Dentition defect
Conditions
Interventions
Sponsors
Eligibility
Inclusion criteria
Inclusion criteria: 1. Good general health; 2. Good oral hygiene; 3. Hopeless posterior teeth, residual root crown, split teeth, cracked teeth, chronic periapical periodontitis, etc.; 4. Implant prosthesis after tooth extraction; 5. Finished basic periodontal treatment; 6.Voluntary participation and signing of informed consent.
Exclusion criteria
Exclusion criteria: 1. Minors or cognitive impairment, unable to understand the content of the experiment; 2. Severe systemic diseases, unable to tolerate routine outpatient extraction and implantation; 3. History of radiotherapy for head and neck tumors; 4. Long-term administration of corticosteroids, bisphosphate and other drugs affecting bone regeneration; 5. Severe periodontitis; 6. Teeth with acute infection.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| bone weight and height;bone density; | — |
Countries
China
Contacts
Peking University School and Hospital of Stomatology