Color and flexural properties of nanoparticles-modified denture base resin: An in vitro comparative study

Authors

  • Abdel-Naser M. Emam Prosthetic Dental Science Department, Faculty of Dentistry, Najran University, Najran, Saudi Arabia.
  • Karim-Eldin Ibrahim Ahmed Dentist, Ministry of Health and Population, Giza, Egypt
  • Adel M. Shaaban Associate Professor, Dental Bio-Materials Department, Faculty of Dental Medicine, (Boys), Cairo, Al-Azhar University
  • Mohammad Abdullah Alqhtani Assistant Professor, Prosthetic Dental Science Department, Faculty of Dentistry, Najran University, Najran, Saudi Arabia
  • Mohammed M. Gad a:1:{s:5:"en_US";s:146:"Department of Substitutive Dental Sciences, College of Dentistry, Imam Abdulrahman Bin Faisal University, P.O. Box 1982, Dammam 31441 Saudi Arabia";}
  • Mohamed Ahmed Helal Professor, Department of Prosthodontics, Faculty of Dental Medicine, Al-Azhar University, Cairo, Egypt

Keywords:

color change, denture base, mechanical testing, nanoparticles, polymethylmethacrylate

Abstract

Objectives: Reinforcement of polymethylmethacrylate (PMMA) denture base resins (DBRs) with inorganic fillers with superior properties and accepted aesthetics are favored and still a big dilemma. This study was undertaken to evaluate the color change, flexural strength, and modulus of elasticity of heat-polymerized DBR material modified
with silver nanoparticles (AgNPs) and zirconium dioxide nanoparticles (ZNPs).

Methods: Sixty acrylic specimens (30/color test, 30/flexural properties) were fabricated and divided according to nanoparticles type and addition into 3 groups (n = 10). Group-I; unmodified specimens, Group-II; modified specimens with 0.5wt% AgNPs (PMMA/AgNPs), and Group-III; modified specimens with 7.5wt% ZNPs (PMMA/ZNPs). Disc-shape (20 × 3 mm) and bar-shape (65 × 10 × 2.5 mm) specimens were fabricated for color and flexural properties, respectively. The spectrophotometer was used for evaluation of the color change (ΔE). The flexural strength and elastic modulus evaluation was carried out using a 3-point bending test (5 mm/min). Tukey’s post hoc and one-way ANOVA were used to analyze the data at a significant level P ≤ 0.05.

Results: PMMA/AgNPs group exhibited a significant increase in color change when compared with PMMA/ZNPs. PMMA/ZNPs showed significantly the highest flexural strength value when compared with unmodified and PMMA/AgNPs groups (P < 0.001), however, there was an absence of significant differences in terms of flexural strength values between PMMA/AgNPs and unmodified groups (P > 0.05). PMMA/AgNPs insignificantly increased its modulus of elasticity strength (P = 0.09410) while PMMA/ZNPs significantly increased its modulus of elasticity strength (P = 0.00396).

Conclusion: The AgNPs and ZNPs addition to PMMA increased the color change and AgNPs change the color of DBRs. The flexural attributes of DBRs have been increased by ZNPs.

Downloads

Published

2024-05-01

How to Cite

Emam, A.-N. M., Ibrahim Ahmed, K.-E., Shaaban, A. M., Alqhtani, M. A., Gad, M. M., & Helal, M. A. (2024). Color and flexural properties of nanoparticles-modified denture base resin: An in vitro comparative study. International Journal of Health Sciences, 18(3), 23–29. Retrieved from https://pub.qu.edu.sa/index.php/journal/article/view/8432

Issue

Vol. 18 No. 3 (2024): May-Jun

Section

Original Paper

License

Creative Commons License

This work is licensed under a Creative Commons Attribution 4.0 International License.


Authors who publish with this journal agree to the following terms:

    1. Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.

    1. Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.

  1. Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).