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.Management Sciences
Category: Periodontal Ligament
All of the following cells of periodontal ligament are of mesenchymal origin except______________?
A. Fibroblasts
B. Multi totipotent cells
C. Cementoblasts
D. Cell rests of malassez
Fibres of periodontal ligament embedded in the bone are_____________?
A. Sharpey’s fibres
B. Tomes fibres
C. Elastic fibres
D. Ray’s fibres
The vascular supply of the periodontal ligament is______________?
A. Greatest in the middle-third of a single rotted tooth
B. Greatest in the middle-third of a multirooted tooth
C. A net like plexus that runs closer to the cementum than to the bone
D. A net like plexus that runs closer to the bone than to the cementum
Which of the following is not the principle fibre group of the periodontal ligament___________?
A. Horizontal
B. Oblique
C. Alveolar crest
D. Transseplat
Bone adjacent to periodontal ligament that contains a great number of sharpey’s fibres is known as______________?
A. Lamina dura
B. Bundle bone
C. Lamina propria
D. Lamina densa
The most abundant principle fibre group in periodontal ligament is____________?
A. Horizontal
B. Transeptal
C. Apical
D. Oblique
Width of the periodontal ligament is least at______________?
A. Cervical third
B. Apical third
C. Fulcrum of rotation
D. It has uniform width
Remnants of the Hertwig’s root sheath are found in____________?
A. Gingiva
B. Alveolar bone
C. Periodontal ligament
D. Cementum
The component of future T.M.J shows development at _____________?
A. 6 weeks
B. 10 weeks
C. 18 weeks
D. 16 weeks
Cementicles are found in the_____________?
A. Gingiva
B. Periodontal ligament
C. Alveolar bone
D. Cementum
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