Dental Glossary

Abrasion:
loss of tooth structure caused by a hard toothbrush, poor brushing technique, or Bruxism (grinding or clenching the teeth).

Abscess:
an infection of a tooth, soft tissue or bone

Abutment:
tooth or teeth that support a fixed or removable bridge

Adhesive dentistry:
contemporary term for dental restorations that involve “bonding” of composite resin or porcelain fillings to natural teeth

Air abrasion:
removal of tooth structure by blasting a tooth with air and abrasive, a relatively new technology that may avoid the need for anesthetic

Allergy:
unfavorable systemic response to a foreign substance or drug

Alveolar bone:
the jaw bone that anchors the roots of teeth

Amalgam:
a most common filling material, also known as “silver fillings,”containing mercury (app 50%), silver, tin, copper and zinc used for fillings

Analgesia:
a state of pain relief; an agent lessening pain

Anesthesia:
partial or complete elimination of pain sensation; numbing a tooth is an example of local anesthesia; general anesthesia produces partial or complete unconsciousness

Anterior teeth:
the six upper or six lower front teeth

Antibiotic:
a drug that stops or slows the growth of bacteria

ANUG:
an acronym for Acute Necrotizing Ulcerative Gingivitis, commonly known as trench mouth or Vincent’s disease, aggravated by stress and/or smoking

Apex:
the tip of the root of a tooth

Apicoectomy:
surgical removal of the root tip to treat a dead tooth

Arch :
describes the alignment of the upper or lower teeth

Attrition:
Aoss of structure due to natural wear

base:
cement placed under a dental restoration to insulate the pulp (nerve chamber)

Bicuspid or pre-molar:
transitional teeth behind the cuspids

Bifurcation (trifurcation):
juncture of two (three) roots in posterior teeth

Biopsy:
removal of a small piece of tissue for microscopic examination

Bite:
relationship of the upper and lower teeth on closure (occlusion)

Bite wings:
caries (decay) detection x-rays

Black hairy tongue:
elongated papillae on the tongue, promoting the growth of microorganisms

Bleaching:
chemical or laser treatment of natural teeth for whitening effect

Block injection:
anesthesia of a nerve trunk that covers a large area of the jaw; a mandibular block injection produce numbness of the lower jaw, teeth, half the tongue

Bonding:
adhesive dental restoration technique; a tooth-colored composite resin to repair and/or change the color or shape of a tooth

Bone resorption:
decrease in bone supporting the roots of teeth; a common result of periodontal (gum disease)

Braces:
devices used by orthodontists to gradually reposition teeth to a more favorable alignment

Bridge:
stationary dental prosthesis (appliance) fixed to teeth adjacent to a space; replaces one or more missing teeth, cemented or bonded to supporting teeth or implants adjacent to the space

Bruxism:
grinding or gnashing of the teeth, most commonly while the patient is asleep

Bruxomania:
persistent “nervous” grinding of the teeth while the patient is awake

Calcium:
chemical element needed for healthy teeth, bones and nerves

Calculus:
hard residue, commonly known as “tarter,” that forms on teeth due to inadequate
plaque control, often stained yellow or brown

Canker sore:
mouth sore appearing whitish, often with a red halo, of ten to fourteen day duration

Cantilever bridge:
fixed bridge that attaches to adjacent teeth only on one end

Cap:
common term for dental crown

Caries:
tooth decay or “cavities”

Cast or model:
reproduction of structures made by pouring plaster or stone into a mold

Cavitron:
dental tool that uses high frequency ultrasonic waves to clean teeth

Cellulitis:
soft tissue infection causing extensive, hard swelling, a potentially dangerous condition requiring immediate attention

Cementum:
hard tissue that covers the roots of teeth

Chart:
log of dental or medical records

Clasp:
device that retains a removable partial denture to stationary teeth

Cleaning:
removal of plaque and calculus (tarter) from teeth, generally above the gum line

Composite resin:
material composed of plastic with small glass or ceramic particles; usually cured with filtered light or chemical catalyst

Cosmetic (aesthetic) dentistry:
treatments performed to enhance appearance; not a recognized specialty

CPR (cardiopulmonary resuscitation):
Artificial procedures employed by a rescuer after cessation of breathing or heart stoppage

Cross bite:
reverse biting relationship of upper and lower teeth; aka “under bite,” as in Class III malocclusuion (prognathic jaw)

Crown:
(1) the portion of a tooth above the gum line;
(2) dental restoration covering all or most of the natural tooth

