Clinical Investigation of the F-Composite 2 System in Direct Filling Therapy

Inclusion Criteria: * Indication for direct filling of Class I or II with permanent premolars or permanent molars * replacement of insufficient fillings (e.g., due to edge caries, filling fracture, Lack of quality of the surface, lack of aesthetics, undesirable filling material, leaky edge, edge gap, etc.) * extensive primary caries * Vital tooth (cold test) * One-, two- or three-surface fillings in the lateral tooth area, with a maximum of 25% single-faced (Class I) with antagonists. * The occlusal area of the filling must be at least 1/3 of the total area of the filling tooth. This criterion is estimated. * Patient wishes to receive care within the framework of the study (written consent after detailed elucidation and study of patient information). * Maximum of 2 restorations per patient. * Preoperative complaints on the tooth to be restored (maximum 3 on visual Analog scale (0 = complaint-free, 10 = maximum possible pain) to temperature or bite sensitivity * Sufficient language skills Exclusion Criteria: * Unfinished hygiene phase or poor oral hygiene * Sufficient draining of the operating field is not possible * Patients with proven allergy to one of the ingredients of the materials used * Patient has allergies to local anesthetic agents Ultracain DS (active substance: articaine; Vasoconstrictor), if anesthesia is desired * Patients with severe systemic diseases * Devital or pulpitic teeth * Periodontal insufficiency * Supplements with cusp attachments * open side bite * missing antagonist * Indication for direct capping * Pregnancy (women of childbearing age receive a free pregnancy test for self application, the negative result of which is shown with her confirmed consent).