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






2. Tooth-tooth contacts; tooth-hard objects contacts; tooth-oral tissues contact






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






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






5. Both sides






6. Retrognathic profile






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






8. Tooth positioned more lingual






9. Maxillary anterior teeth stick out labially from tongue thrusting






10. Patients show evidence or signs and syptoms of occ disease






11. Mandibular molars more distal than maxillary molars






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






13. Cervical 3rd






14. 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






15. Maximum touching of max and mand






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






17. Starts closer to the posterior of the 1st molar






18. Relationship of the arches bone to bone;






19. ____ is not a sign of occl trauma






20. Horizontal distance of anterior teeth in crossbite






21. Radiographically - the PDL space is wider at the coronal third of the root






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






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






24. Buck teeth are common and are considered






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






26. Overlap of anterior teeth






27. Spaces between two teeth






28. Below occlusal plane






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






30. Occlusal guard =






31. Tooth positioned more facial






32. Relationship of teeth in which the incisal ridges or buccal cusp ridges of the maxillary anterior teeth extend facially to the incisal ridges/cusps of the mandibular teeth when the teeth are in centric occlusion relationship






33. Measurement of horizontal overlap w/ probe






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






35. Incisal 3rd






36. 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






37. Later






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






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






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






41. Crowns tipped lingually - roots tipped laterally






42. Rotated or twisted; rotated mesial or distal






43. Maxillary incisors are are lingual to mandibular incisors






44. 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






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






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






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






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






49. Horizontal






50. 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