J Korean Dent Sci.  2023 Dec;16(2):149-155. 10.5856/JKDS.2023.16.2.149.

Influence of Band and Loop Type Space Maintainer on Intraoral Scanning Accuracy of an Adjacent Tooth

• Ye JR
• Chae YK
• Lee KE
• Lee HS
• Choi SC
• Nam OH

• KMID: 2549609
• DOI: http://doi.org/10.5856/JKDS.2023.16.2.149

Abstract

Purpose
The purpose of this study was to evaluate whether the presence of a space maintainer affects the accuracy of an intraoral scanner.
Materials and Methods
The maxillary primary first molar typodont tooth was removed from the primary dentition typodont model and a band and loop type space maintainer was delivered. After the model was connected to a dental phantom, intraoral scan was performed using TRIOS 4 (3Shape A/S, Copenhagen, Denmark). The scan was repeated with the same technique without the space maintainer. Each scan was performed 10 times. All scan files into a GOM inspect 2018 software and evaluated the accuracy. The accuracy was evaluated on trueness and precision, and calculated using the root mean square value. Result: When there was a space maintainer in the oral cavity, the trueness value was 0.10±0.02 mm and the precision value was 0.15±0.03 mm. In the absence of the space maintainer, the trueness value was 0.12±0.03 mm and the precision value was 0.16±0.04 mm. There were no significant differences depending on the presence of a space maintainer (P>0.05).
Conclusion
Within the limits of this study, the accuracy of the intraoral scanner was not influenced by the presence of space maintainer.

Keyword

Children; Dimensional measurement accuracy; Space maintenance