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Basal rest mould on the gums We recommend not veneering the basal application of the bridge pontics on the gingiva of the alveolar ridge with composite veneers. This area must be designed from BioHPP in order to ensure the greatest possible strength in the vertical extension. In the transitions from the composite veneer to the BioHPP framework material, an undercutting retentive end strip must be modelled using a wraparound technique (Fig. 3). The BioHPP has extremely good polishing properties, making direct contact to the gingiva possible. 3 Connector design* Oral view • Veneering resin in the buccal basal area should not project beyond the basal BioHPP layer • Even veneering thickness, supported everywhere by framework • Veneering should not taper off sharply • Veneering in the connector area should not have wide or sharp separations • The basal pontic area should not be veneered • Height: > 3.7 mm • Width: > 3.5 mm Veneering (composite): • Even layer thickness • 1–2 mm • Round cusp formation (anatomically shaped, but not too angled) 4 Palatinal view 5 Framework (BioHPP): • Anatomically shaped • Supports the veneering • Round design Section Tooth stump preparation options: • Wedge with rounded interior edge • Accentuated chamfer Not veneered 5 * University of Regensburg UKR, Dr. Rosentritt (DE) Image: Schwindt Dentallabor, Landau/Pfalz (DE) 7/28