dental calculus


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calculus

 [kal´ku-lus] (pl. cal´culi) (L.)
an abnormal concretion, usually composed of mineral salts, occurring within the body, chiefly in hollow organs or their passages. Called also stone. See also kidney stone and gallstone. adj., adj cal´culous.
biliary calculus gallstone.
bladder calculus vesical calculus.
bronchial calculus broncholith.
calcium oxalate calculus oxalate calculus.
dental calculus a hard, stonelike concretion, varying in color from creamy yellow to black, that forms on the teeth or dental prostheses through calcification of dental plaque; it begins as a yellowish film formed of calcium phosphate and carbonate, food particles, and other organic matter that is deposited on the teeth by the saliva. It should be removed regularly by a dentist or dental hygienist; if neglected, it can cause bacteria to lodge between the gums and the teeth, causing gum infection, dental caries, loosening of the teeth, and other disorders. Called also tartar.
gastric calculus gastrolith.
intestinal calculus enterolith.
lung calculus a hard mass or concretion formed in the bronchi around a small center of inorganic material, or from calcified portions of lung tissue or adjacent lymph nodes. Called also pneumolith.
mammary calculus a concretion in one of the lactiferous ducts.
nasal calculus rhinolith.
oxalate calculus a hard urinary calculus of calcium oxalate; some are covered with minute sharp spines that may abrade the renal pelvic epithelium, and others are smooth. Called also calcium oxalate calculus.
phosphate calculus a urinary calculus composed of a phosphate along with calcium oxalate and ammonium urate; it may be hard, soft, or friable, and so large that it may fill the renal pelvis and calices.
prostatic calculus a concretion formed in the prostate, chiefly of calcium carbonate and phosphate. Called also prostatolith.
renal calculus kidney stone.
staghorn calculus a urinary calculus, usually a phosphate calculus, found in the renal pelvis and shaped like the antlers of a stag because it extends into multiple calices.
urate calculus uric acid calculus.
urethral calculus a urinary calculus in the urethra; symptoms vary according to the patient's sex and the site of lodgment.
uric acid calculus a hard, yellow or reddish-yellow urinary calculus formed from uric acid.
urinary calculus a calculus in any part of the urinary tract; it is vesical when lodged in the bladder and renal (see kidney stone) when in the renal pelvis. Common types named for their primary components are oxalate calculi, phosphate calculi, and uric acid calculi. Called also urolith.
uterine calculus any kind of concretion in the uterus, such as a calcified myoma. Called also hysterolith and uterolith.
vesical calculus a urinary calculus in the urinary bladder. Called also bladder calculus.

den·tal cal·cu·lus

1. calcified deposits formed around the teeth; may appear as subgingival or supragingival calculus;
2. Synonym(s): tartar (2)

den·tal cal·cu·lus

(den'tăl kal'kyū-lŭs)
1. Calcified deposits formed around the teeth; may appear as subgingival or supragingival calculus.
2. Synonym(s): tartar (1) .

dental calculus

A crust of chalky material from deposition of calcium and phosphorous from the saliva in the unbrushed collection of food debris and bacteria around the teeth (plaque). Calculus leads to TOOTH DECAY and gum disease.

den·tal cal·cu·lus

(den'tăl kal'kyū-lŭs)
1. Calcified deposits formed around the teeth; may appear as subgingival or supragingival calculus.
2. Synonym(s): tartar (1) . Synonym(s): calculus (1) .
References in periodicals archive ?
Tracking shifts in coca use in the Moche Valley: Analysis of oral health indicators and dental calculus microfossils.
Educational attainment, dental calculus, and having a VPI of 30% or greater were strongly associated with gingival inflammation.
Recent biomolecular studies of ancient dental calculus and preserved feces have demonstrated the wealth of information that can be extracted from such samples (Warinner et al.
We combine the results from residue analyses with a cutting-edge approach to the study of human dental calculus, the potential of which has just been recognized for the understanding of human nutrition: we will analyse DNA from food traces and bacteria as well as proteins, lipids and microremains in dental calculus.
More than onethird (37.2%) of participants showed periodontal tissue alteration; among them, 77.7% of participants had at least one sextant with gingival bleeding, 20.8% exhibited dental calculus, and 1.5% had shallow periodontal pockets ([less than or equal to] 4 mm depth).
If the dental plaque is not removed in time with brushing, the biofilm hardens and forms into hard mineralized dental calculus otherwise known as tartar, which then later causes a tooth cavity.
Study of bacterial viability within human supragingival dental calculus. J Periodontol.
By extracting chemical compounds and microfossils from dental calculus (calcified dental plaque) from ancient teeth, the researchers were able to provide an entirely new perspective on our ancestors' diets.
They applied shotgun DNA sequencing to dental calculus for the first time.
Multilevel model of logistic regression analysis of sites with dental calculus, Brazil, 2005 Variable Estimate Standard Adjusted error (SE) odds ratio Individual level: Gender Female 0.25 0.12 1.64 Male Reference Home ownership No 0.28 0.12 1.76 Yes Reference -2 loglikelihood 568.25 (full model) Contextual level: % Illiterate/cluster 0.08 0.04 0.008 ([beta]) -2 loglikelihood 559.13 (full model) Variable 95%CI (a) P Individual level: Gender Female 1.04-2.58 0.0387 Male Home ownership No 1.11-2.78 0.0264 Yes -2 loglikelihood (full model) Contextual level: % Illiterate/cluster 0.008 (SE) 0.3639 -2 loglikelihood (full model) (a) Confidence interval.
The presence of dental calculus was evaluated dichotomically (present or absent) in the buccal, palatinal/lingual or occlusal surfaces.
As the explorer is passed lightly over the texture pads, the user recognizes the difference in vibrations made by the working end of the explorer, simulating the feel of dental calculus. For more information, call 612-547-9595 or visit www.calcdetect.com.