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

A Prospective, Multicentre, Single-group, Target-value Clinical Investigation Evaluating the Safety and Efficacy of Zirconia Ceramic Blocks for All-ceramic Dentures for Use in Dental Prostheses.

The goal of this clinical trial is to use the investigational device (Zirconia Dental Ceramics) to perform dental prosthesis in Patients with permanent teeth. The main question it aims to answer is:

Is the safety and efficacy of the investigational device (Zirconia Dental Ceramics) adequate to meet the requirements for clinical use?

Participants will use the investigational device (Zirconia Dental Ceramics) to perform dental prosthesis and then complete a 12-month follow-up after prostheses. During the follow-up period，participants will assess their satisfaction，while the investigator will assess the efficacy indices of prosthesis survival rate, prosthesis success rate and prosthesis quality.

The study aims to provide clinical evidence for the use of the investigational product (zirconia dental ceramic) in dental restorations.

Inclusion Criteria:

1. Age ≥ 18 years old, gender is not limited;
2. Patients with permanent teeth who were judged by the investigator to be expected to have dental prostheses using zirconia materials;
3. Subjects volunteered and signed an informed consent form.

Exclusion Criteria:

1. Allergy to zirconia ceramic materials or a history of extensive allergies;
2. Patients with oral mucosal ulcers;
3. Patients presents with a significant, uncontrolled, systemic disease, encompassing, but not limited to, cardiovascular disease, endocrine or metabolic disease, and immune system disease, among others;
4. Pregnant or breastfeeding, or those planning to become pregnant during the investigation period;
5. Participation in another clinical investigation within 3 months;
6. Patients with mental disorders and a lack of autonomy;
7. Meets other conditions that, in the opinion of the investigator, make participation in this clinical investigation inappropriate.