RT Journal Article
T1 Sealing and dentin bond strength of adhesive systems in selected areas of perfused teeth
A1 Escribano, Nuria Isabel
A1 Del-Nero Beneitez, María Olga
A1 Macorra García, José Carlos de la
AB Objectives: (1) Test the sealing capacity and tensile strength of various adhesive systems: Scotch Bond 1 (Single Bond in USA)(SB1) + Z100, Syntac Sprint (SYN) + Tetric Ceram, Prime and Bond 2.1 (PB21) + TPH Spectrum, F2000 (Adhesive 1 Compomer) (F2000) and Optibond Solo (OPT) + Prodigy, to perfused teeth (30 cm distilled H2O), in select areas. (2) Determine the relationship between sealingability and size of adhesive area (BA) with tensile strength (TS).Methods: Segments of human third molars (n=67) sealed with amalgam on their coronal side were connected to a perfusion system (30 cm distilled H2O), to measure the basal permeability. Access cavities were drilled through the amalgam to expose dentin (area range: 8.7±20.8 mm2) and measure the permeability of that area. Cavities were sealed with one of the test materials and permeability measured prior to tensile testing. The percentage of decrease in permeability (PPD) that occurred with the different combinations of materials was also measured.Results. Tensile strength: there were no statistically signi®cant differences among groups. Permeability: ANOVA showed that there were statistically signi®cant differences in the mean % decrease in permeability (PPD) among groups (p= 0:018): Student-Newman-Keuls test (p=0:05) detected that the mean PPD of F2000 ranked statistically higher than that of SB1. Relationship among variables: a linearcorrelation was found defined by the formula TS= 7:47+ 0:008·PPD - 0:23·BA; with a significance of the model p=0.0097.Significance: None of the materials studied reduced permeability up to 100%. They all produced low tensile bond strengths (maximum mean value of groups: 5.51 MPa (OPT)).
YR 2001
FD 2001
LK https://hdl.handle.net/20.500.14352/60353
UL https://hdl.handle.net/20.500.14352/60353
LA eng
DS Docta Complutense
RD 2 may 2024