Results 1 to 10 of about 108,514 (272)

Nasal cavity perforation by implant fixtures: case series with emphasis on panoramic imaging of nasal cavity extending posteriorly [PDF]

open access: yesHead & Face Medicine, 2023
The nasal cavity is an important landmark when considering implant insertion into the anterior region of the maxillary arch. The perforation of implants into the nasal cavity may cause complications, such as implant migration, inflammation, or changes in
Han-Gyeol Yeom   +6 more
doaj   +2 more sources

Effects of decongestion on nasal cavity air conditioning efficiency: a CFD cohort study [PDF]

open access: yesScientific Reports
Decongestion reduces blood flow in the nasal turbinates, enlarging the airway lumen. Although the enlarged airspace reduces the trans-nasal inspiratory pressure drop, symptoms of nasal obstruction may relate to nasal cavity air-conditioning.
Qiwei Xiao   +2 more
doaj   +2 more sources

A CASE OF SINO-NASAL MALIGNANT MELANOMA [PDF]

open access: yesTrakia Journal of Sciences, 2022
Mucosal melanomas are rare malignant neoplastic disease, that originates from melanocytes in mucosal tissue. It is a tumor mass of the nasal cavity or paranasal sinuses and most commonly originates from the nasal septum, nasal turbinates, or lateral ...
At. Vlaykov, St. Valkanov
doaj   +1 more source

Clinical, anatomopathological and immunohistochemical findings of a transitional cell carcinoma from nasal cavity, frontal and ethmoidal sinus with meningoencephalic invasion in a dog [PDF]

open access: yesOpen Veterinary Journal, 2021
Background: Primary neoplasms of the nasal cavity and sinuses are uncommon in domestic animals, most of which are of epithelial origin, being adenocarcinoma the most common tumor diagnosed in this region.
Leonardo L. Gorza   +7 more
doaj   +1 more source

Nasal airflow patterns in a patient with septal deviation and comparison with a healthy nasal cavity using computational fluid dynamics

open access: yesFrontiers in Mechanical Engineering, 2022
Background and objective: Causes for nasal airway obstruction (NAO) are many but septum deviation is the most prevalent etiology. A deviated septum affects the airflow dynamics in the human nasal cavity, which in turn affects the physiological functions ...
John Valerian Corda   +6 more
doaj   +1 more source

Three-Dimensional Structure Reconstruction System of Nasal Cavity Based on a Short-Source Acoustic Tube

open access: yesApplied Sciences, 2023
The nasal cavity three-dimensional structure reconstruction is significant for the diagnosis and treatment of nasal and nasopharynx diseases. Currently, most systems for nasal cavity three-dimensional structure reconstruction are based on a long-source ...
Xiaoqin Lian   +7 more
doaj   +1 more source

The impact of nasal adhesions on airflow and mucosal cooling -- a computational fluid dynamics analysis [PDF]

open access: yesRespiratory Physiology & Neurobiology Volume 293, November 2021, 103719, 2021
Nasal adhesions are a known postoperative complication following surgical procedures for nasal airway obstruction (NAO); and are a common cause of surgical failure, with patients often reporting significant NAO, despite relatively minor adhesion size.
arxiv   +1 more source

Rapid Maxillary Expansion Has a Beneficial Effect on the Ventilation in Children With Nasal Septal Deviation: A Computational Fluid Dynamics Study

open access: yesFrontiers in Pediatrics, 2022
Nasal septal deviation (NSD) is one of the most common nasal diseases. Different from common clinical examination methods, computational fluid dynamics (CFD) can provide visual flow information of the nasal cavity.
Shuai Chen   +5 more
doaj   +1 more source

Nasality Changes With Age in Normal Korean-Speaking Adults [PDF]

open access: yesClinical and Experimental Otorhinolaryngology, 2019
Objectives This study was performed to investigate the effects of aging on nasality and the influence of age-related changes in nasal cavity volume and nasal patency on nasality. Methods A total of 180 healthy Korean-speaking adult volunteers, who had no
Jun Xu   +7 more
doaj   +1 more source

Pressure distribution and flow dynamics in a nasal airway using a scale resolving simulation [PDF]

open access: yesPhysics of Fluids 33, 011907 (2021);, 2021
Airflow through the nasal cavity exhibits a wide variety of fluid dynamicsbehaviour due to the intricacy of the nasal geometry. The flow is naturallyunsteady and perhaps turbulent, despite CFD in the literature that assumesa steady laminar flow. Time-dependent simulations can be used to generatedetailed data with the potential to uncover new flow ...
arxiv   +1 more source

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