A. Incremental lines of retzius
B. Perikymata
C. Imbrication lines of pickerill
D. Wickham’s striae
Related Mcqs:
- Smooth surface caries is characterized by spread of caries in enamel and dentin as cones. These alignment in enamel and dentin is____________?
A. Base to base
B. Apex to base
C. Apex to apex
D. None of the above - Progression of dental caries caries on pit and fissure occurs from:
A. Apex of the pit and fissure
B. Wide and of the pit and fissure
C. Lateral surface of the pit and fissure
D. Bottom of the pit and fissure - Ratio of diameter of enamel rods in the DEJ to the enamel surface is______________?
A. 1:4
B. 1:1
C. 1:2
D. 2:1 - Most demineralised zone in enamel caries:____________?
A. Translucent zone
B. Body of lession
C. Dark zone
D. Surface zone - Temporary structures in enamel organ are (before enamel formation) ?
A. Enamel knot
B. Enamel cord
C. Both A and B
D. Enamel Cuticle - An asymptomatic tooth has deep has deep caries on occlusal surface. Radiograph shows radiopaque mass at apex of the tooth: this mass is most likely to be:____________?
A. Cementoma
B. Condensing Osteitis
C. Chronic apical periodontitis
D. Acute apical periodontitis - Organism involved in smooth surface caries is____________?
1 Streptococcus mutans
2 Actinomyces viscosus
3 Lactobacillus
4 CampylobacterA. only 1
B. only 2
C. 1 and 3
D. All of the above - A deep pit lined by enamel seen in the lingual surface of Maxillary lateral incipor is most likely to be_______________?
A. Dens in dente
B. Enamel Hypoplasia
C. Talon’s cusp
D. Enamel Pearl - Ionic exchange between enamel surface and environment______________?
A. Does not take place once enamel surface and invironment
B. Stops after 2 years of eruption
C. Continues till adult life
D. Continues through out life - The shallow furrows on the enamel surface, where stria of Retzius end are known as _______________ ?
A. Cracks
B. Pellicle
C. perikymata
D. Enamel lamellae
