Abstract:
AIM: This study aimed to assess the effect of different surface treatments on the surface roughness and flexure
properties of glass fiber posts “GFPs.”
MATERIALS AND METHODS: A total of 40 GFPs were divided into four groups (n = 10): GC – no surface treatment
(control), GSB – sandblasted, GHF – hydrofluoric acid etched, and GL – Er: YAG laser irradiated. Surface roughness
was detected using surface profilometer and the 3-points bending flexural test measured flexural strength and elastic
modulus.
RESULTS: GSB showed the highest mean roughness followed by GHF, then GL, while GC had lowest roughness
mean value. The 3 points bending test results were calculated and recorded, GSB exhibited the highest flexure stress
(MPa) compared to GHF and GL. Modulus of elasticity (GPa) showed significant differences between the tested
groups, GSB showed the highest modulus of elasticity compared to GHF and GL, while GC showed insignificant
differences with all tested groups.
CONCLUSION: Different surface treatments postulated in this study showed alternations of GFPs surfaces without
jeopardizing the mechanical properties of GFPs.
