Dental Dictionary

L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z

Lingual

The side of the tooth towards the tongue.

Mesial

The side of the tooth towards the middle of the jaw.

Molar

The last three upper and lower teeth on both sides of the mouth.

Mouthguard

A device worn in the mouth, which prevents injury to teeth and/or jaw during teeth grinding or sport events.

Nightguard

A mouthguard which is worn at night time.

Occlusal

The biting surface of the back teeth.

Occlusion

The way the upper and lower teeth close together.

Onlay

A restoration covers the entire biting surface of a tooth.

Open bite

A situation where the upper teeth not able to contact the opposing lower teeth.

Orthodontics

A special field in dentistry which involves diagnosis, prevention, and treatment of bite abnormalities or facial irregularities.

Over bite

The overlap of upper teeth and lower teeth when they close together.

Overhang

The portion of filling material that hangs beyond the border of the cavity.

Palate

The roof of the mouth.

Panoramic Radiograph

An x-ray film used to obtain the wide view of upper and lower jaw and their associated structures.

Perforation

An opening on a tooth or other oral structure.

Periapical

The surrounding of the bottom of the root of a tooth.

Periodontics

A specialty of dentistry involves diagnosis, prevention, and treatment of gum (periodontal) disease.

Permanent teeth

Adult’s teeth. The first permanent tooth usually comes in around 6 years old.

Pin

A piece of “nail-like” metal. It usually is used for better retention of a filling.

Polish

A process to make the tooth or filling or other denture smooth and glossy.

Pontic

The false tooth in a bridge or denture to replace the missing tooth.

Post

Pins which can be made with different materials such as metal or carbon. Their function usually is to support a big buildup on a tooth.

Posterior

Located at the back.

Pre-authorization

An approval from the particular authority (usually insurance company in dentistry) before any action (treatment) is carried out.

Pre-medication

Medication needing to be taken before treatment.

Premolar

The two teeth located in front of the molar.

Prescription

Written statement (from a doctor to a pharmacist) regarding the type, the amount and direction of the use of a medication for a patient.

Primary teeth

Baby teeth.

Prophylaxis/prophy

The procedure of teeth cleaning and polishing. It also means the prevention of diseases.

Prosthesis

An artificial part to replace missing teeth and their associated structures.

Prosthodontics

A specialty of dentistry involving diagnosis, treatment planning, and fabrication of artificial parts to replace missing teeth and their associated structures.

Pulp

The innermost part of a tooth. It contains nerves and blood vessels inside a tooth.

Pulpectomy

The removal of the whole pulp inside a tooth.

Pulpotomy

The removal of the top part of the pulp inside a tooth.

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Radiograph

An x-ray picture.

Recall

The regular checkup and teeth cleaning appointment.

Recementation

The process of “gluing” the appliance/prosthesis back on the associated area.

Restoration

An item a dentist uses to restore the normal function of a tooth or an area in the mouth. It can be a filling, a crown, a bridge, etc.

Retainer

A device used for maintaining the position of teeth in the jaw in orthodontic treatment.

Retreatment

The process of repeating the root canal treatment.

Root

The bottom part of tooth. It anchors the tooth to its supporting units.

Root canal

The canal that runs inside the root of the tooth. It contains the nerves and blood vessels inside the tooth.

Root canal treatment

A treatment for the root canal inside the tooth.

Root planing

The action of cleaning the root area of teeth.

Rubber dam

A rubber sheet that fits around teeth. It isolates the treatment area from the rest of the oral cavity.

Scaling

The action of cleaning teeth below the gumline.

Sealant

A thin layer of plastic-like material covering the grooves and pits on a tooth to prevent cavity.

Sedation

The use of medication to calm a patient.

Space Maintainer

An appliance to maintain the space between teeth.

Splint

An appliance or a material to prevent movement of a mobile part.

Tempromandibular Joint (TMJ)

The joint that links the two parts of the jaw.

Torus

An outgrowth of bone. It usually develops on the roof of the mouth or around the premolar area on the lower jaw.

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Veneer

A layer of tooth-colored material (can be porcelain, composite, or ceramics) that attaches to the front of the tooth. It is usually used to improve the appearance of the tooth.

Wisdom tooth

The eighth (also the last) tooth from the middle of the jaw.

Xerostomia

Dry mouth

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Z

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Abscess

A collection of pus. Usually forms because of infection.