Curettage:
removal of diseased tissue from a periodintal pocket

Cusp:
mound on posterior teeth

Cuspid or canine:
the four “eye teeth”

Cyst:
a soft or hard tissue sac, hard or filled with fluid

DDS:
Doctor of Dental Surgery – equivalent to DMD

DMD:
Doctor of Medical Dentistry – equivalent to DDS

Decay:
destruction of tooth structure caused by toxins produced by bacteria

Deciduous teeth:
commonly called “baby teeth,” the first set of (usually) twenty teeth

Dentin:
inner layer of tooth structure, immediately under the surface enamel

Dental implant:
a (usually) titanium cylinder surgically placed in the bone of the upper or lower jaw to provide support for a dental restoration or appliance

Dentition:
the arrangement of natural or artificial teeth in the mouth

Denture:
removable (partial or complete) set of artificial teeth

Denturism:
the production of dentures dispensed directly by laboratory technicians

Diastema:
space between teeth

Enamel:
hard tissue covering the portion of tooth above the gum line

Endodontist:
specialist who treats injuries, diseases and infections of the tooth pulp (nerve chamber)

Epidemiology:
study of the incidence of disease in a population

Eruption:
process of teeth protruding through the gums

Exfoliate:
process of shedding deciduous (baby) teeth

Exodontia:
practice of dental extractions

Explorer:
sharp instrument used to detect decay on the surface of teeth

Extraction:
removal of a tooth

Eyeteeth:
the four upper and lower canine (cuspid) teeth

Facing:
tooth colored overlay on the visible portion of a crown; may be acrylic, composite or porcelain

FAGD:
Fellowship Academy of General Dentistry

Filling:
restoration of lost tooth structure with metal, porcelain or resin materials

Fistula:
channel emanating pus from an infection site; a gum boil

F lap surgery:
lifting of gum tissue to expose and clean underlying tooth and bone structures

Freeway space:
distance between the upper and lower teeth with the lower jaw in rest position

Forceps:
instrument used for removal of teeth

Forensic dentistry:
practice of gathering legal evidence for body identification or judicial issues

Fossa:
valley found on the sutrpface of posterior teeth

Full denture:
removable dental prosthesis (appliance) replacing all upper or lower teeth

Full mouth reconstruction:
extensive restorations of natural teeth with crowns and or fixed bridges to manage bite problems.

Frenectomy:
removal or reshaping of thin muscle tissue that attaches the upper or lower lips to the gum, or the tongue to the floor of the mouth

GTR:
(guided tissue regeneration) a new technique for replacing bone tissue

General anesthesia:
controlled state of unconsciousness, accompanied by a partial or complete loss of pain sensation, protective reflexes, and the ability to respond purposefully to physical stimulation or verbal command

Geographic tongue:
benign changes in the usual color and texture of tongue; does not require treatment

Gingiva:
gum tissue

Gingivectomy:
surgical removal of gum tissue

Gingivitis:
inflammation of gum tissue

Gum boil:
See fistula.

Gum recession:
exposure of dental roots due to shrinkage of the gums as a result of abrasion,
periodontal disease or surgery

Halitosis:
bad breath of oral or gastrointestinal origin

Heimlich Maneuver:
techinque employed by rescuer for obstruction of victim’s airway

Hematoma:
swelling of effused blood beneath tissue surface

HMO or DMO:
health (dental) maintenance organization which specifies a health care (dental) provider a patient may see. Profitability depends on minimization of treatment.

Hydrogen peroxide:
disinfecting solution used in dental irrigation procedures or as mouth rinse

Hygienist:
dental auxiliary who cleans teeth and provides patient education; administers local anesthetic, nitrous oxide and performs periodontal scaling

Hyperemia:
increased blood flow; may cause dental sensitivity to temperature and sweets;
may precede an abscess

Impaction:
partial or completely unexposed tooth that is wedged against another tooth, bone, or soft tissue, precluding the eruption process

Implant:
artificial device replacing tooth root; may anchor an artificial tooth, bridge,
or denture

Impression:
mold made of the teeth and soft tissues

Incision and drainage:
surgical incision of an abscess to drain suppuration (pus)

Incisors:
four upper and four lower front teeth, excluding the cuspids (canine teeth)

Infiltration:
local anesthetic procedure effective for upper teeth and soft tissue; placement of anesthetic under the gum, allowing it to seep into bone

Inlay:
indirect – filling made by a dental laboratory that is cemented or bonded into place, direct – placement of dental composite resin restoration at chairside

