Tutor Oral Biology Quiz
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Which of the following is not the principal fiber group of the periodontal ligament
A. Horizontal
B. Oblique
C. Alveolar crest
D. Trans septal
What is the largest portion in ductal system
A. Parotid
B. Submandibular
C. Sublingual
Which of the following occurs during the early stage of eruption of the tooth
A. Maturation of enamel
B. Formation of dental sac
C. Differentiation of the stratum intermedium
D. Formation of stellate reticulum
What are the highest bacteria population at dorsum of tongue?
A. S.oralis
B. S.sangius
C. S.mutans
D. Actinomyces spp.
Which of the following is Not the phase of physiological tooth movement?
A. Post-eruptive movement
B. Eruptive movement
C. Pre-eruptive movement
D. Para Eruptive movement
Choose the correct statement about dental follicle theory
I. Giving rise to periodontal ligament
II. Playing important role in development of root
III. Acting as a course of odontoblasts
IV. Providing a pathway for osteoclasts which is required for bone remodelling
A. I and II only
B. II and III only
C. I, II and III
D. I, II and IV
There are the early colonizers at our tooth surface, except
A. S.oralis
B. P.intermedia
C. S.sangius
D. gingivalis
Hormone changes that will cause periodontal problem in menopause patients
A. Leptin
B. Androgen
C. Estrogen
D. Progesteron
Tooth shedding is predominantly the
A. Physiologic loss of impacted teeth
B. Pathologic loss of non-vital primary teeth
C. Physiologic loss of permanent teeth
D. Physiologic loss of primary teeth
Which of the following cells are the predominant connective tissue cells of the periodontal ligament?
A. Cementoblasts
B. Fibroblasts
C. Osteoblasts
D. Cell rest of Malassez
The space of incisal edge of the teeth during opening phase is
A. 12 to 14mm apart
B. 16 to 18mm apart
C. 18 to 20mm apart
D. 16 to 20mm apart
During remineralisation, there will be an increase in:
A. acidic environment in the mouth.
B. calcium ion withdraw from the dental enamel.
C. phosphate ion withdraw from the dental enamel.
D. absorption of calcium ion into the dental enamel.
E. absorption of hydrogen ion into the dental enamel.
The periodontal ligament
A. Derives its blood primarily from the branches of vessels entering the pulp
B. Has a slow rate of turn over
C. Contains epithelial cells
D. Comprises primarily of type II collagen
A patient presented with a full permanent dentition, except for the third molars. On the right side of the dental arch, the mesiobuccal cusp of the upper first molar occludes into the embrasure between the lower first molar and second premolar. Classify the molar relationship.
A. Class I
B. Class II
C. Class II division I
D. Class III
E. Unclassified
which of the following bones immediately surrounding to roots and giving support for insertion of periodontal fibers is most likely called
A. woven bone
B. spongy bone
C. supporting bone
D. alveolar bone proper