We describe the case of a 77 year-old Japanese woman who was referred to the Department of Oral and Maxillofacial Surgery at Tokyo Women's Medical University Hospital with symptoms of spontaneous intraoral pain and dysphagia evoked by accidental alkaline (calcium oxide) ingestion. The stomach and esophagus were examined under endoscopy, but no evidence of burns or ulceration associated with the calcium oxide was apparent in the upper gastrointestinal tract. Oral care, antibacterial therapy (cefmetazole sodium) and nutritional management were performed after hospitalization. Mucosal erosions, dysphagia and pneumonia were almost resolved after 16 days of oral care and antibacterial treatment. Re-burn of the oral mucosa associated with accidental ingestion was not reported after discharge. Oral management may have potential to improve the management of intraoral chemical burns, but symptomatic treatment remains the only strategy for burn management. Accidental ingestion of chemicals by patients with impaired cognition may result in dire consequences and prevention is thus more important than burn management.
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Dent J (Basel)
December 2024
Department of Prosthodontics, University of Rennes, 35043 Rennes, France.
The present article describes a step-by-step maximally digitalized workflow protocol with computer-aided design and computer-aided manufacturing (CAD/CAM) in partial-arch edentulous patients rehabilitated with fixed dental prostheses and removable partial dentures (FDPs and RPDs). Facial digitalization, intraoral scans, and functional mandibular movement recordings were used to create a 4D virtual patient on commercially available CAD software. The fixed components including post-and-cores, both metal-ceramic with extra-coronal attachment and monolithic zirconia crowns, and the RPDs were manufactured by computer numerical controlled direct milling.
View Article and Find Full Text PDFJ Dent
January 2025
Clinic of General-, Special Care- and Geriatric Dentistry, Center for Dental Medicine, University of Zurich, Zurich, Switzerland. Electronic address:
Objective: This study aimed to investigate the resin compounds from CAD-CAM 3D-printed denture resins, focusing on the identification and classification of free monomers and other components. The primary objective was to determine the chemical profile of these 3D-prinding resin materials.
Methods: Four 3D-printed denture resins, two base materials (1: DentaBASE, Asiga Ltd.
Materials (Basel)
December 2024
G. Nadjakov Institute of Solid-State Physics, Bulgarian Academy of Sciences, 72 Tzarigradsko Chaussee, 1784 Sofia, Bulgaria.
: Orthodontic archwires undergo chemical and structural changes in the complex intraoral environment. The present work aims to investigate the safe duration for intraoral use (related to the nickel release hypothesis) of different types of nickel-containing wires. By analyzing how the nickel content (NC) varies over time, we aim to provide practical recommendations for the optimal use of said archwires.
View Article and Find Full Text PDFPolymers (Basel)
December 2024
Department of Dentistry, Federal University of Santa Catarina (UFSC), Av. Delsino Conti, s/n-Trindade, Florianópolis 88040-900, SC, Brazil.
This study aimed to evaluate the antimicrobial effectiveness of different disinfection protocols for dentures by combining methods, varying intervention sequences, sodium hypochlorite (NaOCl) concentrations (0.1% and 0.25%), and post-exposure to intraoral temperature.
View Article and Find Full Text PDFPurpose: The purpose of this laboratory study was to evaluate common materials for isolation and neutralizing agents for hydrofluoric acid (HF). Additionally, surfaces of lithium disilicate ceramic were examined for precipitates after the etching and neutralizing process.
Materials And Methods: The HF permeability of the following isolation agents (n=8) was investigated by positioning them over pH indicator paper under airtight conditions and applying 9% HF: latex rubber dam; elastic plastomer rubber dam; nitrile gloves; latex gloves; liquid rubber dam; Teflon; AZ strip.
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