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. Maxillary incisors are are lingual to mandibular incisors






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






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






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






5. Horizontal distance of anterior teeth in crossbite






6. Vertical overlapping






7. Later






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






9. Curved alignment of the occlusal plane when looking from a lateral view(distal to mesial)






10. Mandibular molars more distal than maxillary molars






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






12. 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






13. #10 & #23






14. 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






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






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






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






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






19. Incisal 3rd






20. Tooth positioned more facial






21. 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






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






23. Crowns tipped lingually - roots tipped laterally






24. 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






25. Posterior; no horizontal overlap






26. Need tooth to tooth contact on both working and non working sides to func effectively






27. Mandibular molars and maxillary molars are even






28. Excessive deposition of cementum around the apex - due to excessive occlusal forces






29. Spaces between two teeth






30. Guidance for protrusive occ should be on the






31. Maxillary - Mandibular - Facial






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






33. #7 - 26 - 27






34. II (mal)occlusion






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






36. Mobility - migration - pain - premature contact - widening of PDL - parafuntional habits - TMJ problems - all result in _________






37. Class III (mal)occlusion of permanent teeth






38. 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






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






40. Above occlusal plane






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






42. The way you normally bite your teeth together when not chewing






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






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






45. 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






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






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






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






49. Overlap of anterior teeth






50. Tongue thrust or thumb sucking can cause