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. 2013 Nov;17(6):777-83.
doi: 10.4103/0972-124X.124504.

3D finite element analysis of immediate loading of single wide versus double implants for replacing mandibular molar

Shrikar R Desai  1 , I Karthikeyan  2 , Reetika Gaddale  3
Affiliations

3D finite element analysis of immediate loading of single wide versus double implants for replacing mandibular molar

Shrikar R Desai et al. J Indian Soc Periodontol. 2013 Nov.

Abstract

Purpose: The purpose of this finite element study was to compare the stresses, strains, and displacements of double versus single implant in immediate loading for replacing mandibular molar.

Materials and methods: Two 3D FEM (finite element method) models were made to simulate implant designs. The first model used 5-mm-wide diameter implant to support a single molar crown. The second model used 3.75-3.75 double implant design. Anisotropic properties were assigned to bone model. Each model was analyzed with single force magnitude (100 N) in vertical axis.

Results: This FEM study suggested that micromotion can be controlled better for double implants compared to single wide-diameter implants. The Von Mises stress for double implant showed 74.44% stress reduction compared to that of 5-mm implant. The Von Mises elastic strain was reduced by 61% for double implant compared to 5-mm implant.

Conclusion: Within the limitations of the study, when the mesiodistal space for artificial tooth is more than 12.5 mm, under immediate loading, the double implant support should be considered.

Keywords: Dentistry; finite element analysis; stress analysis.

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Conflict of interest statement

Conflict of Interest: None declared.

Figures

Figure 1
Figure 1
(a-d) Implant dimensions, crown dimensions, bone block, and loading condition, respectively
Figure 2
Figure 2
Total deformation of double implants
Figure 3
Figure 3
Total deformation of 5-mm implant
Figure 4
Figure 4
Sliding distance of double implants
Figure 5
Figure 5
Sliding distance of 5-mm implant
Figure 6
Figure 6
Figures 6: (a and b) Minimum principal stress of 5-mm and double implants
Figure 7
Figure 7
(a and b) Maximum principal stress of 5-mm and double implants
Figure 8
Figure 8
Von Mises strains of double implants
Figure 9
Figure 9
Von Mises strains of 5-mm implant
Figure 10
Figure 10
Von Mises stresses of double implants
Figure 11
Figure 11
Von Mises stresses of 5-mm implant
See this image and copyright information in PMC

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