What term describes tapering projections upon the crown of a tooth?

What term describes tapering projections upon the crown of a tooth?

• A. Sulcus
• B. Cusps
• C. Labial/Facial
• D. Incisal

Answer: (B)

A cusp is a tapering projection on the crown of a tooth. These are the pointed elevations on the chewing surfaces, especially on posterior teeth and canines, formed by enamel over dentin and arranged into cusp tips and cusp ridges. They play a key role in guiding occlusion and mastication. A sulcus is the groove around the tooth near the gumline, not a crown projection; labial/facial describes a surface direction toward the lips or face; incisal refers to the biting edge of anterior teeth. So the term for tapering projections on the crown is cusp.

A cusp is a tapering projection on the crown of a tooth. These are the pointed elevations on the chewing surfaces, especially on posterior teeth and canines, formed by enamel over dentin and arranged into cusp tips and cusp ridges. They play a key role in guiding occlusion and mastication. A sulcus is the groove around the tooth near the gumline, not a crown projection; labial/facial describes a surface direction toward the lips or face; incisal refers to the biting edge of anterior teeth. So the term for tapering projections on the crown is cusp.