Objective: The purpose of this study was to investigate the in vitro effect of ultrasonic retrotips on root end surfaces. Study design: Root end resection was performed on 45 single-root teeth endodontically treated after extraction. Setting the ultrasonic device at full power, a retrograde cavity was made by a stainless steel tip in 9 specimens (SS-FP). In another 9 samples a diamond tip was used (D-FP). Setting the intensity of the ultrasonic device at half power, 9 specimens were treated using stainless steel tips (SS-HP) and 9 using diamond tip (D-HP). Nine teeth were only apically resected and used as controls. Histologic serial sections were examined by scanning electron microsope to assess the number of root-face cracking, the marginal quality, and the crack type. Results: No significant difference between diamond and stainless steel groups was found at a given power setting. Significant differences were found between SS-FPand SS-HP group for both the number of cracks and the marginal quality.
Effects of ultrasonic root end preparation on resected root surfaces : SEM evaluation / S.L.M. Taschieri, T. Testori, L.A. Francetti, M. Del Fabbro. - In: ORAL SURGERY ORAL MEDICINE ORAL PATHOLOGY ORAL RADIOLOGY AND ENDODONTICS. - ISSN 1079-2104. - 98:5(2004 Nov), pp. 611-618. [10.1016/j.tripleo.2004.04.004]
Effects of ultrasonic root end preparation on resected root surfaces : SEM evaluation
S.L.M. TaschieriPrimo
;L.A. Francetti;M. Del FabbroUltimo
2004
Abstract
Objective: The purpose of this study was to investigate the in vitro effect of ultrasonic retrotips on root end surfaces. Study design: Root end resection was performed on 45 single-root teeth endodontically treated after extraction. Setting the ultrasonic device at full power, a retrograde cavity was made by a stainless steel tip in 9 specimens (SS-FP). In another 9 samples a diamond tip was used (D-FP). Setting the intensity of the ultrasonic device at half power, 9 specimens were treated using stainless steel tips (SS-HP) and 9 using diamond tip (D-HP). Nine teeth were only apically resected and used as controls. Histologic serial sections were examined by scanning electron microsope to assess the number of root-face cracking, the marginal quality, and the crack type. Results: No significant difference between diamond and stainless steel groups was found at a given power setting. Significant differences were found between SS-FPand SS-HP group for both the number of cracks and the marginal quality.Pubblicazioni consigliate
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