Dental Glossary of Terms

A

Abrasion

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

Abscess

A localized infection in the bone or soft gum tissues, usually at the end of the root tip.

Abutment

The natural tooth that holds in place a fixed or removable bridge.

Air Abrasion

Tiny particles of aluminum oxide blasted in a stream of water at the tooth to remove the decayed debris and ruined enamel of cavities.

Allergy

Unfavorable systemic response to a foreign substance or drug.

Alveolar Bone

The jaw bone that anchors the roots of teeth.

Amalgam

The most common filling material used for fillings, also referred to as mercury or silver.

Analgesia

A state of pain relief; an agent to lessen pain.

Anterior Teeth

The six upper or six lower front teeth.

Antibiotic

A drug that stops or slows the growth of bacteria.

Apex

The tip of the root of a tooth.

Apicoectomy

The surgical removal of the root tip to treat a dead tooth.

Arch

Describes the alignment of the upper or lower teeth.

Attrition

Loss of structure due to natural wear.

Autoclave

A device that has a chamber where instruments are placed and steam under pressure is injected, in order to complete sterilization.

B

Base

Cement placed under a dental restoration to insulate the nerve chamber.

Bicuspid or Pre-Molar

Transitional teeth behind the cuspid.

Biopsy

Removal of a small piece of tissue for microscopic examination.

Bite

The way in which the upper and lower teeth meet when closing the mouth.

Bite Wings

Decay detection x-rays.

Bleaching

Chemical or laser treatment of natural teeth for whitening effect.

Bonding

The covering of a tooth surface with a composite resin, to correct stained or damaged teeth.

Bridge

Prosthetic (false) teeth or row of teeth that spans between two natural teeth.

Bruxism

Involuntary, "nervous" grinding of the teeth while the patient is asleep.

C

Calcium

Chemical element needed for healthy teeth, bones and nerves.

Calculus

Hard residue, commonly know as "tartar", that forms on teeth due to inadequate plaque control often stained yellow or brown.

Canker Sore

Mouth sores appearing whitish, often with a red halo.

Cantilever Bridge

Fixed bridge that attaches to adjacent teeth only on one end.

Cap

Common term for dental crown (See Crown).

Cavities

A decay lesion or hole in a tooth.

Clasp

Device that holds a removable partial denture to stationary teeth.

Cleaning

Removal of plaque and tartar from teeth, generally above the gum line.

Composite Filling

A tooth-colored filling that looks like a natural tooth.

Cosmetic Dentistry

Treatments performed to enhance appearance (e.g., bleaching, veneers).

Cross Bite

Reverse biting relationship of upper and lower teeth, e.g., "under bite".

Crown

A porcelain or gold cover for a decayed, damaged, or discolored tooth.

Curettage

Removal of diseased tissue from a periodontal pocket.

Cuspid

The large pointed teeth at the corners of the mouth, located between the incisors and bicuspids. Also known as canine or eyeteeth.

Cusps

The raised round parts on the chewing surface of the teeth.

D

DDS

Doctor of Dental Surgery

Decay

Destruction of tooth structure caused by toxins produced by bacteria.

Deciduous Teeth

Commonly called "baby teeth", the first set of (usually) twenty teeth.

Dental Floss

A waxed or unwaxed piece of nylon string that is inserted between the teeth and moved in an up/down fashion for the removal of plaque or other food deposits.

Dental Implant

Usually a titanium cylinder surgically placed in the bone of the upper or lower jaw to provide support for a dental restoration or appliance.

Dentin

Inner layer of tooth structure, immediately under the surface enamel.

Dentition

The arrangement of natural or artificial teeth in the mouth.

Denture

Removable (partial or complete) set of artificial teeth.

Diastema

Space between teeth.

DMD

Doctor of Medical Dentistry

E

Enamel

The hard tissue covering the portion of tooth above the gum line. This is the hardest substance in the body.

Endodontics

The branch of dentistry concerned with the treatment of the dental pulp or nerve of the tooth. The most common procedure is a root canal.

Endodontist

A specialist who treats injuries, diseases and infections of the tooth pulp.

Extraction

Removal of a tooth.

F

Facing

Tooth colored overlay on the visible portion of a crown.

Filling

Restoration of lost tooth structure with metal, porcelain or resin materials.

Flap Surgery

Lifting of gum tissue to expose and clean underlying tooth and bone structures.

Fluoride

A chemical that is used to strengthen the teeth.

