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April 21, 2026Dental Press Journal of OrthodonticsOpen Access

Effects of carbonated drinks, alcoholic drinks and mouthwashes with varying pH on mechanical properties and colour stability of various thermoplastic retainers, aligners and occlusal splints: an in-vitro study

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Authors

MNMahulkar NIHARIKAVMVizia MuddadaNPNavya Puvvula

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Overview

In-vitro study evaluates mechanical properties and aesthetics of thermoplastic appliances, indicating beverage impact.

Key Points

  • To assess how carbonated drinks, alcoholic beverages, and mouthwashes affect the mechanical properties and colour stability of thermoplastic materials used in orthodontics.
  • Immersed 144 thermoplastic samples in various beverages for 10 minutes daily over 14 days.
  • Measured mechanical properties using a universal testing machine and colour changes using a colorimeter.
  • Conducted statistical analysis using one-way ANOVA (p < 0.05).
  • Saline immersion resulted in the highest yield strength and stiffness for Erkodur and Duran.
  • Carbonated drinks caused the greatest reduction in mechanical properties for retainers.
  • Alcoholic beverages led to significant colour changes, especially in Duran and Erkoflex, while Bioplast showed minimal colour difference.

Cite This Study

NIHARIKA et al. (2026) studied this question.

synapsesocial.com/papers/69e7132bcb99343efc98ce88https://doi.org/10.1590/2177-6709.31.1.e2625178.oar
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Also Consider

Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context:

  1. 1Influence of varying oral pH conditions on the material stability of thermoplastic orthodontic aligners: an in vitro study2026
  2. 2Effect of extrinsic and intrinsic factors on colour stability of 3D-printed, thermoplastic, and conventional resin materials: an in vitro study2025
  3. 3Color and Chemical Stability of 3D-Printed and Thermoformed Polyurethane-Based Aligners2024 · 43 citations
  4. 4Colorimetric Evaluation of Various Orthodontic Thermoformed Retainers Exposed to Different Staining Agents and Cleaning Techniques2024 · 2 citations
  5. 5Evaluation of color stability and material surface stability of different types of clear aligners under curcumin staining in vitro2025