concentration of HQ was varied from 0.01-0.05 wt%. The results indicated that both HQ and MMA prolonged solidification time of denture base resin and HQ was more effective in increasing working time than MMA. However, the introduction of HQ and MMA decreased mechanical properties of the resin including flexural strength, flexural modulus and hardness, so further modifications such as addition of fillers are required.

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a School of Science, Mae Fah Luang University, Chiang Rai 57100 Thailand
b Center of Innovative Materials for Sustainability (iMatS), Mae Fah Luang University, Chiang Rai 57100 Thailand

* Corresponding author, E-mail: sitthi.dua@mfu.ac.th

Received 15 Oct 2019, Accepted 28 Mar 2020