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)