Sodium carbonate improves adherence of two-layer alginate for preliminary impressions of complete dentures. - Université de Lille Accéder directement au contenu
Article Dans Une Revue American Journal of Dentistry Année : 2022

Sodium carbonate improves adherence of two-layer alginate for preliminary impressions of complete dentures.

Résumé

Purpose: This in vitro study evaluated the effect of sodium carbonate (Na₂CO₃) concentration on adhesion between two layers of irreversible hydrocolloid wash impression material. Methods: The first layer of irreversible hydrocolloid was brushed with three concentrations (0.1, 0.7, or 7.0 wt.%) of Na₂CO₃. Irreversible hydrocolloid not brushed with Na₂CO₃ was used as a negative control. Adhesion between the two layers (bond strength and adhesion energy) was then evaluated using a traction test, and the fracture modes were identified. The results of traction test were analyzed with a one-way ANOVA followed by a Tukey post hoc test. Chi-square test was used for analyzed failure mode after testing (α= 0.05). Results: The bond strength (0.034 ±0.005 MPa) and adhesion energy (60.240 ±12.817 J.m⁻ ²) of the 0.7% Na₂CO₃ group were significantly higher than those of the other groups (P< 0.05). The 0.7% Na₂CO₃ group displayed only cohesive failure (ײ= 16; P< 0.0001). Clinical significance: Conditioning the surface of the first layer of irreversible hydrocolloid with 0.7% sodium carbonate improved adhesion between the two layers and may help clinicians improve the quality of the preliminary impressions of removable complete dentures.
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Dates et versions

hal-04191102 , version 1 (29-04-2024)

Identifiants

  • HAL Id : hal-04191102 , version 1
  • PUBMED : 35798708

Citer

Thomas Denneulin, Corentin Denis, Pascal Behin, Feng Chai, Thierry Delcambre, et al.. Sodium carbonate improves adherence of two-layer alginate for preliminary impressions of complete dentures.. American Journal of Dentistry, 2022, American Journal of Dentistry, 35 (2), pp.137-140. ⟨hal-04191102⟩

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