STATEMENT OF PROBLEM: Resin cements are widely used to cement intraradicular posts, but bond strength is significantly influenced by the technique and material used for cementation. PURPOSE: The purpose of this study was to evaluate the bond strength of 3 self-adhesive cements used to cement intraradicular glass fiber posts. The cements all required different application and handling techniques. MATERIAL AND METHODS:Forty-five human maxillary canines were selected and randomly divided into 3 groups n= 15 by drawing lots: Group BIS - Biscem, Group BRE - Breeze, and Group MAX - Maxcem. Each group was divided into 3 subgroups according to application and handling techniques: Sub-groupA - Automix/Point tip applicator, Sub-group L - Handmix/Lentulo, and Sub-group C - Handmix/Centrix. Cementation of the posts was performed according to the manufacturers' instructions. The push-out test was performed with a crosshead speed of 0.5 mm/min, and bond strength was expressed in megapascals. The results were evaluated by 2-way ANOVA and the all pairwise multiple comparison procedures (Tukey test) (α=.05). RESULTS: Breeze cement showed the highest average for the subgroups A, L, and C when compared to the Biscem cement and Maxcem Elite (P<.05). Statistically significant differences among the subgroups were only observed for Biscem. CONCLUSIONS: This study shows that application and handling techniques may influence the bond strength of different self-adhesive cements when used for intraradicular post cementation.
RCT Entities:
STATEMENT OF PROBLEM: Resin cements are widely used to cement intraradicular posts, but bond strength is significantly influenced by the technique and material used for cementation. PURPOSE: The purpose of this study was to evaluate the bond strength of 3 self-adhesive cements used to cement intraradicular glass fiber posts. The cements all required different application and handling techniques. MATERIAL AND METHODS: Forty-five human maxillary canines were selected and randomly divided into 3 groups n= 15 by drawing lots: Group BIS - Biscem, Group BRE - Breeze, and Group MAX - Maxcem. Each group was divided into 3 subgroups according to application and handling techniques: Sub-group A - Automix/Point tip applicator, Sub-group L - Handmix/Lentulo, and Sub-group C - Handmix/Centrix. Cementation of the posts was performed according to the manufacturers' instructions. The push-out test was performed with a crosshead speed of 0.5 mm/min, and bond strength was expressed in megapascals. The results were evaluated by 2-way ANOVA and the all pairwise multiple comparison procedures (Tukey test) (α=.05). RESULTS: Breeze cement showed the highest average for the subgroups A, L, and C when compared to the Biscem cement and Maxcem Elite (P<.05). Statistically significant differences among the subgroups were only observed for Biscem. CONCLUSIONS: This study shows that application and handling techniques may influence the bond strength of different self-adhesive cements when used for intraradicular post cementation.
Authors: Júlio C M Souza; Valter Fernandes; Ana Correia; Paulo Miller; Oscar Carvalho; Filipe Silva; Mutlu Özcan; Bruno Henriques Journal: Clin Oral Investig Date: 2021-10-28 Impact factor: 3.573
Authors: Jefferson Ricardo Pereira; Ricardo Abreu da Rosa; Marcus Vinícius Reis Só; Daniele Afonso; Milton Carlos Kuga; Heitor Marques Honório; Accácio Lins do Valle; Hugo Alberto Vidotti Journal: J Appl Oral Sci Date: 2014-07-04 Impact factor: 2.698