Abutment

A tooth or tooth structure which is responsible for the anchorage of a bridge or a denture.

Amalgam

A silver filling material

Anesthetic

An agent that causes temporary loss of sensation/feeling.

Anterior

The front position

Apex

The end of the root

Asepsis

No micro-organism

Attrition

Wear of teeth due to activities such as chewing.

Avulsed

An injury that causes a tooth to be completely knocked out of the mouth.

Bitewing

A kind of dental x-ray which is taken with the teeth bite together. The main function of this kind of x-ray is to detect cavities in between teeth and height of bone support.

Bleaching

Whitening of teeth.

Bridge

A prosthesis which is fixed inside the mouth to replace missing teeth.

Bruxism

Teeth grinding.

Canine

The third tooth from the middle of the jaw. There are four of them. They are the longest teeth in humans.

Canker sore

An ulceration with yellow base and red border in mouth. It can be caused by trauma or herpes simplex virus.

Caries

Tooth decay.

Cavity

A hole on the tooth.

Cast

A model of teeth.

Cementation

The process of “gluing” the appliance/prosthesis on the associated area.

Chlorhexidine

An anti-microbial agent. It is available in many forms such as gels and rinses. It is an effective agent in controlling gum diseases.

Clasp

A metal arm extended from a removable partial denture. It helps to hold onto natural tooth structure, thus providing anchorage for the denture.

Cold sore

Ulcers or blisters on lip. A form of herpes simplex.

Composite

White filling.

Cross-bite

An abnormal bite relationship of upper and lower jaw. The lower teeth/tooth align toward the check/ lip side more than the upper teeth/tooth.

Crown (porcelain/plastic/metal)

A crown is almost like a “cap” on a tooth. It covers the tooth partially or totally above the gum to restore its function and outlook.

Decay

A soft substance caused by the bacterial demineralization of enamel and dentin. An infection within a tooth. Must be treated.

Dentistry

A branch of medicine that involves diagnosis, prevention, and treatment of any disease concerning teeth, oral cavity, and associated structures.

Dentition

The position, type, and number of teeth in upper and lower jaw.

Denture

(Immediate/complete/partial) (overdenture, temporary)
An artificial object to replace missing teeth and their neighboring structures. There are many different types of denture to satisfy different treatment requirements and patient preferences.

Denturist

The person who specializes in fabricating dentures. A Denturist is not responsible for making any type of diagnosis or carrying out any other treatment (e.g. removing teeth).

Desensitization

A procedure to reduce the sensitivity of teeth.

Diagnosis

The process of identifying dental disease.

Diastema

The space between two adjacent teeth.

Distal

A direction indication in the mouth. It indicates the direction away from the middle of the jaw.

Edentulous

No teeth.

Endodontics

A department of dentistry involving diagnosis, prevention and treatment of dental pulp (where the nerves and blood vessels are inside the tooth).

Eruption

The process of the tooth appearing in the mouth.

Excision

The action of cutting something off.

Extruded

When a tooth may be pushed partially out of the socket.

Filling

A restoration placed on a tooth to restore its function and appearance.

Flipper

A temporary denture to replace missing teeth during the waiting period for long term treatment.

Floss

A thread/tape that goes in between teeth for cleaning.

Fluoride

A compound of fluorine (an element) which be put in different forms such as water, gels, and rinses to strengthen teeth.

Fluoride Treatment

Teeth treatment with fluoride agents like gel or rinse. It helps to prevent tooth decay.

Fracture

When a cusp of a tooth becomes weakened, a fracture may result. It is possible for the crack to extend further into the root and damage to the pulp is commonplace.

Framework

A metal skeleton of a removable partial denture to support the false teeth and the plastic attachments.

Gingivitis

The mildest form of gum disease: inflammation of gum. The earliest sign is bleeding gum.

Hemorrhage

Bleeding

Hemostasis

Stop bleeding.

Impaction

A condition where a tooth is not able to come in normally or is stuck underneath another tooth or bone.

Implant

A device (usually “screw-like”) put in the jaw bone to support a false tooth, a denture or a bridge.

Impression

A mold taken by some jelly-like material loaded on a tray.

Incisal

The cutting edge of front teeth.

Incisor

The four upper and lower front teeth.

Inlay

A restoration (usually gold, composite or ceramics) fabricated in the lab that cements on a tooth like a missing puzzle piece. It helps to restore the normal function and outlook of the tooth.

Interproximal

The space between two adjacent teeth.

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