Oral Histo Mosabqa Tooth Development ByDr. Fathy October 25, 2025October 25, 2025 /15 0 Tooth Development The number of attempts remaining is 1 1 / 15 Hyperdontia results from: Overactivity of dental lamina Failure of ERSH Reduced enamel epithelium Enamel pearl formation 2 / 15 Which stage shows the first deposition of dentine? Cap stage Early bell stage Late bell stage Apposition stage 3 / 15 The cell-free zone is seen between: Inner enamel epithelium and dental papilla Dentin and enamel Enamel organ and dental lamina Enamel organ and dental follicle 4 / 15 Which structure induces odontoblast differentiation? Inner enamel epithelium Outer enamel epithelium Stellate reticulum Dental sac 5 / 15 Accessory root canals are caused by: Fusion of ERSH extensions Hyperactivity of dental lamina Pressure on ameloblasts Early degeneration of ERSH 6 / 15 The function of stratum intermedium is: Forms dentin Initiates enamel knot Supplies alkaline phosphatase Acts as cushion 7 / 15 Which of the following best explains the formation of enamel pearls? Differentiation of odontoblasts from dental sac cells Early degeneration of epithelial root sheath Late disintegration of Hertwig’s epithelial root sheath Persistence of stratum intermedium during root formation 8 / 15 The Hertwig’s epithelial root sheath is derived from: Inner and outer enamel epithelium Enamel cord Inner enamel epithelium only Stratum intermedium 9 / 15 The lateral dental lamina gives rise to: Deciduous teeth Vestibular lamina Permanent molars Permanent successors 10 / 15 The reduced enamel epithelium forms after: Eruption Enamel completion Dentinogenesis Root formation 11 / 15 During morphodifferentiation, cessation of mitotic activity in the inner enamel epithelium determines: The shape of the tooth crown The pattern of enamel rods The number of roots The onset of dentin mineralization 12 / 15 The enamel organ is mainly responsible for: Pulp formation Enamel formation Cementum formation Dentin formation 13 / 15 The epithelial rests of Serres are remnants of: Hertwig’s root sheath Dental papilla Enamel organ Dental lamina 14 / 15 The enamel knot appears during which stage? Early bell stage Bud stage Late bell stage Cap stage 15 / 15 The epithelial component of the tooth germ is known as: Enamel organ Dental lamina Dental sac Dental papilla Your score is 0% Send feedback By WordPress Quiz plugin
