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. Mb cusp of max 1st molar-buccal groove of mand 1st molar






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






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






4. Maxillary incisors are are lingual to mandibular incisors






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






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






7. Overlap of anterior teeth






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






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






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






11. Maxillary anterior teeth stick out labially from tongue thrusting






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






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






14. During protrusive occ - ______ is considered undesirable






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






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






17. Habitual - acquired - convenience - intercuspal & static






18. Mesially - Labially






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






20. Mobility - migration - pain - premature contact - widening of PDL - parafuntional habits - TMJ problems - all result in _________






21. Anterior; no horizontal overlap






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






23. Maxillary overlap mandibular; whole arch






24. Middle 3rd






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






26. 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






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






28. Horizontal distance of anterior teeth in crossbite






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






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






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






32. 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






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






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






35. 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






36. Tongue thrusting; thumb sucking - pacifiers






37. Maximal intercuspation or contact of the max and mand teeth






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






39. ____ is not a sign of occl trauma






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






41. Horizontal






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






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






44. Mandibular molars and maxillary molars are even






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






46. Tooth extracted






47. Both sides






48. After periodontal sugery - mobility will ________






49. Overclosure of the anterior teeth can cause trauma to the gingiva of the max teeth






50. Teeth are misaligned when biting together