Glossary of Dental Terms
A Guide to Dental Terms
Abscess: An infection of a tooth, soft tissue, or bone
Amalgam: A common filling material, also known as a silver filling, contain mercury (approximately 50%), silver, tin, copper and zinc
Anesthesia: Partial or complete elimination of pain sensation; Numbing a tooth is an example of local anesthesia; general anesthesia produces partial or complete unconsciousness.
Antibiotic: A drug that stops or slows the growth of bacteria
Bite: Relationship of the upper and lower teeth on closure (occlusion)
Bleaching: Chemical or laser treatment of natural teeth for a whitening effect
Block Injection: Anesthesia of a nerve trunk that covers a large area of the jaw; A mandibular block injection produces numbness of the lower jaw, teeth, and 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, which is a common result of periodontal (gums & bone) disease
Bridge: Stationary dental prosthesis (appliance) fixed to teeth adjacent to a space; A bridge replaces one or more missing teeth, and is cemented or bonded to supporting teeth or implants adjacent to the space.
Bruxism: Grinding of the teeth, most commonly while asleep
Calculus: Hard residue, commonly known as tartar, that forms on teeth due to inadequate plaque control; Calculus-containing teeth are often stained yellow or brown.
Cap: Common term for dental crown
Caries: Tooth decay or “cavity”
Cavitron: Dental tool that uses high frequency ultrasonic waves and water to clean teeth
Cementum: Hard tissue that covers the roots of teeth
Composite Resin: Material composed of plastic with small glass or ceramic particles that is usually cured with filtered light or chemical catalyst
Crown: The portion of a tooth above the gum line; Also, a dental restoration covering all or most of the natural tooth
Cusp: The mound of tooth structure on posterior teeth
Cyst: A soft or hard tissue sac filled with fluid
D.D.S.: Doctor of Dental Surgery, equivalent to D.M.D.
Decay: Destruction of tooth structure caused by toxins produced by bacteria
Deciduous Teeth: Commonly called “baby teeth,” the first set of permanent teeth
Dentin: Inner layer of tooth structure, immediately under the surface enamel.
Denture: Removable (partial or complete) set of artificial teeth
Diastema: A space between teeth
Enamel: Hard tissue covering the portion of tooth above the gum line
Facing: Tooth colored overlay on the visible portion of a crown that is made of acrylic, composite, or porcelain.
Filling: Restoration of lost tooth structure with metal, porcelain, or resin materials
Fistula: The channel that emanates pus from an infection site, which is a gum boil
Flap Surgery: The lifting of gum tissue to expose and clean underlying tooth and bone structures
Full Mouth Reconstruction: Extensive restorations of natural teeth with crowns and/or fixed bridges to manage bite problems
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
Gingivitis: The inflammation of gum tissue
Gum Recession: The 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
Hyperemia: Increased blood flow that may cause dental sensitivity to temperature and sweets; May precede an abscess
Impaction: A partial or completely unexposed tooth that is wedged against another tooth, bone, or soft tissue, precluding the eruption process
Implant: An artificial device that replaces the tooth root and may anchor an artificial tooth, bridge, or denture
Infiltration: A procedure with local anesthetic effective for upper teeth and soft tissue or for the placement of anesthetic under the gums, allowing it to seep into the bone
Inlay: An indirect filling made by a dental laboratory that is cemented or bonded into place; or a direct placement of dental composite resin restoration at chairside
Intraoral Camera: A small video camera used to view and magnify oral conditions from which images may be printed
Laminate: A thin plastic or porcelain veneer produced in a dental laboratory and then bonded to a tooth
Laughing Gas: Nitrous oxide, an odorless inhalation agent that produces relative analgesia (sedation), reduces anxiety, and creates a state of relaxation
Local Anesthesia: Partial or complete elimination of pain sensation, in the immediate vicinity of its application or injection
Mucogingival Junction (MGJ): The meeting of thick, protective, gingival tissue around the teeth and the friable mucous lining of the cheeks and lips
Night Guard: An acrylic appliance used to prevent wear and temporomandibular damage caused by the grinding or clenching of teeth during sleep
Nitrous Oxide: A gas used to reduce patient anxiety
Novocain: The older brand name for a local anesthetic, currently replaced by safer, more effective agents
Onlay: A laboratory-produced restoration covering one or more cusps of a tooth
Partial Denture: A removable dental prosthesis (appliance) that replaces one or more natural teeth
Periodontal Chart: A record measuring the depth of gum pockets around the teeth
Pit: A small defect in the tooth enamel, or the junction of four formative lobes of a developing tooth
Plaque: A soft, sticky substance that accumulates on teeth and is composed of bacteria and food debris due to inadequate dental hygiene practices
Porcelain Crown: An all-porcelain restoration that covers the coronal portion of the tooth (above the gum line)
Porcelain Fused to Metal (PFM) Crown: A restoration containing metal coping for strength covered by porcelain for aesthetics
Porcelain Inlay or Onlay: A tooth-colored restoration made of porcelain and cemented or bonded in place
Porcelain Veneers: A thin layer of porcelain, fabricated by a laboratory and bonded to a natural tooth to replace lost tooth structure, close spaces, straighten teeth, or change color and/or shape
Post: A thin metal rod inserted into the root of a tooth after root canal therapy; It provides retention for a “coping” which replaces lost tooth structure and retains the crown
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
Restoration: The replacement of a portion of a damaged tooth
Retained Root: The partial root structure remaining in the jaw after extraction or fracture of a natural tooth
Root Canal Therapy: The process of removing the pulp of a tooth and filling it with an inert material
Rubber Dam: A soft, expandable, plastic sheet used to isolate one or more teeth from contamination by oral fluids and to keep materials from falling to the back of the throat
Scaling and Root Planing (SRP): The 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
Tartar: A common term for dental calculus, a hard deposit that adheres to teeth and produces a rough surface that attracts plaque
TMD (or TMJ Disorder): Temperomandibular disorder, the term given to the condition characterized by facial pain and a restricted ability to open or move the jaw
TMJ: The temporomandibular joint where the lower jaw attaches to the skull
Tooth Whitening: A chemical or laser process to lighten the color of teeth
Topical Anesthetic: An ointment that produces mild anesthesia when applied to the tissue surface
Veneer: A plastic or porcelain facing bonded directly to a tooth to improve its appearance; See laminate
Wisdom Teeth: The third (last) molars that usually erupt between the age of 18 to 25
Xerostomia: Dry mouth or decrease in the production of saliva