This paper describes a technique of using Medpor porous high-density polyethylene implants for nasal reconstruction and chin augmentation. This biocompatible material has been used successfully during the last decade for various applications in the reconstruction of the facial skeleton. Among its most frequent uses are repair of the orbital floor and reconstruction of the burned ear, which became standard methods at many centers. Relatively little experience is, at present, on hand concerning the use of porous polyethylene in reconstruction of the nasal framework. Twenty-three consecutive, difficult nasal reconstructions were performed using this method since 1996. Patients were followed up for from 1 to 3 years (mean, 2 years). The results were durable and stable over the time. Eight patients had saddle nose deformity and 15 had catastrophe noses, mostly referrals, previously operated on from one to four times. My aesthetic goals were correction of the depressed nasal dorsum, creation of an acceptable nasal dorsum in the thick and/or twisted noses, and tip elevation. For nasal applications Medpor is available as a strut or sheet. Its body, once implanted, becomes rapidly vascularized and both soft tissue ingrowth and collagen deposition occur. This was confirmed by the microscopic investigation of biopsies. One patient of Vietnamese origin had an aesthetically pleasing result, but her family refused to accept her westernized nose. This gave me a unique opportunity to study the whole Medpor implant 6 months after implantation. There were two complications, one small implant exposure and one low-virulent infection involving the nasal tip. Following revision and antibiotic treatment, both patients healed without sequel. All reconstructions were successful in restoring nasal aesthetics and function. Four patients underwent chin augmentations with an uneventful clinical course.
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Sci Data
December 2024
University of Oslo, Department of Geosciences, Oslo, 0313, Norway.
Sea ice is a key element of the global Earth system, with a major impact on global climate and regional weather. Unfortunately, accurate sea ice modeling is challenging due to the diversity and complexity of underlying physics happening there, and a relative lack of ground truth observations. This is especially true for the Marginal Ice Zone (MIZ), which is the area where sea ice is affected by incoming ocean waves.
View Article and Find Full Text PDFJ World Fed Orthod
December 2024
Division of Sleep Medicine, Department of Psychiatry and Behavioral Sciences, Stanford University School of Medicine, Stanford, California. Electronic address:
Objective: To evaluate whether rapid palatal expansion (RPE) or miniscrew-assisted rapid palatal expansion (MARPE) affects nasal septum deviation (NSD).
Materials And Methods: The study population includes 22 RPE patients ages 9.62 ± 1.
Cesk Slov Oftalmol
December 2024
Purpose: To analyze patients with optic disc drusen (ODD), with emphasis on modern diagnostics.
Materials And Methods: Research of the literature was conducted, together with a retrospective statistical analysis of patients with ODD. The group included individuals with ODD diagnosed using at least one of the following (ultrasound - USG, optical coherence tomography - OCT, fundus autofluorescence - FAF).
J Control Release
December 2024
Department of Otolaryngology, Ren Ji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200127, China. Electronic address:
Background: Chronic rhinosinusitis (CRS) is an inflammatory disease characterized by persistent immune dysregulation, which presents considerable limitations in current medical therapy.
Objects: This study investigates a supramolecular gel (PSPD), which aims to minimize systemic adverse effects through local injection, provide long-lasting anti-inflammatory effects, and modulate the mucosal immune microenvironment.
Methods: The properties of PSPD were evaluated using rheological experiments.
Int J Pharm
December 2024
School of Engineering, Faculty of Science and Engineering, Macquarie University, Sydney, NSW 2109, Australia.
The nasal airway comprises a complex network of passages and chambers and plays an important role in regulating the respiratory system's functions. The nasal vestibule is the first chamber of the nasal airway. While variations in nasal vestibule geometries are known to exist between humans, details of their implications on how they may affect the efficacy of nasal drug delivery devices are less clear.
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