Scanning accuracy of bracket features and slot base angle in different bracket materials by four intraoral scanners: An in vitro study

Seon Hee Shin, Hyung Seog Yu, Jung Yul Cha, Jae Sung Kwon, Chung Ju Hwang

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

The accurate expression of bracket prescription is important for successful orthodontic treatment. The aim of this study was to evaluate the accuracy of digital scan images of brackets produced by four intraoral scanners (IOSs) when scanning the surface of the dental model attached with different bracket materials. Brackets made from stainless steel, polycrystalline alumina, composite, and composite/stainless steel slot were considered, which have been scanned from four different IOSs (Primescan, Trios, CS3600, and i500). SEM images were used as references. Each bracket axis was set in the reference scan image, and the axis was set identically by superimposing with the IOS image, and then only the brackets were divided and analyzed. One-way analysis of variance (ANOVA) was used to compare the differences. The difference between the manufacturer’s nominal torque and bracket slot base angle was 0.39 in SEM, 1.96 in Primescan, 2.04 in Trios, and 5.21 in CS3600 (p < 0.001). The parallelism, which is the difference between the upper and lower angles of the slot wall, was 0.48 in SEM, 7.00 in Primescan, 5.52 in Trios, 6.34 in CS3600, and 23.74 in i500 (p < 0.001). This study evaluated the accuracy of the bracket only, and it must be admitted that there is some error in recognizing slots through scanning in general.

Original languageEnglish
Article number365
Pages (from-to)1-14
Number of pages14
JournalMaterials
Volume14
Issue number2
DOIs
Publication statusPublished - 2021 Jan 2

Bibliographical note

Publisher Copyright:
© 2021 by the authors. Licensee MDPI, Basel, Switzerland.

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics

Fingerprint

Dive into the research topics of 'Scanning accuracy of bracket features and slot base angle in different bracket materials by four intraoral scanners: An in vitro study'. Together they form a unique fingerprint.

Cite this