Effect of maxillary sinus morphology on the safety of hydraulic sinus floor elevation: a three-dimensional finite element analysis
10.12016/j.issn.2096-1456.202660002
- Author:
LIN Xi
1
;
QUE Guoying
2
;
LIU Jia
3
;
ZHOU Zhen
1
;
ZHENG Xianghuai
4
Author Information
1. Implantology Center, Stomatological Hospital, Southern Medical University
2. Department of Endodontic, Stomatological Hospital, Southern Medical University
3. Department of Periodontology, Stomatological Hospital, Southern Medical University
4. Department of Oral and Maxillofacial Surgery, Stomatological Hospital, Southern Medical University
- Publication Type:Journal Article
- Keywords:
transcrestal maxillary sinus elevation;
sinus membrane perforation;
hydraulic sinus floor eleva⁃tion;
sinus contour;
slope type;
flat type;
concave type;
three-dimensional finite element analysis;
biomechan⁃ics;
dental implant surgery
- From:
Journal of Prevention and Treatment for Stomatological Diseases
2026;34(6):556-564
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To investigate the influence of sinus morphology on the safety of hydraulic sinus floor elevation surgery and provide a biomechanical basis for clinical treatment.
Methods:After approval by the Medical Ethics Committee of the institution, cone beam computed tomography imaging data from nine patients were collected. The sinus morphologies were classified into slope, flat and concave types. Three-dimensional finite element models of maxillary sinuses with the aforementioned morphologies were constructed using Mimics, Geomagic, Solidworks, and ANSYS software, followed by a simulation of the hydraulic elevation process. The sinus membrane elevation height was set at 1-6 mm. The pressure required for elevation and the equivalent, compressive, tensile, and shear stresses generated on the sinus membrane were recorded and analyzed. The equivalent stress distribution on the sinus membrane was visualized using contour plots.
Results:The elevation pressure and the equivalent, compressive, tensile, and shear stresses generated on the sinus membrane increased along with the elevation height. When the sinus membrane was lifted to 6 mm, the elevation pressure was (301.17 ± 98.1) kPa, (151.85 ± 3.7) kPa, and (149.36 ± 10.31) kPa in the slope, flat and concave finite element analysis models, respectively. The equivalent stress was (1 023.86 ± 201.99) kPa in the slope sinuses, comparing with (687.91 ± 69.08) kPa and (698.27 ± 96.09) kPa in the flat and concave sinuses. Higher elevation pressure and the equivalent stress, compressive stress and shear stress values were found in the slope sinus than in the flat and concave sinuses under the same elevation height (P < 0.05). Stress distribution analysis revealed that stress was uniformly distributed in the flat sinuses, followed by concave sinuses, but asymmetrically distributed in the slope sinuses
Conclusions:The slope sinuses demonstrated inferior safety and efficiency compared with the flat and concave sinuses when performing hydraulic sinus floor elevation surgery.
- Full text:2026060515382817343上颌窦底形态对液压提升手术安全性影响的三维有限元研究.pdf
