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 way you normally bite your teeth together when not chewing






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






3. When no teeth are contacting on this side






4. Habitual - acquired - convenience - intercuspal & static






5. 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






6. Mandibular molars more distal than maxillary molars






7. Excessive occ force with adequate bone support =






8. Later






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






10. During a left working movement - the right side is known as the






11. During protrusive occ - ______ is considered undesirable






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






13. Mandible moves to the right or left






14. Maxillary anterior teeth stick out labially from tongue thrusting






15. Maximum touching of max and mand






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






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






18. Occlusal guard =






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






20. 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






21. Tooth extracted






22. 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






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






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






25. Mesognathic profile






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






27. #7 - 26 - 27






28. 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






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






30. Prognathic profile; buccal groove of mand. 1st molar-mesial to mb cusp of max. 1st molar; distal of mand. canine mesial to mesial of max canine; tendency toward class III






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






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






33. Horizontal distance of anterior teeth in crossbite






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






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






36. Teeth are misaligned when biting together






37. Anterior; no horizontal overlap






38. Horizontal






39. Starts around the mesial of the 1st molar






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






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






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






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






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






45. Maxillary overlap mandibular; whole arch






46. Laterally






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






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






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






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