Affiliation:
1. Nuh Naci Yazgan University
Abstract
Abstract
Background
Atrophy occurs in the alveolar bone in parallel with the duration of bone loss. Our study aimed to evaluate the stress levels in three different treatment options for the atrophic maxilla and to analyze these values to determine the most effective treatment method for patients.
Methods
In this study, analyses were performed using the finite element method. The study groups were as follows. 1-Four extra maxillary zygomatic implants (quad zygoma) located in the canine and six regions, respectively, in each half jaw, metal-supported porcelain prosthetic restoration. 2- After iliac bone augmentation, they will be in the canine and number six regions and all-on 4 implants and metal-supported porcelain prosthetic restoration. 3- Titanium subperiosteal implant placement and metal-supported porcelain prosthetic restoration. In this study, chewing forces of 50 N were experimentally created on the implants in all groups, 150 N obliquely in the vertical direction. In the models created, minimum stresses in the cortical bone and minimum and maximum principal stresses in the spongiose bone were observed. The Von Mises Stress values of the implants and abutments were analyzed.
Results
Stress in the alveolar bone remained within the physiological limits of the bone. However, it was determined that Group 3 created less stress on the alveolar bone than the other groups. When the Von Mises Stress values on the implants and abutments were examined, it was determined that Group 1 had the highest Von Mises Stress values, followed by Group 2, and Group 3 had the lowest Von Mises Stress values. When the stresses occurring in the prosthetic restoration were evaluated, similar results were observed.
Conclusions
When the stresses coming to the alveolar bone, the stresses to the implant and the stresses to the prosthetic superstructure are examined together in the study, the most advantageous group is 2.
Publisher
Research Square Platform LLC