Decayed tooth
Conditions
Interventions
Sponsors
Eligibility
Inclusion criteria
Inclusion criteria: 1. Aged 18 to 70 years, no gender restriction, normal mouth opening; 2. Healthy, without malignant tumors, cardiovascular and cerebrovascular diseases and other major systemic diseases; 3. If the degree of lesion reaches the defect of hard tissue in the middle layer of dentin, the pulp activity is normal and the following conditions should be met: (1) Tooth position: all teeth (2) Hole type: v-type hole; (3) Teeth without special stains, such as tetracycline teeth; (4) The tooth color is similar to that of the A2/A3 flow resin. 4. The occlusion is natural, and the occlusion relationship is normal; 5. If the subject is a woman of childbearing age, pregnancy test should be conducted and the result is negative; 6. Patients who agree to use experimental instruments for treatment and sign a written informed consent; 7. Patients who are willing and able to follow up timely as required by the plan.
Exclusion criteria
Exclusion criteria: 1. Allergy or multi-drug allergy;A history of allergy to polymer-based materials such as dental resin; 2. Patients with severe periodontitis;Patients with poor oral health;Abnormal salivary gland function; Temporomandibular joint disorder; 3. Patients with abnormal tooth wear (night molars, clenching habits), acid decay or cleft teeth, etc.; 4. DMFT=3; 5. Abnormal occlusion, such as deep cladding; 6. Patients with malignant tumors, cardiovascular and cerebrovascular diseases and other major systemic diseases; Women of child-bearing age and lactating women who are pregnant or intend to have a pregnancy within one year; Mentally ill; 7. Subjects deemed unsuitable for inclusion by the researcher, such as poor compliance, etc.; 8. Plan to go abroad within 1 year, or fail to complete 1-year postoperative follow-up due to other reasons; 9. The subjects participated in the clinical trials of other drugs or devices at the same time and did not reach the clinical end point;The subjects have participated in other clinical trials in the past 3 months. 10. Cannot tolerate or use the rubber barrier; 11. Patients undergoing orthodontic treatment.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Retention and fracture of backfill;Backfill body edge fracture;Shape and edge compatibility of backfill; | — |
Secondary
| Measure | Time frame |
|---|---|
| Adjacent surface contact of backfil;colour match;surfaceness;Surface coloring; | — |
Countries
China