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Tropical Dental Journal - 1st Pan African international dental journal


Tropical Dental Journal



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Published in French in Tropical Dental Journal Volume 25 - December 2002 pages 5-8

Water absorption of five resin materials used in bonded conservative dentistryWater absorption of five resin materials used in bonded conservative dentistry est évalué 1 étoiles par les abonnés Tropical Dental Journal Online

Article Open access

Authors : D. GILLET, V. DUPUIS - France


Résumé

La dentisterie restauratrice actuelle fait appel au collage de matériaux qui sont soumis aux contraintes de la présence de la salive susceptible, comme tout liquide, de pénétrer à l'intérieur même du produit avec le temps et d'en modifier ainsi les caractéristiques. Nous comparerons dans ce travail, le comportement de cinq matériaux vis-à-vis de l'absorption d'eau, in vitro, jusqu'à un an : deux résines composites (Tetric® et Pertac II®), deux ceromer (Tetric ceram® et Tetric flow®), et un compomer (Hytac®).
A chaque pesée des pastilles de produit, le poids est exprimé en pourcentage du poids initial. Tous les produits perdent du poids dans les premières heures sauf Tetric ceram® qui reste stable. En 48 h, tous les produits sauf Pertac II® ont retrouvé leur poids initial. A long terme tous les produits se stabilisent avec un gain de 1% pour Hytac® de 0.5% pour Pertac II®, Tetric ceram® et Tetric flow®, et une perte de 0.3% pour Pertac II®.
Suite à ces résultats, on comprendra pourquoi l'utilisation clinique de Hytac® doit se faire dans des conditions bien précises.

Abstract
Water absorption of five resin materials used in bonded conservative dentistry

The actual restorative dentistry need to bond material which are under the constraint of saliva likely, as all liquid, to enter inside the product with time and to modify its characteristics. In this study, we compare the behaviour of five materials opposite water absorption, in vitro, until one year : two composite resins (Tetric® et Pertac II®), two ceromer (ceromer (Tetric ceram® et Tetric flow®) and one compomer (Hytac(r)).
Each pastille weight is expressed in percentage of initial weight. All materials loose weight in the first hours except Tetric ceram® which stay stable. At 48 h, all materials except Pertac II® get back their initial weight. At long-term, all the materials are stable with a profit of 1% for Hytac®, 0.5% for Tetric®, Tetric ceram® et Tetric flow® and a loss of à 0.3 % for Pertac II®.
As a result of this study, we understand why the clinical used of Hytac® must be done following strict conditions.

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