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Few space

More space

More space

External connection

Internal connection

Platform switching

The shape of healing abutments The subgingival shape of impression copings The morphology of standard abutments The technical limits of individualized abutments The right position of screwed components

The technical limits of divergent angulations

Each crown has its own emergence profile but most off healing abutments are circular and many of them are simply cylindrical Normally they should prepare the gingiva to receive the crown without too much compression

2 mm

4 mm

6 mm

Homothetic reduction of an anterior tooth produces usually a poor retentive abutment

Stability of anterior abutment may be enhanced by increasing the height of the palatal axial wall


Circular shape in cervical area

Flat shape in incisal area

Orthodontic treatment





Bad situation

Good situation

Lack of predictibility with prosthetic components Alain Brabant