RESEARCH AND ACADEMIC EXPLORATION ABOUT OPTIMAL ATTITUDES OF DENTAL FILLING MATERIALS

Dániel Száva, Botond-Pál Gálfi, János Száva, Piroska Orbán

Abstract

Nowadays, dental filling materials with fizionomic properties are mostly used in dental care. Due to this, more and more products, which we know quite little about, appear on the market. During the curing process they all have certain polymerization shrinkage. Most of the dental practitioners believe that polymerization shrinkage is the causing mechanism of poor marginal adaptation between the two surfaces (tooth-filling material), ultimately leading to micro leakage and appearance of secondary caries lesions. Although this misconception is in clear contradiction with the facts experienced in dental practice it is widely spread. Our purpose is to demonstrate that poor marginal adaptation is caused mainly by the different elastic modules of the tooth and filling materials, and its consequences. We also wanted to categorize some of the most widely spread dental filling materials of our region from this point of view. This is important for us, because the least elastic material will exercise the smallest amounts of horizontal forces on the walls of the cavity during its deformation, in response of the vertical masticator forces. Summarising these, the dental filling material with the highest Young's modulus will not fracture the tooth's walls, and will not provoke micro-cracks in the tooth's tissues.

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DOI

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IMEKO TC

TC15 - Experimental Mechanics

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