Patients that have a full-mouth (maxilla and/or mandible) dental implant supported rehabilitation restored with monolithic zirconia biomaterial with buccal veneers

Patients that have a full-mouth (maxilla and/or mandible) dental implant supported rehabilitation restored with monolithic zirconia biomaterial full contour (without veneer)

Patients that have a full-mouth (maxilla and/or mandible) implant supported rehabilitation restored with zirconia substructure and feldspathic veneered biomaterial

Place dental implants in both jaws (maxilla and mandible) according to manufacturer specifications

measure the total number of ceramic fractures (chipping) visible at naked eye in both groups (monolithic and feldspathic) that happen from insertion (baseline) to last follow-up visit

Primary outcomes are defined as survival and success rates of the final prosthesis.

For evaluation of these outcomes, an analysis variable will be used (Mendez Caramês et al., 2016): if no alterations are present, the prosthesis will be recorded as "Alpha"

Measure the total amount of adverse events other than chipping, that made the patient come to the dental office, that happen from insertion (baseline) to last follow up visit

It is determined that if the complication was solved in the dental chair is considered a Small complication/minor chipping - not requiring any intervention besides polishing or recontouring without the need for prosthesis retrieval-"Bravo" classification will be attributed

Measure the total amount of adverse events other than chipping, that made the patient come to the dental office, that happen from insertion (baseline) to last follow up.

It is determined that if the complication was solved in the dental laboratory is considered a big complication/major chipping - a "Charlie" classification will indicate the occurrence of major chipping, need for prosthesis retrieval and laboratory intervention;

a "Delta" classification will be attributed when fracture of the framework is present, defining a non-surviving prosthesis

implant success rates will be evaluated; absence of persistent subjective complaints (pain, foreign body sensation, and/ or dysesthesia); absence of peri-implant infection with suppuration; absence of implant mobility; and absence of continuous radiolucency around the implant by previously established methods based on the clinical and radiographic examinations at the yearly visits