The Mechanical Properties of a Poly(methyl methacrylate) Denture Base Material Modified with Dimethyl Itaconate and Di-n-butyl Itaconate

Table 3

Ultimate tensile strength (), elongation at break (), Shore D hardness, and Charpy impact strength of PMMA denture base materials modified with DMI and DBI.

Sample	, MPa		Shore D	Charpy, J/cm^2
PMMA	63.8	6.18	96.0	0.315
2.5 DMI	61.8	5.21	96.3	0.317
5.0 DMI	58.1	4.91	97.0	0.307
7.5 DMI	55.8	4.43	96.1	0.301
10 DMI	52.7	5.08	94.9	0.294
2.5 DBI	58.5	5.23	91.5	0.309
5.0 DBI	56.3	4.7	95.5	0.295
7.5 DBI	54.9	4.71	94.8	0.281
10 DBI	54.2	6.26	95.1	0.268