Treatment planning in implantology , Apico – coronal evaluation

The implant platform must be positioned 2 to 3 mm above the line of the cement-enamel junction of the adjacent tooth if present. In cases without a dental reference, the implant must be 1.0 – 1.5 mm from the bone crest.

When there is a thin keratinized mucosa, additional length (1.0 mm) to the surgical bone level is recommended. Variations on these schemes generate shallower and deeper priimplant sulcus, with adjoining long or short teeth.

When the implants are positioned too coronal, the crown contours can be flatter, and a grey hue is visible at the gingival margins.

On the other hand, implants too apical will generate false periodontal pockets, susceptible to mucositis and periimplantitis.