Flexural strengths of reinforced denture base resins subjected to long-term water immersion

Figures & data

Figure 1. Schematics of specimens. (A) specimen without reinforcement, (B) specimen reinforced with metal wire reinforcement, (C) specimen reinforced with FRC reinforcement.

Figure 2. Representative load/deflection graph. PL: the load at the proportional limit, Max: the ultimate load.

Table 1. Mean and standard deviations (SD) of ultimate flexural strength and flexural strength at the proportional limit of the reinforced denture base resins after 50 h and 180 d water immersion (n = 10).

Reinforcement	Water immersion	Ultimate flexural strength (MPa); Mean (SD)	Flexural strength at proportional limit (MPa); Mean (SD)
None	50 h	112.5 (14.1)^b*	58.2 (3.4)^b
Metal	50 h	123.1 (12.8)^a,b	62.7 (5.2)^a,b
FRC	50 h	130.8 (16.3)^a,b	68.9 (4.4)^a
None	180 d	91.0 (18.9)	50.1 (5.6)
Metal	180 d	137.9 (25.7)^a	56.8 (7.6)^b
FRC	180 d	117.8 (19.2)^a,b	68.5 (12.8)^a

*,^a or ^b denotes groups that were not significantly different from each other (p > 0.05).