Prosthetic rehabilitation of severely atrophic ridges has always been an ordeal for the clinician due to decreased support, stability and retention. Because of severe resorption the restorative space between maxillary and mandibular residual ridges is increased. Rehabilitation in such cases may result in increased height and weight of the prosthesis further compromising its retention and stability. This in turn overloads the underlying hard and soft tissues exacerbating ridge resorption so, in order to break this vicious cycle, the weight of the prosthesis needs to be reduced which can be achieved by making hollow prosthesis. This article describes a novel technique of fabricating a hollow maxillary complete denture.
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http://dx.doi.org/10.7860/JCDR/2016/20383.8264 | DOI Listing |
Bull Math Biol
October 2024
Department of Applied Mathematics and Theoretical Physics, University of Cambridge, Cambridge, CB3 0WA, UK.
The paranasal sinuses are a group of hollow spaces within the human skull, surrounding the nose. They are lined with an epithelium that contains mucus-producing cells and tiny hairlike active appendages called cilia. The cilia beat constantly to sweep mucus out of the sinus into the nasal cavity, thus maintaining a clean mucus layer within the sinuses.
View Article and Find Full Text PDFJ Prosthet Dent
August 2024
Associate Professor, Department of Prosthetic Dental Sciences, College of Dentistry, King Saud University, Riyadh, Saudi Arabia. Electronic address:
Statement Of Problem: Evidence is lacking on the influence of different designs of bulb support structures on the accuracy of 3-dimensional (3D) printed obturators.
Purpose: The purpose of this in vitro study was to evaluate the influence of various infill designs (hollow, honeycomb, and gyroid) for the bulb of an obturator on the accuracy and weight of digital light projection (DLP) 3D printed maxillary obturators.
Material And Methods: A maxillary obturator was virtually designed and used to obtain 3 digital reference files which were defined based on the design of the infill support structure within the bulb: hollow, honeycomb, and gyroid.
J Prosthet Dent
August 2024
Senior Lecturer, Planning and Management in Dental Clinics, Stomatology Area, Department of Surgery and Medical-Surgery Specialities, Digital Dentistry Unit of the School of Dentistry, Faculty of Medicine and Dentistry, University of Santiago de Compostela (USC), Santiago de Compostela, Spain.
Statement Of Problem: Diagnostic casts can incorporate different base designs and be manufactured using different vat-polymerization technologies. However, the influence of the interrelation between the base design and the 3D printing technology on the casts' final accuracy remains unclear.
Purpose: The purpose of this in vitro study was to assess the influence of different base designs of 3D printed casts on the accuracy of 2 vat-polymerization technologies.
BMC Oral Health
April 2024
Dental Intern, King Khalid University, Abha, Saudi Arabia.
Background: Dental casts made utilising digital workflow are becoming more common because to their speed and cost savings. However, studies on their dimensional accuracy over time with diverse designs are missing.
Objective: The aim of this in vitro study was to assess the dimensional stability of 3D-printed edentulous and fully dentate hollowed maxillary models with 50-micrometer resolution over 1 day, 14 days, and 28 days using surface matching software.
J Prosthet Dent
March 2024
Professor, Division of Prosthodontics, Department of Restorative Dental Sciences, University of Florida College of Dentistry, Gainesville, Fla; Associate Dean, Clinical Affairs and Quality, University of Florida College of Dentistry, Gainesville, Fla. Electronic address:
The replacement of an obturator prosthesis using conventional methods has multiple issues. Standard tessellation language files generated from the superimposition of an accurate intraoral scanning of the maxillary defect and direct data acquisition of the existing hollow bulb obturator can facilitate the precise design of the prosthesis, requiring only minor adjustments. Rapid prototyping manufacturing techniques seem to ensure precise control of the integrity of the prosthetic component completion.
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