Dental Anatomy & Orofacial Structures Exam Study Guide (TCDHA Semester 1)

TCDHA OROFACIAL SEM 1 FINAL x x x x




TEST / 2025 / DETAILED QUESTIONS
x x x x x x




AND ANSWERS / GRADED A+
x x x x x




 What are the 4 tooth tissues?
x x x x x




Enamel, dentin, cementum and dental pulp x x x x x




 Is pulp a soft tissue?
x x x x




Yes
 What is the hardest tissue in the human body?
x x x x x x x x




Enamel
 What gives enamel the ability to resist the wear the crown of a
x x x x x x x x x x x x




tooth is subjected to?
x x x x




Dense mineralization x




 Which tooth tissue has a self-cleaning ability?
x x x x x x




Enamel
 Which tooth tissue forms the main portion or body of the tooth?
x x x x x x x x x x x




Dentin
 Which tooth tissue is underneath enamel and cementum?
x x x x x x x




Dentin
 Which tooth tissue is made up of hard, dense, calcified tissue?
x x x x x x x x x x




Dentin
 Dentin is softer than enamel? x x x x




True
 Dentin is harder than cementum and bone?
x x x x x x




True
 Which tooth tissue is yellow in colour and elastic in nature?
x x x x x x x x x x




Dentin
 What does secondary dentin do?
x x x x




Adds to itself x x




 When is reparative dentin laid down?
x x x x x




As a response to trauma
x x x x




 Which tooth tissue is a bone-like substance that covers the root?
x x x x x x x x x x




Cementum
 Which tooth tissue protects and support the tooth?
x x x x x x x




Cementum
 Which tooth tissues main function is to allow attachment of tooth
x x x x x x x x x x




to alveolar bone?
x x x

, Cementum
 What are the 2 types of cementum?
x x x x x x




Cellular and acellular x x




 Where is cellular cementum located?
x x x x




Apical 1/3 of root x x x




 Can cellular cementum reproduce itself?
x x x x




Yes
 Where is acellular cementum located?
x x x x




Covers most of the anatomical root
x x x x x




 What are the cells that produce cementum called?
x x x x x x x




Cementoblasts
 Where does the cementum get its nutrients?
x x x x x x




From the outside of the tooth (through blood vessels that come directly
x x x x x x x x x x x




from the bone)
x x x




 Where is the pulp housed? x x x x




Housed in the center of the tooth, with the dentin surrounding the pulp
x x x x x x x x x x x x




tissue
x




 What is the pulp? x x x




A nourishing, sensory, dentin-reparative system of tooth
x x x x x x




 What is the pulp composed of?
x x x x x




Blood vessels, lymph vessels, connective tissue, nerve tissue (pain), and
x x x x x x x x x




special dentin-forming cells called odontoblasts
x x x x x




 What are the teeth least likely to have proximal root concavities?
x x x x x x x x x x




Maxillary canine, mandibular central incisor, mandibular canine,
x x x x x x x




maxillary canine incisor
x x x




 Designed to hold or grasp food x x x x x




Canines
 Longest teeth in the human dentition x x x x x




Canines
 Designed to hold and grind food x x x x x




Premolars
 Designed to cut x x




Incisors
 Lingual surface is shovel shaped to guide food into mouth
x x x x x x x x x




Incisors
 What feature of the canines protects the jaw joint during side jaw
x x x x x x x x x x x




movements?
x




Length and thickness x x




 What feature of the canines helps resist displacement?
x x x x x x x




Triangular in shape x x




 Designed to chew or grind food x x x x x




Molars