occlusion glossary Flashcards
CLass I
ideal relationship of post teeth when mesiobuccal cusp of the maxillary first molar is centered on the buccal groove of the mandibular first molar
Class II
mandibular dental arch is posterior to the maxillary arch in one or both lateral segments mandibular first molar is distal to the maxillary first molar compared to the ideal class I relationship
Class III
mandibular dental arch is anterior to the maxillary dental arch in one or both lateral segments
mandibular first molar is mesial to the maxillary 1st molar
the relative position of teeth to form a curved or U shape configuation viewed from the occlusal surface
Arch alignment
the angle formed between the sagital plane and the average path of the non-working condyle, as viewed in the transverse plan during lateral movements
bennett angle
where is balanced articulation is gound
heavily worn teeth and complete dentures
Centric Cusps
the functional cusps
tooth to tooth occlusion
cusp-fossa occlusal scheme
tooth-to-two-teeth occlusion
cusp-marginal ridge occlusal scheme
any surface whichdiverts the mandible from its intended movement
deflective occlusal contact
movement occurring when the mandible moves away from maximal intercuspation
excursive movement
the amount by which the incisal edges of the maxillary anterior teeth are labial to the incisal edges of the mandibular teeth at maximal intercuspation. the projection of teeth beyond their antagonists in the horizontal plane
Horizontal overlap (overjet)
The position of the mandibular teeth (or tooth) relative to the maxillary teeth (or tooth) when the teeth are maximally occluded
interarch tooth alignment
The mediolateral movement of the mandible when viewed in the frontal plane
mandibular translation(sideshift, bennett movement)
what is the early part of mandibular translation
the greatest portion occurs early in the first 4 mm of forward movement of the non-working condyle as it leaves centric relation
what occures during immediate mandibular translation
the translatory portion of lateral movement in which the non-working condyle moves essentially straight and medially as it leaves the CR possition
what occures during progressive mandibular translation
the translatory portion of the mandiblar movement viewed in the transverse plane that occurs at a rate or amount that is directly proportional to the forward movement of the non-working condyle
the side of the mandible that moves towrad the median line in lateral excursion
non-working side
an occlusion which exists in the absence of signs and symptoms of occlusion related pathosis. Acceptability of occlusal variation and a sense of physchological and physical patient comfort are implied
physiological occlusion
the relation of the mandible to the maxillae at the instant of tooth contact following clsure about the transverse horizontal axis
retruded contact position
the side towards which the mandible moves or is displaced. assume movement or displacement is away from maximal intercuspation
working side
