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Microstructural Assessment of Molybdenum Disulfide Coatings Using Nanoindentation Hardness.
ACS Appl Mater Interfaces
January 2025
Material, Physical and Chemical Sciences Center, Sandia National Laboratories, Albuquerque, New Mexico 87123, United States.
MoS coatings are used extensively in aerospace and defense applications due to their ultralow friction and high wear resistance. Burnished and resin-bonded MoS coatings are commonly used in these applications due to simplicity in deposition and history of use, despite issues with consistency in coating properties and performance. Physical vapor deposition (PVD) of MoS thin films has emerged as a process alternative in the past 50 years, promising far greater control over film structure and composition but at a greater cost.
View Article and Find Full Text PDFFinite element analysis of stress distribution in cantilever resin-bonded zirconia fixed dental prosthesis and periodontal tissue with alveolar bone loss.
J Prosthodont Res
January 2025
Department of Masticatory Function and Health Science, Division of Oral Health Sciences, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), Tokyo, Japan.
Purpose: To compare the stress distribution in loaded zirconia resin-bonded fixed dental prostheses (RBFDPs) and periodontal tissue using finite element analysis, considering reduced alveolar bone levels and the number of retainers.
Methods: A human skull was micro-CT scanned. Three framework designs were tested: a 2-unit RBFDP using the maxillary left central incisor (#21) as an abutment, another using a canine (#23), and a 3-unit RBFDP using both #21 and #23.
Congenitally Missing Lateral Incisors: Prioritizing Space Closure Whenever Feasible.
Cureus
November 2024
Orthodontics and Dentofacial Orthopedics, Private Sector, Riyadh, SAU.
Congenital missing teeth are among the most prevalent dental malformations. Maxillary lateral incisors are particularly prone to agenesis, often missing bilaterally. This condition presented complex challenges for both patients and clinicians.
View Article and Find Full Text PDFSome of the critical clinical challenges encountered in the treatment of adult patients with deep overbite and worn dentition include correction of deep overbite, establishment of an appropriate occlusal vertical dimension (OVD), and maintenance of long-term occlusal stability. Although Angle's Class II division 2-associated deep anterior overbite is common in orthodontic treatment, simple prosthodontic treatment with great improvement of deep anterior overbite and worn dentition is infrequently reported. A 51-year-old man with Class II Division 2 malocclusion presented with hypo-divergent facial pattern, reduced lower facial height, and protuberant lips.
View Article and Find Full Text PDFProspective clinical study of enamel wear caused by monolithic zirconia resin-bonded inlay-retained and wing-retained fixed partial dentures over 5 years.
Clin Oral Investig
December 2024
Department of Prosthetic Dentistry, Medical Faculty, Heidelberg University, Heidelberg, Germany.
Objectives: To prospectively evaluate the wear of posterior zirconia resin-bonded fixed partial dentures (RBFPDs) with polished occlusal surfaces and their natural enamel antagonists compared to contralateral controls in an enamel-enamel contact over 5 years.
Materials And Methods: In six patients with either an inlay- or wing-retained RBFPD made of monolithic 3 mol% yttria-stabilized tetragonal zirconia polycrystal (3Y-TZP), wear was evaluated indirectly using baseline and annual polyvinyl siloxane impressions. Resulting gypsum models were digitized and aligned by unchanged surface areas.
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