Three-Dimensional Analysis of Dental Models Produced from Intraoral Scanning versus the Conventional Alginate Impression Method
https://doi.org/10.21315/aos2025.2001.OA02
- Author:
Nurul Aida Zailan
1
;
Matheel Al-Rawas
2
;
Adella Syvia Maharani
3
;
Sri Budi Barunawati
3
;
Johari Yap Abdullah
4
;
Johari Yap Abdullah
5
;
Mohammad Khursheed Alam
6
;
Mohammad Khursheed Alam
5
;
Mohammad Khursheed Alam
7
Author Information
1. School of Dental Sciences, Universiti Sains Malaysia, 16150 Kubang Kerian, Kelantan, Malaysia
2. Prosthodontic Unit, School of Dental Sciences, Universiti Sains Malaysia, 16150 Kubang Kerian, Kelantan, Malaysia
3. Department of Prosthodontics, Faculty of Dentistry, Universitas Gadjah Mada, Yogyakarta 55281, Indonesia
4. Craniofacial Imaging Laboratory, School of Dental Sciences, Universiti Sains Malaysia, 16150 Kubang Kerian, Kelantan, Malaysia
5. Dental Research Unit, Center for Transdisciplinary Research (CFTR), Saveetha Dental College, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai 602105, India
6. Preventive Dentistry Department, College of Dentistry, Jouf University, Sakaka 72345, Saudi Arabia
7. Department of Public Health, Faculty of Allied Health Sciences, Daffodil International University, 1207 Dhaka, Bangladesh
- Publication Type:Journal Article
- Keywords:
3D superimposition;
accuracy;
conventional impression;
intraoral scanning
- From:
Archives of Orofacial Sciences
2025;20(1):17-28
- CountryMalaysia
- Language:English
-
Abstract:
Three-Dimensional Analysis of Dental Models Produced from Intraoral Scanning versus the Conventional Alginate Impression Method:Impression-making plays an important role in dentistry, where records of the oral cavity are needed
to provide an optimum treatment plan for the patient. In this study, we utilised both the conventional
impression method and the intraoral scanner (IOS) to make a comparison on the accuracy of the
resulting oral cavity imprint using three-dimensional (3D) superimposition. In this study, a total of 18
participants were involved. Alginate impressions were made in a stock maxillary tray and poured with
type III dental stone. The models were then scanned using IOS to generate virtual dental models where digital analysis can be made. For the IOS method, the scanning was done directly on the patient’s oral cavity by the same operator. Meshmixer software was utilised to convert the virtual models into a Standard Tessellation Language file, and then CloudCompare software program was selected to evaluate the volume, surface area, Dice similarity coefficient (DSC) and Hausdorff distance (HD) of the dental models produced from both methods. Statistical analyses were carried out using an independent t-test. It was revealed that the p-value of area and volume for both methods is > 0.05, which shows no significant differences. Besides, the mean and standard deviation for the HD were 0.02 and 0.01, respectively, which shows minimal differences between the two datasets. The mean DSC was also 0.9, which shows close to 100% overlap. These findings significantly indicate that conventional impression and IOS have comparable accuracy and are both reliable for impression-making.
- Full text:202606072233043011Three-Dimensional Analysis of Dental Models.pdf
