The formation of boundaries is a fundamental organizing principle during development. The Notch signalling pathway regulates this developmental patterning mechanism in many tissues. Recent data suggest that Notch receptors are involved in boundary determination during odontogenesis. It remains, however, uncertain if other components of the Notch pathway are also important for compartmental line...

Tetracycline is one of the teratogenic antibiotics used in various infections affecting both adults and children, has a side effect of staining teeth because of its ability to form a tetracycline calcium orthophosphate complex. It binds with calcium ions and forms this complex at the time of odontogenesis which not only causes a permanent unaesthetic appearance, living behind a huge psychologic...

Dentinogenesis imperfecta is a dominant autosomal hereditary disorder of dentin formation that affects the deciduous and permanent teeth. Its etiology is characterized by inadequate cell differentiation during odontogenesis. The clinical characteristics of dentinogenesis imperfecta are discolored teeth with a translucency that varies from gray to brown or amber. Radiographically, the teeth exhi...

Objective: Cytokeratins are epithelium-specific intermediate filaments. Their altered expression is evident in various benign, hyperplastic and neoplastic lesions. This review provides an in-depth description of cytokeratin expression patterns in odontogenesis; normal development, hyperplastic/benign and malignant lesions or conditions. Materials and methods: Cytokeratin expression can be studi...

The dilated odontoma is an infrequent developmental alteration that appears in any area of the dental arches and can affect deciduous, permanent and supernumerary tooth. Dens invaginatus is a developmental anomaly resulting from invagination of a portion of crown forming within the enamel organ during odontogenesis. The most extreme form of dens invaginatus is known as dilated odontoma. The aim...

In the course of the odontogenesis of bovine incisors several clearly distinguishable phosphohydrolase activities are observed in the pulp and in dental hard tissues. Using various substrates and inhibitors, unspecific alkaline phosphatase, two isoenzymes of acid phosphatase, Ca2(+)-activated ATPase and inorganic pyrophosphatase are characterized. The enzymatic activity of alkaline phosphatase ...