Dental Mastery (Embryology) questions with correct answers

Ameloblasts elongate and differentiate into polarized columnar cells, and they arise from where? CORRECT ANSWER Inner enamel epithelium Ameloblasts secrete what? CORRECT ANSWER Amelogenin, Ameloblastin, and enameling proteins What are the three stages of enamel formation? CORRECT ANSWER 1. Inductive 2. Secretory 3. Maturation What happens in the inductive stage? CORRECT ANSWER The polarization and maturation of ameloblasts, along with reciprocal induction What happens in the secretory sage? CORRECT ANSWER the development of Tomes' processes, with initial hydroxyapatite matrix formation What happens in maturation? CORRECT ANSWER ameloblasts transferring calcium from the enamel organ to remove organic proteins and increase the width and mineralization of the enamel prisms. What are natal teeth and neonatal teeth? CORRECT ANSWER Natal teeth are present at birth, and neonatal teeth occur in the first 30 days of life (tip- think neonatal intensive care unit NICU, is for new infants). 80+ percent of the time, they are standard tooth buds, not supernumerary teeth. Can natal teeth pose as a risk? CORRECT ANSWER pose an aspiration risk, as they can be mobile with little root development. Natal teeth can irritate the infant's tongue and inhibit feeding, causing Riga Fede disease. Extraction is typically indicated for both mother and infant benefit.