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






2. Habitual - acquired - convenience - intercuspal & static






3. 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






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






5. During selective grinding - occlusion should be adjusted In what four relationships






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






7. Occlusal guard =






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






9. 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






10. Guidance for protrusive occ should be on the






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






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






13. During protrusive occ - ______ is considered undesirable






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






15. Maxillary overlap mandibular; whole arch






16. Incisal 3rd






17. 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






18. 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






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






20. Rotated or twisted; rotated mesial or distal






21. Mandible moves to the right or left






22. Maximum interlocking of cusp






23. Laterally






24. Crowns tipped lingually - roots tipped laterally






25. Excessive occ force with adequate bone support =






26. Tongue thrusting; thumb sucking - pacifiers






27. Spaces between two teeth






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






29. Mesially - Labially






30. Both sides






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






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






33. Symptom free dentition that 'survives' or 'adapts' to a deviated occl






34. Mand. retruded-one or more max. incisors retruded; max. laterals protruded-max centrals retruded; crowded max anterior teeth; deep overbite






35. Overclosure of the anterior teeth can cause trauma to the gingiva of the max teeth






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






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






38. Maxillary incisors are are lingual to mandibular incisors






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






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






41. Primary teeth set ___________________ for permanent






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






43. Above occlusal plane






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






45. Anterior; no horizontal overlap






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






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






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






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






50. Class III (mal)occlusion of permanent teeth