An Evaluation of the Accuracy and Precision of Ceramic Orthodontic Bracket Slot Dimensions Utilizing Micro-Computed Tomography (Micro-CT)

This study’s aim is to determine the accuracy and precision of bracket slot height in MBT 0.022″ ceramic brackets. Five brackets from 11 different systems (n = 55) were scanned using micro-computed tomography (micro-CT). The was measured at face (external) base (internal) slot. Data analyzed a One-Sample t-Test, Paired t-Test. lowest external seen OrthoCare Purity® 0.02264″ (2.9%), greatest TOC Ghost Advanced® 0.02736″ (24.4%). internal Forestadent Glam® 0.02020″ (−8.2%), 0.2547″ (15.8%). measurements corresponded most closely with expected measurements. TP InVu® found be precise for (range 0.00043″) American Orthodontics 20/40® 0.00028″). In assessing geometry, all demonstrated higher mean compared bracket. Orthodontic slots are larger than parallelism not observed any brand tested. Similarly, dimensions imprecise where two ‘identical’ have sizes. clinician should, therefore, assume that play likely expected.