Status:
UNKNOWN
Tenting Screws in Combination With Platelet Concentrate for Vertical Alveolar Ridge Augmentation
Lead Sponsor:
Second Affiliated Hospital, School of Medicine, Zhejiang University
Conditions:
Bone Loss, Alveolar
Eligibility:
All Genders
18-80 years
Phase:
NA
Brief Summary
Alveolar bone resorption often occurs after tooth extraction. At present, guided bone regeneration technique is widely used in clinic since it leads to less trauma and less complications. Tenting scre...
Detailed Description
Alveolar bone resorption often occurs after tooth extraction. At present, guided bone regeneration technique is widely used in clinic since it leads to less trauma and less complications. Tenting scre...
Eligibility Criteria
Inclusion
- 18-80 years old;
- single tooth in the maxillary posterior area cannot be retained (third degree loosening / alveolar bone resorption to the periapical area), implantation is needed after extraction, and CBCT shows vertical bone defect ≥ 3mm;
- 4 weeks after extraction or missing teeth within 3-5 weeks;
- adjacent teeth exist and loosening is less than Ⅰ degree;
- periodontal disease in inactive stage, whole mouth bleeding index (FMBS) is less than 20%;
- thick gingival biological type.
- CBCT shows that the bone of the edentulous site meets the requirements of tent screw implantation (bone height ≥ 3mm and bone mineral density is sufficient);
- the patients and their families have informed consent and signed the informed consent form.
Exclusion
- pregnant and lactating women;
- smoking (\> 10 cigarettes per day) and alcoholism;
- taking anticoagulants within 3 months before operation;
- suffering from autoimmune diseases, diabetes, liver disease, blood system diseases and infectious diseases;
- patients taking any drugs that affect platelet function or whose platelet count is less than 200000/mm3 3 months before blood collection;
- patients who have been treated with bisphosphate / steroids for a long time;
- have received alveolar ridge bone augmentation surgery;
- previous history of radiotherapy in the head and neck;
- acute inflammation in edentulous sites;
- inability to maintain good oral hygiene or follow-up visits as required.
Key Trial Info
Start Date :
August 10 2021
Trial Type :
INTERVENTIONAL
Allocation :
ESTIMATED
End Date :
March 1 2024
Estimated Enrollment :
69 Patients enrolled
Trial Details
Trial ID
NCT04835532
Start Date
August 10 2021
End Date
March 1 2024
Last Update
September 29 2021
Active Locations (1)
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1
2nd Affiliated Hospital, School of Medicine, Zhejiang University, China
Hangzhou, Zhejiang, China, 310000