To assess the influence that the complications of implant treatment have on the patient's perception and satisfaction on treatment.

The study is carried out in 5 dental centers with similar socio-professional characteristics.

The perception of patients with complications in implantology will be evaluated using a questionnaire.

All patients who present some type of complication in a dental treatment with implants will be included. Patients will be included both if they are aware of the complication, that is, they come to the consultation for it, and patients who are diagnosed with a complication in a routine check-up.

Patients will be informed of the complication and before explaining the treatment possibilities, their inclusion in the study will be formalized by signing the Informed Consent document.

Subsequently, they must fill out a questionnaire consisting of 5 questions about their perception of the complication and its influence on their quality of life.

The researcher will record the technical data of the implant treatment as well as the patient's responses in the Data Table.

After collecting a sufficient number of data, around 400 patients, the collaborating researchers will send their corresponding data tables to the main researcher who will be in charge of the statistical analysis together with obtaining the results.

Inclusion Criteria:

Patients form 18 to 95 years old. Patients with dental implants supporting one o more implant prosthesis. Patients presenting one treatment complication affecting either dental implant or implant prothesis.

Exclusion Criteria:

Patients who does not accept informed consent and do not want to fill the questionnaire.

Patients with cognitive impairment. Patients under psychiatric treatment.

Male or female.

All the patients who present dental implant complication in any of the center in the study.