[Research on different soft liner/base resin thickness ratios and fracture behavior of denture base].
Six groups of soft liner/base resin were made into standard test samples of 60.0 mm x 25.0 mm x 3.0 mm, with different soft lining materials/base resin ratios of 0: 3.0, 0.5: 2.5, 1.0: 2.0, 1.5: 1.5, 2.0: 1.0, 2.5: 0.5. The yield strength and resilience of each group were tested by universal testing machine. We found that when the thickness of soft liner increased, the yield strength of samples was reducing, whereas the resilience was enhancing. The change of yield strength and resilience became stabilized between the ratio of 1.5: 1.5 to 2.03: 1.0. We concluded that, under this testing condition, the thickness of soft liner should not exceed 2.0 mm, and we suggested that the ratio of soft liner/base resin should be controlled within the scope of 1/1 to 2/1 according to the whole base thickness.
Yang
Zhun
Z
Department of Prosthodontics, West China College of Stomatology, Sichuan University, Chengdu 610041, China.
Du
Li
L
Zhou
Mi
M
Zhong
Xiaojun
X
D000180:Acrylic Resins / Q000737:chemistry*; D001840:Dental Bonding; D003819:Denture Bases; D003822:Denture Liners; D003778:Dentures; D006801:Humans; D008422:Materials Testing; D013314:Stress, Mechanical; D013499:Surface Properties; D013718:Tensile Strength
D000180:Acrylic Resins