Akademik Veri Yönetim Sistemi
IADR/Pan European Region CONGRESS, Dubrovnik, Hırvatistan, 10 - 13 Eylül 2014, ss.29
Objective:
The aim of this study was to compare the effects of various irrigation protocols (Er;CR:YSGG laser, NaOCl, CHX) of post spaces on push-out bond strength of fiber posts.
Method:
Fifty human maxillary anterior teeth were cut off at cementoenamel junction at 14 mm length. Following root canal treatments post spaces were prepared. The teeth were divided into 5 groups (n=10) according to the protocol that applied into the post space. Group 1: distilled water (control), Group 2: 5% NaOCl, Group 3: 2 % CHX, Group 4: Er:Cr: YSGG laser (approximately 7 sc, 1.5 W 20 Hz. 85 air, 75 water, 4times) Group 5: Er:Cr:YSGG laser (approximately 7 sc, 1.25 W 50 Hz. 34 air, 24 water, 4 times) . Fiber posts were cemented with Panavia 2.0. Three slices were obtained from each specimen (coronal, middle and apical) and push out test was performed. The results were transformed MPa and Kruskall Wallis test were used for the statistical analysis.
Result:
For the coronal specimens groups, push-out test results showed statistically significant differences. The highest values was in group 1 (8,51+5,66 MPa) and the lowest values was in group 5 (3,89+3,45MPa). The middle specimens groups also showed statistically significant differences. The group 1 (9,18+2,77 MPa) had the highest results and the group 2 (2,38+0,94 MPa) was the lowest. In the apical part groups, there was no statistically significant differences. The highest values was in group 1 (13,22+5,23 MPa) and the lowest values group was group 5 (5,72+4,79 MPa).
Conclusion:
All surface treatment procedures decreases push out bond strength of fiber posts. Root canal surface irradiation using Er:Cr;YSGG laser did not have a positive effect on the retention of fiber posts.