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Dentistry Occlusion

Instructions:
  • Answer 50 questions in 15 minutes.
  • If you are not ready to take this test, you can study here.
  • Match each statement with the correct term.
  • Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. Radiographically - the PDL space is wider at the coronal third of the root






2. Transverse occlusal curvature; posterior teeth; medio-lateral postion (r-l)






3. Occlusal forces will accelerate the rate of perio destruction and result in CT attachment loss in the presence of preexisting inflammation






4. Below occlusal plane






5. Teeth are misaligned when biting together






6. Does not result from brushing at all - but from traumatic lateral forces placed on the teeth as a result of a malocclusion or abnormal tongue activity. Root surface is exposed & can become carious






7. Teeth that are in func when the mandible moves in lateral or protrusive excursions or mvmts






8. Incisal 3rd






9. Permits healing of the attachment apparatus by holding a tooth in a totally fixed position; allows the PDL to become narrower and the mobility to be reduced






10. Vertical overlapping






11. Widening of the PDL in areas under pressure results due to






12. Middle 3rd






13. Above occlusal plane






14. ____ is not a sign of occl trauma






15. Need tooth to tooth contact on both working and non working sides to func effectively






16. Mvmt of the mandible in a direction anterior to centric occ






17. Tongue thrust or thumb sucking can cause






18. A continuation of the spee of to extend through the condyle






19. Prognathic profile; buccal groove of mand. 1st molar-mesial to mb cusp of max. 1st molar; distal of mand. canine mesial to mesial of max canine; tendency toward class III






20. Max canine occludes with mand. canine and mand. 1st premolar.






21. Lateral mvmt results in contact btwn the max and mand canines






22. Most retruded position of the mandible in relation to the maxilla From which lateral mvmts of the jaw can be made






23. Maxillary - Mandibular - Facial






24. Tongue thrusting; thumb sucking - pacifiers






25. Difference between primary and secondary occ trauma






26. Cervical 3rd






27. Patient forces teeth together in centric occlusion on one side to get a more functional bite and has a crossbite on the other side(the midline of the maxillary anterior teeth does not line up with the midlineof the mandible






28. Lateral mvmt results in contacct of all posterior teeth






29. When one tooth hits before all others when closing teeth together(may cause TMJ problems)






30. Relationship of the teeth in which the incisal ridges of the maxillary anterior teeth extend below the incisal edges of the mandibular anterior teeth when the teeth are placed in a centric occlusal relationship






31. Laterally






32. Muscles that work the jaw; may become sore due to occ trauma






33. Relationship of the teeth in opposite arches; static position






34. Mandibular molars more distal than maxillary molars






35. Both sides






36. Guidance for protrusive occ should be on the






37. Most common cause is when the maxilla does not grow in proportion to the mandible






38. Can be caused by forces of malocclusion - teeth can become loose - periodontal disease may develop(alveolar bone loss)






39. Maximum touching of max and mand






40. Maxillary-between canines and laterals - mandibular-between canines and 1st molars






41. Maximum interlocking of cusp






42. Normal contacts between max. and mand. teeth; momentary contacts






43. Associated with performance; all contacts during function of the oral cavity






44. #10 & #23






45. Buck teeth are common and are considered






46. Slight buccal inclination of crown - lingual inclination of root






47. Because the permanent premolars are narrower than the primary molars that they replace - this is what happens when the premolars erupt






48. Tooth positioned more facial






49. Horizontal






50. The patient is constantly tightening the lower lip against the lower anterior teeth causing the the mandibular teeth to be pushed back into the mouth by this overdeveloped lower lip