Anatomy Of The Mouth and Normal Dentition - PPPHC Flashcards
What is the primitive oral cavity called in embryology?
Stomodeum
At what prenatal week does the stomodeum appear?
Late in the third prenatal week
What separates the stomodeum from the foregut?
Bucco-pharyngeal membrane
What lines the entire oral cavity?
Mucous membrane tissue
What are the two main areas of the oral cavity?
Vestibule and oral cavity proper
What is the term used to describe the natural teeth in the jaw bones?
Dentition
How many teeth are there in primary dentition?
20 teeth
How many teeth are there in permanent dentition?
32 teeth
What is mixed dentition and at what ages is it usually found?
When both primary and permanent teeth are present; usually between ages 6-12
Which dental arch is fixed and part of the skull?
Maxillary arch
Which dental arch is capable of movement?
Mandibular arch
What joint allows movement of the mandibular arch?
Temporomandibular joint
What divides each dental arch into two halves?
An imaginary midline
Name the four quadrants of the oral cavity.
Maxillary right quadrant, Maxillary left quadrant, Mandibular right quadrant, Mandibular left quadrant
In dental terminology, what does anterior mean?
Toward the front of the mouth
In dental terminology, what does posterior mean?
Toward the back of the mouth
What is tooth eruption?
Movement of the tooth through the bone to become visible in the mouth
What is tooth exfoliation?
Resorption of the root of primary teeth causing it to fall out
What is occlusion?
The relationship between the mandibular and maxillary teeth when in contact
What are the three basic food processing functions of teeth?
Cutting, holding/grasping, and grinding
Which teeth are designed for cutting food without heavy force?
Incisors
Which teeth are designed for cutting and tearing with the application of force?
Canines (Cuspids)
Which teeth are a cross between canines and molars?
Premolars (Bicuspids)
Which teeth are the largest and used to grind food?
Molars
