2.5- DATA REGISTRY/PROTECTION AND RESTORATIONS PROCEDURES Photographs (digital data registration) will be carried out by the operator/responsible for research, strictly made to NCCL cavities and restorations as part of this trial. No photographs will be made to identify the patient, including photographs of the patient face or profile. All photographs taken in the context of this study will be "identified" (file name) with a single key (alphanumeric key without any kind of relationship with file number, name, date of birth or other information associated with the participant patient). Only in the registration database (with access to the principal investigator and other team members, with the exception of the statistical investigator for the purposes of observational clinical records) there should be registration/membership of this key with the code-process of patients. The database in question will be lodged in own servers with restricted access levels and well identified. The servers that lodge the photos/ records and the database belong to Dental School Clinic of Faculty of Health Sciences - UFP and are located in data centre with fully controlled access. This mechanism ensures the concealment of identity of the user (as name and other information identifying the participant) in the photographs and other records file, having access to them only the investigator and research team (except investigator of statistics). This mechanism fulfilled the recommendation and Authorisation of CNPD, Portuguese Data Protection Authority (Authorization and registry 6430/2015 at 7 July 2015; Case 2536/2015).