Evaluation of surface characteristics and mechanical properties of denture base resins containing nano-sized surface pre-reacted glass-ionomer filler

การประเมินผลของลักษณะพื้นผิวและความแข็งแรงเชิงกลของฐานฟันเทียมอะคริลิกเรซินที่มีการเสริมวัสดุอัดแทรกด้วยเซอร์เฟสพรีรีแอคเต็ดกลาสไอโอโนเมอร์ขนาดนาโน

Name: Kwanchanok Ratanakupt

keyword: Resin denture base

; Nano-sized S-PRG fillers

; Micron-sized S-PRG fillers

; Mechanical properties

; Flexural strength

; Surface characteristics

; Nano particles

; Fluoride denture

Abstract: Background: While poly (methyl methacrylate) (PMMA) denture base resin materials containing micron-sized surface pre-reacted glass-ionomer (S-PRG) filler was approved to be used in clinic applications, the understanding of newly developed PMMA denture base resin containing nano-sized S-PRG filler was very low. This study was conducted to investigate the surface roughness, surface hardness, and flexural strength properties of PMMA denture base resin containing nano-sized SPRG filler compare to micron-sized S-PRG filler. Methods: Bars and discs specimen were prepared by ready mixed polymer powder of PMMA containing 0 (control), 10 (n10%), 20 (n20%), 30 (n30%) wt% nano-sized and 20 (m20%) wt% micron-sized surface S-PRG filler. After water storage at 37°C, surface morphology (n=2), surface roughness (n=6) and surface hardness (n=6) of all discs were measured using SEM, contact profilometer and micro-hardness tester respectively. The flexural strength (n=5) of all bars was measured using a universal testing machine, then the fractured surfaces were examined by SEM. ANOVA was used to analyze surface roughness, surface hardness, and flexural strength value (p ≤0.05). Results: In terms of surface roughness and surface hardness, the data showed no statistically significant difference between all groups. In terms of flexural strength, n10% (69.7 N), n20% (57.6 N), m20% (67.05 N) groups showed significantly lower levels of flexural strength compared with 0% control group (93.57 N), but n10% and m20% group values remaining within ISO standard 20795-1. The n30% (44.38 N) group showed the lowest flexural strength statistic significantly compared with all groups. Conclusions: The flexural strength of PMMA denture base resin was diminished by adding more amount of nano-sized S-PRG filler but did not generate any significant change on surface roughness or surface hardness

Thammasat University. Thammasat University Library

Address: BANGKOK

Email: preserv@tu.ac.th

Name: Kritirat Kiatsirirote

Role: advisor

Created: 2021

Modified: 2023-11-20

Issued: 2023-11-20

วิทยานิพนธ์/Thesis

application/pdf

DOI: 10.14457/TU.the.2021.1191

eng

DegreeName: Master of Science

Level: Master's Degree

Descipline: Dentistry

Grantor: Thammasat University

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