Test your basic knowledge |

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






2. Mand. retruded-one or more max. incisors retruded; max. laterals protruded-max centrals retruded; crowded max anterior teeth; deep overbite






3. The way you normally bite your teeth together when not chewing






4. Malocclusion cause excessive incisal or occlusal wear(attrition); teeth continue to erupt in order to occlude with teeth in the opposite arch & roots become exposed






5. Teeth are misaligned when biting together






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






7. 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






8. Curve spee & wilson - 3-d - not proven






9. Middle 3rd






10. Any occl that produces forces that directly or indirectly cause injury to the attachment apparatus






11. Curved alignment of the occlusal plane when looking from a lateral view(distal to mesial)






12. Tooth extracted






13. ____ is not a sign of occl trauma






14. Reshaping of the occ or incisal surfaces of teeth to create contacts btwn upper and lower dentition






15. Contact between maxillary incisors does not line up with contact of mandibular incisors






16. Anterior teeth do not occlude - or remain open - while posterior teeth may have a normal occlusion






17. Maximum interlocking of cusp






18. Occlusal guard =






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






20. A tooth that occludes with an opposing tooth before full closure is achieved in centric occlusion






21. Maxillary - Mandibular - Facial






22. 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






23. Vertical overlapping






24. Position of the mandible relative to the maxilla during swallowing and other times when the jaw muscles contract






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






26. Abnormal contacts; occlusal habits - and neuroses






27. 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






28. Mand. retruded-max. incisors protruded; deep overbite; excessive overjet - abnormal muscle function - short mandible - short upper lip






29. Deciduous molars and canines are wider than permanent premolars and canines; space saved during mesial drift of permanent molars






30. Tooth positioned more lingual






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






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






33. Cervical 3rd






34. Mand. facial or lingual to max. - unitlateral or bilateral; incorrect horizontal overlap






35. Prognathic profile






36. Posterior; no horizontal overlap






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






38. Severe ging inflammation extending into CT attachment - loss of supporting alveolar bone - pregnancy - ortho mvmt - and surgical therapy - may all cause ______






39. High restoration - parafunctional habits - malpositioned tooth - periapical abcess - physical 'blow' - removable partial - ortho mvmt






40. Usually indicative of moderate to sever perio and secondary occ trauma






41. Symptom free dentition that 'survives' or 'adapts' to a deviated occl






42. The tooth has insufficient bone support and normal chewing and swallowing forces are excessive - causing injury to the attachment appartatus






43. Mandibular molars and maxillary molars are even






44. Growth hormone imbalance that causes the mandible to grow faster than the maxilla(all teeth are in crossbite)






45. Maximum touching of max and mand






46. Crowns tipped lingually - roots tipped laterally






47. 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






48. Functional occlusion






49. #7 - 26 - 27






50. Injury to the attachment apparatus (bone - PDL - and cementum) as a consequence of normal or excessive occ forces