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.

G

General Anesthesia

A "deep sleep" general anesthesia renders you unconscious.

Gingivectomy

Surgical removal of gum tissue.

Gingivitis

Inflammation of gum tissue, early stage of gum disease.

Gum Recession

Exposure of dental roots due to shrinkage of the gums as a result of abrasion, periodontal disease or surgery.

H

Halimeter

An instrument used in the diagnosis and treatment of chronic halitosis.

Halitosis

Bad breath.

Heat Sterilization

A procedure that involves a chamber into which instruments are placed and which raises the temperature for a period of time to kill all microorganisms.

Hygienist

A type of dental professional qualified to clean and scale teeth. They also educate patients on proper dental care.

I

Imaging

A photograph of teeth stored in a computer and then displayed on a television monitor. The dentist is able to show you an image of your smile with new, repaired or whitened teeth.

Impacted Tooth

A tooth that fails to erupt properly and remains fully or partially embedded and covered over by bone or gum tissue.

Implant

A fixed replacement for a missing tooth.

Impression

Mold made of the teeth and soft tissues.

Incisors

The four upper or lower single-cusped front teeth designed for incising or cutting food.

Inlay

A custom made cast-gold alloy that is cemented to a previously prepared cavity in the tooth.

Interocclusal

Space between upper and lower teeth.

Interproximal

Surfaces of adjoining teeth.

Intraoral camera

A small video camera used to view and magnify oral conditions; images may be viewed on a monitor or printed.

IV Sedation

Anesthesia used for people who want to be asleep during dental procedures. It is sometimes described as a "light" anesthesia. (See Anesthesia, Local Anesthesia).

J

Jacket

Crown for a front tooth, usually made of porcelain.

L

Laminate

Thin plastic or porcelain veneer produced in a dental laboratory and then bonded to a tooth.

Lasers

Dental lasers are a family of instruments, some used for surgery, some to cure (harden) restorative tooth materials and enhance tooth bleaching, and others to remove tooth structure to eliminate disease.

Laughing Gas

Nitrous oxide; odorless inhalation agent that produces relative sedation; reduces anxiety and creates a state of relaxation.

M

Malocclusion

"Bad bite" or misalignment of the upper and lower teeth.

Managed Care

Program whereby patient-dentist agreement and dentist reimbursement is administered by a separate, external organization.

Mandible

The lower jaw.

Margin

Interface between a restoration and tooth structure.

Maryland Bridge

A bridge that is bonded to the back of the adjacent teeth; requires minimum tooth reduction.

Medicated Filling

A provisional or temporary filling which incorporates a palliative or soothing medication to calm an inflamed tooth nerve.

Molars

The back teeth that are designed for grinding food before swallowing.

Mouth guard

A removable appliance used to protect teeth from injury during athletic activities.

N

Nerve (Root) Canal

Dental pulp; the internal chamber of a tooth.

Night Guard

A removable acrylic appliance used to minimize the effects of grinding the teeth (bruxism) or joint problems (TMD), usually worn at night.

Nitrous Oxide

A gas used to reduce patient anxiety, also called "laughing gas".

O

Occlusion

Closure; relationship of the upper and lower teeth upon closure.

Onlay

A gold or porcelain inlay extended to cover the cusps for protection of the tooth.

Oral and Maxillofacial Surgeon

A specialist who deals with the diagnosis and surgical treatment of diseases, injuries, and deformities of the mouth and supporting structures.

Oral and Maxillofacial Surgery

Surgical procedures on the mouth including extractions, removal of cysts or tumors, and repair of fractured jaws.

Oral Cavity

The mouth.

Oral Hygiene

Process of maintaining cleanliness of the teeth and related structures.

Oral Pathologist

Dentist specializing in the study of oral diseases.

Oral Sedation

Any substance taken orally (i.e., a pill or liquid) to reduce anxiety and relax the patient.

Oral Surgery

Surgery of the mouth.

Orthodontics

Dental specialty that treats misalignment of teeth. Treatment usually consists of braces or a retainer.

Over Denture

Denture that fits over residual roots or dental implants.

Overbite

Vertical overlap of the front teeth.

P

Palate

The general term that refers to the roof of the mouth.

Palliative Treatment

Non-invasive relief of irritating conditions.

Panorex

A single full mouth x-ray.

Partial Denture

A removable appliance (prosthesis) that replaces some of the teeth in either the upper or lower jaw.

