TY - JOUR
T1 - Improving the strength properties of denture base acrylic resins using hibiscus sabdariffa natural fiber
AU - Okeke, Kenneth N.
AU - Vahed, Anisa
AU - Singh, Shalini
N1 - Funding Information:
The financial assistance of the National Research Foundation towards this research is hereby acknowledged.
Publisher Copyright:
© 2018, University of Dicle.
PY - 2018
Y1 - 2018
N2 - Various materials have been reported to improve the strength and fatigue resistance of poly methyl methacrylate (PMMA) denture base resins, however there is limited evidence on using natural fibers. This study determined the flexural and impact strengths of Hibiscus sabdariffa fiber-reinforced PMMA acrylic resins. From the 50 PMMA specimens fabricated, 40 were reinforced with Hibiscus sabdariffa fibers of different weight percentages (wt%) and 10 were unreinforced. There were two sample groups, each consisting of 25 PMMA specimens for flexural and impact strengths testing, respectively. Statistically, ANOVA and Bonferroni tests showed significant differences among the groups. Flexural strength results revealed that PMMA reinforced with 7.5 wt% fibers produced the highest mean value (101.20 ±3.654) MPa, followed by the 10 wt% (88.67±13.752) MPa, unreinforced (83.55±0.618) MPa, 5 wt% (75.58 ±3.676) MPa, and 2.5 wt% (68.84 ±4.293) MPa. Impact test results revealed that PMMA reinforced with 7.5 wt% fibers had the highest mean value (32.01±0.015) KJ/M2, followed by 10 wt% (24.48 ±0.010) KJ/M2, 5 wt% (23.54 ±0.006) KJ/M2, 2.5 wt% (17.89 ±0.006) KJ/M2 and the unreinforced (13.12 ±0.003) KJ/M2. Essentially, the inclusion of 7.5 wt% Hibiscus sabdariffa fibers improved the strength properties of PMMA denture base resins.
AB - Various materials have been reported to improve the strength and fatigue resistance of poly methyl methacrylate (PMMA) denture base resins, however there is limited evidence on using natural fibers. This study determined the flexural and impact strengths of Hibiscus sabdariffa fiber-reinforced PMMA acrylic resins. From the 50 PMMA specimens fabricated, 40 were reinforced with Hibiscus sabdariffa fibers of different weight percentages (wt%) and 10 were unreinforced. There were two sample groups, each consisting of 25 PMMA specimens for flexural and impact strengths testing, respectively. Statistically, ANOVA and Bonferroni tests showed significant differences among the groups. Flexural strength results revealed that PMMA reinforced with 7.5 wt% fibers produced the highest mean value (101.20 ±3.654) MPa, followed by the 10 wt% (88.67±13.752) MPa, unreinforced (83.55±0.618) MPa, 5 wt% (75.58 ±3.676) MPa, and 2.5 wt% (68.84 ±4.293) MPa. Impact test results revealed that PMMA reinforced with 7.5 wt% fibers had the highest mean value (32.01±0.015) KJ/M2, followed by 10 wt% (24.48 ±0.010) KJ/M2, 5 wt% (23.54 ±0.006) KJ/M2, 2.5 wt% (17.89 ±0.006) KJ/M2 and the unreinforced (13.12 ±0.003) KJ/M2. Essentially, the inclusion of 7.5 wt% Hibiscus sabdariffa fibers improved the strength properties of PMMA denture base resins.
KW - Flexural strength
KW - Hibiscus sabdariffa fibers
KW - Impact strength
KW - Natural fibers
KW - Polymethyl methacrylate
UR - http://www.scopus.com/inward/record.url?scp=85046465086&partnerID=8YFLogxK
M3 - Article
AN - SCOPUS:85046465086
SN - 1309-100X
VL - 11
SP - 248
EP - 254
JO - Journal of International Dental and Medical Research
JF - Journal of International Dental and Medical Research
IS - 1
ER -