Unit 3 TISSUES OF THE TOOTH DEA-105 Mod 3 Unit 3 TISSUES OF THE TOOTH

TISSUES OF THE TOOTH Four Primary tissues of tooth: 1. 2. 3. 4.

Tissue: Enamel Characteristics of enamel: Hardest Covers Inorganic ____% Minerals: calcium & phosphorus Composed of enamel rods No ability to repair Color ranges:

Enamel: Thicker at Nutritional disturbances may cause: Weakened surface of enamel would be more:

Enamel Clinical considerations: FLUORIDE – can aid in: Fluoride can be

Enamel: Primary function: Helps tooth withstand:

Dentin tissue Characteristics: Makes up: Harder than: Inorganic _____% Covered by _______ on crown and Covered by ____________on root

Dentin Characteristics: Color is: Dentinal tubules form __-shape pattern ___________form dentin Has ability to:

Dentin: Antibiotic therapy during formation can cause permanent staining Dental caries progress ____rapidly through dentin than enamel Dental hypersensitivity if exposed

Dentin Structural changes in development: Dentin is _____________when formed prior to eruption ________________dentin is formed later in life, in response to trauma

Dentin tissue Sensitivity of dentin: Dentin reacts to: Sensitivity is not uniform Exposed areas are Patients complain Air-water syringe can

Dentin Functions: Protection of NOTE: THE THICKER THE ________ the more ____________for the _______ During cavity preparation, a protective layer of insulation is placed Dentin Repairs itself in response to trauma

Pulp tissue Characteristics: Contains: Sensitivity to: Pulp identifies __________ and __________changes, virbrations and ___________invasion

Pulp Only soft tissue Pulp tissue in crown ___________ Pulp horns Pulp canal located in ___________

Pulp tissue Functions: Assist in production of dentin ***Provide sensitivity Act as a defense mechanism by reacting to injury Provide nourishment to the tooth

Pulp tissue Clinical considerations: Injury to tooth causes _________ Pressure inside tooth causes______ may require _____________

Cementum Characteristics: Function: Covers _________ of tooth Bone-like tissue Inorganic ________ Color: Function: