periodontitis
Conditions
Interventions
Experimental group:collagen sponge + collagenated bovine bone mineral
control group:collagen membrane + collagenated bovine bone mineral
Sponsors
Affiliated Stomatological Hospital of Zhejiang University School of Medicine
Eligibility
Sex/Gender
All
Age
18 Years to No maximum
Inclusion criteria
Inclusion criteria: 1. Aged >= 18 years; 2. For molars that cannot be preserved due to periodontitis, late implantation is planned in the later stage; 3. There is no acute infection at the surgical site, such as abscess or periodontal discharge; 4. There are bone defects in 1 to 2 bone walls of the extraction socket, the alveolar bone of the defect bone wall is absorbed to 1/2 or less of the middle root, and the remaining height is >=3mm; 5. At least one adjacent tooth is present.
Exclusion criteria
Exclusion criteria: 1. Smoking; 2. During pregnancy or lactation; 3. Untreated periodontal disease; 4. Poor general health and unable to tolerate surgery (such as diabetes, heart disease, malignant tumor, etc.); 5. Past history of radiotherapy or radiotherapy; 6. Systemic diseases or drug use that affect bone metabolism or bone healing and mucosal healing (such as immunosuppressants, phenytoin, bisphosphonates, etc.); 7. Continuous extraction of multiple teeth; 8. Hypersensitivity to the materials used in the study.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| horizontal width of ridge;vertical height of ridge; | — |
Secondary
| Measure | Time frame |
|---|---|
| width of keratinized tissue;thickness of mucosa;postoperative pain; | — |
Countries
China
Contacts
Public ContactDing Peihui
Affiliated Stomatological Hospital of Zhejiang University School of Medicine
Outcome results
None listed