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Dentinogenesis MCQ Test Dentinogenesis – MCQ Test 1. Dentinogenesis begins at: Cervical loop Root apex Cusp tips CEJ 2. Cells responsible for dentin formation are: Ameloblasts Cementoblasts Fibroblasts Odontoblasts 3. Unmineralized dentin matrix is called: Interglobular dentin Predentin Sclerotic dentin Secondary dentin 4. Major organic component of predentin: Type II collagen Type I collagen Type III collagen Elastin 5. Mineralization of predentin starts after: Immediately 6 hours 24 hours 72 hours 6. Initial daily rate of dentin formation is: 1 µm/day 2 µm/day 4 µm/day 10 µm/day 7. Daily incremental lines in dentin: Lines of Retzius Lines of von Ebner Owen’s lines Neonatal line 8. Accentuated incremental lines are: Perikymata Lines of Retzius Contour lines of Owen Neonatal lines 9. Odontoblastic process is called: Sharpey’s fibers Tomes’ fibers Ko...

Cellular cementum contains embedded cementocytes, or bone-like cells, which help maintain the tissue. Acellular cementum lacks these cells and primarily serves to anchor teeth within the jawbone. Both types of cementum play important roles in supporting teeth and maintaining their stability. Certainly, let's delve into more detail about cellular cementum and acellular cementum: 1. **Cellular Cementum**:    Cellular cementum is a specialized calcified tissue that covers the roots of teeth and plays a crucial role in anchoring teeth to the surrounding bone within the jaw. It contains cementocytes, which are cells embedded within the calcified matrix. These cementocytes are similar to osteocytes found in bone and are responsible for maintaining the health and integrity of the cementum.    The presence of cementocytes in cellular cementum allows for some degree of cellular activity. These cells can detect mechanical forces and respond to changes in the oral e...