actinic cheilitis

cheilitis /chei·li·tis/ (ki-li´tis) inflammation of the lips.

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actinic cheilitis  pain and swelling of the lips and development of a scaly crust on the vermilion border after exposure to actinic rays; it may be acute or chronic.

angular cheilitis  perlèche.

solar cheilitis  actinic c.

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actinic cheilitis

n.

See solar cheilitis.

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cheilitis [ki-li´tis]

inflammation of the lips.

actinic cheilitis (cheilitis acti´nica) involvement of the lips after exposure to actinic rays, with pain and swelling and development of a scaly crust on the vermilion border; it may be acute or chronic. Called also solar cheilitis. (See Atlas 3, Part E.)

angular cheilitis single or multiple fissures and cracks at the corner of the mouth on one side or both sides, which in advanced stages may spread to the lips and cheeks. Causes include primary or superimposed infection with microorganisms such as Candida albicans, staphylococci, or streptococci; poor hygiene; drooling of saliva; overclosure of the jaws in patients without teeth or with ill-fitting dentures; riboflavin deficiency; or other causes. Called also perlèche.

solar cheilitis actinic cheilitis.

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actinic cheilitis (aktin´ik),

n See cheilitis, actinic.

Actinobacillus,

n a genus of nonmobile, gram-negative aerobic and facultatively anaerobic bacteria of the family Brucellaceae.

Actinomyces

n.pl filamentous microorganisms that have been implicated in the formation of dental calculus and serve as a mode of attachment of dental calculus to the tooth surface. These microorganisms have also been found in pathologic lesions of the alveolar processes (actinomycosis).

A. israelii

n.pl a normally occurring oral bacteria that aggressively causes infection (actinomycosis) when oral health is compromised.

A. naeslundii

n a specific strain of bacteria resident in open sores in the oral cavity.

A. viscosus,

n a species of
Actinomyces occurring in high numbers in the dental plaque, cemental caries, and tonsillar crypts.