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. Above occlusal plane






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






3. Spaces between two teeth






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






5. 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






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






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






8. Incisal 3rd






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






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






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






12. Can affect the TMJ - muscles of mastication - pulp and integrity of restorations






13. 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






14. Relationship of the arches bone to bone;






15. Lateral mvmt results in contacct of all posterior teeth






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






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






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






19. Buck teeth are common and are considered






20. Rotated or twisted; rotated mesial or distal






21. Anterior; no horizontal overlap






22. Middle 3rd






23. Anterior crossbite; max/mand incisors-edge to edge occlusion; crowded mand. incisors






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






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






26. Guidance for protrusive occ should be on the






27. Overlap of anterior teeth






28. Tooth positioned more facial






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






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






31. Vertical






32. Crowns tipped lingually - roots tipped laterally






33. #10 & #23






34. Laterally






35. Horizontal






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






37. 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






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






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






40. After periodontal sugery - mobility will ________






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






42. 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






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






44. When no teeth are contacting on this side






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






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






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






48. Maxillary overlap mandibular; whole arch






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






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