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. Mesially - Labially






2. Aquired centric occlusion - habitual occlusion - convienience occlusion - or intercuspal position






3. 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






4. Tongue thrusting; thumb sucking - pacifiers






5. Anterior or posterior; bilateral or unitlateral - anterior more common






6. The side to which the mandible moves(chewing side)






7. Retrognathic profile -buccal groove of mand. 1st molar-distal to mb cusp of 1st max.molar -distal of mand canine distal to mesial of max canine - tendency towards class II






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






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






10. Malposition - crowded anterior teeth - protruded or retruded max incisors - anterior/posterior crossbite - mesial drift






11. Individual teeth from each arch can be involved in ________________ malocclusion






12. Curved alignment of the occlusal plane when looking from a posterior view(right to left)






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






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






15. Survival of the dentition despite its deviation from a preconceived hypothetical normal






16. 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






17. Cusps of maxillary teeth directly over cusps of mandibular teeth






18. Teeth are misaligned when biting together






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






20. Both sides






21. What is not affected by occ trauma






22. Cervical 3rd






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






24. Excessive occ force with adequate bone support =






25. Maxillary anterior teeth stick out labially from tongue thrusting






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






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






28. Mandibular molars more mesial than maxillary molars (most children)






29. Max. incisors lingual to mand. incisors; incorrect horizontal overlap






30. #10 & #23






31. 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






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






33. When the jaws are closed - the buccal cusps of the mandibular posterior teeth are interlocked between the buccal & lingual cusps of the maxillary teeth






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






35. Vertical overlapping






36. If the mandible moves to the left - the mvmt is known as a left working movement






37. Habitual - acquired - convenience - intercuspal & static






38. II (mal)occlusion






39. 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






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






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






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






43. 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






44. During a left working movement - the right side is known as the






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






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






47. Functional occlusion






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






49. Retrognathic profile; buccal groove of mand 1st molar-distal to mb cusp of max 1st; distal of mand. canine distal to mesial to max caniine - tendency toward class II






50. Primary teeth set ___________________ for permanent