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J Indian Prosthodont Soc. 2019 Oct-Dec;19(4):353-361. doi: 10.4103/jips.jips_268_19. Epub 2019 Oct 10.

Correlation between abutment angulation and off-axial stresses on biomechanical behavior of titanium and zirconium implants in the anterior maxilla: A three-dimensional finite element analysis study.

Author information

1
Department of Prosthodontics, Mamata Dental College, Khammam, Telangana, India.

Abstract

Aim:

The aim of the present study was to evaluate the stress distribution around the titanium and zirconium implant with different abutment angulations in the anterior maxilla to off-axial load.

Setting and Design:

In vitro - Comparative study.

Materials and Methods:

Two models of titanium and zirconium implants (4 mm × 13 mm) and abutment with at 0°, 15°, 25° angulations were modeled to replace missing right central incisor using three-dimensional finite element analysis. A bite force of 178 N was applied on the lingual fossa of crowns at an angle of 120° off-axial to the long axis of implant.

Statistical Analysis Used:

Nil.

Results:

Von Misses stresses observed are as follows: (1) at the implant-bone interface Ti 0 (8.31 MPa), Zr 0 (8.57 MPa), Ti 15 (83.59 MPa), Zr 15 (98.07 MPa), Ti 25 (197.8 MPa), and Zr 25 (265.77 MPa); (2) at the implant-abutment interface Ti 0 (5.90 MPa), Zr 0 (6.45 MPa), Ti 15 (19.13 MPa), Zr 15 (19.32 MPa), Ti 25 (38.65 MPa), and Zr 25 (38.26 MPa); and (3) within superstructure Ti 0 (3.11 MPa), Zr 0 (5.02 MPa), Ti 15 (6.17 MPa), Zr 15 (5.02 MPa), Ti 25 (8.15 MPa), and Zr 25 (6.131 Mpa).

Conclusion:

Stress behavior of titanium and zirconium implant with tested abutment angulation at implant-abutment interface and within the superstructure was similar, except at implant-bone interface.

KEYWORDS:

Anterior maxilla; dental implant; esthetics; implant abutments; stress; titanium; zirconium

PMID:
31649445
PMCID:
PMC6803790
[Available on 2020-10-01]
DOI:
10.4103/jips.jips_268_19
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