Ivoclar Vivadent Vectris - Manual (Page 18)

18
P R E PA R AT I O N G U I D E L I N E S A N D M I N I M U M
R E Q U I R E M E N T S F O R V E C T R I S F R A M E W O R K S
As Vectris restorations are luted in place using an adhesive cementation method, a tooth-conserving
preparation technique can be used.
Anterior crowns and bridge abutments
Evenly reduce the anatomical shape and observe the stipulated minimum thickness. Prepare a 360°
shoulder with rounded inner edges or a deep chamfer of at least 0.8 mm. For anterior crowns, the labial
and/or palatal/lingual surfaces should be reduced by at least 1.0 mm. Reduce the incisal crown third by at
least 1.5 mm. Prepare smooth, rounded transitions so that no internal line angles or edges are present.
0.8
0.8
≥
1
≥ 1
1.5
Posterior crowns and bridge abutments
Evenly reduce the anatomical shape and observe the stipulated minimum thickness. Prepare a 360° shoulder
with rounded inner edges or a deep chamfer. For posterior crowns, reduce the labial and/or palatal/lingual
surfaces by at least 1.0 mm. Reduce the occlusal crown third of posterior teeth by at least 1.5 mm. Prepare
smooth, rounded transitions so that no internal line angles or edges are present.
1.5
1.5
1.5
≥ 1 ≥ 1
0.8 0.8