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Updated: 05/09/2007

Dental Terminology

A | B | C | D | E | F | G H | I J K | L | M N | O | P Q | R | S | T | U | V W | X Y Z
— A —
ABSCESS Localized collection of pus in a cavity formed by the breakdown of tissue cells.
ACUTE CONDITION A type of illness or injury that has a rapid onset and ordinarily lasts less than 3 months. (Pregnancy is also considered to be an "acute condition" despite lasting longer than 3 months).
ANAEROBIC BACTERIA Those organisms that cannot live in the presence of oxygen.
ANTIBIOTICS Drugs used to combat both minor and life-threatening bacterial infections.
— B —
BICUSPIDS Also called premolars, these are the two teeth behind the cuspids or eyeteeth. There are a total of 8.
BIRTH WEIGHT

According to the National Center for Health Statistics, is defined as the first weight of the newborn obtained after birth.

Low birth weight is defined as less than 2,500 grams or 5 pounds 8 ounces.

Very low birth weight is defined as less than 1,500 grams or 3 pounds 4 ounces.

— C —
CALCULUS

Hard, calcified dental plaque. It is the mineralized remains of dead bacteria attached to surfaces of the teeth. Also called "tartar."

There are two types of calculus: that which forms above the gingival margins, called supragingival calculus, and that which forms on roots below the gingival margins, called subgingival calculus.

CANINES or
CUSPIDS
Eyeteeth.
CARIES or
DENTAL CARIES
Tooth decay.
CARIOUS LESION An area of decay on a tooth.
CAVITRON Ultrasonic dental tool that uses high frequency sound waves to remove hard deposits from the teeth.
CEMENTUM Hard tissue that covers the roots of teeth. Teeth are held in place by connective tissue fibers, the periodontal ligament that attaches the cementum to the bony sockets in the jaws.
CHARTING To record the depth of the gum pockets around teeth.
CLORHEXIDINE An anti-microbial agent effective in controlling gum diseases.
— D —
DEBRIDEMENT Removal of infection from a wound.
DENTAL CARIES Tooth decay.
DENTIFRICE Any preparation used in the cleaning of the teeth.
DENTIN Hard, living inner layer of a tooth just below the enamel layer.
DISTAL The surface that faces toward the back, away from the midline of the jaw.
DRY MOUTH
(XEROSTOMIA)
Occurs when the salivary glands in your mouth don't produce enough moisture, disrupting the balance of normal microorganisms in your mouth. This dryness increases your risk of oral thrush, (yeast) dental caries, and periodontal infections.
— E —
ENAMEL
The hardest substance of the body, the covering of the crown of the tooth, located above the gum line.
EYE TEETH The four canines or cuspids.
— F —
FACIAL Pertaining to the face. The outer side of a tooth, that side facing the face
FLAP SURGERY Loosening of gums from bone to expose and debride the periodontal pocket as well as the underlying tooth structures.
— G H —
GESTATIONAL DIABETES

Approximately 3 percent to 5 percent of pregnant women in the United States develop gestational diabetes, a type of diabetes mellitus, usually beginning in the second or third trimester of pregnancy.

Like other forms of diabetes, it affects the way your body uses blood sugar (glucose). In many cases it goes away after pregnancy, but more than 50% of women who experience this condition later develop a permanent form of diabetes - type 2 (formerly called adult-onset or noninsulin-dependent) diabetes.

GINGIVA, GINGIVAE The anatomical word for the gums.
GINGIVAL The adjective pertaining to the gums.
GINGIVECTOMY Surgery to remove gum tissue.
GINGIVITIS The initial stage of gum disease that is caused by pathogenic bacteria that reside in the gingival crevices (under the gums.) This initial stage of gingival disease may progress into destructive periodontitis. The gums usually become red, swollen, bleed easily, and are often tender to touch.
— I J K —
INCISORS Four upper and four lower front teeth, the central and lateral incisors (excludes the canine teeth).
IMPLANT

Artificial device usually made from titanium, surgically placed in the jaw to substitute for a natural tooth root. Prosthetic teeth and bridges are attached to the part of the implant that protrudes through the gum.

An implant functions like a natural tooth and needs to have the same care or will be lost through the same process of infection, called peri-implantitis rather than periodontitis.

