2012, Number 2
Rev Cubana Estomatol 2012; 49 (2)
Bonnin CE, Urquia MMC
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ABSTRACTTe loss of tissue in the cervical zone has been attributed to the erosion and abrasion provoked by toothbrush. The role of occlusal forces is a very important factor to be taken into account in the development and advance of these carious non-cervical lesions. To distinguish the different mechanical properties and mainly the elasticity module of aesthetic material used for repair of this type of lesion, will allows a great survival of the obturations and in large extent in the treatment of our patients. The aim of present paper was to assess the elasticity module of 6 esthetic restoring materials. Following the ISO 4049 rule 10 test tubes of ach experimental material. A flexion assay of 3 points with INSTRON 4486 was used. From the numerical relation among the tension values (T) and deformation (D) we obtained the elasticity or Young (E) elasticity module for each experimental material. The variance analysis showed significant differences (p < 0.0001) among the different materials. The flow compomers were those with better results in this experimental condition, being the more suitable for repair of lesions of abfraction.