Dentition defect
Conditions
Interventions
A group(modified bone window repositioning technique):None
B group(traditional bone window repositioning technique):None
Sponsors
Stomatology Hospital,Zhejiang University School Medicine
Eligibility
Sex/Gender
All
Age
18 Years to No maximum
Inclusion criteria
Inclusion criteria: 1. All patients who underwent 27 implants of concurrent maxillary sinus lift with the Affiliated Stomatological Hospital of Zhejiang University School of Medicine from September 2024 to September 2025; 2. Age>=18 years old; 3. Missing one or more maxillary posterior teeth with healing time of more than 3 months; 4. Have complete basic information and detailed surgical records; 5. Complete CBCT imaging data before surgery (T0), immediately after surgery (T1) and 6 months after surgery (T2); 6. Alveolar bone height (RBH) <=6 mm shown by CBCT at the missing tooth site in T0 stage; 7. No systemic disease before surgery, and no treatment for apical or periodontal disease.
Exclusion criteria
Exclusion criteria: 1.Untreated maxillary pathologies that had not received standard treatment. 2.Presence of conditions that may affect normal bone metabolism, such as systemic diseases known to severely impact bone metabolism (e.g., uncontrolled diabetes mellitus, osteoporosis), a history of head and neck radiotherapy, or current/recent use (within the past 6 months) of medications affecting bone metabolism (e.g., bisphosphonates, corticosteroids). 3.Pregnancy or lactation. 4.History of head and neck cancer radiotherapy within the past 5 years. 5.Presence of acute or chronic inflammation in the maxillary sinus. 6.Requirement for additional vertical or horizontal bone augmentation using intrasinus graft materials beyond the maxillary sinus floor elevation via lateral window approach. 7.Heavy smokers (daily consumption exceeding 20 cigarettes at the time of surgery).
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| buccal augmentation volume;endo-sinus bone gain;Buccal bone height;augmentation volume;apical bone height;Palatal bone height;bone window in-situ rate;palatal augmentation volume; | — |
Secondary
| Measure | Time frame |
|---|---|
| LDL/LWL ratio;implant early loss rate;sinus perforation rate; | — |
Countries
China
Contacts
Public ContactGuoli Yang
Stomatology Hospital,Zhejiang University School Medicine
Outcome results
None listed