Effects of ultrasonic root end preparation on resected root surfaces: SEM evaluation

Silvio Taschieri, Tiziano Testori, Luca Francetti, Massimo Del Fabbro

Research output: Contribution to journalArticlepeer-review


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-FP and SS-HP group for both the number of cracks and the marginal quality.

Original languageEnglish
Pages (from-to)611-618
Number of pages8
JournalOral Surgery, Oral Medicine, Oral Pathology, Oral Radiology, and Endodontics
Issue number5
Publication statusPublished - Nov 2004

ASJC Scopus subject areas

  • Dentistry(all)
  • Pathology and Forensic Medicine
  • Radiology Nuclear Medicine and imaging
  • Surgery


Dive into the research topics of 'Effects of ultrasonic root end preparation on resected root surfaces: SEM evaluation'. Together they form a unique fingerprint.

Cite this