Sökning: id:"swepub:oai:DiVA.org:uu-490180" >
In vivo trueness an...
In vivo trueness and precision of full-arch implant scans using intraoral scanners with three different acquisition protocols
-
- Nedelcu, Robert (författare)
- Uppsala universitet,Odontologi & Maxillofacial kirurgi
-
Olsson, Pontus (författare)
-
Thulin, Måns (författare)
-
visa fler...
-
- Nyström, Ingela, 1967- (författare)
- Uppsala universitet,Bildanalys och människa-datorinteraktion
-
- Thor, Andreas (författare)
- Uppsala universitet,Odontologi & Maxillofacial kirurgi,Oral & Maxillofacial Surgery
-
visa färre...
-
(creator_code:org_t)
- Elsevier, 2023
- 2023
- Engelska.
-
Ingår i: Journal of Dentistry. - : Elsevier. - 0300-5712 .- 1879-176X. ; 128, s. 104308-104308
- Relaterad länk:
-
https://doi.org/10.1...
-
visa fler...
-
https://uu.diva-port... (primary) (Raw object)
-
https://urn.kb.se/re...
-
https://doi.org/10.1...
-
visa färre...
Abstract
Ämnesord
Stäng
- Objectives: To evaluate an in situ reference acquisition method for implant positions in complete edentulous maxillae using an industrial scanner and allowing for in vivo trueness analysis of the restorative workflow. To assess in vivo trueness and precision of intraoral scanners (IOS) using different acquisition protocols. Furthermore, to compare IOS trueness with impression-based models and implant-supported fixed dentures (IFD) in a parallel study on the same cohort using the same in situ reference scan.Methods: Six scan-bodies mounted to maxillary implants in five subjects were reference scanned (REF) using an industrial scanner. Subjects were scanned with IOS three times using three different protocols: control (CT), dental floss assisted (DF), and acrylic splint (SP). CAD-files of scan-bodies with inter-aligned analogues were geometry-aligned to REF, and SP. Scan-bodies were aligned to CT and DF in proprietary dental laboratory software and exported with analogue positions. Resulting six CAD-analogues per scan were Globally Aligned using a consistent geometry-based alignment. Deviations were computed after a Reference Point System Alignment at the implant/prosthetic platform for Cartesian axes with a linear Resultant.Results: Resultant trueness was CT: 41±11 μm, DF: 49±22 μm, SP: 55±8 μm. Resultant precision was CT: 48±7μm, DF: 50±7 μm, SP: 45±6 μmConclusions: This method is applicable for assessing trueness of maxillary full-arch implant scans in vivo. The CTprotocol was most accurate. CT trueness showed no difference to digitised impression-based models in parallelstudy. CT was more accurate than IFD in a parallel study. CT displayed similar numerical trueness as existing invitro studies.Critical significance: Using IOS to acquire full-arch implant scans is controversial. The modified protocol in thispilot shows promising results in the maxilla where great care was taken to manage non-attached tissues when amodified scanning pattern was used. However, other IOS may show varying results in vivo. A completed scan doesnot necessarily equate to an accurate scan.
Ämnesord
- MEDICIN OCH HÄLSOVETENSKAP -- Klinisk medicin -- Odontologi (hsv//swe)
- MEDICAL AND HEALTH SCIENCES -- Clinical Medicine -- Dentistry (hsv//eng)
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
Hitta via bibliotek
Till lärosätets databas