— L —
LAVAGE Washing out or cleansing with water.
LINGUAL Pertaining to the tongue. That side of a tooth that faces the tongue.
— M N  —
MAINTENANCE or
RECALL THERAPY
An ongoing program, designed to supplement the anti-infective self-care that patients use at home. This treatment, usually every 3-4 months, includes the professional examination of teeth and periodontal tissues for evidence of disease activity. Teeth are then scaled and polished, and pockets are irrigated with an antiseptic solution.
MALOCCLUSION "Bad bite" between the upper and lower teeth, causing your teeth to align incorrectly
MANDIBLE The lower jaw.
MAXILLA The upper jaw.
MESIAL The surface (of the tooth) that faces closer to the front or to the midline of the jaw.
MICROBIOLOGICAL Pertaining to microorganisms and their effects on other living organisms.
MOLARS The three back teeth in each quarter of the mouth, including the wisdom teeth.
MORNING SICKNESS The overall queasiness, nausea, or vomiting that many pregnant women experience during the first 12 to 14 weeks of their pregnancy.
— O —
OCCLUSAL The surface of the tooth that is used for chewing.
OCCLUSION How the upper and lower teeth come together.
ORAL HYGIENE The process of maintaining the cleanliness of the mouth.
OSSEOINTEGRATION The attachment and assimilation of the bone to a dental implant. This process takes from three to six months after the implant has been placed in the mouth.
— P Q  —
PALATINE, PALATAL Related to the hard or soft palate.
PAPILLA, PAPILLAE The cone shaped portion of gum tissue between the teeth
PARTIAL Removable denture replacing some of the teeth often lost through gum disease.
PATHOGENIC Disease-causing.
PERIDEX Clorhexidine.
PERIODONTAL LIGAMENT The fibers of tissue that attach the teeth to the bone. When these ligaments are destroyed by advanced cases of periodontal disease, the teeth become loose.
PERIODONTAL POCKET A separation of the gum tissues surrounding the tooth forming a space or pocket. The pocket fills with plaque and infection. If not treated, the bone and connective tissue surrounding the tooth may become so severely damaged that the tooth will fall out or need to be extracted.
PERIODONTAL DISEASE(S) Include gingivitis, rapidly advancing destructive periodontitis, and chronic destructive periodontitis.
PERIODONTITIS, PERIODONTAL DISEASE, PERIODONTAL INFECTIONS, DESTRUCTIVE PERIODONTITIS Infections caused by invasive bacteria that colonize root surfaces and the periodontal tissues that surround them. Various types of periodontal disease affect about 80% of the American adult population. Untreated, destructive periodontitis will progress until the body, trying to protect itself, will cause the teeth to loosen and eventually fall out.
PERIODONTIUM The tissues that surround and support the teeth, including the gums, periodontal ligament and bone.
PERIODONTOPATHIC Causing periodontal diseases.
PERMANENT TEETH The thirty-two adult teeth.
PLAQUE or DENTAL PLAQUE Also called bacterial bio-films. These soft, sticky coatings form as many strains of bacteria colonize and grow on tooth surfaces above and below the gum margins. If plaque is not removed carefully each day by brushing, irrigating, and flossing, bacteria attached to tooth-surfaces die and harden from the minerals in the saliva and crevicular exudates. These mineralized deposits are called calculus or tartar.
PREGNANCY An extraordinary chain of events that begins with the union of egg and sperm and the preparation of the body to provide the nourishment and hormones that govern the baby's growth and development
PREGNANCY TUMOR A large lump or overgrowth of gum tissue that is not cancerous, generally is not painful, and usually disappears or diminishes after pregnancy. If the tumor persists, it may require removal by a periodontist or oral surgeon.
PROXIMAL The surfaces nearest to or next to.
PYOGENIC GRANULOMA Another name for pregnancy tumor.
— R —
ROOT The below the gum part of tooth that anchors the tooth to the bone.
ROOT SCALING and PLANING A non-surgical procedure where the hygienist, dentist, or periodontist removes soft bacterial plaques and their calcified remains (calculus) from tooth surfaces and periodontal pockets.
— S —
SLOUGHING
(as related to the mouth)
The casting off of the outside layer of skin or gum tissue.
SPECIFIC PLAQUE HYPOTHESIS Asserts that specific bacteria cause gum infections. The culprits are: Porphyromonas gingivalis, Bacteroides forsythus, and Treponema denticola.
SUPRAGINGIVAL Above the gum line.
SUBGINGIVAL Below the gum line.
— T —
TARTAR A synonym for calculus.
TEMPROMANDIBULAR JOINT (TMJ) The joint that links the two jaws, the maxilla and the mandible.
THERASOL A pleasant tasting, non-staining, anti-infective medication that can be used as a rinse or, when mixed with water, as an irrigating solution.
TORUS A benign outgrowth of bone that usually develops on the roof of the mouth or under the tongue, on the lower jawbone.
TORI Plural for torus.
— U —

UVULA

The little dangling structure in the back of your throat.
— V W  —
VASOCONSTRICTOR Something that causes the narrowing of blood vessels so that less blood is able to flow through at a time.
— X Y Z —
XEROSTOMIA See "dry mouth."
XYLITOL CHEWING GUM
(pronounced zy-li-tall)
A gum containing a natural sweetener made from the bark of birch trees. Recent studies show that xylitol gum helps to reduce the levels of Streptococcus Mutans, the bacteria responsible for dental caries.

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