Single Tooth Implant-supported Fixed Prosthetic Rehabilitation Using PEEK.

Inclusion Criteria: * Patients rehabilitated with a single crown supported by and implant in immediate function; * Subjects who, in the opinion of the Investigator, are able to understand this clinical study, co-operate with the procedures and are willing to return to the clinic for all the required post-operative follow-ups; * Subjects who are able to give voluntary, written informed consent to participate in this clinical study and from whom consent has been obtained. Exclusion Criteria: * Female Subjects who are pregnant; * Subjects who are known drug or alcohol abusers or with psychological disorders that could affect follow-ups or treatment outcomes; * Subjects who are currently enrolled in a clinical study; * Subjects requiring or currently having ongoing orthodontic treatment;