periodontitis
Conditions
Interventions
natural healing group:NA
Micro crestal flap-alveolar ridge preservation group:NA
Sponsors
Peking University Hospital of Stomatology
Eligibility
Sex/Gender
All
Age
18 Years to 70 Years
Inclusion criteria
Inclusion criteria: 1. molars extracted due to severe periodontitis or combined periodontal-endodontic lesions; 2. Having a complete medical history, including records of the full mouth periodontal condition at initial consultation; 3. Patients meet the diagnostic criteria for stage III/IV periodontitis; 4. Signed written informed consent prior to treatment for the use of radiographic and clinical data for clinical research; 5. The affected tooth should receive either alveolar ridge preservation or natural healing. In cases of alveolar ridge preservation, the biomaterials used should be deproteinized bovine bone mineral particles, resorbable collagen membranes, and collagen sponge dressings, with flaps confined to the apex of the alveolar ridge without wound closure (micro crestal flap - alveolar ridge preservaiton). 6. CBCT was taken by NewTom VG (Aperio Services, Italy) at 110 kV, 12-17 mA, with an imaging thickness of 0.125 -0.300 mm.
Exclusion criteria
Exclusion criteria: 1. Patients are <18 years of age; 2. Patients were pregnant or breastfeeding at the time of surgery; 3. Patients suffering from systemic diseases or using drugs affecting bone metabolism (bisphosphonates, glucocorticoids, etc.) in the perioperative period; 4. A history of head and neck radiotherapy; 5. Smoking more than 10 cigarettes per day; 6. The affected tooth was extracted due to untreatable endodontic disease or tooth fracture;
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Central bone height;Ridge width at 1 mm apically from higher alveolar ridge; | — |
Secondary
| Measure | Time frame |
|---|---|
| General information of affected teeth;General information of patients;Bone augmentation procedures during implant therapy;Lingual bone height;Buccal bone height;Ridge width at 3 mm apically from higher alveolar ridge;Ridge width at 1 mm apically from lower alveolar ridge;Ridge width at 3 mm apically from lower alveolar ridge;modified implant plaque index;Peri-implant probing depth;Modified bleeding index;Keratinized tissue width;Radiographic Bone Loss; | — |
Countries
China
Contacts
Public ContactHaoyun Zhang
Peking University Hospital of Stomatology
Outcome results
None listed