Interproximal:
surfaces of adjoining teeth

Interocclusal:
space between upper and lower teeth

Intraoral camera:
a smal video camera used to view and magnify oral conditions;
images may be printed

Jacket:
crown for a front tooth, usually made of porcelain

Laminate:
thin plastic or porcelain veneer produced in a dental laboratory and then bonded to a tooth

Laughing gas:
nitrous oxide; odorless inhalation agent that produces relative analgesic (sedation); reduces anxiety and creates a state of relaxation

Lesion:
injury of bodily tissue due to infection, trauma or neoplasm

Local anesthesia:
partial or complete elimination of pain sensation, in the immediate vicinity
of its application or injection

Malocclusion:
“bad bite” or misalignment of the upper and lower teeth

Managed care:
program whereby patient-dentist assignment and dentist reimbursement is administered by a separate, external organization

Mandible:
the lower jaw

Margin:
interface between a restoration and tooth structure

MAGD:
Masters Academy of General Dentistry

Maryland bridge:
a bridge that is bonded to the back of the adjacent teeth; requires minimum tooth reduction

Mastication:
process of chewing food

Maxilla:
the upper jaw

Meniscus:
capsular cushion between temporomandibluar joint and glenoid fossa

Milk teeth:
deciduous (baby) teeth

Molars:
three back teeth in each dental quadrant used for grinding food.

Moniliasis (thrush):
opportunistic fungal infection after administration of antibiotic; not uncommon in the mouth

Mucogingival junction (MGJ):
meeting of thick, protective gingival tissue around the teeth and the friable mucous lining of the cheeks and lips

NSAID:
non steroidal anti-inflammatory drug, often used as a dental analgesic

Nerve:
tissue that conveys sensation, temperature, position information to the brain

Nerve (root) canal:
dental pulp; the internal chamber of a tooth

Night guard:
acrylic appliance used to prevent wear and temporomandibular damage caused by grinding or gnashing of the teeth during sleep

Nitrous oxide:
a gas used to reduce patient anxiety

Novocain:
older brand name for a local anesthetic, currently replaced by safer, more effective agents

Occlusion:
closure; relationship of the upper and lower teeth upon closure

Onlay:
laboratory produced restoration covering one or more cusps of a tooth

Oral and maxillofacial surgeon:
a dental specialist who manages the diagnosis & surgical treatment of diseases, injuries, and deformities of the mouth and supporting structures; Requires four additional years of training after dental school

Oral cavity:
the mouth

Oral hygiene:
process of maintaining cleanliness of the teeth and related structures

Oral and maxillofacial surgery:
surgical procedures on the mouth including extractions, removal of cysts or tumors, and repair of fractured jaws

Oral pathologist:
dentist specializing in the study of oral diseases

Orthodontics:
dental specialty that treats misalignment of teeth

Osseous:
boney

Overbite:
vertical overlap of the front teeth

Overdenture:
denture that fits over residual roots or dental implants

Overjet:
horozontal overlap of the front teeth

Palate:
hard and soft tissue forming the roof of the mouth

Palliative treatment:
non invasive relief of irritating conditions

Parasthesia:
a partial loss of sensation; may be temporary or permanent

Partial denture:
removable dental prosthesis (appliance) replacing one or more natural teeth

Pathology:
study of disease

Periapical (PA):
region at the end of the roots of teeth

Periodontal surgery:
recontouring or esthetic management of diseased gum and supporting tissue

Periodontist:
dental specialist treating the gums and supporting soft and hard tissues retaining natural teeth and the surgical placement of dental implants

Pedodontics or pediatric dentistry:
dental specialty focusing on treatment of children

Periodontal chart:
record measuring the depth of gum pockets around the teeth

Permanent teeth:
(usually) thirty-two adult teeth in a complete dentition

Pit:
a small defect in the tooth enamel; junction of four formative lobes of a developing tooth

Placebo:
inert medication or treatment that produces psychological benefit

Plaque:
soft sticky substance that accumulates on teeth; composed of bacteria and food debris due to inadequate dental hygiene

Pontic:
replacement tooth mounted on a fixed or removal appliance

Porcelain crown:
all porcelain restoration covering the coronal portion of tooth (above the gum line)

Porcelain fused to metal (PFM) crown:
restoration with metal coping (for strength) covered by porcelain (for appearance)

Porcelain inlay or onlay:
tooth-colored restoration made of porcelain, cemented or bonded in place

Porcelain veneers:
a thin layer of porcelain, fabricated by a laboratory) bonded to a natural tooth to replace lost tooth structure, close spaces, straighten teeth or change color and/or shape

