Anatomy Of The Teeth Flashcards
Teeth with two roots
Maxillary first premolars have a buccal and lingual root mandibular molars have a mesial and distal root.
Teeth with five cusps
The maxillary first molar has four cusps on the occlusal surface. The fifth cusp is located in the mesial aspect of the lingual surface. It is afunctional (doesn’t take part in mastication) and is called the cusp of carabelli.
Enamel
Hardest, most calcified substance in the human body.
Dentin
Second hardest substance in the human body.
Dentin makes up the bulk of tooth surface; teeth are mostly made of dentin.
Cementum
Covers the roots of teeth; about one-half millimeter thick. Third hardest substance in the human body; about as hard as bone. Helps to anchor teeth in their sockets because fibers of the periodontal ligament are anchored in cementum on one end and in bone lining the tooth socket on the other end.
Pulp
The most non-calcified (soft) tooth structure. It contains nerve and blood vessels.
Furcation
The space between the roots of multi-rooted teeth.
Cervix - :
The neck of the tooth near the CEJ where the crown of the tooth narrows slightly. (Area where crown and root join)
Cementoenamel junction (CEJ)
Place where the enamel covering the crown of a tooth meets the cementum covering the root.
Apex
Pointed tip of each root
Apical foramen
Opening in the tip of each root through which nerves and blood vessels enter and leave the pulp.
Adjacent teeth
Be able to identify teeth that are next to each other using the universal numbering system.
Midline
The center of each arch
Carries
Decay isolated in enamel does not cause pain, but once carries enters the dentin and exposes dentinal fibrils, the patient will feel discomfort.
Anatomical crown
Portion of the crown that is covered with enamel; extends from the occlusal surface to the cementoenamel junction (CEJ)
