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. Excessive occ force with adequate bone support =






2. Mandible moves to the right or left






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






4. #7 - 26 - 27






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






6. Overlap of anterior teeth






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






8. Guidance for protrusive occ should be on the






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






10. 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






11. Selective grinding should always be completed after ______ has been controlled






12. Primary teeth set ___________________ for permanent






13. Below occlusal plane






14. Horizontal distance of anterior teeth in crossbite






15. Abnormal contacts; occlusal habits - and neuroses






16. Occlusal guard =






17. Vibrational mvmt of a tooth under occ function






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






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






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






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






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






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






24. During protrusive occ - ______ is considered undesirable






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






26. What is not affected by occ trauma






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






28. Muscles that work the jaw; may become sore due to occ trauma






29. 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






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






31. Teeth are misaligned when biting together






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






33. Class III (mal)occlusion of permanent teeth






34. Measurement of horizontal overlap w/ probe






35. 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






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






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






38. Maximum interlocking of cusp






39. Mandibular molars and maxillary molars are even






40. The relationship of the teeth in the mandibular arch to those in the maxillary arch as they are brought together






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






42. When no teeth are contacting on this side






43. Retrognathic profile






44. 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






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






46. II (mal)occlusion






47. Transverse occlusal curvature; posterior teeth; medio-lateral postion (r-l)






48. 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






49. Incisal 3rd






50. Starts around the mesial of the 1st molar