• 1 School of Dental Sciences, Health Campus, Universiti Sains Malaysia, Kelantan, Malaysia
  • 2 Division of Clinical Dentistry (Prosthodontics), School of Dentistry, International Medical University, Jalan Jalil Perkasa-19, Bukit Jalil, 57000, Kuala Lumpur, Malaysia.
  • 3 Consultant Oral and Maxillofacial Surgeon, Prince Mutaib Bin Abdul Aziz Hospital, Ministry of Health, Al-Jouf, Kingdom of Saudi Arabia
  • 4 School of Electrical and Electronic Engineering, Universiti Sains Malaysia, Penang, Malaysia
  • 5 College of Dentistry, Jouf University, Sakaka, Kingdom of Saudi Arabia
Sci Rep, 2021 04 19;11(1):8469.
PMID: 33875672 DOI: 10.1038/s41598-021-87240-9


Palatal defects are rehabilitated by fabricating maxillofacial prostheses called obturators. The treatment incorporates taking deviously unpredictable impressions to facsimile the palatal defects into plaster casts for obturator fabrication in the dental laboratory. The casts are then digitally stored using expensive hardware to prevent physical damage or data loss and, when required, future obturators are digitally designed, and 3D printed. Our objective was to construct and validate an economic in-house smartphone-integrated stereophotogrammetry (SPINS) 3D scanner and to evaluate its accuracy in designing prosthetics using open source/free (OS/F) digital pipeline. Palatal defect models were scanned using SPINS and its accuracy was compared against the standard laser scanner for virtual area and volumetric parameters. SPINS derived 3D models were then used to design obturators by using (OS/F) software. The resultant obturators were virtually compared against standard medical software designs. There were no significant differences in any of the virtual parameters when evaluating the accuracy of both SPINS, as well as OS/F derived obturators. However, limitations in the design process resulted in minimal dissimilarities. With further improvements, SPINS based prosthetic rehabilitation could create a viable, low cost method for rural and developing health services to embrace maxillofacial record keeping and digitised prosthetic rehabilitation.

* Title and MeSH Headings from MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.