THEME 4. Types of occlusion. Their descriptions and signs.

1. What is an occlusal curve, passing from incisors to the distal cusps of third molar named?

A) *sagittal;

B) transversal;

C) horizontal;

D) vertical;

E) parasagittal;

2. What is an occlusal curve, passing through the masticatory surfaces of molar to the right and left side in transversal direction named?

A) *transversal;

B) sagittal;

C) vertical;

D) horizontal;

E) parasagittal.

3. Closing of dental arches or separate groups of opposite teeth is:

A) *occlusion;

B) articulation;

C) rotation;

D) contraction;

E) bruxism;

4. Closing of dental arches with maximum intercuspation is:

A) *central occlusion;

B) anterior occlusion;

C) lateral occlusion(right);

D) lateral occlusion (left);

E) posterior occlusion;

5. What occlusion is formed by jaw translation from central to anterior and lateral occlusions?

A) *eccentric;

B) centric;

C) central;

D) posterior;

E) anterior.

6. What is the name of term, which combines central occlusion, slide in centric and posterior contact position (central relation)?

A) *centric occlusion;

B) central occlusion;

C) bite;

D) anterior occlusion;

E) lateral occlusion.

7. What is relation between dental arches in central occlusion named?

A) *bite;

B) mediotrusion;

C) protrusion;

D) laterotrusion;

E) bruxism.

8. What type of occlusion are the lateral movements of lower jaw impossible at?

A) *posterior;

B) anterior;

C) central;

D) lateral (left);

E) lateral (right).

9. What position is a lower jaw set at bilateral contraction of lateral pterygoid muscles?

A) *anterior occlusion;

B) posterior occlusion;

C) central occlusion;

D) lateral (left) occlusion;

E) lateral (right) occlusion.

10. What bite from the list below is considered as normal?

A) *orthognatic;

B) distal;

C) mesial;

D) opened;

E) deep;

11. What teeth from the list below do have the only one antagonist?

A) *31; 41; 38; 48;

B) 11; 12; 18; 28;

C) 33; 34; 25; 15;

D) 31; 41; 18; 28;

E) 11; 12. 18; 28;

12. What type of bite mesial buccal cusp of first upper molar fits at the buccal surface of lower first molar, in a fissure between his buccal cusps?

A) *orthognatic;

B) distal;

C) mesial;

D) cross;

E) squint.

13. What type of bite is it if mesial buccal cusp of first upper molar fits with the same cusp of first lower molar, and sometimes gets in a fissure between second premolars and mesial buccal cusp of first lower molar?

A) *distal;

B) orthognatic;

C) mesial;

D) cross;

E) deep;

14 What type of bite is it if there is vertical gap between frontal teeth?

A) *open;

B) orthognatic;

C) deep;

D) mesial;

E) cross

15. What bite is accompanied by the location of buccal cusps of lower lateral teeth externally from the same name overhead at the normal incisor ceiling or lower lateral teeth are displaced in relation to overhead in a tongue side at reverse correlation of incisors?

A) *cross;

B) deep;

C) mesial;

D) opened;

E) distal.

16. What does the cuttings edges of frontal teeth and masticatory surfaces of molar and premolar form?

A) *occlusal plane;

B) occlusal surface;

C) tongue surface;

D) palatal surface;

E) lip surface.

17. What is a motion of condylar downward and forward named?

A) *sagittal articular path;

B) lateral articular path;

C) vertical articular path;

D) horizontal articular path;

E) transversal path.

18. What is the way of condylar inward and downward named?

A) *lateral articular path;

B) vertical articular path;

C) sagittal articular path;

D) horizontal articular path;

E) transversal.

19. What is the way of lower incisors on the palatal surface of upper incisors at motion of lower jaw from central occlusion in anterior occlusion named?

A) *sagittal incisor path;

B) lateral incisor path;

C) lateral articular path;

D) horizontal incisor path;

E) vertical incisor path;

20. What is the way of lower incisors on the palatal surface of upper incisors at motion of lower jaw from central occlusion in lateral named?

A) *lateral incisor path;

B) sagittal incisor path;

C) horizontal incisor path;

D) vertical incisor path;

E) transversal

21. What is a plane which can be determined at an intact dental arch between the following three points: point between cuttings edges of lower central incisors and distobuccal cusp of the second lower molar called?

A) *prosthetic;

B) transversal.

C) sagittal;

D) vertical;

E) occlusal;

22. Hinge axis is:

A. *a line that passes through the left and right mandibular condyles and coincides with the center of rotation of the mandible.

B. a line that passes through the left mandibular condyles and coincides with the center of rotation of the mandible.

C. a line that passes through the right mandibular condyles and coincides with the center of rotation of the mandible

D. a line that passes through the left and right mandibular condyles.

E. a line that passes through the left and right mandibular condyles at any mandible movement

23. What methods of determination of central relation do you know?

A. *manual and graphic.

B. phonetic, electro-physiological, graphic

C. manual, graphic, relaxing.

D. electro-physiological, manual, graphic

E. graphic, electro-physiological.

24. A mixed dentition consists of the following:

A. *Deciduous and permanent teeth existing simultaneously in a child's mouth

B. Deciduous teeth that are ankylosed

C. Permanent teeth that are rotated

D. Supernumerary permanent teeth

25. If a tooth is numbered 30 in the universal numbering system, what is the same tooth numbered in the opposite quadrant of the same arch?

A. *19

B. 3

C. 14

D. 18

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