Lack of teeth
Conditions
Interventions
Tooth extraction site preservation group:Minimally invasive extraction of single anterior or posterior teeth without preservation value under local anesthesia, removal of granulation tissue in the ext
Maxillary sinus elevation group:The elevated sinus floor mucosa is implanted with FFA bone graft material, and the implant is also implanted simultaneously. The surgical area is routinely sutured
Maxillary sinus external elevation group:Implantation of FFA bone graft material in the raised posterior sinus floor area
Large area horizontal bone augmentation group:After preparing a nourishing hole in the jawbone defect area, deep-frozen allogeneic bone fragments or blocks are placed, fixed with titanium screws, and
Vertical bone augmentation group:Placement of customized bone rings and simultaneous implantation of implants to fix the bone rings
Sponsors
Zhejiang Provincial People's Hospital
Eligibility
Sex/Gender
All
Inclusion criteria
Inclusion criteria: (1) The patient has teeth that cannot be preserved and needs to be extracted for delayed implant restoration. The extraction site should be preserved by site preservation surgery; (2) For patients with missing posterior teeth and insufficient sinus crest distance who require maxillary sinus augmentation or external augmentation surgery for implant repair, the sinus floor augmentation surgery area needs to be filled with bone filling materials; (3) Single anterior tooth missing, with vertical bone defects at the missing site requiring bone augmentation surgery; (4) Patients with multiple consecutive missing teeth and large horizontal and/or vertical bone defects that require bone augmentation surgery. (5) Age = 18 years old, regardless of gender; (6) Good oral hygiene conditions; (7) Do not smoke or consume less than 10 cigarettes per day, and do not drink excessively; (8) Good overall condition, assessed to be able to tolerate surgery; (9) Signed the Informed Consent Form.
Exclusion criteria
Exclusion criteria: (1) Any systemic disease that may have surgical contraindication, such as uncontrolled diabetes, hypertension, immunosuppression, coagulation dysfunction, radiotherapy, chemotherapy, alcohol or drug abuse, oral and/or intravenous bisphosphonates (2) Poor oral hygiene or inability to maintain oral hygiene according to medical advice (3) Smokers>10 cigarettes per day or alcoholics (4) Patients with active periodontitis who do not receive basic periodontal treatment (5) pregnant or lactating women (6) Patients who cannot tolerate implant surgery
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Postoperative bone augmentation level ; | — |
Secondary
| Measure | Time frame |
|---|---|
| The situation of routine postoperative complications; | — |
Countries
China
Contacts
Public ContactLinhong Wang
Zhejiang Provincial People’s Hospital
Outcome results
None listed