Post:
thin metal rod inserted into the root of a tooth after root canal therapy; provides retention for a “coping” that replaces lost tooth structure and retains crown

Post-core:
post and buildup to replace lost tooth structure and retain crown

Post-crown:
single structure that combines post-core and crown

PPO or PDO:
preferred provider (dental) organization which a health care (dental) provider may join, offering fee for service treatment at reduced fees

Prognosis:
the anticipated outcome of treatment

Prophylaxis:
cleaning of the teeth for the prevention of periodontal disease and tooth decay

Prosthesis:
an artificial appliance for the replacement for a body part

Prosthodontist:
dental specialist skilled in restoring or replacing teeth with fixed or removable prosthesis (appliance), maintaining proper occlusion; treats facial deformities with artificial prostheses such as eyes, ears, and noses

Pulp:
the nerves, blood vessels and connective tissue inside a tooth

Pulp cap:
a medicated covering over a small area of exposed pulp tissue

Pulp chamber:
the center or innermost portion of the tooth containing the pulp

Pulpectomy:
complete removal of the pulp (commonly done in children’s teeth)

Pulpitis:
inflammation of the pulp; common cause of toothache

Pulpotomy:
partial removal of the pulp tissue

Pyorrhea:
older term for periodontal (gum) disease

Reimplantation:
insertion and temporary fixation of partially or completely avulsed tooth or teeth, resulting from traumatic injury

Reline:
acrylic restoration of denture base to compensate for bone loss; direct: done at chairside; indirect: in conjunction with a dental laboratory

Restoration:
replacement of portion of a damaged tooth

Retained root:
partial root structure remaining in jaw after extraction or fracture of a
natural tooth

Root:
tooth structure that connects the tooth to the jaw

Root canal:
common term for root canal therapy, also the interior space of the tooth
root

Root canal therapy:
process of removing pulp of a tooth and filling it with an inert material

Root resection:
removal of a portion of diseased root structure, retaining the remaining natural tooth

Rubber dam:
soft latex sheet used to establish isolation of one or more teeth from contamination by oral fluids and to keep materials from falling to the back of the throat

Saliva:
clear lubricating fluid in the mouth containing water, enzymes, bacteria, mucus, viruses, blood cells and undigested food particles

Saliva ejector:
suction tube placed in the mouth to remove saliva

Salivary glands:
located under tongue and in cheeks, produce saliva

Scaling and root planing:
meticulous removal of plaque and calculus from tooth surfaces

Sealants:
thin resin material bonded in the pits and fissures of back teeth for the prevention of decay

Secondary dentin:
reparative tooth structure produced by the pulp in response to tooth irritation

Sequstrum:
loosened spicule of bone pushed to the surface

Sinusitis:
infammation of the sinus that may mimc dental pain

Sleep apnea:
the periodic interruption or delay in breathing during sleep

Space maintainer:
dental device that holds the space lost through premature loss of baby teeth

Splint:
connection of two or more teeth so they function as a stronger single structure

Supernumerary tooth:
extra tooth

Suppuration:
bacterial contamination of tissue exudate; pus

Tartar:
common term for dental calculus, a hard deposit that adheres to teeth; produces rough surface that attracts plaque

Tmd (or tmj disorder):
temperomandibular disorder; term given to condition characterized by facial pain and restricted ability to open or move the jaw

Tmj:
the temporomandibular joint, the point where the lower jaw attaches to the skull

Third-party provider:
insurance company, union, government agency that pays all or a part of cost of dental treatment

Tooth bud:
early embryonic structure that becomes a tooth

Tooth whitening:
a chemical or laser process to lighten the color of teeth

Topical anesthetic:
ointment that produces mild anesthesia when applied to tissue surface

Torus:
common bony protuberance on the palate or lower jaw

Transplant:
placing a natural tooth in the empty socket of another tooth

Trauma:
injury caused by external force, chemical, temperature extremes, or poor tooth alignment

Trench mouth:
gum disease characterized by severe mouth sores and loss of tissue. See ANUG.

UCR:
usual, customary and reasonable fees

Unerupted tooth:
a tooth that has not pushed through the gum and assumed its correct position in the dental arch

Veneer:
plastic or porcelain facing bonded directly to a tooth to improve its appearance. See laminate.

Vertical dimension:
arbitrary space between upper and lower jaws upon closure; may decrease over time due to wear, shifting or damage to the teeth

Wisdom teeth:
third (last) molars that usually erupt at age 18-25 (when “wisdom is attained”)

Xerostomia:
dry mouth or decrease in the production of saliva

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