A. 2 years
B. 4 years
C. 6 years
D. 8 years
Related Mcqs:
- Growth of all permanent teeth except last molars is completed by___________?
A. 6 years
B. 8 years
C. 12 years
D. 17 years - Crown formation of all permanent teeth except third molars is completed between_____________?
A. Birth to 8 years
B. Birth to 12 years
C. Birth to 6 years
D. 6 years to 12 years - Calcification of roots of decidous teeth is completed by_____________?
A. 2 years
B. 4 years
C. 6 years
D. 8 years - Which of the following is true about calcification of teeth ?
A. Calcification of primary teeth is almost complete at time of birth
B. Calcification of all primary teeth and few permanent teeth complete at birth
C. Calcification of all permanent teeth complete at birth
D. Calcification of primary teeth starts around birth - The first evidence of calcification of primary anterior teeth begins approximately between ______________?
A. 14 to 17 weeks in utero
B. 9 to 12 weeks in utero
C. 6- to 9 weeks in utero
D. 17 to 20 weeks in utero - A 20yr old patient reports with multiple swelling of the jaws. Clinical examination reveals multiple hard swellings involving the jaws and intra orally several missing teeth are noticed. Panoramic radiograph reveals multiple radio opaque lesions in the maxilla and the mandible with multiple impacted teeth and supernumerary teeth indicative of Gardeners syndrome: The above mentioned condition is______________?
A. Autosomal dominant disease
B. Autosomal recessive disorder
C. X-linked disease
D. A syndrome of unknown cause - First permanent molars begin to calcify at ______________?
A. 6 months of intra utrerine life
B. At birth
C. Before decidous incisors
D. About 1 year after birth - The most constant and valuable trait to differentiate among maxillary first, second and third molars i____________?
A. Number of roots
B. Depth of central fossae
C. Comparative size of the cusp of carabelli
D. Relative position of the distolingual grooves - According to Schour & Massler the crown completion of both permanent maxillary and mandibular first molars is________________?
A. 1½ 2 years
B. 2½ – 3 years
C. 3-4 years
D. 3-5 years - Which of the following decidous molars bears the greatest resemblance to a premolar _____________?
A. Maxillary first
B. Maxillary second
C. Mandibular first
D. Mandibular second
