Tooth Morphology – Flashcards
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study of form and structure of the teeth?
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Tooth Morphology
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How many quadrants in the oral cavity?
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Four
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How many teeth are found in each deciduous arch?
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10
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Place the teeth in the correct order from the mid-line back
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Central incisor, lateral incisor, canine, 1st premolar, second premolar, 1st molar, 2nd molar, 3rd molar
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The adult dentition has how many teeth?
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32
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The anterior teeth are from?
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Canine to canine
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A person's first tooth erupts at about what age?
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6-10 months
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All deciduous teeth are fully erupted around what age?
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3
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The period of mixed dentition is?
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6yrs-12yrs
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By what age have all deciduous teeth exfoliated?
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12
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The first permanent tooth erupts usually at what age?
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6yrs
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The first molars erupt before the cuspids?
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True
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Which permanent teeth are not succedaneous?
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Molars
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What is the first permanent tooth to erupt ?
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1st molar
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Are the root and the crown are divided by the cervical line?
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True
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The clinical crown is defined as?
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Portion of the crown that is visible
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How many surfaces do all teeth have?
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5
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What is the tooth surface which is located on the tongue side of the mouth
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Lingual
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Which tooth surface is located on the cheek side of the posterior teeth?
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Buccal
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The opening in the apical portion of each root is?
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Apical forem
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What is a tooth with 2 roots
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Bifurcated
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The convex area found on the lingual surfaces of anterior teeth is called?
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cingulum
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What is the shallow rounded or angular depression found on tooth surfaces?
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Fossa
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What is the dividing point of a multi-rooted tooth called?
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Furcation
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What are 3 bulges on the incisal edges of newly erupted central incisors?
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Mamelons
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What is the elevated area of enamel that forms the mesial, and distal borders of each tooth?
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Marginal Ridge
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What is the elevated area of enamel which extends obliquely across the tooth?
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Oblique ridge
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What is the union of 2 triangular ridges that produce a single ridge across the occlusal surface?
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Transverse ridge
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What is an elevation of enamel that descends from the cusp into the middle area of the occlusal surface?
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Triangular ridge
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Which teeth play an important role in speech?
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Incisors
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Which teeth are sometimes congenitally missing?
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Maxillary lateral incisor
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Which teeth are often called the cornerstone of the mouth?
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Canine
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Which tooth has the longest root in the maxillary arch?
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Canine
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Which premolar has two roots?
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Maxillary 1st premolar
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Which tooth is often considered for removal for orthodontic treatment?
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Maxillary 1st premolar
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Which tooth contains the cusp of Carrabelli?
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Maxillary 1st molar
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The smallest permanent tooth in the dentition is?
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Mandibular central incisor
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The mandibular cuspid the mesial slope is longer than the distal slope?
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False
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Which tooth has a non-functioning lingual cusp?
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Maxillary 1st molar and 1st mandibular premolar
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Which tooth has 2 pulp canals in one of its roots?
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Mandibular 1st molar
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The tooth that appears to have 4 equal size cusps
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Mandibular 2nd molar
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Deciduous teeth have large pulp chambers; greater care should be given during a coronal polish so as to not overheat the tooth
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True
