Patients with missing teeth in the maxillary posterior region need to undergo maxillary sinus external elevation surgery due to insufficient bone mass Maxillary sinus external elevation Dental implant
Conditions
Interventions
When the patient undergoes maxillary sinus floor elevation surgery, THE Graft powder is used for space filling.,When the patient undergoes maxillary sinus floor elevation surgery, Bio-Oss powder is u
Experimental Procedure/Surgery,Active Comparator Procedure/Surgery
External elevation of maxillary sinus floor with THE Graft group,External elevation of maxillary sinus floor with Bio-Oss group
Sponsors
National Natural Science Foundation of China
Eligibility
Sex/Gender
All
Age
18 Years to No maximum
Inclusion criteria
Inclusion criteria: 1. No major systemic diseases 2. Missing teeth in the maxillary posterior region for more than 3 months, with a bone height of less than 5mm from the top of the alveolar ridge to the bottom of the maxillary sinus in the missing tooth area. Maxillary sinus floor external elevation surgery is required to increase the height of the alveolar ridge bone and implant an implant at the same time 3:.Previously in good physical condition, able to undergo local anesthesia surgery in the oral cavity 4. Patients with chronic periodontitis should be treated first and recruited after their periodontal health stabilizes
Exclusion criteria
Exclusion criteria: 1: Contraindications to implant surgery, such as uncontrolled diabetes or other systemic diseases 2: Heavy smoking>20 cigarettes/day 3: Untreated periodontal disease, pulp disease, or other oral diseases 4: History of radiation therapy for head, neck, and maxillofacial region 5: Pregnant and lactating women during recruitment period 6: Previously performed implant implantation or bone augmentation surgery at the current surgical site 7: The habit of clenching teeth or severe wear and tear 8: The patient does not have good compliance 9: Acute maxillary sinusitis, presence of gas-liquid plane in the maxillary sinus, polyps in the posterior nasal cavity of the maxillary sinus, maxillary sinus mucinous cysts, large maxillary sinus cysts with unknown diagnosis, benign or malignant tumors in the maxillary sinus area 10: Disabled individuals who are unable to clean their oral hygiene on their own 11: Patients with psychological and mental disorders
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Elevation height of maxillary sinus floor Before surgery, immediately after surgery, 6 months after surgery, 1 year after surgery, 3 years after surgery Evaluation of maxillary sinus floor elevation height using oral panoramic film and cone beam computed tomography | — |
Secondary
| Measure | Time frame |
|---|---|
| Changes in bone resorption, bone powder volume, and height at the edge of implants Before surgery, immediately after surgery, 6 months after surgery, 1 year after surgery, 3 years after surgery Assessment of changes in bone resorption, bone powder volume, and height at the edge of implants using panoramic dental images and cone beam computed tomography,Implant survival rate 6 months after surgery, 1 year after surgery, 3 years after surgery Calculate whether the implant remains and calculate the implant survival rate | — |
Countries
China
Contacts
Public ContactHui Wang
Zhejiang University
Outcome results
None listed