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NAVEDTRA 14295B Ch.7

HM Chapter 7: Oral Anatomy

QuestionAnswer
what is the odontogenesis phase? tooth formation
What are the three development periods of tooth formation? growth, calcification, and eruption
Dental growth begins when? between the fifth and sixth week of prenatal life
The growth period of development is divided into what stages? Bud, cap and bell.
What is the cap stage also known as? proliferation
The bell stage is the last period of growth and is known as what? histodifferentiation
what are enamel forming cells? ameloblast
what are dentin forming cells? odontoblast
What is it called when primary teeth prepare to fall out and make way for the eruption of primary teeth? Exfoliation (shedding)
what are enamel forming cells? ameloblast
what are dentin forming cells? odontoblast
What is the process by which the organic tissue becomes hardened? calcification
What is the region where the tooth roots separate called? furcation
The crown of a tooth is divided into two parts called? the anatomic and clinical crown
The clinical crown is applied the what part of the crown? the part exposed or visible in the mouth.
what is the opening on the apex that allows for passage of blood vessels and nerves into the tooth? the apical foramen
what tooth tissue is translucent and can vary in color from yellowish to grayish white? enamel
What is the hardest tissue in the human body? enamel
enamel consists of what percent organic, inorganic material and water? 96% inorganic, 1% organic and 3% water
what are the main inorganic components of tooth tissue? calcium and phosphorus
what tooth tissue is light yellow that is less dense than enamel and very porous? Dentin
dentin consists of what? 70% inorganic, 30% organic and water
what is the bonelike tissue that covers the roots of the teeth? cementum
cementum is composed of what? 55% organic and 45% inorganic material
What is the soft tissue inside the tooth? dental pulp
what is the area of the maxilla and mandible where the teeth are embedded? alveolar process
trabecular bone has what appearance on a radiograph? web like
what connects the tooth to the bony socket? periodontal ligament
What area of the tooth do popcorn hulls get trapped in? the gingival sulcus
Baby teeth or primary dentition consists of how many teeth? 20 primary teeth
How many permanent teeth are there? 32
What are the third molars referred to as? wisdom teeth
The lingual surface of what tooth is shovel-shaped? incisors
these teeth have a single cusp and are used for cutting and tearing? cuspids
These teeth have two cusps and are used for cutting tearing and has an occlusal surface that is wider for crushing food? bicuspids
What teeth are used for grinding and chewing solid mass food? molars
Complete identification of a tooth requires what? the quadrant the tooth appears and the full name of the tooth
What is the simplified method of identifying teeth that is approved by the ADA and used by the Armed Services? Universal Numbering System
The point on the proximal surface where two adjacent teeth actually touch each other is called what? contact point
What is the area between two teeth and the interdental papilla? embrasure
What is it called when there is no space between two teeth and the interdental papilla? diastema
What is the slight curve of the posterior teeth called? curve of spee
What is the later curve of the teeth called? curve of wilson
What tooth is the first to erupt? the mandibular first molar
The maxillary first molar normally erupts when? at about 6 years old
the maxillary second molar normally erupts when? at about 12 years old
A pointed or rounded elevation of enamel Cusp
A linear fault that sometimes occurs in a developmental groove by incomplete or imperfect joining of the lobes Fissure
Are small, rounded projections of enamel from the incisal edges of newly erupted anterior teeth. Mamelons
Created by: RabbittDK10
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