A. Triple pleated sheath
B. Mostly contains glycine residues
C. Exhibit cross striations at 64 μm
D. Intracellular in nature
0
Which of the following is not the principle fibre group of the periodontal ligament___________?
0
A special feature of the periodontal ligament fibroblasts is______________?
A. Horizontal
B. Oblique
C. Alveolar crest
D. Transseplat
0
The component of future T.M.J shows development at _____________?
A. The number or organelles
B. Presence of actin fibres and shape change
C. size of the cells
D. Collagen fibre formation
0
Centre of the disc in TMJ is_____________?
A. 6 weeks
B. 10 weeks
C. 18 weeks
D. 16 weeks
0
Narrowing of periodontal ligament in labially placed mandibular canine with age is due to_____________?
A. Avascular
B. Devoid of nervous tissue
C. Avascular & deviod of nervous tissue
D. None of the above
0
The main function of horizontal fibres of P.D ligament is____________?
A. Due to deposition of cementum and bone
B. Down growths of gingival epithelium
C. Gingival cysts formed from cell rests
D. Reversal of function of horizontal and oblique fibres
0
The rest of malassez in the periodontal ligament are derived from_____________?
A. Prevent extrusion
B. Prevent rotation
C. Maintains the mesiodistal width
D. All of the above
0
The most abundant group of fibres in the PDL are_____________?
A. Dental pulp
B. Lamina propria
C. Odontogenic epithelium
D. Vestibular lamina
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