Quantification of Structure Loss from Diamond Burs after Simulated Clinical Use
Abstract
Introduction: In the past 10 years, the U.S. Food and Drug Administration (FDA) has advocated for the use of single-use diamond burs over multi-use (i.e., reprocessable) diamond burs. There is a considerable knowledge gap regarding single-use bur quality, wear characteristics, and patient safety. Surveys of private practice dentists have indicated that many clinicians continue to re-use burs (including single-use burs),despite federal recommendations. Objective: The purpose of this observational in-vitro study was to quantify the amount of structure loss (metal and diamond particles) from single-use and multi-use diamond burs and to compare surface characteristics following simulated clinical use. Methods: Four types of medium-grit round-end chamfer burs were selected, including three single-use types and one multi-use type (n = 80). Initial masses (mg) and digital optical light microscopic images (pre) were obtained. Each bur was placed in a mounted handpiece, which cut into a simulated dentin substrate for 5minutes using a standardized force generation apparatus under consistent speed (40,000RPMs), force (1.0 N), and water spray (25 mL/min). Digital microscopic images (post) were obtained immediately following preparation. All burs were steam cleaned for 15 seconds, placed in an ultrasonic cleaner for 10 minutes, and dried overnight. Final mass for each bur was recorded and post-cutting/post-cleaning digital microscopic images (final) were captured. Results: A one-way analysis of variance (ANOVA) was used to compare mean mass change (pre- vs post-cutting). There was no significant difference in mean mass loss between groups (p =.351, alpha = 0.05). Minimal post-cutting damage and wear patterns were observed across all groups. Conclusions: The quality of single-use burs is comparable to that of multi-use burs. Loss of metal/diamond particles from single use diamond burs following tooth preparation is minimal and is considered safe in normal patient care settings.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 01, 2023
- Accession Number
- AD1222398
Entities
People
- Ian W. Robinson
Organizations
- Uniformed Services University of the Health Sciences