Implant Angulation Effect on the Fracture Resistance of Monolithic Zirconia Custom Abutments: An In Vitro Study

Anastasia Katsavochristou; Marianella Sierraalta; Berna Saglik; Dimitrios Koumoulis; Furat George; Michael Razzoog

doi:10.1111/jopr.13127

Implant Angulation Effect on the Fracture Resistance of Monolithic Zirconia Custom Abutments: An In Vitro Study

Anastasia Katsavochristou
, Marianella Sierraalta
, Berna Saglik
, Dimitrios Koumoulis
, Furat George
, Michael Razzoog

Research output: Contribution to journal › Article › peer-review

6 Scopus citations

Abstract

Purpose: To investigate the fracture resistance and performance of zirconia when employed for the fabrication of implant abutments with different angulations, simulating anterior maxillary oral rehabilitation. Materials and Methods: Forty-five monolithic zirconia custom abutments of internal conical implant connection were CAD/CAM designed and fabricated. The specimens were divided into three groups (n = 15/group) according to implant-to-abutment angulation. The angulations used were; 0°, 15°, and 25°. The abutments were loaded until failure at 135° using the Universal Testing Machine (Instron, Canton, MA). Collected data were statistically analyzed using one-way ANOVA and post hoc Tukey test. Results: Mean (±standard deviation) load at fracture of the zirconia abutments for the three groups were 962.37 ± 93.81 N (Gr15) > 718.25 ± 93.71 N (Gr25) > 534.05 ±133.77 N (Gr0). Statistically significant difference (p < 0.0001) was found between all groups; Gr0 vs. Gr15, Gr0 vs. Gr25, Gr15 vs. Gr25. Conclusions: Contrary to expectations, the non-angulated monolithic zirconia abutments presented the lowest fracture resistance values. Angulating the abutments 15 or 25 degrees, following the palatal resorption pattern of the premaxilla, significantly increased the in vitro fracture resistance.

Original language	English
Pages (from-to)	394-400
Number of pages	7
Journal	Journal of Prosthodontics
Volume	29
Issue number	5
DOIs	https://doi.org/10.1111/jopr.13127
State	Published - Jun 1 2020

Bibliographical note

Publisher Copyright:
© 2019 by the American College of Prosthodontists

Funding

We would like to thank Rackham Graduate School and Delta Dental Foundation for the provided grants. This study was supported by the Rackham Graduate Student Research Grant, Rackham Graduate School, Ann Arbor, MI, and the Dental Master's Thesis Award, Delta Dental Foundation, Farmington Hills, MI. information This study was supported by the Rackham Graduate Student Research Grant, Rackham Graduate School, Ann Arbor, MI, and the Dental Master's Thesis Award, Delta Dental Foundation, Farmington Hills, MI.We would like to thank Rackham Graduate School and Delta Dental Foundation for the provided grants. This study was supported by the Rackham Graduate Student Research Grant, Rackham Graduate School, Ann Arbor, MI, and the Dental Master's Thesis Award, Delta Dental Foundation, Farmington Hills, MI.

Funders
Rackham Graduate School and Delta Dental Foundation
Rackham Graduate Student Research Grant, Rackham Graduate School, Ann Arbor
Delta Dental Foundation
Horace H. Rackham School of Graduate Studies, University of Michigan

Keywords

angulation
bioengineering mechanics
fracture resistance
implant
monolithic
zirconia abutment

ASJC Scopus subject areas

General Dentistry

Access to Document

10.1111/jopr.13127

Cite this

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title = "Implant Angulation Effect on the Fracture Resistance of Monolithic Zirconia Custom Abutments: An In Vitro Study",

