Creat membership Creat membership
Sign in

Forgot password?

Confirm
  • Forgot password?
    Sign Up
  • Confirm
    Sign In
Creat membership Creat membership
Sign in

Forgot password?

Confirm
  • Forgot password?
    Sign Up
  • Confirm
    Sign In
Collection
For ¥0.57 per day, unlimited downloads CREATE MEMBERSHIP Download

toTop

If you have any feedback, Please follow the official account to submit feedback.

Turn on your phone and scan

home > search >

A Novel Methodology to Evaluate the Use of an Ultrasonic Tip

Author:
Cloutier, David L.  Kulild, James C.  Walker, Mary P.  


Journal:
JOURNAL OF ENDODONTICS


Issue Date:
2011


Abstract(summary):

Introduction: The purpose of this in vitro investigation was to use a novel methodology to evaluate the use of an endodontic ultrasonic (US) tip. Methods: BUC 1 US tips (n = 10) were mounted to a testing apparatus that applied a linear movement of the US tip to dentin specimens with an axial force of 15 g. Instrumentation was activated for 20-second cycles up to a 2-minute baseline and continued for 10-minute intervals up to a defined inefficient/dropout point. Dentin cutting efficiency was measured by the change in weight of dentin specimens to the nearest 0.01 mg. A quantitative analysis was conducted on length and diameter of the US tips by using images taken at 15.625 magnification and 1000 pixels/cm (1 pixel = 0.01 mm) resolution. Weight of dentin specimens and images were captured at 2, 50, 100, 150, and 190 minutes of instrumentation. Results: There was no statistically significant difference in dentin removal between measurement times for any US tip specimen. There was a statistically significant difference in tip length over time (P = .002). Tukey post hoc analysis revealed that tip length decreased significantly at 2 minutes of instrumentation. Conclusions: Within the limits of this investigation, the BUC 1 US tip did not significantly decrease in efficiency between 2 and 190 minutes of use. The decrease in tip length was found to be significant at 2 minutes of instrumentation. Adding a linear movement, in addition to an axial force, for testing US tips will make future investigations more clinically relevant. (J Endod 2011;37:1264-1267)


Page:
1264---1267


VIEW PDF

The preview is over

If you wish to continue, please create your membership or download this.

Create Membership

Similar Literature

Submit Feedback

This function is a member function, members do not limit the number of downloads