Updated Medical MCQs – Latest Decidous Dentition ( Oral Anatomy ) MCQs
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Latest Medical MCQs
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Latest Decidous Dentition ( Oral Anatomy ) Mcqs
The most occurred mcqs of Decidous Dentition ( Oral Anatomy ) in past papers. Past papers of Decidous Dentition ( Oral Anatomy ) Mcqs. Past papers of Decidous Dentition ( Oral Anatomy ) Mcqs . Mcqs are the necessary part of any competitive / job related exams. The Mcqs having specific numbers in any written test. It is therefore everyone have to learn / remember the related Decidous Dentition ( Oral Anatomy ) Mcqs. The Important series of Decidous Dentition ( Oral Anatomy ) Mcqs are given below:
Resorption of root of primary incisors starts at_____________?
A. 4 yrs
B. 8 yrs
C. 6 yrs
D. 10 yrs
Which among the following is NOT a common finding of the decidous dentition ?
A. Tight contacts, absence of spacing
B. Flush terminal plane
C. Shallow overjet and overbite
D. Ovoid arch form
The sharpest cusp of primary first molar tooth is____________?
A. Distobuccal
B. Mesiobuccal
C. Mesiolingual
D. Distolingual
Difference between primary and permanent enamel is_______________?
A. In prism arrangement
B. No difference in enamel, difference in dentin
C. in mineral content
D. None of the above
Among the difference between teeth in the decidous and the permanent dentition is that_____________?
A. Cervical ridges are more pronounced in permanent molars
B. Buccal surfaces of the permanent molars are flatter
C. Root trunks of decidous teeth are larger compared with their overall root lengths
D. Crowns of decidous incisors are wider mesiodistally than their cervico incisal lengths
Mesiodistal width is more than cervico- incisal length of crown in_____________?
A. Permanent maxillary canines
B. Decidous maxillary central incisors
C. Permanent central incisors
D. Permanent mandibular lateral incisors
The highest ( longest ) and sharpest cusp on the decidous mandibular first molar is____________?
A. Mesiolingual
B. Mesiobuccal
C. Distolingual
D. Distobuccal
Transverse ridge is prominent on occlusal surface of which of the following decidous teeth ?
A. Mandibular first molar
B. Mandibular second molar
C. Maxillary first molar
D. Maxillary second molar
Primary teeth differ from permanent teeth in following aspects ?
A. Pulp chambers are longer
B. Thickness of enamel and dentin
C. Roots are flaring
D. All of the above
Pulp chambers and roots canals in decidous teeth______________?
A. Shallow and narrow
B. Wide and deep
C. Wide and narrow
D. Shallow and wide
When viewed occlusally, a primary mandibular second molar closely resembles which of the following mandibular teeth ?
A. Second premolar
B. Permanent first molar
C. Permanent second molar
D. Primary first molar
Roots of primary and secondary teeth are different in that the primary roots are more divergent and flaring. The other difference _____________?
A. Primary roots show less a accessory and lateral canals
B. Primary roots are shorter
C. Primary roots resorb more easily
D. None of the above
How many roots does a primary maxillary first molar have ___________?
A. Two
B. One
C. Three
D. Four
How many cusps does the crown of the maxillary first primary molar have ?
A. 3
B. 2
C. 4
D. 5
The largest mesiodistal diameter in primary dentition is____________?
A. Maxillary 2nd molar
B. Mandibular 2nd molar
C. Mandibular 1st molar
D. None of the above
During the development of a tooth, sound coalescence of the lobes results in_____________?
A. Grooves
B. Cusps
C. Fissures
D. All of the above
The crowns and roots of primary molar at their cervical portions are more____________?
A. Slender mesiodistally
B. Bulkier mesiodistally
C. Slender anteroposteriorly
D. Buliker anteroposteriorly
The pulp of first primary molar contains________________?
A. Four pulp horn and three root canal
B. Two pulp horn and two root canal
C. Three pulp horn and three root canal
D. Two pulp horn and three root canal
What is the thickness of the layer of primsless enamel found in primary teeth_____________?
A. 25 μm
B. 75μm
C. 50μm
D. 100μm
The direction of enamel rods in decidous teeth is_____________?
A. Inclined in an apical direction in the cervical third of crown
B. Same as permanent teeth
C. Inclined in an occlusal direction in the cervical third of crown
D. None of the above
With respect to their permanent successors the sum of the mesidodistal diameters of the first and second decidous molar is generally ____________?
A. The same
B. Greater
C. Less
D. Not related
Cusp of carbaelli can be considered a normal finding on____________?
A. Decidous maxillary 1st molar
B. Decidous mandibular 1st molar
C. Decidous maxillary 2nd molar
D. Decidous mandibular 2nd molar
How many pulpal horns are there in the mandibular second primary molar ?
A. 6
B. 3
C. 4
D. 5
Which statement is correct about decidous dentition?
A. The primary dentition is initiated at 10th month in uterus
B. Mandibular first molar erupts at one and half years of age
C. The crowns of primary dentition are more yellowish than permanent
D. Calcification of maxillary primary first premolar is completed at birth
Cervical bulge. True is____________?
A. Results in constriction at cervical region
B. Enamel rods at cervical region directed occlusally
C. Is characteristic of decidous teeth
D. All of the above
In the majority of situations, that first decidous tooth to erupt is the____________?
A. Mandibular central incisor
B. Maxillary central incisor
C. Mandibular first molar
D. Maxillary second molar
The primary lateral incisors begin to calcify about the_____________?
A. 4th month in utero
B. 4th month of life
C. 41/2 month in utero
D. 5th month in utero
The primary teeth that present the most outstanding morpholgic deviations from permanent teeth are______________?
A. Mandibular second molar
B. Mandibular first molar
C. Central incisors
D. Canines
Which of the following has the maximum faciolingual diameter of the crown__________?
A. Decidous maxillary 2nd molar
B. Decidous mandibular 2nd molar
C. Decidous maxillary 1st molar
D. Decidous mandibular 1st molar
Primary dentition period is______________?
A. From 6 months to 11 years
B. From birth to 11 years
C. From 6 months to 6 years
D. From 6 years to 11 years
Which of the following decidous molars bears the greatest resemblance to a premolar _____________?
A. Maxillary first
B. Mandibular first
C. Maxillary second
D. Mandibular second