Tissue Types Flashcards
Hard mineralized tissue which covers the dentin of the anatomical crown of a tooth
Enamel
Most densely mineralized and hardest tissue in the human body
Enamel
What is the composition of enamel (inorganic/organic)
97% inorganic
3% organic
Feature of enamel that results from it’s hardness and structure
Brittle
Hard mineralized tissue that forms the main body of the tooth
Dentin
Composition of dentin (inorganic/organic)
70% inorganic
30% organic
Surrounds the pulp
Dentin
Covered by enamel in the anatomical crown and by the cementum in the anatomical root
Dentin
Feature of dentin in comparison to enamel
Softer
Less brittle
Internal line created by the meeting of the dentin and enamel in the anatomical crown of a tooth
Dento-enamel junction
Hard tissue resembling bone which covers the dentin of the anatomical root of a tooth
Less dense than dentin
Cementum
Provides attachment for periodontal fibers
Cementum
Thinnest layer of the tooth (< 1 mm)
Cementum
Irregular anatomic line around the neck of the tooth indicating the junction of enamel of the crown and the cementum of the root
Cemento-enamel junction/cervical line
Constricted area of the crown and root adjacent to the CEJ
Cervix
Soft connective tissue found in the center portion of the tooth entirely surrounded by dentin
Pulp
Functions of pulp
Formation of dentin
Nutrition
Sensation
Defense and protection
Make dentin (throughout life)
Odontoblasts in the pulp
Laid down during period of tooth formation
Primary dentin
Laid down during the rest of tooth’s life after tooth formation
Secondary dentin
Dentin formed in response to irritant
Reparative
Dentin formed in response to normal aging process
Consistent and uniform
Physiological dentin
Connection of pulp to rest of body
Apical foramina
