Interglobular Dentin:
Sometimes, mineralization of dentin begins in small globular areas that fail to coalesce into a homogenous mass. This results in zones of hypomineralization between the globules.
These zones are known as globular dentin or interglobular spaces. Thus, demonstrating defect of mineralization and not of matrix formation, the dentinal tubules pass uninterruptedly through interglobular dentin.

9 months of age, is the usual eruption time for primary lower lateral incis

Afet tooth eruption in permanent teeth the apex is fully developed after 2-3 years

permanent maxillary First molar teeth normally has four root canals

A permanent tooth erupting in the mouth of an 11 years old child is most likely mandibular second bicuspid