Hunter-Schreger Band

Hunter-Schreger Band

Question 1. Ameloblast.
Answer:

• Ameloblast is the cells responsible for the formation of enamel.
• Ameloblast covers the entire surface of the enamel as it forms.
• But they are lost as tire tooth emerges into the oral cavity.
• These elongated cells are attached to each other by junctional complexes and to cells in stratum intermedium by desmosomes.

“Hunter-Schreger Bands And Dental Research”

“Hunter-Schreger Bands In Dental Enamel”

Ameloblast Size:

• 4 – 5 jam in diameter.
• 40 pm high.
• Function:
• Ameloblasts secrete matrix proteins.
• They are responsible for creating and maintaining an extracellular environment favorable to mineral deposition.

“Hunter-Schreger Band Patterns”

Question 2. Hunter and Schreger bands.
Answer:

• Hunter and Schreger bands are an optical phenomenon produced by changes in direction between adjacent groups of rods.
• Hunter and Schreger bands are found in the inner two third of the enamel.
• Hunter and Schreger bands appear as dark and light alternating zones that can be reversed by altering the direction of incident light.
• Hunter and Schreger bands reveals the difference in the orientation of groups of rods within these zones.
• Hunter and Schreger bands originate at the dentino enamel border.
• Hunter and Schreger bands minimize the risk of cleavage in the axial direction under the influence of occlusal forces.

“Hunter-Schreger Bands And Enamel Strength”