periodontal disease
Conditions
Interventions
control group:heal spontaneously
Test 1:flap procedure for ridge preservation
Test2:Flapless precedure for ridge preservation
Sponsors
Peking University School and Hospital of Stomatology
Eligibility
Sex/Gender
All
Age
18 Years to 70 Years
Inclusion criteria
Inclusion criteria: Patients aged at least 18 years, of ASA I or II classification, required extraction of a molar because of periodontitis and able to comply with the study procedures.
Exclusion criteria
Exclusion criteria: Pregnant and lactating women; medication or systemic diseases that would interfere with osseous turnover, long-term exposure to non-steroidal anti-inflammatory drugs, chemotherapeutic drugs, taking bisphosphonates for osteoporosis, and immunosuppressive agents; radiotherapy in the head and neck area; absence of adjacent teeth; uncontrolled diabetics(HbAlc>7%); unwillingness to return for the follow-up examination; Teeth with ongoing acute pathology; smoking more than 10 cigarettes per day.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| vertical bone changes;horizontal bone changes;width of keratinized gingiva; | — |
Secondary
| Measure | Time frame |
|---|---|
| length,diameter of implant; | — |
Countries
China
Contacts
Public ContactHu Wenjie
Peking University School and Hospital of Stomatology
Outcome results
None listed