Dental Anatomy. Chapter 11. Test 2 Flashcards
What are the two sets of teeth that people have in their life.
the primary dentition (deciduous [dɪˈsɪdjʊəs] dentition) and the permanent dentition.
How many teeth are in each dentition?
The first set of 20 primary teeth is called the primary dentition, commonly referred to as the “baby teeth”.
The permanent dentition refers to the 32 secondary teeth, or “adult teeth”.
What is the term for the four sections of the divided dental arches?
Quadrants
What are the terms for the front teeth and the back teeth?
Teeth are classified as being anterior (toward the front) or posterior (toward the back).
The anterior teeth are the incisors and canines.
The posterior teeth are the premolars and molars.
What are the four types of teeth?
The permanent dentition is divided into four types of teeth: incisors, canines, premolars and molars.
Which tooth is referred to as the “cornerstone” of the dental arch?
the canine
What are the five surfaces of the teeth?
- facial surface (also referred to as labial surface) and buccal surface
- lingual surface and palatal surface
- The masticatory surface is the chewing surface. Incisal surface (or incisal edge) for anterior teeth and occlusal surface for posterior teeth.
- mesial surface
- distal surface
the surface of anterior teeth facing the lips.
facial surface (also referred to as labial surface)
the facial surfaces of posterior teeth closest to the inner cheek.
buccal surface
the surface on all mandibular and maxillary teeth facing the tongue.
lingual surface
the lingual surface of maxillary teeth because that surface is near the palate.
palatal surface
the chewing surface of anterior teeth
Incisal surface (or incisal edge)
the chewing surface on posterior teeth
occlusal surface
a proximal surface of a tooth that is facing toward the midline or front of the mouth.
mesial surface
a proximal surface of a tooth that is facing away from the midline or toward the back of the mouth.
distal surface
What is the name for the space between adjacent teeth?
Interproximal space.
What is the name of the triangular space toward the gingiva between adjacent teeth?
embrasure [ɪmˈbreɪʒə].
What is the term for the junction of two tooth surfaces?
Junctions of the crown surfaces are described as line angles and point angles.
A line angle is formed by the junction of two surfaces and derives its name from the combination of the two surfaces that join.
A point angle is that angle formed by the junction of three surfaces at one point.
What is the name for a third of the tooth nearest the end of the root?
Apical
What is the name for the position of the teeth when they are in chewing movements?
Functional occlusion (physiologic occlusion) is the term used to describe contact of the teeth during biting and chewing movements.
What is the term for teeth that are in poor occlusion?
Malocclusion refers to abnormal or malpositioned relationships of the maxillary teeth to the mandibular teeth when they are in centric occlusion.
What is the technical term for class III malocclusion?
Mesioclusion. The mesiobuccal cusp of the maxillary first molar occludes in the interdental space between the distal cusp of the mandibular first permanent molar and the mesial cusp of the mandibular second permanent molar.
What classification is neutroclusion?
Class I. An ideal mesiodistal relationship exists between the jaws and the dental arches. The mesiobuccal cusp of the permanent maxillary first molar occludes with the mesiobuccal groove of the mandible first molar.
Class I may include the situation in which the anterior or individual teeth are malaligned in their position in the arch. However, the relationship of the permanent first molar determine the classification.
What is the name for the curve of the occlusal plane?
- The curvature formed by the maxillary and mandibular arches in occlusion is known as the curve of Spee.
During the early eruption of all teeth of both dentitions, a thin residue [ˈrezɪdjuː] of epithelium tissue called the
Nasmyth’s membrane may form over the crown of the teeth
Mixed dentition generally occurs between the ages
6 and 12 years
The mixed dentition period begins with the eruption of the first permanent tooth, which is a …
permanent mandibular first molar