defect of dentition
Conditions
Interventions
Area A-B contact group:After importing oral scanning data into the design software, the minimum gap between area A and area B of the temporal jaw and the adjacent jaw is 40 µm in the design of the tem
Area B-C contact group:After importing oral scanning data into the design software, the minimum gap between area B and area C of the temporal jaw and the adjacent jaw is set at 40 µm in the design of
Area contact group A-B-C:After importing oral scanning data into the design software, the minimum gap between area A, B, and C of the temporal tooth's jaw area and the adjacent jaw area is set at 40 µ
Sponsors
The Affiliated Hospital of Xuzhou Medical University
Eligibility
Sex/Gender
All
Age
18 Years to 70 Years
Inclusion criteria
Inclusion criteria: (1) The patient's mandibular posterior teeth are missing (2) The proposed implant site has sufficient bone width and bone height to ensure the initial stability of the implant (3) The initial implantation torque of the implant can reach 35N·cm; (4) The bone type of the implant site is I-III. type bone, and there is intact bone cortex in the alveolar ridge crest. (5) Temporary restorations supported by implants can be worn within 24 hours after implant surgery, and immediate weight bearing; (6) Those who have no history of uncontrollable systemic underlying diseases and can tolerate implant surgery. (7) Patients with healthy temporomandibular joints and oral soft and hard tissues, and no advanced periodontitis; (8) Informed consent to this study and can actively cooperate with the investigator; (9) Those who have complete clinical medical records.
Exclusion criteria
Exclusion criteria: 1. Patients with serious systemic diseases; 2. Patients with serious mental diseases; 3. Patients with serious smoking or alcohol abuse habits and unable to quit; 4. Patients in pregnancy or lactation; 5. Patients with bruxism or habitual clenching of teeth; 6. Patients with bone and joint diseases who take bisphosphonates for a long time; 7. Patients with severe mouth opening restriction; 8. Patients with malignant or benign tumors in the implantation area; 9. Patients who cannot cooperate with the researcher of the project.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Bone absorption at the edges around the implant; | — |
Secondary
| Measure | Time frame |
|---|---|
| Implant probability of survivability;Soft tissue status around the implant;Rates of Complications;ISQ;Biological indicators;Patient satisfaction; | — |
Countries
China
Contacts
Public ContactYang Feng
The Affiliated Hospital of Xuzhou Medical University
Outcome results
None listed