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Smoker melanosis in a patient consuming 2 packs of cigarette per day. Smoking or the use of nicotine-containing drugs is the cause to Smoker's melanosis. [10] [11] Tar-components (benzopyrenes) are also known to stimulate melanocytes to melanin production, and other unknown toxic agents in tobacco may also be the cause.
These macules often vary in shades of brown, size and are confluent, Although any oral site can be affected, in almost all cases pigmented macules appear on the buccal mucosae, lips and around the mouth. Pigmented macules on the face are less common. The extent of oral involvement and degree of pigmentation varies between each individual case.
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In human anatomy, the mouth is the first portion of the alimentary canal that receives food and produces saliva. [2] The oral mucosa is the mucous membrane epithelium lining the inside of the mouth. In addition to its primary role as the beginning of the digestive system, the mouth also plays a significant role in communication.
The most common cause of tooth impaction is lack of space in the mouth for the tooth. [70] Other causes may be tumors, cysts, trauma, and thickened bone or soft tissue. Tooth ankylosis occurs when the tooth has already erupted into the mouth but the cementum or dentin has fused with the alveolar bone. This may cause a person to retain their ...
"After the color image is established, the black silver-based image is dissolved away, leaving the color behind." #28 The Cathedral, Amsterdam, Holland Image credits: Detroit Photograph Company
Transient surface discoloration of the tongue and other soft tissues in the mouth can occur in the absence of hairy tongue. Causes include smoking (or betel chewing), [8] some foods and beverages (e.g., coffee, tea or liquorice), [8] and certain medications (e.g., chlorhexidine, [8] iron salts, [8] or bismuth subsalicylate (Pepto-Bismol)). [10]
Perioral dermatitis is a rash typically around the mouth, that spares the vermilion border. [10] Cheilitis glandularis may present with a burning sensation over the vermilion border. This chronic progressive condition is associated with thinning of the skin of the lips and ulceration. [11] Infections may involve the vermilion border.