REINFORCEMENT OF POLYMETHYLMETHACRYLATE (PMMA) RESIN WITH PERFORATED METAL PLATES
Jean-Francois Roulet
DDS, PhD, Prof hc, Professor
Director of Center for Dental Biomaterials
Department of Restorative Dental Sciences
College of Dentistry, University of Florida, Gainesville, FL, USA
CV
Jean-François Roulet, DDS, Dr med dent, PhD, is the former chair and current
professor of the Department of Restorative Dental Sciences at the University
of Florida. Dr Roulet has published more than 180 research papers as well as
reviews, book chapters, and books.
He also mentored more than 150 theses. He is a renowned international
lecturer with over 800 appearances to date.
Dr. Roulet is member of many professional organizations, has won numerous
awards, and holds four patents.
He was editor of The Journal of Adhesive Dentistry and Oral Health &
Preventative Dentistry. Since 1996 he is editor of Prophylaxe Impuls.
His areas of interest include minimally invasive dentistry, dental materials
(i.e., composites and ceramics), adhesive dentistry, esthetic dentistry, and
application concepts in preventive dentistry.
Questions
Perforated thin metal plates incorporated into a PMMA based resin:
q a.
q b.
q c.
q d.
Are more resistant to fracture;
Are easily fractured;
Only priming can avoid fracturing;
The grid does not affect resistance to fracture.
The Flexural Modulus of the plate is affected by:
q a.
q b.
q c.
q d.
Only the thickness of the plate;
The quality of the resin and of the polymerization method;
Priming the grid and the type of resin employed;
Not affected by any factor.
What categories of resins are recommended for the prosthetic plate?
q a.
q b.
q c.
q d.
Simple thermopolymerizable resins;
Simple baropolymerizable resins;
Injectable flexile resins;
(High impact) injectable baropolymerizable resins.
When is the ideal prosthetic plate obtained?
q a.
q b.
q c.
q d.
When the metal grid strengthener is used;
When the grid is no