CTB QUIZ 0.0 / 5 ? DentistryChronology of prenatal craniofacial development UniversityOther Created by: RebeccaCharmanCreated on: 23-04-19 16:14 Embryonic head forms 4-5 weeks 1 of 33 Oropharyngeal membrane breaks down 4-5 weeks 2 of 33 Formation of tongue 4-5 weeks 3 of 33 Formation of nasal placodes 4-5 weeks 4 of 33 Formation of maxillary process 4-5 weeks 5 of 33 Formation of lateronasal/medionasal processes 5 weeks 6 of 33 Merger of mandibular processes 5 weeks 7 of 33 Fusion of maxillary and lateronasal processes 6 weeks 8 of 33 Formation of Meckel's cartilage 6 weeks 9 of 33 Initiation of tooth development (primary epithelial band) 6 weeks 10 of 33 Merger of medionasal processes 7 weeks 11 of 33 Fusion of maxillary and medionasal processes 7 weeks 12 of 33 Palatal processes fully formed (lateral to tongue) 7 weeks 13 of 33 Initiation of mandible development 7 weeks 14 of 33 Nasal septum forms from down-growth of frontonasal process 7 weeks 15 of 33 Formation of dental and vestibular lamina 7 weeks 16 of 33 Eyes move towards front of face 7 weeks 17 of 33 Palatal shelves elevated but not fused 8 weeks 18 of 33 Tooth at bud stage 8 weeks 19 of 33 Fusion of palatal shelves in anterior region 9 weeks 20 of 33 Start of ossification of endochondral bones 9 weeks 21 of 33 Mylohyoid inserts into Meckel's cartilage 9 weeks 22 of 33 Palatine process of maxilla and horizontal plates of palatine begin to ossify and develop towards midline 10 weeks 23 of 33 Secondary cartilages (coronoid, condylar and mental ossicles) forming 10-14 weeks 24 of 33 Fusion of palatal shelves in posterior region and formation of palatine raphe 12 weeks 25 of 33 Palatal bones meet in midline of palatal shelves 12 weeks 26 of 33 Development of TMJ cavity 12 weeks 27 of 33 Tooth at cap stage 12 weeks 28 of 33 Ossification of facial bones starts 14 weeks 29 of 33 Tooth at early bell stage 14 weeks 30 of 33 Endochondral ossification of TMJ 16 weeks 31 of 33 Eyes at front of face 16 weeks 32 of 33 Tooth at late bell stage (start of dentine and enamel formation) 18 weeks 33 of 33
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