Occlusion Flashcards
definitions
mandibular movement and the resulting contacts of maxillary and mandibular teeth from these movements
intra-arch alignment
with in the same arch
interarch alignment
with opposing arch
Intra-arch alignment characteristics
- contact areas and tooth form
2. embrasures
axial positioning of intra-arch alignment
relationships created parallel to and with the long axis of the teeth
Curve of spee description and function
Anterior-posterior
description-canine tip to DB cusp of maxillary second molar
function-distribute occlusal forces
curve of wilson descript. and function
medial to lateral (lingual inclination)
descript.-inclination of teeth
function-distribute occlusal forces
intra-arch alignment variations
buccoversion-buccal to normal arch form
linguoversion-lingual to normal arch form
tosoversion-tooth rotate/turns in an otherwise normal position
Supraversion
supereruption due to lack of opposing tooth
infraversion
ankylosed-tooth does not reach occlusal plane. Generally primary teeth that are retained
mesioconversion
loss of one tooth causing posterior tooth to drift to midline
distoversion
tooth moves away from midline, usually pre-molars
Centric relation
bone dictated position, condyle and temporal bone (interarch)
Centric Occlusion
tooth dictated, position where teeth fit together best (interarch)
Elevation 2 movements
- CR
2. CO