Ivoclar Vivadent SR Phonares II - Manual (Page 20)

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• The palatal working cusp of the maxillary premolars
engages the marginal ridges of the mandibular
premolars.
• The alignment of the 1 st premolar establishes the
buccal corridor.
• The mesio-palatal working cusp engages the central
fossa of the mandibular 2 nd molar .
Intercuspation
The maxillary teeth can now be aligned with the
mandibular teeth in a one-tooth-to-two-tooth relation-
ship to achieve optimum intercuspation.
Maxillary 1 st molar:
Maxillary 2 nd premolar:
Maxillary 2 nd molar:
Maxillary 1 st premolar:
• The mesio-palatal working cusp engages the central
fossa of the mandibular 1 st molar.
• The distal-palatal working cusp engages the marginal
ridge of its antagonist.
• Viewed from the buccal, the mesio-buccal cusp of the
maxillary 1 st molar points towards the mesio-buccal
fissure of its antagonist. This is a typical characteristic
of a classic bite with normal intercuspation.
Typ
Posterior tooth setuP
• The palatal working cusp of the maxillary premolars
engages the marginal ridges of the antagonists.