| periodontist (perio) | <dentistry> A dentist who specialises in the treatment of diseases of your gums. (05 Mar 2000) |
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| periodontitis | Gum disease, gingivitis. (12 Dec 1998) |
| periodontitis complex | Vertical resorption of the alveolar process with pockets of uneven depth on adjacent teeth, and with traumatic occlusion as a factor. (05 Mar 2000) |
| periodontitis simplex | Horizontal resorption of the alveolar process with pockets of even depth on adjacent teeth; traumatic occlusion is not a factor. (05 Mar 2000) |
| periodontitis, juvenile | Localised periodontitis in teenagers and young adults. The onset is during the circumpubertal period but the diagnosis can be made beyond puberty. Lesions are confined predominantly to the first permanent molars or incisors and the distribution of lesions is usually symmetrical. The gingiva may appear normal. The lesions are highly active immediately following puberty but later destruction may slow or cease spontaneously. The disease is four times more prevalent in females than males and more prevalent in african americans than in other races or ethnic groups. (12 Dec 1998) |
| periodontium | Synonym: periodontal ligament. Origin: L. Fr. Peri-+ G. Odous, tooth (05 Mar 2000) |
| periodontoclasia | Destruction of periodontal tissues, gingiva, pericementum, alveolar bone, and cementum. Synonym: periodontolysis. Origin: periodontium + klasis, breaking (05 Mar 2000) |
| periodontolysis | Synonym: periodontoclasia. Origin: periodontium + G. Lysis, dissolution (05 Mar 2000) |
| periodontosis | Synonym: juvenile periodontitis. Origin: periodontium + G. -osis, condition (05 Mar 2000) |
| periodoscope | A table or other means for calculating the periodical functions of women. (30 Mar 1998) |
| extrinsic incubation period | Time required for the development of a disease agent in a vector, from the time of uptake of the agent to the time when the vector is infective. (05 Mar 2000) |
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| fertile period | The period in a regularly menstruating woman's cycle, during which conception is most likely. (05 Mar 2000) |
| latency period | <psychology> The period from about 5 to 7 years to adolescence when there is an apparent cessation of psychosexual development. (12 Dec 1998) |
| latent period | A seemingly inactive period, as that between exposure of tissue to an injurious agent and the manifestation of response or that between the instant of stimulation and the beginning of response. (18 Nov 1997) |
| functional refractory period | The minimum interval possible between successive responses to stimulation of a tissue. (05 Mar 2000) |