Yew Hin Beh1,2, Taseef Hasan Farook3, Nafij Bin Jamayet3, James Dudley4, Farah Rashid3, Aparna Barman3, Mohammad Khursheed Alam5. 1. Prosthodontic Unit, School of Dental Sciences, 65271Universiti Sains Malaysia, Kelantan, Malaysia. 2. Centre for Restorative Dentistry, Faculty of Dentistry, Universiti Kebangsaan Malaysia, Kuala Lumpur, Malaysia. 3. Maxillofacial Prosthetic Service, Prosthodontic Unit, School of Dental Sciences, 65271Universiti Sains Malaysia, Kota bharu, Kelantan, Malaysia. 4. Adelaide Dental School, 1066The University of Adelaide, South Australia, Australia. 5. College of Dentistry, Jouf University, Sakaka, KSA.
Abstract
OBJECTIVE: The virtual cone beam computed tomography-derived 3-dimensional model was compared with the scanned conventional model used in the fabrication of a palatal obturator for a patient with a large palatal defect. DESIGN: A digitally derived 3-dimensional maxillary model incorporating the palatal defect was generated from the patient's existing cone beam computerized tomography data and compared with the scanned cast from the conventional impression for linear dimensions, area, and volume. The digitally derived cast was 3-dimensionally printed and the obturator fabricated using traditional techniques. Similarly, an obturator was fabricated from the conventional cast and the fit of both final obturator bulbs were compared in vivo. RESULTS: The digitally derived model produced more accurate volumes and surface areas within the defect. The defect margins and peripheries were overestimated which was reflected clinically. CONCLUSION: The digitally derived model provided advantages in the fabrication of the palatal obturator; however, further clinical research is required to refine consistency.
OBJECTIVE: The virtual cone beam computed tomography-derived 3-dimensional model was compared with the scanned conventional model used in the fabrication of a palatal obturator for a patient with a large palatal defect. DESIGN: A digitally derived 3-dimensional maxillary model incorporating the palatal defect was generated from the patient's existing cone beam computerized tomography data and compared with the scanned cast from the conventional impression for linear dimensions, area, and volume. The digitally derived cast was 3-dimensionally printed and the obturator fabricated using traditional techniques. Similarly, an obturator was fabricated from the conventional cast and the fit of both final obturator bulbs were compared in vivo. RESULTS: The digitally derived model produced more accurate volumes and surface areas within the defect. The defect margins and peripheries were overestimated which was reflected clinically. CONCLUSION: The digitally derived model provided advantages in the fabrication of the palatal obturator; however, further clinical research is required to refine consistency.
Entities:
Keywords:
3D printing; bulb; digital workflow; maxillofacial prosthesis; obturator; palatal defect