Staff View: Influence of the Number of Scan Bodies on Full-Arch Implant Scanning: A Comparison of 2 vs 4 Implants

Influence of the Number of Scan Bodies on Full-Arch Implant Scanning: A Comparison of 2 vs 4 Implants

Accuracy is a necessity in implant impressions to fabricate accurately fitting implant -supported prostheses. This in vitro study aimed to explore the impact of the number of scan bodies on scanning quality by comparing scans of 2 vs 4 implants, and to determine if their accuracy and precision meets...

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Main Authors:	Abdelrehim, Aly, Salleh, Nosizana Mohd, Sofian, Hazrina, Sulaiman, Eshamsul
Format:	Article
Published:	American Academy of Implant Dentistry 2024
Subjects:	QA75 Electronic computers. Computer science RK Dentistry
Online Access:	http://eprints.um.edu.my/45337/ https://doi.org/10.1563/aaid-joi-D-23-00063
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spelling	my.um.eprints.453372024-10-10T08:16:26Z http://eprints.um.edu.my/45337/ Influence of the Number of Scan Bodies on Full-Arch Implant Scanning: A Comparison of 2 vs 4 Implants Abdelrehim, Aly Salleh, Nosizana Mohd Sofian, Hazrina Sulaiman, Eshamsul QA75 Electronic computers. Computer science RK Dentistry Accuracy is a necessity in implant impressions to fabricate accurately fitting implant -supported prostheses. This in vitro study aimed to explore the impact of the number of scan bodies on scanning quality by comparing scans of 2 vs 4 implants, and to determine if their accuracy and precision meets acceptable clinical threshold. Two mandibular edentulous models were used: one with 4 -parallel implants (4 -IM) and the other with 2 -parallel implants (2 -IM). Each model was scanned 10 times with an intraoral scanner, while reference scans were obtained with a high -precision laboratory scanner. The accuracy of test scans was evaluated by superimposing them onto reference scans and measuring 3D and angular deviations of the scan bodies. To assess the precision, the repeatability of the scans was analyzed by measuring the 3D SDs. Independent t test was used to compare angular deviations, the Mann -Whitney U test was used for 3D deviations and 3D SDs, and 1 sample t test was used for comparing means to the clinical threshold. Angular and 3D deviations were statistically not significant between the 2 groups (P = .054 and 0.143). 3D deviation values were higher than the 150 -mm threshold for 2 -IM (201 mm) and 4 -IM (290 mm); angular deviation in 2 -IM was 0.600 degrees and 0.885 degrees for 4 -IM. There was no statistically significant difference in the precision of scans between the 2 groups. (P = .161). Although scanning quality improved when 2 scan bodies were used, the difference was not statistically significant. Moreover, full -arch implant scanning did not meet acceptable levels of accuracy and precision. American Academy of Implant Dentistry 2024-04 Article PeerReviewed Abdelrehim, Aly and Salleh, Nosizana Mohd and Sofian, Hazrina and Sulaiman, Eshamsul (2024) Influence of the Number of Scan Bodies on Full-Arch Implant Scanning: A Comparison of 2 vs 4 Implants. Journal of Oral Implantology, 50 (2). pp. 104-110. ISSN 0160-6972, DOI https://doi.org/10.1563/aaid-joi-D-23-00063 <https://doi.org/10.1563/aaid-joi-D-23-00063>. https://doi.org/10.1563/aaid-joi-D-23-00063 10.1563/aaid-joi-D-23-00063
institution	Universiti Malaya
building	UM Library
collection	Institutional Repository
continent	Asia
country	Malaysia
content_provider	Universiti Malaya
content_source	UM Research Repository
url_provider	http://eprints.um.edu.my/
topic	QA75 Electronic computers. Computer science RK Dentistry
spellingShingle	QA75 Electronic computers. Computer science RK Dentistry Abdelrehim, Aly Salleh, Nosizana Mohd Sofian, Hazrina Sulaiman, Eshamsul Influence of the Number of Scan Bodies on Full-Arch Implant Scanning: A Comparison of 2 vs 4 Implants
description	Accuracy is a necessity in implant impressions to fabricate accurately fitting implant -supported prostheses. This in vitro study aimed to explore the impact of the number of scan bodies on scanning quality by comparing scans of 2 vs 4 implants, and to determine if their accuracy and precision meets acceptable clinical threshold. Two mandibular edentulous models were used: one with 4 -parallel implants (4 -IM) and the other with 2 -parallel implants (2 -IM). Each model was scanned 10 times with an intraoral scanner, while reference scans were obtained with a high -precision laboratory scanner. The accuracy of test scans was evaluated by superimposing them onto reference scans and measuring 3D and angular deviations of the scan bodies. To assess the precision, the repeatability of the scans was analyzed by measuring the 3D SDs. Independent t test was used to compare angular deviations, the Mann -Whitney U test was used for 3D deviations and 3D SDs, and 1 sample t test was used for comparing means to the clinical threshold. Angular and 3D deviations were statistically not significant between the 2 groups (P = .054 and 0.143). 3D deviation values were higher than the 150 -mm threshold for 2 -IM (201 mm) and 4 -IM (290 mm); angular deviation in 2 -IM was 0.600 degrees and 0.885 degrees for 4 -IM. There was no statistically significant difference in the precision of scans between the 2 groups. (P = .161). Although scanning quality improved when 2 scan bodies were used, the difference was not statistically significant. Moreover, full -arch implant scanning did not meet acceptable levels of accuracy and precision.
format	Article
author	Abdelrehim, Aly Salleh, Nosizana Mohd Sofian, Hazrina Sulaiman, Eshamsul
author_facet	Abdelrehim, Aly Salleh, Nosizana Mohd Sofian, Hazrina Sulaiman, Eshamsul
author_sort	Abdelrehim, Aly
title	Influence of the Number of Scan Bodies on Full-Arch Implant Scanning: A Comparison of 2 vs 4 Implants
title_short	Influence of the Number of Scan Bodies on Full-Arch Implant Scanning: A Comparison of 2 vs 4 Implants
title_full	Influence of the Number of Scan Bodies on Full-Arch Implant Scanning: A Comparison of 2 vs 4 Implants
title_fullStr	Influence of the Number of Scan Bodies on Full-Arch Implant Scanning: A Comparison of 2 vs 4 Implants
title_full_unstemmed	Influence of the Number of Scan Bodies on Full-Arch Implant Scanning: A Comparison of 2 vs 4 Implants
title_sort	influence of the number of scan bodies on full-arch implant scanning: a comparison of 2 vs 4 implants
publisher	American Academy of Implant Dentistry
publishDate	2024
url	http://eprints.um.edu.my/45337/ https://doi.org/10.1563/aaid-joi-D-23-00063
_version_	1814047543074488320
score	13.211869

Influence of the Number of Scan Bodies on Full-Arch Implant Scanning: A Comparison of 2 vs 4 Implants

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