Biomechanical comparison of the All-on-4, M-4, and V-4 techniques in an atrophic maxilla: A 3D finite element analysis
| Autor: | Oguz Ozan, Sevcan Kurtulmus-Yilmaz, Mazen Altagar, Aysa Ayali |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
0301 basic medicine
Dental Stress Analysis medicine.medical_treatment Finite Element Analysis Health Informatics Mandibular first molar 03 medical and health sciences 0302 clinical medicine medicine Atrophic maxilla Cortical Bone Maxilla von Mises yield criterion Humans Dental implant Mathematics Orthodontics Dental Implants Augmentation procedure Molar Finite element method Computer Science Applications Biomechanical Phenomena 030104 developmental biology medicine.anatomical_structure Dental Prosthesis Design Cortical bone Stress Mechanical 030217 neurology & neurosurgery |
| Zdroj: | Computers in biology and medicine. 123 |
| ISSN: | 1879-0534 |
| Popis: | Background Patients with severely atrophied jaws can be challenging in implantology. The All-on-4 treatment concept eliminates advanced augmentation procedures in highly resorbed ridges by preserving the relevant anatomic structures. In addition, the inclination of the distal implants enables the placement of longer implants. Hence, tilting the anterior implants allows longer implant placement, in line with the distal implants of the All-on-4 concept. This study compared the biomechanical aspects of the standard All-on-4 treatment concept with the M-4 and V-4 techniques. Methods A three-dimensional model of an edentulous maxilla was created to perform three-dimensional finite element analysis. Three different configurations (All-on-4, M-4, and V-4) were modeled by changing the tilt angle of the anterior implants. In each model, to simulate a foodstuff, a solid spherical material was placed on the midline of the incisors and the right first molar region, separately applying an occlusal load of 100 Newtons. The maximum principal stress and minimum principal stress values were acquired for cortical bone, and von Mises stress values were obtained for ductile materials. Results According to the present study's findings, although there were no considerable differences among the models, in general, the All-on-4 group demonstrated slightly higher stresses and the M-4 and V-4 group showed lower stresses. Conclusion M-4 or V-4 configurations may be used in cases of severely atrophied anterior maxillae to achieve better primary stabilization. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect