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. 2023 Nov-Dec;27(6):590-599.
doi: 10.4103/jisp.jisp_585_22. Epub 2024 Jan 24.

Evaluation and comparison of three-dimensional finite element analysis of stress distribution in immediately placed and loaded conventional and customized three-dimensional printed dental implants

Priya Saini  1 , Vishakha Grover  1 , Shaveta Sood  1 , Ashish Jain  1 , Parveen Kalra  2
Affiliations

Evaluation and comparison of three-dimensional finite element analysis of stress distribution in immediately placed and loaded conventional and customized three-dimensional printed dental implants

Priya Saini et al. J Indian Soc Periodontol. 2023 Nov-Dec.

Abstract

Aim: The aim of this study was to evaluate and compare the stress distribution patterns in immediately placed and loaded conventional and customized three-dimensional (3D) printed dental implants by 3D finite element analysis.

Materials and methods: Twelve 3D finite element models [Group A-3 models; Group B-9 models] with 72 test conditions which were modeled and compared from customized 3D printed dental implants [Group A] and 3 commercially available implant systems [Group B] (Straumann, Ankylos, and Astratech) using "SolidWorks". All models were embedded in extraction socket models of the maxillary central incisor (CI) and Canine (C), Mandibular 1st Premolar. An occlusal loading by axial and nonaxial force of 100 N and 150 N at 30° and 45° was applied on the abutment using the "ANSYS" Suite. Customized 3D printed dental implant (Group A) for maxilla (Max.) CI, Max. C, and mandibular 1st premolar (PM) socket model was compared with three commercial available dental implant systems (Group B) for Max. CI, Max. C, and mandible (Mand.) 1st PM socket model to understand the stress distribution patterns.

Results: With increasing oblique loads, von Mises stresses were reduced for the customized group as compared to conventional implants. Increased axial loads caused proportionate increase in the stresses for both groups, yet remained under the physiologic limits in all test conditions. Higher stresses were observed in cortical bone than in cancellous bone at bone-implant contact in general. Marked reduction in von Mises stress was observed at the boundary between compact and cancellous bone. Customized 3D printed implants performed better for oblique loads and comparable for axial load stress distribution in comparison to conventional implant systems in Max. CI and C, Mand. 1st PM.

Conclusion: Thus, customized 3D printed implants appear a promising alternative for immediately placed immediately loaded protocols, with additional benefits in specific clinical situations.

Keywords: Customized three-dimensional printed dental implant; dental implant; finite element analysis; immediate implant loading; immediate implant placement.

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Conflict of interest statement

There are no conflicts of interest.

Figures

Figure 1
Figure 1
Flow of procedure for the three-dimensional virtual socket modeling of the maxilla and mandible bone and tooth in mimics innovation suite (a) CBCT scan of patient, (b) Dynamic region growing, (c) Assigning thresholding to individual component, (d) tooth with its marked dimension, (e) three-dimensional virtual socket model
Figure 2
Figure 2
Developed computer-aided design models of the dental implant, (a) Customized three-dimensional-printed dental implant model, (b) Straumann implant model, (c) Ankylos implant model, (d) Astratech implant model
Figure 3
Figure 3
Developed computer-aided design models of the dental implant embedded in bone and the meshed versions (a) Customized three-dimensional-printed dental implant model, (b) Straumann implant model, (c) Ankylos implant model, (d) Astratech implant MODEL
Figure 4
Figure 4
After applying boundary conditions and load in different directions
Figure 5
Figure 5
Sectional plots represent von Mises stresses (contour plots)
See this image and copyright information in PMC

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