Occlusion Flashcards
What is malocclusion
Any deviation from the physiologically acceptable relationship of the maxillary arch and/or teeth to the mandibular arch and/or teeth
Problems from malocclusion
Ability to maintain adequate plaque control
Speech development
Appearance
What is crossbite
Maxillary or mandibular posterior teeth are either facial or lingual to their normal position.
This condition may occur bilaterally or unilaterally
What is edge to edge bite?
Incisal surfaces of maxillary anterior teeth include with incisal surfaces of mandibular teeth instead of overlapping as in normal occlusion
End to end bite
Molars in pre-molars occlude cusp to cusp as viewed mesiodistally
What is open bite
Lack of occlusal or incisal contact between certain Maxillary and mandibular Teeth because either or both have failed to reach the line of occlusion
What is over jet
The horizontal distance between the labioincisal surfaces of the mandibular incisors and the linguoincisal surfaces of the maxillary incisors
What is under jet
Maxillary and Teeth are lingual to mandibular The Teeth
What is Buccoversion
Teeth positioned buccal to normal
What is Labioversion
Tooth that has assumed a position labial to normal
What is linguoversion
Teeth positioned lingual to normal
What is supraversion
Elongated above the line of occlusion
What is infraversion
Depressed below the line of occlusion.
What is torsiversion
Teeth are turned or rotated
Who came up with the occlusion classifications
Edward H angle
What are the three general classes of malocclusion
Class I, class II: distoclusion, class III: Mesioclusion
What is the canine relation in class I neutroclusion
Maxillary permanent canine occludes with the distal half of the mandibular canine and the mesial half of the mandibular first pre-Molar
What is the molar relation in class I neutroclusion
Mesiobuccal cusp of the maxillary first permanent molar occludes with a buccal groove of the mandibular first permanent molar
What is the facial profile for class I neutroclusion
Mesognathic
What is the facial profile for class II distoclusion
Retrognathic
What is the molar and canine relation in class II distocolusion
Mandibular Teeth are posterior to normal position in the relation to the maxillary teeth
What are the two divisions in class II distocolusion
Division one: maxillary incisors are protruded
Division two: maxillary incisors are retruded
What is the facial profile for class III Mesioclusion
Prognathic
What is the molar and canine relation in class III mesioclusion 
Mandibular Teeth are anterior to normal position in the relation to the maxillary teeth
