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






2. Hereditary - Tongue - Intercuspation of teeth - Alignment of previously erupted teeth affects alignment of successive teeth






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






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






5. Curve of the occlusal plane; from anterior to posterior - increases with age






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






7. When no teeth are contacting on this side






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






9. Lateral mvmt results in contacct of all posterior teeth






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






11. 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






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






13. Spaces between two teeth






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






15. Mandible moves to the right or left






16. Guidance for protrusive occ should be on the






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






18. After periodontal sugery - mobility will ________






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






20. 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






21. Habitual - acquired - convenience - intercuspal & static






22. 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






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






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






25. Tooth positioned more lingual






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. 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






28. #7 - 26 - 27






29. Primary teeth set ___________________ for permanent






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






31. Difference between primary and secondary occ trauma






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






33. Starts closer to premolars






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






35. Horizontal distance of anterior teeth in crossbite






36. Posterior; no horizontal overlap






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






38. Vertical overlapping






39. Functional occlusion






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






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






42. Rotated or twisted; rotated mesial or distal






43. Horizontal






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






45. #10 & #23






46. Laterally






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






48. 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






49. Congenitally missing teeth - Impacted teeth & size and shape of muscle and bone






50. Cervical 3rd