A procedure is described to fabricate a surgical guide to assist in the placement of craniofacial implants for prosthetic auricular rehabilitation. An impression is made of the defect, and a wax pattern of the missing ear is completed and evaluated on the patient. The definitive wax prosthesis is processed in acrylic resin. An occlusal maxillary splint is also fabricated. The occlusal splint and the acrylic resin ear are joined together using an extraoral acrylic resin bar. The resulting surgical guide provides proper orientation of the acrylic resin ear while remaining securely attached to the maxillary arch. This surgical guide can also be utilized for pretreatment radiographic examination.
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http://dx.doi.org/10.1016/j.prosdent.2004.07.012 | DOI Listing |
J Cell Physiol
January 2025
Department of Biosciences & Bioengineering, IIT Bombay, Mumbai, India.
In addition to proteins such as collagen (Col) and fibronectin, the extracellular matrix (ECM) is enriched with bulky proteoglycan molecules such as hyaluronic acid (HA). However, how ECM proteins and proteoglycans collectively regulate cellular processes has not been adequately explored. Here, we address this question by studying cytoskeletal and focal adhesion organization and dynamics on cells cultured on polyacrylamide hydrogels functionalized with Col, HA and a combination of Col and HA (Col/HA).
View Article and Find Full Text PDFACS Omega
January 2025
School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China.
Water-based acrylic emulsions are a crucial component of water-based ink. Preventing visible cracks in emulsion coating during drying is a great challenge due to the high polarity and high surface tension of water. Herein, we propose that the cracking resistance of the coating can be enhanced through the incorporation of hydrophobic silica nanoparticles.
View Article and Find Full Text PDFPhotobiomodul Photomed Laser Surg
January 2025
Department of Preventive Dental Sciences, College of Dentistry, Dar Al Uloom University, Riyadh, Saudi Arabia.
Impact of surface conditioner phytic acid (IP6) Er,Cr:YSGG laser (ECYL) methylene blue photodynamic therapy (MB-PDT) on the microleakage and shear bond strength (SBS) of resin-modified glass ionomer cement (RMGIC) to primary sound dentin. Overall, 80 extracted sound primary molars were collected followed by their submergence in self-cure acrylic resin. The dentin surface was exposed and made flat and was assigned into four groups based on the surface conditioning.
View Article and Find Full Text PDFChem Res Toxicol
January 2025
Institute of Chemistry, University of São Paulo, Av. Prof. Lineu Prestes 748, 05508-900 São Paulo, SP, Brazil.
Acrylonitrile-butadiene-styrene (ABS) is a thermoplastic copolymer commonly used in the electronics, automotive, and construction industries. In the aquatic environment, the formation of microplastics from larger-sized plastic waste occurs naturally, induced by physical, chemical, and biological processes that promote the aging of these particles. Here, we investigated the interactions between the freshwater amphipod and ABS microplastics (10-20 μm) (pristine and after accelerated aging) over 7 days of exposure.
View Article and Find Full Text PDFBMC Oral Health
January 2025
Department of Prosthodontics, Faculty of Dentistry, Recep Tayyip Erdoğan University, Rize, Turkey.
Background: Zygomatic implants are becoming an ideal treatment approach for implant-supported prosthesis treatment developed for the atrophic maxilla. This study aims to evaluate the amount and distribution of stress in implants and peri-implant bone using different implant-supported prosthesis configurations in Aramany Class I maxillary defects through 3-dimensional finite element analysis.
Methods: A 3-dimensional finite element model of the Aramany class I defect was created.
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