tooth defect
Conditions
Interventions
control group:spontaneous healing
test group:alveolar ridge preservation with demineralized freeze-dried bone allograft plug and collagen protein
Sponsors
Zhejiang Provincial People's Hospital
Eligibility
Sex/Gender
All
Age
18 Years to 90 Years
Inclusion criteria
Inclusion criteria: 1: Patients were 18 years of age or older 2: Patients with grade III-IV periodontitis and stable periodontitis control 3: Implant restoration is planned for the teeth that cannot be retained due to periodontal disease. The probing depth of the affected tooth was >=5mm, and tooth movement was greater than degree II 4: At least one bone wall had a vertical alveolar bone resorption (the distance from alveolar crest to cemento-enamel junction) greater than 1/2 length of root 5: At least two residual bone walls of no less than 3mm in height were left 6: At least one adjacent tooth 7: Oral hygiene was good, with a whole mouth plaque and bleeding index of less than 25% 8: The patient had good compliance and agreed to participate in this clinical trial and signed an informed consent form
Exclusion criteria
Exclusion criteria: 1: Active periodontitis 2: Acute infection of teeth or adjacent teeth and soft tissues 3: Female patients were pregnant or lactating 4: Medications affecting platelet or bone regeneration within 3 months 5: Patients with a history of head and neck radiotherapy and uncontrolled systemic diseases 6: Heavy smokers, > 10 cigarettes/day
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Changes in buccal alveolar bone height; | — |
Secondary
| Measure | Time frame |
|---|---|
| Changes in alveolar bone width;The percentage of vital bone in the bone samples of the surgical area at 6 months after operation;Changes in mesial-buccal, distal-buccal, and palatal alveolar bone height;Thickness of the buccal and lingual alveolar ridge;buccal bone convexity; | — |
Countries
China
Contacts
Public ContactFan Yang
Zhejiang Provincial People's Hospital
Outcome results
None listed