IN VITRO WEAR OF 4 DIFFERENT UNIVERSAL COMPOSITES
Patricia MATIAS
DDS student , Scientific Initiation Scholar Department of Dentistry , Faculty of Health Sciences ,
University of Brasília , Brasília , Brazil
CV
Patricia Matias is a DDS student of the University of Brasília ( UnB ). She had a scholarship for PET-Saúde Extension Program ( 2010 / 2012 ). Since 2010 , she has been participating in the Integral Health and Education Extension Project . She also had a scholarship ( 2013 / 2014 ) from CAPES / IIE / Science without Borders to study at the University of Florida ( UF ). During this period , she studied English , participated in research activities and took courses at the Division of Operative Dentistry and Dental Biomaterials at UF . Therefore , she has benefited from training in dental technology , CAD / CAM , microtensile , thermocycling , chewing simulation , MARC resin calibration ( analysis of fotopolimerization light ), ceramic and composites . In 2015 she treated children and adults at J . J Mesquita Hospital Ship in Amazonas River-Brazil . Currently , she is a Scientific Initiation Scholar ( PIBIC ) mentored by Prof Dr . Leandro Augusto Hilgert at UnB and has a scholarship from CNPQ . Her interest lies with Dental Materials and Operative Dentistry .
Questions
In the literature the chewing forces are reported to vary from :
q a . 30 to 50 N ; q b . 100 to 800 N ; q c . 20 to 120 N ; q d . 5 to 25 N .
All the following devices are two body wear devices , with one exception :
q a . TE88 ; q b . Willitec Chewing simulator ; q c . CoCom Chewing simulator ; q d . Alabama wear simulator .
In in vitro wear studies , one of the following materials is used to create the antagonists : q a . Leucite reinforced ceramic ; q b . Dental amalgam ; q c . Composite resins ; q d . Acrylic resin .
We can appreciate that the wear-in phase :
q a . Does not include the wear generated during the initial stage ; q b . Does not truly reflect the wear of the material ; q c . Appears as a flattening of the wear curve ; q d . Has the same duration for all tested materials .
46 STOMA . EDUJ ( 2016 ) 3 ( 1 )