[Use of the scanner and Scanlam models in preimplant evaluation].

The experience with dental implants has been so satisfactory so as to suggest their usage beyond the limits of their normal indications. Preoperative examinations have been improved by the use of the scanner. The employment of "Scanlam" models simplifies and enhances the interpretation of scanner negatives. By repositioning the surgical guide on the "Scanlam" model, both surgical and prosthetic teams are aided. It should be noted, however, that "Scanlam" models have limitations and are simply volumetric expressions of the scanner. The use of the drilling guide should be used to assist the surgeon, but not to replace his clinical judgement.