Effect of Nano Ceramic Coating on Color Perceptibility and Acceptability of Polymethylmethacrylate: In Vitro and Clinical Study

Laura Koo Min Chee, Arghya Kamal Bishal, Harshdeep Singh Bhatia, Alvin G. Wee, Christos Takoudis, Cortino Sukotjo, Judy Chia Chun Yuan

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

The effect of a novel nano-ceramic coating (TiO2) using an atomic layer deposition (ALD) technique on the surface of polymethyl methacrylate (PMMA) material was investigated. The patients’ and clinicians’ perception and acceptance of the PMMA color with TiO2 coating were also examined. In vitro color measurement was performed on thirty specimens (light, original, and dark pink) before and after TiO2 coating. Patients’ and clinicians’ perception and acceptance of color changes on PMMA were measured and compared. Descriptive and analytic statistics were analyzed (a = 0.05). TiO2 films were successfully deposited on the PMMA specimen by the ALD technique. Color changes after TiO2 coating were observed on all three PMMA shades, significantly higher than the established 50:50% perceptibility threshold, but below the established 50:50% acceptability threshold. The percentage of patients that perceived a color difference after TiO2 coating were 83.3%, 63.9%, and 77.8% for light, original, and dark pink, respectively. The percentages of clinicians that were satisfied with the color difference were 96.4%, 80%, and 69.2% for light, original, and dark pink, respectively. Color changes after TiO2 coating were observed, but below the acceptable threshold. The clinical survey demonstrated that a color difference was perceived but was clinically acceptable. In general, laypeople have lower perception and higher acceptance of changes in PMMA color than clinicians.

Original languageEnglish (US)
Article number8748
JournalMaterials
Volume15
Issue number24
DOIs
StatePublished - Dec 2022

Bibliographical note

Funding Information:
This research was funded by American College of Prosthodontists Education Foundation.

Publisher Copyright:
© 2022 by the authors.

Keywords

  • color
  • denture base
  • maxillofacial prosthesis
  • poly methyl methacrylate
  • prosthesis coloring
  • titanium dioxide

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