abstract = "Purpose: To investigate the fracture resistance and performance of zirconia when employed for the fabrication of implant abutments with different angulations, simulating anterior maxillary oral rehabilitation. Materials and Methods: Forty-five monolithic zirconia custom abutments of internal conical implant connection were CAD/CAM designed and fabricated. The specimens were divided into three groups (n = 15/group) according to implant-to-abutment angulation. The angulations used were; 0°, 15°, and 25°. The abutments were loaded until failure at 135° using the Universal Testing Machine (Instron, Canton, MA). Collected data were statistically analyzed using one-way ANOVA and post hoc Tukey test. Results: Mean (±standard deviation) load at fracture of the zirconia abutments for the three groups were 962.37 ± 93.81 N (Gr15) > 718.25 ± 93.71 N (Gr25) > 534.05 ±133.77 N (Gr0). Statistically significant difference (p < 0.0001) was found between all groups; Gr0 vs. Gr15, Gr0 vs. Gr25, Gr15 vs. Gr25. Conclusions: Contrary to expectations, the non-angulated monolithic zirconia abutments presented the lowest fracture resistance values. Angulating the abutments 15 or 25 degrees, following the palatal resorption pattern of the premaxilla, significantly increased the in vitro fracture resistance.",

keywords = "angulation, bioengineering mechanics, fracture resistance, implant, monolithic, zirconia abutment",

author = "Anastasia Katsavochristou and Marianella Sierraalta and Berna Saglik and Dimitrios Koumoulis and Furat George and Michael Razzoog",

note = "Publisher Copyright: {\textcopyright} 2019 by the American College of Prosthodontists",

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doi = "10.1111/jopr.13127",

language = "English",

volume = "29",

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T2 - An In Vitro Study

AU - Katsavochristou, Anastasia

AU - Sierraalta, Marianella

AU - Saglik, Berna

AU - Koumoulis, Dimitrios

AU - George, Furat

AU - Razzoog, Michael

PY - 2020/6/1

Y1 - 2020/6/1

N2 - Purpose: To investigate the fracture resistance and performance of zirconia when employed for the fabrication of implant abutments with different angulations, simulating anterior maxillary oral rehabilitation. Materials and Methods: Forty-five monolithic zirconia custom abutments of internal conical implant connection were CAD/CAM designed and fabricated. The specimens were divided into three groups (n = 15/group) according to implant-to-abutment angulation. The angulations used were; 0°, 15°, and 25°. The abutments were loaded until failure at 135° using the Universal Testing Machine (Instron, Canton, MA). Collected data were statistically analyzed using one-way ANOVA and post hoc Tukey test. Results: Mean (±standard deviation) load at fracture of the zirconia abutments for the three groups were 962.37 ± 93.81 N (Gr15) > 718.25 ± 93.71 N (Gr25) > 534.05 ±133.77 N (Gr0). Statistically significant difference (p < 0.0001) was found between all groups; Gr0 vs. Gr15, Gr0 vs. Gr25, Gr15 vs. Gr25. Conclusions: Contrary to expectations, the non-angulated monolithic zirconia abutments presented the lowest fracture resistance values. Angulating the abutments 15 or 25 degrees, following the palatal resorption pattern of the premaxilla, significantly increased the in vitro fracture resistance.

AB - Purpose: To investigate the fracture resistance and performance of zirconia when employed for the fabrication of implant abutments with different angulations, simulating anterior maxillary oral rehabilitation. Materials and Methods: Forty-five monolithic zirconia custom abutments of internal conical implant connection were CAD/CAM designed and fabricated. The specimens were divided into three groups (n = 15/group) according to implant-to-abutment angulation. The angulations used were; 0°, 15°, and 25°. The abutments were loaded until failure at 135° using the Universal Testing Machine (Instron, Canton, MA). Collected data were statistically analyzed using one-way ANOVA and post hoc Tukey test. Results: Mean (±standard deviation) load at fracture of the zirconia abutments for the three groups were 962.37 ± 93.81 N (Gr15) > 718.25 ± 93.71 N (Gr25) > 534.05 ±133.77 N (Gr0). Statistically significant difference (p < 0.0001) was found between all groups; Gr0 vs. Gr15, Gr0 vs. Gr25, Gr15 vs. Gr25. Conclusions: Contrary to expectations, the non-angulated monolithic zirconia abutments presented the lowest fracture resistance values. Angulating the abutments 15 or 25 degrees, following the palatal resorption pattern of the premaxilla, significantly increased the in vitro fracture resistance.

KW - angulation

KW - bioengineering mechanics

KW - fracture resistance

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KW - monolithic

KW - zirconia abutment

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Implant Angulation Effect on the Fracture Resistance of Monolithic Zirconia Custom Abutments: An In Vitro Study

Abstract

Bibliographical note

Funding

Keywords

ASJC Scopus subject areas

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