Embrasure

Embrasure is a term used in dentistry to refer to the V-shaped space between the contact area of two adjacent teeth. This space allows for the passage of food away from the teeth and gums, reducing the risk of dental plaque accumulation and subsequent dental caries or gum disease.

Anatomy of an Embrasure

The anatomy of an embrasure varies depending on the location in the mouth and the shape and size of the adjacent teeth. There are three types of embrasures, classified according to their location relative to the contact area: incisal or occlusal, gingival, and facial or lingual.

Incisal or Occlusal Embrasure

The incisal or occlusal embrasure is located above the contact area in anterior teeth and below the contact area in posterior teeth. It is the space that is visible when looking directly at the teeth from the front or back.

Gingival Embrasure

The gingival embrasure is located below the contact area in anterior teeth and above the contact area in posterior teeth. It is the space that is visible when looking at the teeth from the side.

Facial or Lingual Embrasure

The facial or lingual embrasure is located on the buccal (cheek side) or lingual (tongue side) of the teeth. It is the space that is visible when looking at the teeth from the side.

Clinical Significance

Embrasures play a significant role in oral health. They allow for the passage of food away from the teeth and gums, reducing the risk of dental plaque accumulation and subsequent dental caries or gum disease. Embrasures also contribute to the aesthetics of a smile and the phonetics of speech.

In restorative dentistry, the shape and size of embrasures are considered when designing and placing dental restorations such as dental crowns and dental bridges. Proper embrasure form can help to ensure the longevity of the restoration and the health of the surrounding tissues.

See Also

• Dental anatomy
• Dental plaque
• Dental caries
• Gum disease
• Restorative dentistry

Embrasure Resources
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