: forms the anterior 3/5 of the palate; consists of the horizontal processesof the maxillary and palatine bones•Soft palate (velum):consists of muscle, glands, lymphoid tissue, and aponeurosis;covered by stratified squamous epithelium•Uvulahangs from the posterior border of the soft palate in the midline
Congenital Malformation of the PalateCleft palate:failure of fusion of the lateral palatine processes, the nasal septum, and/ormedian palatine process; surgery requiredMultifactorial causes: Increased steroid exposure in fetal life augments chance of cleft lip/ palate•Anterior cleft palate•Posterior cleft palate (more common)Cleft Lip:Failure of fusion of the maxillary and medial nasal processes leading to persistentlabial groove (uni- and bilateral), surgery requiredUnilateral is the most common congenital malformation of the head-palate/symptoms-causes/syc-20370985
Oral Cavity•Floor of the mouth is formed mainly bymyelohyoidandgeniohyoidmuscles•Sublingual gland lies on either sides between these muscles and the mandible•Pairedgenioglossusmuscles responsible for protrusion of tongue•Anterior belly of the digastric muscle extends below the floor of the mouth on both sides•Submandibular gland lies between this muscle and the mandibleLateral wall:formed by the buccinator muscle
Salivary Glands•Parotid gland, Submandibulargland, and Sublingual gland•Produce saliva, releasing it into theoral cavity through ducts, i.e., parotid(Stensen’s) duct•Receive parasympatheticinnervation from superior and inferiorsalivatory nuclei, through CN VII andCN IXMumps:Inflammation of the parotidgland caused by Mumps virus(myxovirus)
access.nscc.ns.ca/ dentistry/Oral PathologyMeasles (Rubeola):•Extremely contagious, 7-14 days of incubation period•Begins with fever (40°C), cough, conjunctivitis (photophobia), excessive mucous production(coryza) followed byKoplik’sspots(red with white center) in the mouth and spots on the trunkwithin 2-3 daysComplication:otitis media & pneumonia
Herpes Simplex 1: lesions around thelips and in the mouth, virus is dormant insensory ganglia and reactivated bystress, sunlight, menses, etc.Lichen planus:fine, lacy white lines onmucosa (Wickham’s stria)Aphthous ulcers(canker sores orstress ulcers): localized ulceration in themouth, grayish lesion on a red base,painful, stress induced (eg: exams etc.)
Oral pigmentation:1-Peutz Jegher syndrome: Autosomal dominant disease, polyps of GI tract (jejunum)and melanocytic pigmentation of the lips and oral mucosa2-Addison’s disease(adrenocortical insufficiency): excess ACTH, melanocytestimulating properties3-Heavy metal poisoning: lead line in gingiva, silver poisoning (grayish discoloration)-lesions-of-oral-cavity-72727543.com/2016/10/peutzjeghers-syndrome.html
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Term
Fall
Professor
SAMSAM
Tags
Facial nerve
