IADR Abstract Archives
Does Atmospheric-Cold-Plasma Affect the bond-strength of AH-Plus and Endosequence-BC Sealers?
Objectives: Aim of this in-vitro study was to evaluate the effect of atmospheric cold plasma on the push-out bond strength of resin based and calcium silicate based root canal sealers.
Methods: Forty-eight mandibular premolar teeth were selected for this study and teeth were decoronated. Root canals were prepared with large Waveone-Gold rotary files. Final irrigation was performed with 3-ml of 17%EDTA, 5.25% NaOCl and distilled water. Specimens were divided into four experimental groups according to sealer and atmospheric-cold-plasma application (n=10). G1: the root canals were filled with AH-Plus, G2: the root canals were filled with AH-Plus after atmospheric-cold-plasma application, G3: the root canals were filled with Endosequence-BC, G4: the root canals were filled with Endosequence-BC after atmospheric-cold-plasma application. Cold lateral-condensation technique was used to fill root canals. After 7 days the roots were embedded vertically in orthodontic resin after 2-weeks and sectioned horizontally at two different levels (middle [m], coronal[c]) to obtain 1±0.1mm- thick slices. Push-out test was carried out using universal testing machine. The obtained data were divided by the adhesion surface area to calculate the bond strength in megapascals(MPa). Kruskall-Wallis and T-test were used for the statistical analysis (P=0.05).
Results: There was a statistically significant difference between G1c, G2c, G3c and G4c (P<0.05). G4c showed higher push-out bond strength than G1c and G2c. Difference between G1m, G2m, G3m and G4m was statistically significant and G4m had the highest bond strength (P<0.05). There was no statistical difference between G1c and G1m or G3c and G3m or G4c and G4m(P>0.05). G2c showed statistically higher bond strength than G2m (P<0.05).
Conclusions: The use of atmospheric-cold-plasma did not influence the push-out bond strength of AH-Plus. Endosequence-BC sealer showed better bond strength than AH-Plus after atmospheric-cold-plasma application. After atmospheric-cold-plasma application, the bond strength of AH-Plus was higher at coronal than middle level.
Methods: Forty-eight mandibular premolar teeth were selected for this study and teeth were decoronated. Root canals were prepared with large Waveone-Gold rotary files. Final irrigation was performed with 3-ml of 17%EDTA, 5.25% NaOCl and distilled water. Specimens were divided into four experimental groups according to sealer and atmospheric-cold-plasma application (n=10). G1: the root canals were filled with AH-Plus, G2: the root canals were filled with AH-Plus after atmospheric-cold-plasma application, G3: the root canals were filled with Endosequence-BC, G4: the root canals were filled with Endosequence-BC after atmospheric-cold-plasma application. Cold lateral-condensation technique was used to fill root canals. After 7 days the roots were embedded vertically in orthodontic resin after 2-weeks and sectioned horizontally at two different levels (middle [m], coronal[c]) to obtain 1±0.1mm- thick slices. Push-out test was carried out using universal testing machine. The obtained data were divided by the adhesion surface area to calculate the bond strength in megapascals(MPa). Kruskall-Wallis and T-test were used for the statistical analysis (P=0.05).
Results: There was a statistically significant difference between G1c, G2c, G3c and G4c (P<0.05). G4c showed higher push-out bond strength than G1c and G2c. Difference between G1m, G2m, G3m and G4m was statistically significant and G4m had the highest bond strength (P<0.05). There was no statistical difference between G1c and G1m or G3c and G3m or G4c and G4m(P>0.05). G2c showed statistically higher bond strength than G2m (P<0.05).
Conclusions: The use of atmospheric-cold-plasma did not influence the push-out bond strength of AH-Plus. Endosequence-BC sealer showed better bond strength than AH-Plus after atmospheric-cold-plasma application. After atmospheric-cold-plasma application, the bond strength of AH-Plus was higher at coronal than middle level.