Background: Restoring an ideal proximal contact in direct Class II composite resin restorations is challenging due to polymerization shrinkage, absence of condensability of composite materials, thickness of matrix bands, and the use of various separation techniques, retainers, and bands.
Aims: The aim of this study was to evaluate the proximal contact tightness that is achieved by various matrix systems used to restore a direct Class II cavity with composite resin restoration.
Methods: A systematic review was carried out according to the PRISMA 2020 statement guidelines. The online search for the articles was done in electronic databases of MEDLINE/PubMed, Cochrane, and Google Scholar. The articles comparing different matrix systems for restoration were selected. Out of 146 articles, a total of 6 articles met the selection criteria and were included. The QUIN risk-of-bias (RoB) tool was used for assessing the study quality. The data extracted from full text articles selected for inclusion, using a standardized software (Office Excel 2013 Software, Microsoft Corporation, Redmond, WA, USA).
Results And Conclusion: Combination of sectional matrices and separation rings resulted in tighter proximal contact compared to other matrix systems.
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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10880478 | PMC |
http://dx.doi.org/10.4103/JCDE.JCDE_203_23 | DOI Listing |
Introduction During carotid artery stenting (CAS), safe navigation of the guiding catheter (GC) is essential for the success of procedures. However, in cases where stenosis or floating thrombi are located in the common carotid artery (CCA), especially for proximal lesions, advancing the GC without touching the lesions is often difficult. We describe a preliminary experience of the "no-touch" technique for navigating the GC to the CCA using an inner catheter with a specifically designed shape and stiffness optimized to overcome tortuous anatomy.
View Article and Find Full Text PDFBMC Musculoskelet Disord
January 2025
Department of Orthopedic Surgery, The 3rd Hospital of Hebei Medical University, Hebei, Shijiazhuang, 050051, P.R. China.
Background: It is known that open wedge high tibial osteotomy (OWHTO) may lead to progression of patellofemoral degeneration due to descent of the patellar height. However, the difference in patellofemoral joint (PFJ) loads with normal daily activity between uniplane and biplane osteotomies is unclear. The purpose of this study was to reveal the differences in PFJ biomechanics between uniplane and biplane OWHTO using finite element analysis (FEA).
View Article and Find Full Text PDFInstr Course Lect
January 2025
The medial ulnar collateral ligament of the elbow is the primary stabilizer against valgus load. It can tear acutely or through attritional damage as in repetitive overhead sports. Although baseball players, particularly pitchers, are the most vulnerable athletes, these injuries also occur in contact athletes, gymnasts, and javelin throwers.
View Article and Find Full Text PDFIndian J Plast Surg
December 2024
Department of Plastic and Reconstructive Surgery, Lokmanya Tilak Municipal Medical College and General Hospital, Mumbai, Maharashtra, India.
Fractures of the condylar region of the mandible, although fairly common, also generate the most debate regarding management-both closed and open treatment options have been recommended and shown to yield good results. We present our experience with a minimal access retromandibular approach to fractures of the vertical mandible. This is a retrospective study of all patients who underwent open reduction and internal fixation for fractures of the vertical mandible (condyle, subcondylar region, ramus) using a retromandibular approach at a tertiary care hospital in a metropolitan city in India between January 2022 and July 2023.
View Article and Find Full Text PDFEur J Orthop Surg Traumatol
December 2024
Department of Orthopedics and Trauma, Universidade Federal Fluminense (UFF), Niterói, Rio de Janeiro, Brazil.
Purpose: Although several techniques have been described for bent intramedullary nail removal, there is no universally accepted strategy. We hypothesized that a device based on the action principle of a three-point bend fixture could facilitate extraction of bent intramedullary nails; this paper describes its design and experimental testing.
Methods: Five large synthetic left femurs and five steel intramedullary nails were used.
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