Clinical Application Strategies of Maxillary Sinus Buccal Bony Window

The Dental Hospital of Zhejiang University School of Medicine60 enrolled

Overview

Through randomized controlled trials, investigators will recruit participants who need maxillary sinus floor elevation with different residual bone height, and utilize the maxillary sinus buccal bony window during the surgery. Then investigators will gather the related information of participants, collect and analyze their CBCT data, in order to help surgeons select the best operating method for different patients.

Through randomized controlled trials, investigators will recruit 60 participants who need maxillary sinus floor elevation with different residual bone height (0\~3mm; 3\~5mm), and utilize the maxillary sinus buccal bony window during the surgery (A: ground into pieces; B: replace the bone; C: turn inward to hold up the membrane). Then investigators will gather the related information of participants, collect and analyze their CBCT data, in order to help surgeons select the best operating method for different patients.

Study Type

INTERVENTIONAL

Allocation

RANDOMIZED

Purpose

TREATMENT

Masking

TRIPLE

Enrollment

Conditions

Sinus Floor Augmentation Maxillary Sinus

Eligibility

Sex: ALLMin age: 18 YearsMax age: 80 YearsHealthy volunteers:

Medical Language ↔ Plain English

Inclusion Criteria: * A single maxillary posterior tooth was missing, and the missing time was ≥ 3 months * Gingival distance ≥ 4mm * Residual bone height ≤ 5mm and residual bone width ≥ 6mm * Good systemic health * CBCT image was complete and clear, and there was no obvious artifact affecting the measurement * Informed consent. Exclusion Criteria: * Untreated diabetes or other serious systemic diseases * Untreated periodontal disease * Uncontrolled periapical lesions of adjacent teeth * Certain bone diseases such as osteoporosis and osteosclerosis * Severe night bruxism * Mental illness * Pregnant or breast-feeding patients.

Outcomes

Primary Outcomes

ABH change

Apical bone height (ABH): Represented the grafted height at baseline and the grafted height with neo-formed bone at follow-ups.

Time frame: baseline, 6 months, and 1, 2, 3, 5, 10 years after the surgery

ESBG change

Endo-sinus bone gain (ESBG): ESBG = ABH + implant protrusion length at baseline; ESBG represented the grafted height and neo-formed bone, and described the height difference of radiopaque area in the sinus cavity at different times.

Time frame: baseline, 6 months, and 1, 2, 3, 5, 10 years after the surgery

RBH

Residual bone height (RBH): Only assessed at baseline

Time frame: baseline