Pathology

Study of disease.

Pediatric Dentistry

Dental specialty focusing on treatment of children’s teeth.

Periapical (PA)

Region at the end of the roots of teeth.

Periodontics

The treatment of diseases of the gum or bone (supporting structure).

Periodontist

A dentist who specializes in the treatment of gum disease.

Permanent Teeth

(Usually) thirty-two adult teeth in a complete dentition.

Pit

A small defect in the tooth enamel.

Plaque

A sticky substance that forms on the surface of the teeth and harbors bacteria growth and acid formation beneath its surface, causing tooth decay. Plaque buildup can irritate the gums and cause periodontal disease.

Pontic

Replacement tooth mounted on a fixed or removal appliance.

Porcelain Crown

All porcelain restoration covering the portion of tooth above the gum line.

Porcelain Fused to Metal (PRM) 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 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; provided retention for a "coping" that replaces lost tooth structure and retains crown.

PPO or PDO

Preferred provider (dental) organization, which a health care (dental) provider may join, offering fee-for-service treatment at reduced fees.

Preventive Services

Dental procedures concerned with the prevention of dental diseases by protective and educational measures. May include exam, cleanings, x-rays and fluoride.

Prophy Jet

Air polishing for stain removal.

Prophylaxis

The professional cleaning and removal of plaque, stains, and calculus on the teeth.

Prosthodontics

The restoration of natural teeth and replacement of missing or lost teeth. Common procedures are crowns, bridges, dentures, and dental implants.

Prosthodontist

A dentist that specializes in the restoration of natural teeth and replacement of teeth. Expertise includes, but is not limited to: crowns, bridges, dentures, dental implants, TMD-jaw joint problems, and oral cancer reconstruction.

Pulp

The nerves, blood vessels and connective tissue inside a tooth.

Pulp Chamber

The opening in the center of the crown of a tooth, which contains the pulp (nerve tissue) and stretches to the tip of the root.

Pulpectomy

Complete removal of the pulp (commonly done in children’s teeth).

Q

Quadrant

One fourth of the mouth or half of the bottom or top section of the mouth.

R

Reimplantation

Insertion and temporary fixation of partially or completely dislodged tooth or teeth, resulting from traumatic injury.

Reline

Acrylic restoration of denture base.

Restoration

Replacement of portion of a damaged tooth.

Retained Root

Partial root structure remaining in jaw after extraction or fracture of a natural tooth.

Retainer

An appliance for maintaining the positions of the teeth and jaws immediately after the completion of orthodontic treatment.

Root

Tooth structure that connects the tooth to the jaw.

Root Canal

A procedure used to save an abscessed tooth in which the pulp chamber is cleaned out, disinfected, and filled with a permanent filling.

Root Planning

Deep cleaning of the teeth to remove hardened plaque below the gum line. This periodontal procedure is usually performed one quadrant at a time.

Root Resection

Removal of a portion of diseased root structure, retaining the remaining natural tooth.

S

Saliva

Clear lubricating fluid in the mouth.

Saliva Ejector

Suction tube placed in the mouth to remove saliva.

Salivary Glands

Located under tongue and in cheeks that produce saliva.

Scaling

A treatment for gum disease involving removal of hardened plaque (tartar or calculus) from teeth.

Sealant

Plastic coating applied to grooves of the teeth to prevent decay.

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.

Supernumary Tooth

Extra tooth.

T

Tartar

Calcified plaque that forms from mineral salts in the saliva and deposits on the teeth.

Third-Party Provider

Insurance company that pays all or a part of the cost of dental treatment.

TMD Temporomandibular Disorders

Problems associated with the temporomandibular joint (TMJ), which connects the lower jaw with the skull. Typically associated with pops and pain in the joint.

Tooth Whitening

A chemical or laser process to lighten the color of teeth.

U

UCR

Usual, customary and reasonable fees.

Ultrasonic Cleaning

Cleaning that uses high frequency sound waves to gently remove deposits, such as tartar and stain, from the teeth.

Unerupted Tooth

A tooth that has not pushed through the gum.

V

Veneers

Plastic or porcelain facing, which is bonded directly to a tooth to improve its appearance, producing a very natural appearance.

W

Whitening

A process, which lightens the color of teeth.

Wisdom Teeth

The third set of molars, the last teeth to come in, usually erupt at age 18-25.

Z

Zerostomia

Dry mouth or decrease in the production of saliva.