ch 12 study q's
the root of the mandibular second premolar is ______ than the roots of the maxillary premolars but_________ than that of a mandibular first premolar A. smaller; longer B. smaller; shorter C. longer; shorter D. shorter; longer
The answer is
how many canines are in a quadrant of the permanent dentition? A. 1 B. 2 C. 4 D. 8
The answer is A
how many premolars are there in the primary dentition A. 0 B. 4 C. 6 D. 8
The answer is A
most maxillary first premolars have a root that is divided into A. two roots-buccal and lingual B. two roots- mesial and distal C. three roots- two mesial and on distal D. three roots- two buccal and one lingual
The answer is A
the developmental groove that crosses marginal ridges and allows food to escape during mastication is the ______ groove A. marginal B. triangular C. central D. supplemental
The answer is A
using the universal/national teeth-numbering system, what are the numbers for the permanent third molars A. 1, 16, 17, 32 B. 3, 14, 19, 30 C. 6, 11, ,22 ,27 D. 2, 15, 18, 31
The answer is A
which of the following is true of the mandibular canine tooth? A. it has a less well-developed cingulum than a maxillary canine B. it has a larger and more developed cusp than the maxillary canine does C. it has a sharper cusp tip than a maxillary canine does D. it has a mesial cusp slope that is longer than the distal cusp slope when it first erupts, whereas the opposite is true for maxillary canine tooth
The answer is A
which of the following teeth are the largest and strongest maxillary teeth? A. first molars B. second molars C. canines D. central incisors
The answer is A
The primary teeth are classified in the universal/national teeth-numbering system using A. numbers 1 through 20 B. capital letters A through T C. a number for each quadrant and a number for each tooth D. numbers inside a bracket
The answer is B
a common anomaly of the maxillary lateral incisors that is characterized by unusually large open contacts is called A. pegged laterals B. diastemas C. fused laterals D. dens in dente
The answer is B
canines are also commonly referred to as A. wisdom teeth B. eyeteeth C. cuspids D. bicuspids
The answer is B
how many premolars are in one arch of the permanent dentition? A. 2 B. 4 C. 6 D. 8
The answer is B
in the universal system, the permanent maxillary first premolars are A. #4 and # 13 B. #5 and #12 C. #20, # 21., #28, and #29 D. #34, #35, #44, and #45
The answer is B
the root of the maxillary lateral incisor is A. the same width as the root of the maxillary central incisor B. longer than the root of a central incisor C. a bifurcated root D. the same size as the root of the mandibular lateral incisor
The answer is B
which of the following features of the posterior permanent dentition is associated with the termination of triangular grooves? A. central fossa B. triangular fossa C. central groove D. inclined cuspal plane
The answer is B
which of the following is true regarding differences between the maxillary and mandibular central incisors? A. mandibular central incisors are larger than the maxillary central incisors in all dimensions B. labial surfaces of the maxillary central incisors are more rounded from the incisal aspect than those of the mandibular central incisors C. the cingulum in less prominent on the maxillary central incisors than the cingulum on the mandibular central incisors D. the marginal ridges are more prominent on mandibular incisors than they are on maxillary incisors
The answer is B
which of the following premolar teeth normally has a bifurcated root? A. mandibular first premolar B. maxillary first premolar C. maxillary second premolar D. mandibular second premolar
The answer is B
which of the following teeth are the smallest and most symmetric teeth in the permanent dentition? A. maxillary lateral incisors B. mandibular central incisors C. mandibular canines D. maxillary central incisors
The answer is B
which of the following teeth in the permanent dentition will replace the primary second molars? A. mandibular first premolar B. maxillary first premolar C. maxillary second premolar D. mandibular second premolar
The answer is B
which of the following terms is used to describe the rounded enamel extension on the incisal edge of newly erupted central and lateral incisors A. cusp B. mamelon C. diastema D. fossa
The answer is B
how many molars are present in the line permanent dentition? A. 3 B. 4 C. 12 D. 16
The answer is C
premolars and molars are used for _____ food A. tearing B. cutting C. chewing D. shearing
The answer is C
the incisal plane of an anterior tooth is also known as the A. facial surface B. labial surface C. incisal edge D. incisal ridge
The answer is C
the lingual surfaces of anterior teeth have rounded raised borders on the mesial and distal surfaces that are called A. the cingulum B. fossae C. marginal ridges D. mamelons
The answer is C
the maxillary second premolar differs from the maxillary first premolar in the A. cusps of second premolars are sharper than those of first premolars B. first premolar is narrower buccolingually than mesiodistally C. lingual cusp is smaller than the buccal cusp on the maxillary second premolar D. maxillary second premolar usually has one root
The answer is C
which of the following adult teeth is nonsuccedaneous? A. maxillary left second premolar B. maxillary right canine C. maxillary right first molars D. mandibular right lateral incisors
The answer is C
which of the following teeth may have a supplemental cusp A. premolars B. central incisors C. maxillary first molars D. maxillary second molars
The answer is C
which of the following types of teeth in the primary dentition are replaced by first premolars in the adult dentition? A. incisors B. canines C. first primary molar D. second primary molar
The answer is C
the maxillary second premolar differs from the maxillary first premolar in that the: A. a distobuccal cusp slope is shorter than the mesiobuccal cusp slope on the second premolar B. cusps of the maxillary first premolar are not as sharp as the maxillary second premolar C. lingual cusp is larger and almost the same height as the buccal cusp on the maxillary second premolar D. second premolar is wider mesiodistally than buccolingually
The answer is C`
the ______ play an important role in a persons appearance: A. molars B. posterior teeth C. premolars D. anterior teeth
The answer is D
the mandibular central incisors are A. larger than the maxillary lateral incisors B. larger than the maxillary canines C. larger than the mandibular canines D. smaller than the mandibular lateral incisors
The answer is D
what is the canine eminence? A. a cusp B. a canus C. an imbrication line D. a bony ridge
The answer is D
which of the following permanent maxillary teeth normally have three roots? A. incisors B. canines C. premolars D. first molars
The answer is D
which of the following teeth are most likely to be out of position in the dental arch? A. maxillary central incisors B. mandibular incisors C. mandibular first molars D. maxillary third molars
The answer is D