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. Slight buccal inclination of crown - lingual inclination of root






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






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






4. Vibrational mvmt of a tooth under occ function






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






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






7. 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






8. 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






9. Tooth positioned more facial






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






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






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






13. Posterior; no horizontal overlap






14. Growth hormone imbalance that causes the mandible to grow faster than the maxilla(all teeth are in crossbite)






15. Starts closer to premolars






16. Occlusal guard =






17. Functional occlusion






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






19. Measurement of horizontal overlap w/ probe






20. Mandible moves to the right or left






21. Teeth are misaligned when biting together






22. Retrognathic profile






23. Mesially - Labially






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






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






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






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






28. Introduced the concept of codestruction






29. Incisal 3rd






30. Patients show evidence or signs and syptoms of occ disease






31. Mandibular molars more distal than maxillary molars






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






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






34. Tongue thrust or thumb sucking can cause






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






36. Usually indicative of moderate to sever perio and secondary occ trauma






37. Later






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






39. Mandibular molars and maxillary molars are even






40. When no teeth are contacting on this side






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






42. Maxillary incisors are are lingual to mandibular incisors






43. ____ is not a sign of occl trauma






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






45. #7 - 26 - 27






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






47. Vertical overlapping






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






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






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