Learning Activities- O- 4

DENT 237 – O RAL A NATOMY AND H ISTOLOGY 1. Use your IDEHA (pp. 52 to 62) or your MDA (pp. 78-79) to develop a timeline of tooth development. Place the stages of tooth development in the correct order in the table below. 2. Provide a timeline for each stage. 3. Draw a picture for each stage and then give a brief description of the stage from your textbook readings. Stages: Cap/Apposition/Bell/Bud/Maturation/Initiation Stage Initiation Bud Cap Bell Apposition Maturation Timeline 6-7 th week Week 8 9-10 th week 11-12 th week Various Various Picture Descriptio n ectoderm gives rise to the oral epithelium and then to the dental lamina with its dental placodes growth of the dental placode into a bud shape that penetrates the growing ectomesenchym e future shape of the tooth becomes evident; cells specialize to form the enamel organ differentiatio n of the enamel organ into a bell shape with 4 cell types and the dental papilla into two cell types. dental tissues secreted in successive layers as a matrix dental tissue types fully mineralize to their mature form (Fehrenback & Popowics, 2020; Bird & Robinson, 2021) Bell Stage Histodifferentiation 2 School of Health and Public Safety, Program – Dent 237: Oral Anatomy and Histology © 2016, Southern Alberta Institute of Technology