Preoperative assessment begins by determining whether there is an adequate indication for the procedure and whether the expected benefits justify its risks. The specific characteristics of the procedure and the patient are then studied.
The evaluation may include medical history, current medication, allergies, prior surgical history, physical examination, imaging tests and preoperative studies. Depending on the procedure and the patient's condition, additional assessments may be necessary.
Risks are not the same for all surgeries. Aspects that may be assessed include bleeding, infection, sensory disturbances, healing, bone stability, occlusal problems and anesthetic risks, in addition to complications specific to each procedure.
Adequate informed consent does not consist merely of signing a document: it requires understanding the indication, the reasonable alternatives, the limitations and the relevant risks of the proposed treatment.