نتایج جستجو برای: oral cavity wall
تعداد نتایج: 470236 فیلتر نتایج به سال:
A numerical investigation has been carried out for mixed convection flow in a rectangularventilated cavity with a heat conducting solid circular cylinder at the center. Forced convection flowconditions were imposed by providing an inlet at the bottom of the left wall and an outlet vent at the topto the other sidewall. In this paper, the effect of cavity aspect ratio as well as the mixed convect...
Intestinal colonization by bacteria of oral origin has been correlated with several negative health outcomes, including inflammatory bowel disease. However, a causal role of oral bacteria ectopically colonizing the intestine remains unclear. Using gnotobiotic techniques, we show that strains of Klebsiella spp. isolated from the salivary microbiota are strong inducers of T helper 1 (TH1) cells w...
Abdominal pregnancy (GA) is defined as the implantation and development of fertilized egg in peritoneal cavity. It remains a very rare variety ectopic can go undetected until late gestational age. Although fetus may be viable, maternal morbidity rate high due to occurrence hemorrhages, which complicate management We report case 27-year-old woman, G2P1 under estrogen-progetative oral contracepti...
Tongue base lesions have a diverse and extensive etiology. One of the benign tongue base lesions is schwannoma. Schwannoma and neurofibroma are two tumors of the peripheral nerves originating in the nerve sheaths. Schwannoma account for just over 1% of benign tumors which have been reported in the ora...
BACKGROUND CD44 is a transmembrane receptor found on many different benign and malignant cells. Hyaluronan (HA), a major component of the extracellular matrix, is the primary ligand for CD44 receptors. In cancer cells, HA interaction with CD44 promotes multiple signaling pathways that influence tumor cell progression behaviors in a variety of solid tumors. Increasing evidence indicates that HA ...
The mode of acquisition of gastric Helicobacter spp. infection in dogs has not been determined. It is suspected that oral-oral and faecal-oral transmission may be involved. The present study sought to determine if Helicobacter spp. DNA is present in the oral cavity of healthy and vomiting dogs. Thirty-eight pet dogs (27 vomiting and 11 clinically healthy) were studied. The presence of Helicobac...
In overtone singing, a melody is produced by selecting an appropriate voice harmonic, one after another, while keeping the fundamental frequency constant. A specific harmonic is selected by changing the shape of the oral cavity which functions as a resonator corresponding to the formant used in vowel production. In addition, attenuation of particular frequency components by antiresonance of the...
Background & Aims: The purpose of this study was to evaluate the efficacy of oral selenium in alleviation of oral mucositis induced by radiotherapy in head and neck cancer patients. Methods: In a randomized double blind pilot study, 35 patients under radiotherapy, due to primary tumors localized in the head or neck, who had at least two oral sites were st...
Lipomais a most common benign neoplasm of mature adipose tissue in trunk and extremities. The oral cavity rarely affected by this neoplasm(1-4%) and more occurs in buccal mucosa. Floor of the mouth is rarely affected. Usually its size is less than 3 cm. The present report shows an unusual case of large lipoma (5.5 cm in greatest dimension) in the floor of the mouth of a 68- year- old male and r...
BACKGROUND This report compares the different surgical methods for large and pneumatized mastoid cavity (large cavity) and small and poorly pneumatized mastoid cavity (small cavity) cholesteatomas and their results for the facial nerve and mastoid cavity. METHODS In the period from January 1996 to December 2000, 101 ears with cholesteatomas underwent tympanoplasty with mastoidectomy. In the l...
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