Bridges (IPS E-MAX Press)

The maximum acceptable pontic width depends on the position, size and state of the teeth, as well as the position of the abutment within the tooth arch. The measurements to determine the bridge pontic width should be taken on the unprepared tooth.

  • In the anterior region (up to the canine), the bridge pontic width should not exceed 11mm
  • In the premolar region (from the canine up to the 2nd premolar), the bridge pontic width should not exceed 9mm

Anterior & posterior crowns

IPS e.max Press / IPSe.max CAD

Evenly reduce the anatomical shape and observe the stipulated minimum thickness. Prepare a circular shoulder with rounded inner edges of chamfer with an angle of approx 10-30°

  • The width of the circular shoulder/chamfer is approx 1mm
  • Reduction of the crown third - incisal or occlusal areas - by approx 2mm
  • For anterior crowns, the labial and palatal / lingual part of the tooth should be reduced by approx 1.5mm

IPS e.max CAD

The incisal edge of the preparation should be at least 1mm (milling too geometry) in order to permit optimum milling of the incisal edge during CAD/CAM processing.

A retentive tooth preparation design cannot be used if an adhesive luting technique is chosen.