Ivoclar Vivadent SR Phonares II - Manual (Page 8)

8
Complete dentures Partial dentures
IndIcatIons
Given their properties the SR Phonares II teeth are suitable for esthetically and functionally
demanding restorations. The range of indications includes partial dentures, combination dentures,
complete dentures, hybrid overdentures and implant-supported overdentures.
Important notes
The following requirements should be met to ensure that the dentures function appropriately in
the oral cavity in the long term:
– Fabrication in the dental laboratory according to the principles of best practice
– Application of dental materials according to the manufacturer's instructions. In particular,
denture teeth should not be excessively weakened as a result of adjustments by grinding.
– Planning and fabrication of the dentures should be performed in close collaboration with the
dentist.
– Dental technician and dentist should ensure a balanced occlusion and articulation.
The dentist should check the following points before beginning the treatment:
1. Does the patient belong to a risk group that generally may jeopardize the success of the treatment?
a. Are there signs of bruxism (patient's statements, tooth wear, masseter hypertrophy)?
b. Are there signs of significantly increased masticatory forces?
2. What type of removable or partially removable restoration should be implemented?
All PMMA/composite-based denture teeth are suitable for tissue-supported and partial dentures
in patients that do not belong to any of the above risk groups.
Patients restored with implant-supported restorations have been shown to exert higher mastica-
tory forces than patients with tissue-supported dentures. The increase in these forces is related to
the fact that implant-supported restorations are anchored in the bone and therefore lack the
sensory receptive feedback necessary to control these forces. The heightened forces may lead to
an increase in chipping in composite teeth.
It may therefore be indicated to use PMMA-based denture teeth for these patients. PMMA teeth
are less prone to chipping but show a significantly higher wear than composite teeth.