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






2. #10 & #23






3. Any deviation from the ideal or normal occl. includes crowding - malpositioned or tipped teeth






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






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






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






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






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






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






10. Tooth positioned more facial






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






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






13. What is not affected by occ trauma






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






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






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






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






18. 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






19. Vertical overlapping






20. Both sides






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






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






23. Functional occlusion






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






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






26. Relationship of the teeth in opposite arches; static position






27. Mandible moves to the right or left






28. 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






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






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






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






32. Maximum interlocking of cusp






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






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






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






36. 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






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






38. #7 - 26 - 27






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






40. Measurement of horizontal overlap w/ probe






41. Starts around the mesial of the 1st molar






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






43. ____ is not a sign of occl trauma






44. Cervical 3rd






45. 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






46. Below occlusal plane






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






48. Habitual - acquired - convenience - intercuspal & static






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






50. 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