Question:
In the provided image, which stages of amelogenesis are represented by the regions labeled as 5 and 6?
In the provided image, which stages of amelogenesis are represented by the regions labeled as 5 and 6?
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Maturation stage of amelogenesis involves mineral deposition and alternating ruffle-ended and smooth-ended ameloblasts.
Updated On: Feb 17, 2026
- Morphogenic
- Organizing
- Protective
- Maturative
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The Correct Option is D
Solution and Explanation
Step 1: Understanding Amelogenesis Stages.
Amelogenesis is the process of enamel formation and consists of sequential stages including morphogenic, organizing (histodifferentiation), secretory, maturative, and protective stagesEach stage reflects functional and structural changes in ameloblasts
Step 2: Identifying Regions 5 and 6.
In the life cycle of ameloblasts, regions labeled 5 and 6 show ameloblasts with reduced Tomes' processes and alternating smooth and ruffle-ended bordersThese are characteristic features of the maturation phaseDuring this phase, enamel matrix undergoes mineralization and removal of organic components
Step 3: Correlation with Options.
(A) Morphogenic — Concerned with shape determination before enamel secretion
(B) Organizing — Involves differentiation of ameloblasts
(C) Protective — Occurs after enamel maturation when reduced enamel epithelium forms
(D) Maturative — Characterized by cyclic modulation of ameloblasts and increased mineralization
Since regions 5 and 6 represent enamel mineralization and ameloblast modulation, they correspond to the Maturative stage
Amelogenesis is the process of enamel formation and consists of sequential stages including morphogenic, organizing (histodifferentiation), secretory, maturative, and protective stagesEach stage reflects functional and structural changes in ameloblasts
Step 2: Identifying Regions 5 and 6.
In the life cycle of ameloblasts, regions labeled 5 and 6 show ameloblasts with reduced Tomes' processes and alternating smooth and ruffle-ended bordersThese are characteristic features of the maturation phaseDuring this phase, enamel matrix undergoes mineralization and removal of organic components
Step 3: Correlation with Options.
(A) Morphogenic — Concerned with shape determination before enamel secretion
(B) Organizing — Involves differentiation of ameloblasts
(C) Protective — Occurs after enamel maturation when reduced enamel epithelium forms
(D) Maturative — Characterized by cyclic modulation of ameloblasts and increased mineralization
Since regions 5 and 6 represent enamel mineralization and ameloblast modulation, they correspond to the Maturative stage
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