Statistical Comparison of the Hardness and Scratch-Resistance of the PMMA Polymers Used in Orthodontic Appliances
Ładowanie...
Data
2020
Inny tytuł
Typ
Artykuł recenzyjny
Redaktor
dc.contributor.advisor
Dyscyplina PBN
Informatyka techniczna i telekomunikacja
Czasopismo lub seria
Advances in Science and Technology Research Journal
ISSN
2080-4075
2299-8624
2299-8624
ISBN
DOI
10.12913/22998624/127437
Strona internetowa
Wydawca
Wydawca
Wydanie
Numer
Strony od-do
Tytuł monografii
item.page.defence
Tytuł tomu
Opis
Rodzaj licencji
Abstrakt (en)
The paper presents the studies and results of the Shore hardness and scratch test of polymer materials used in
medical devices. Polymers of organic PMMA (poly(methyl methacrylate)) origin for the manufacture of orth odontic appliances were tested. Samples of test materials differed in manufacturing technology. The surface
functional properties of four materials were compared. Hardness tests were performed with the Shore D hard ness test method. The scratch test was done with a Rockwell diamond cone indenter. The hardness was also
calculated from the scratch test. Shore’s highest hardness was demonstrated in 1A material. But the differences
in Shore’s hardness were small. Larger differences between the tested materials were shown in the scratch test
than in the Shore hardness test. The lowest residual scratch depth (Rd) was obtained for 1A material. 3A mate rial had the highest scratch hardness.