Dental Anatomy. Chapter 12. Test 3 Flashcards
What is the term for the permanent teeth that replace primary teeth?
succedaneous
[suhk-si-DAY-nee-uhs]
What is the term for a tooth that does not replace a primary teeth?
non-succedaneous. The maxillary first mollars are the first permanent teeth to erupt into the maxillary arch. They erupt distal to the primary maxillary second mollars and thus they are non-succedaneous, meaning they do not replace the primary teeth.
What is the term for the rounded, raised area on the cervical third of the lingual surface of anterior teeth (permanent)?
cingulum [SIN-gyuh-luhm]
What effect do newly erupted central and lateral incisors (permanent) have on the incisal ridge?
Three Mamelons (rounded enamel extensions). These mamelons usually undergo attrition (wearing away of a tooth surface) shortly after eruption. attrition
[əˈtrɪʃn] - истощение, истирание
Which teeth are the smallest ones in the permanent dentition?
The mandibular central incisors. And they are smaller than the maxillary incisors. This means that the mandibular canine is normally mesial to the maxillary canine.
What is the name for the developmental horizontal lines on the anterior teeth?
imbrication lines
What feature borders the occlusal table of a posterior tooth?
The marginal ridges border the occlusal surface and create an inner occlusal table.
What are the pinpoint depressions where two or more grooves meet?
Occlusal Developmental pits. Sometimes located in the deepest portions of the fossa. Each pit is a sharp pinpoint depression where two or more grooves meet.
What are the two morphological forms of mandibular second premolars?
The three-cusp type, or tricanineate [try-kuh-NINE-ee-it] and the two-cusp type, or bicanineate. The more common three-cusp type consists of one large buccal cusp and two smaller lingual cusps.
What is the term for a tooth with three roots?
trifurcated (means divided into thirds). try-FUR-kay-tid
What is the name of the fifth cusp on a maxillary fist molar (permanent)?
the cusp of Carabelli. When present, this cusp is located lingual to the mesiolingual cusp. However, it often is so poorly developed that is scarcely [ˈskeəslɪ] distinguishable.
Which teeth are referred to as the “wisdom” teeth?
Maxillary third mollars
How many roots do mandibular molars have?
The permanent mandibular molars have two roots, mesial and distal. Third molars often present with anomalies and position. A common anomaly is that the multiple roots are fused to form a single root.
What method of identification is used in the Universal/National Tooth-Numbering System for the primary dentition?
The primary teeth are lettered with capital letters from A to T. Lettering begins with the upper right second primary molar (tooth A), works around to the upper left second primary molar (tooth J), drops to the lower left second primary molar (tooth K), and works around to the lower right second primary molar (tooth T).
Do primary anterior incisors have mamelons?
No
