Ivoclar Vivadent SR Phonares II - Manual (Page 17)

17
Anterior tooth setup in function
Most conventional denture occlusal schemes suggest a bilateral balanced occlusion in the posterior
region on the working and non-working side and in protrusion.
Guiding contacts during laterotrusion and protrusion are not desirable in the anterior region.
– In general, it is suggested that anterior teeth have approx. 1.5 mm of vertical overlap and
approx. 1.5 mm of horizontal overlap.
– The overlap should be designed in such a way that the anterior teeth are prevented from
contacting in functioning.
– Anterior guidance – as sometimes practised in crown and bridge techniques – is not
recommended for conventional denture prosthetics.
– Anterior contacts during functioning may lead to parafunctions.
Anterior setup in implant-supported dentures
Premature contacts can destabilize the dentures during functioning. Even if retention elements, or
implants, ensure increased denture stability, it is advisable to avoid anterior contacts. Patients with
implant-supported restorations are generally capable of exerting higher chewing forces and lack the
necessary proprioceptive feedback to correctly monitor these forces. Therefore, anterior contacts
may have the potential for excessive wear or chipping.
verTICAl overBITe sAgITTAl overBITe
CeNTrIC ProTrUsIoN
No contact shear contact
in bilateral balanced occlusion
anterIor tooth setuP