Influence of the Angle of Cervical Convergence on Stresses to the PDL of Abutments: A 3D Analysis Using Finite Element Method

Influence of the Angle of Cervical Convergence on Stresses to the PDL of Abutments: A 3D Analysis Using Finite Element Method

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Objective: This study was designed to compare the stress produced at the PDL of abutment teeth with two angles of cervical convergence, in otherwise similar settings.Materials and Methods: Two finite element models were designed for lin76 a second premolar and a removable partial denture frame containing an I-bar clasp.Maximum Principal Stress (S1) and Von Mises Stress (SEQV) were assessed along a cervico-apical path of nodes in the PDL.

Results: Output data for S1 and SEQV were the same regarding the height of contour.A gradual decrease in both models was observed.A larger decrease was found in the model with the higher angle of sweet life carts cervical convergence.

Conclusion: I-bars placed on teeth with lower angles of cervical convergence produce a higher stress to the PDL of abutments.