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논문 기본 정보

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학술저널
저자정보
Dina Mohamed Ahmed Elawady (Department of Prosthodontics, Faculty of Dentistry, MSA University, Giza, Egypt) Wafaa Ibrahim Ibrahim (Faculty of Oral and Dental Medicine, Delta University for Science and Technology, Dakahlia, Egypt) Radwa Gamal Ghanem (Department of Prosthodontics, Faculty of Dentistry, Ahram Canadian University, Giza, Egypt) Reham Bassuni Osman (Department of Prosthodontics, Faculty of Dentistry, Cairo University, Giza, Egypt)
저널정보
대한치과보철학회 The Journal of Advanced of Prosthodontics The Journal of Advanced of Prosthodontics Vol.16 No.4
발행연도
2024.8
수록면
201 - 211 (11page)
DOI
https://doi.org/10.4047/jap.2024.16.4.201

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Purpose. The aim of this prospective clinical study was to compare the influence of palatal vault forms on accuracy and speed of intraoral (IO) scans in completely edentulous cases. Materials and methods. Based on the palatal vault form, participants were divided into three equal groups (n = 10 each); Class I: moderate; Class II: deep; Class III: flat palatal vault. A reference model was created for each patient using polyvinylsiloxane impression material. The poured models were digitized using an extraoral scanner. The resultant data were imported as a solid CAD file into 3D analysis software (GOM Inspect 2018; Gom GmbH, Braunschweig, Germany) and aligned using the software’s coordinate system to determine its X, Y, and Z axes. Five digital impressions (DIs) of maxilla were captured for each patient using an intraoral scanner (TRIOS; 3Shape A/S, Copenhagen, Denmark) and the resultant Standard Tessellation Language (STL) scan files served as test models. Trueness was evaluated by calculating arithmetic mean deviation (AMD) of the vault area between reference and test files while precision was evaluated by calculating AMD between captured scans to measure repeatability of scan acquisition. The scan time taken for each participant was also recorded. Results. There was no significant difference in trueness and precision among the groups (P = .806 and .950, respectively). Average scan time for Class I and III palatal vaults was 1 min 13 seconds and 1 min 37 seconds, respectively, while class II deep palatal vaults showed the highest scan time of 5 mins. Conclusion. Palatal vault form in edentulous cases has an influence on scan time. However, it does not have a substantial impact on the accuracy of the acquired scans.

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