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36 Cards in this Set

  • Front
  • Back
T/F: From the facial or lingual aspect, occlusal embrasures decrease in relative size from anterior to posterior teeth.
FALSE; embrasures INCREASE in seze from anterior to posterior teeth
T/F: Both sides of embrasures on a tooth will have a similar contour.
T/F: From the facial or lingual aspect, the gingival/cervial embrasures decrease in relative size from anterior to posterior teeth?
T/F: From the occlusal aspect, the lingual embrasure is normally smaller then the buccal in posterior teeth?
FALSE; lingual embrasure is normally LARGER than buccal embrasure
T/F: From an incisal aspect, buccal and lingual embrasures are close to equal in size in anterior teeth?
FALSE; LABIAL and lingual embrasures are nearly equal in size in ANTERIOR teeth! (no buccal in anterior teeth)
What does height of contour or crest of curvature mean?
the greatest area of contour on the facial and lingual surfaces
As the contact area moves more cervically in the posterior arch, the relative size of the incisal/occluso embrasure ____, while the relative size of the cervical embrasure ____.
increases; decreases
As the contact area moves more to the buccal in posterior teeth, the relative size of the lingual embrasure becomes ____.
What is a marginal ridge?
The mesial and distal terminations of the occlusal surfaces of posterior teeth and the lingual surfaces of anterior teeth.
Are marginal ridges normally bulkier in the anterior or posterior?
Where should the height of the marginal ridges be located in relation to the adjacent teeth?
At the same level as the adjacent marginal ridge
(there are some exceptions)
Why are the central developmental grooves of posterior teeth normally aligned into one continuous valley?
It creates a more efficient food flow pattern during mastication.
T/F: The three major functions of human teeth are mastication, esthetics, and phonetics.
T/F: The periodontium is the hard supporting tissues of a tooth.
False. It is both the hard and soft supporting tissues.
T/F: The most primitive type of tooth crown is a double lobed/cone conical shape.
False. The conical shape is composed of only a single cone or lobe.
T/F: A homodont has similarly shaped teeth that differ only in size.
T/F: Animals with conical cusps can only perform up and down or lateral movements with their jaws.
False. The conical cusps lock together on closure and only allow an up and down movement.
T/F: The periodontium will suffer if the dentist does not pay heed to normal tooth form and alignment.
T/F: An iatrogenic imperfection is a naturally occurring one.
False. It is a dentist-induced imperfection.
What is the name of the triangular shaped area between adjacent teeth in the same arch cervical to the contact area?
Interproximal space
What is the name of periodontuim that fills the interproximal space?
Gingival tissue - or more specifically, interdental papilla
What are the boudaries of the interproximal space?
Alveolar bone at the cervical base, proximal surfaces of the adjacent teeth on its side, and the contact area of the adjacent teeth at the apex.
The open space between the proximal surfaces of the two adjacent teeth in the same arch, where they diverge facially or lingually, and incisally (occlusally) or cervically from the contact areas is a/an ____________.
Name the two embrasures seen when viewing the teeth from either the facial or lingual aspects.
incisal (occlusal) and cervical (gingival)
Name the two embrasures seen when viewing the teeth from the incisal or occlusal aspect.
Labial (buccal) and lingual
Which embrasure corresponds to the interproximal space?
T/F: The shape, length, and number of root branches are related to a tooth's form and function.
Which tooth has the longest and strongest root in both arches?
Why are molars multirooted?
to complement the increased size of the occlusal table
T/F: A tooth root is NOT directly related to crown form, placement in the arch, and function.
False (A tooth root is directly related..)
T/F: Roots are widest toward cervical area and taper toward the apex.
How many roots do anterior teeth and premolars normally have?
Although premolars normally have single roots, which premolar is an exception? How many roots does that premolar have? What are the names of the root branches?
Maxillary First Premolar
Buccal, Lingual
How many roots do Maxillary Molars have?
Three (one lingual, two buccal)
How many roots do Mandibular Molars have?
Two (one mesial, one distal)
T/F: The potential for breakdown of the periodontium is directly related to tooth form and function.