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






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






3. Tooth positioned more facial






4. Maxillary incisors are are lingual to mandibular incisors






5. Incisal 3rd






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






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






8. Spaces between two teeth






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






10. Tooth extracted






11. 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






12. Horizontal distance of anterior teeth in crossbite






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






14. II (mal)occlusion






15. 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






16. Vibrational mvmt of a tooth under occ function






17. Maxillary - Mandibular - Facial






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






20. Cervical 3rd






21. 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






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






23. Maximum touching of max and mand






24. Both sides






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






26. The permanent molars erupt posterior to the primary teeth and push them all mesially






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






28. Tongue thrusting; thumb sucking - pacifiers






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






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






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






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






33. Tongue thrust or thumb sucking can cause






34. Measurement of horizontal overlap w/ probe






35. Below occlusal plane






36. Excessive occ force with adequate bone support =






37. Survival of the dentition despite its deviation from a preconceived hypothetical normal






38. Tooth-tooth contacts; tooth-hard objects contacts; tooth-oral tissues contact






39. Middle 3rd






40. Functional occlusion






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






42. Habitual - acquired - convenience - intercuspal & static






43. Overlap of anterior teeth






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






45. Posterior; no horizontal overlap






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






47. Relationship of the arches bone to bone;






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






49. Contact between maxillary incisors does not line up with contact of mandibular incisors






50. 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