In Vitro Comparison of Surface Roughness, Flexural, and Microtensile Strength of Various Glass-Ionomer-Based Materials and a New Alkasite Restorative Material
Citation
Kaptan A, Oznurhan F, Candan M. In Vitro Comparison of Surface Roughness, Flexural, and Microtensile Strength of Various Glass-Ionomer-Based Materials and a New Alkasite Restorative Material. Polymers (Basel). 2023 Jan 27;15(3):650. doi: 10.3390/polym15030650. PMID: 36771950; PMCID: PMC9920171.Abstract
Abstract: This study aims to evaluate the physical properties of Cention N and various glass-ionomerbased
materials in vitro. The groups were obtained as follows: Group 1 (LC-Cent): light-cured
Cention N; Group 2 (SC-Cent): self-cured Cention N; Group 3 (COMP): composite (3M Universal
Restorative 200); Group 4 (DYRA): compomer (Dyract XP); Group 5 (LINER): Glass Liner; Group 6
(FUJI): FujiII LC Capsule; and Group 7 (NOVA): Nova Glass LC. For the microtensile bond strength
( TBS) test, 21 extracted human molar teeth were used. The enamel of the teeth was removed, and
flat dentin surfaces were obtained. Materials were applied up to 3 mm, and sticks were obtained from
the teeth. Additionally, specimens were prepared, and their flexural strength and surface roughness
(Ra) were evaluated. Herein, data were recorded using SPSS 22.0, and the flexural strength, TBS, and
Ra were statistically analyzed. According to the surface roughness tests, the highest Ra values were
observed in Group 6 (FUJI) (0.33 0.1), whereas the lowest Ra values were observed in Group 2 (SCCent)
(0.17 0.04) (p < 0.05). The flexural strengths of the materials were compared, and the highest
value was obtained in Group 2 (SC-Cent) (86.32 15.37), whereas the lowest value was obtained in
Group 5 (LINER) (41.75 10.05) (p < 0.05). When the TBS of materials to teeth was evaluated, the
highest TBS was observed in Group 3 (COMP) (16.50 7.73) and Group 4 (DYRA) (16.36 4.64),
whereas the lowest TBS was found in Group 7 (NOVA) (9.88 1.87) (p < 0.05). According to the
TBS results of materials-to-materials bonding, both Group 2 (SC-Cent) and Group 1 (LC-Cent) made
the best bonding with Group 3 (COMP) (p < 0.05). It can be concluded that self-cured Cention N had
the highest flexural strength and lowest surface roughness of the seven materials tested. Although the
bond strength was statistically lower than conventional composites and compomers, it was similar
to resin-modified glass ionomer cements. Additionally, the best material-to-material bonding was
found between self-cured Cention N and conventional composites