A Clinical Investigation to Evaluate the Safety and Efficacy of Zirconia Ceramic Blocks for Use in Dental Prostheses.

Evaluation was performed by the treatment investigator based on the actual condition of the prostheses at the time of the subject's follow-up visit (in the event that multiple prostheses are present, the most unfavourable outcome is considered), and the appropriate medical images were retained. prostheses survival was calculated after completion of the D360 visit for all subjects.

In the absence of interference from external factors (e.g., severe trauma), the prostheses are considered to be survivors if they remain in situ, with or without modification, throughout the observation period.

Same as the Primary Outcome Measure

Evaluation was performed by the treatment investigator based on the actual condition of the prostheses at the time of the subject's follow-up visit (in the event that multiple prostheses are present, the most unfavourable outcome is considered.), and the corresponding medical images were retained. The relevant prostheses success rate was calculated after completion of the corresponding visits for all subjects.

In the absence of interference from external factors (e.g., severe trauma), the prosthesis is considered a success if it is free of any complications over the entire observation period.

The quality of the prostheses was evaluated by the treatment investigator based on the actual condition of the prostheses at the time of the subject's follow-up visit and according to United States Public Health Services (USPHS) criteria.Each USPHS criterion was ranked on a scale of A to C, where A = excellent, B = good, C = unacceptable.

The appearance and comfort of the prostheses were evaluated by the subjects according to their own subjective feelings. Visual Analogue Scales (VAS) was used to complete the satisfaction rating by themselves. That is, on a 10cm long scale, "0" represents the most satisfactory and "10" represents the most unbearable.