Aging of oral tissues

Which of these tissues undergo remodelling and turnover and possible loss of calcium ions ?

• Enamel

• Dentin

• Cementum

• Bone

The surface of enamel as compared to sub-surface enamel is :

• Less-mineralized

• Hypermineralized

• Less pigmented

• Less exposure to acids

Where can fluorapatite be found in enamel ?

• Near dentino-enamel junction

• Near inner surface of enamel

• Surface enamel

• Sub-surface enamel

Age related change is enamel is that the thickness of enamel is reduced overtime by:

• Occlusal attrition

• Abrasion

• Erosion

• Abfraction

Age related change in dentin is formation of:

• Primary dentin

• Globular dentin

• Tertiary dentin

• Sclerotic or translucent dentin

Age related change in pulp is :

• More fibrous

• More cellularity

• Pulp stones

• Increased sensitivity

Age changes in salivary gland results in:

• decrease in glandular tissue

• decrease in fibrous tissue

• decrease in duct volume

• dry mouth

Encircle sclerotic or translucent dentin

What is the line that often marks the demarcation between secondary and primary dentine?

• Hunter-Schreger line

• Line of Owen

• Line of Retzius

• Line of Andersen

Which type of dentin is formed as an age related change ?

• Tertiary dentin

• Reactionary dentin

• Reparative dentin

• Secondary dentin