The Influence of Polymerization Type and Reinforcement Method on Flexural Strength of Acrylic Resin

Table 2

Flexural strength means and standard deviations (MPa) for different polymerization and reinforcement methods.

Groups	Mean (SD)
	Self-polymerized (SP)	Heat-polymerized (HP)
Unidirectional glass fiber (Uni)	241.71 (67.77)^Aa	215.14 (67.60)^Aba
Short glass fiber (Short)	156.31 (28.76)^BCDa	198.44 (95.27)^ABCa
Unidirectional and short glass fiber (Uni-Short)	221.06 (71.97)^Aa	189.56 (92.27)^ABCa
Industrialized glass fiber (Ind)	215.61 (46.59)^Aba	268.93 (105.65)^Aa
Thermoplastic resin (Tpl)	132.51 (20.21)^CDa	161.32 (62.51)^CDa
Steel wire (SW)	190.51 (31.49)^ABCa	106.69 (28.7)^CDb
Control	101.47 (19.79)^Da	93.39 (39.61)^Da

(i) Different capital letters mean significant differences within the same acrylic resin (vertical comparison only).
(ii) Different lowercase letters mean significant differences within the same reinforcement method (horizontal comparison only).