Fracture Strength and Stress Distribution Analyses of CAD/CAM Titanium and Zirconia Abutments Restored with Resin-Based Ceramic and Monolithic Zirconia Crowns

Nazire Esra Özer; Ece İrem Oğuz; A. Ersoy

Makale detayları

Fracture Strength and Stress Distribution Analyses of CAD/CAM Titanium and Zirconia Abutments Restored with Resin-Based Ceramic and Monolithic Zirconia Crowns

Yazarlar:

Nazire Esra Özer | Ece İrem Oğuz | A. Ersoy

Yayıncı:

Ankara University

Ana Başlıklar:

Prosthodontics

Dergi:

European Annals of Dental Sciences Vol.52 Issue 2, pp.55-62

Belge Tipi:

Makale

Yayın Tarihi:

8/2025

Belge Dili:

İngilizce

Document ID (Org No.):

2001355088

pISSN:

2757-6744

Anahtar kelimeler:

Özet:

 Purpose: The aim of this study was to evaluate the effect of two different crown and abutment types produced with CADCAM systems on the biomechanical behavior of implant-supported fixed restorations. Material and methods: Thirty-six titanium implants received either custom-made zirconia abutments cemented on a ti-base Zi or single-piece custom titanium abutment Ti. Then, resin-based ceramic crowns RBC crowns were manufactured for half of each abutment type and monolithic zirconia crowns MZ were manufactured for the other half. Thus, 4 study groups were formed as follows: Zi-RBC, Zi-MZ, Ti-RBC, Ti-MZ. Fracture resistance of the groups was tested using a universal testing machine and the failure types were determined. The stress distribution on abutments and crowns was evaluated with finite element analysis FEA analysis. Results: Zirconia, as the abutment type, showed higher fracture strength for both crown types. Considering the crown material, monolithic zirconia showed higher fracture strength for both abutment types. None of the groups showed screw or implant deformation. Ti-RBC and Ti-MZ groups showed only crown failures while 22 of Group Zi-RBC and 44 of Group Zi-MZ showed abutment fractures in addition to crown fractures. FEA analysis did not show significant differences for crowns while differences were observed for abutments. Conclusion: Zirconia abutments cemented on titanium bases can be considered an acceptable alternative to titanium abutments. Monolithic zirconia may provide longer intraoral service than resin-based ceramic as the crown material considering its higher resistance to fracture.

 Purpose: The aim of this study was to evaluate the effect of two different crown and abutment types produced with CADCAM systems on the biomechanical behavior of implant-supported fixed restorations. Material and methods: Thirty-six titanium implants received either custom-made zirconia abutments cemented on a ti-base Zi or single-piece custom titanium abutment Ti. Then, resin-based ceramic crowns RBC crowns were manufactured for half of each abutment type and monolithic zirconia crowns MZ were manufactured for the other half. Thus, 4 study groups were formed as follows: Zi-RBC, Zi-MZ, Ti-RBC, Ti-MZ. Fracture resistance of the groups was tested using a universal testing machine and the failure types were determined. The stress distribution on abutments and crowns was evaluated with finite element analysis FEA analysis. Results: Zirconia, as the abutment type, showed higher fracture strength for both crown types. Considering the crown material, monolithic zirconia showed higher fracture strength for both abutment types. None of the groups showed screw or implant deformation. Ti-RBC and Ti-MZ groups showed only crown failures while 22 of Group Zi-RBC and 44 of Group Zi-MZ showed abutment fractures in addition to crown fractures. FEA analysis did not show significant differences for crowns while differences were observed for abutments. Conclusion: Zirconia abutments cemented on titanium bases can be considered an acceptable alternative to titanium abutments. Monolithic zirconia may provide longer intraoral service than resin-based ceramic as the crown material considering its higher resistance to fracture.

 Purpose: The aim of this study was to evaluate the effect of two different crown and abutment types produced with CADCAM systems on the biomechanical behavior of implant-supported fixed restorations. Material and methods: Thirty-six titanium implants received either custom-made zirconia abutments cemented on a ti-base Zi or single-piece custom titanium abutment Ti. Then, resin-based ceramic crowns RBC crowns were manufactured for half of each abutment type and monolithic zirconia crowns MZ were manufactured for the other half. Thus, 4 study groups were formed as follows: Zi-RBC, Zi-MZ, Ti-RBC, Ti-MZ. Fracture resistance of the groups was tested using a universal testing machine and the failure types were determined. The stress distribution on abutments and crowns was evaluated with finite element analysis FEA analysis. Results: Zirconia, as the abutment type, showed higher fracture strength for both crown types. Considering the crown material, monolithic zirconia showed higher fracture strength for both abutment types. None of the groups showed screw or implant deformation. Ti-RBC and Ti-MZ groups showed only crown failures while 22 of Group Zi-RBC and 44 of Group Zi-MZ showed abutment fractures in addition to crown fractures. FEA analysis did not show significant differences for crowns while differences were observed for abutments. Conclusion: Zirconia abutments cemented on titanium bases can be considered an acceptable alternative to titanium abutments. Monolithic zirconia may provide longer intraoral service than resin-based ceramic as the crown material considering its higher resistance to fracture.

 Purpose: The aim of this study was to evaluate the effect of two different crown and abutment types produced with CADCAM systems on the biomechanical behavior of implant-supported fixed restorations. Material and methods: Thirty-six titanium implants received either custom-made zirconia abutments cemented on a ti-base Zi or single-piece custom titanium abutment Ti. Then, resin-based ceramic crowns RBC crowns were manufactured for half of each abutment type and monolithic zirconia crowns MZ were manufactured for the other half. Thus, 4 study groups were formed as follows: Zi-RBC, Zi-MZ, Ti-RBC, Ti-MZ. Fracture resistance of the groups was tested using a universal testing machine and the failure types were determined. The stress distribution on abutments and crowns was evaluated with finite element analysis FEA analysis. Results: Zirconia, as the abutment type, showed higher fracture strength for both crown types. Considering the crown material, monolithic zirconia showed higher fracture strength for both abutment types. None of the groups showed screw or implant deformation. Ti-RBC and Ti-MZ groups showed only crown failures while 22 of Group Zi-RBC and 44 of Group Zi-MZ showed abutment fractures in addition to crown fractures. FEA analysis did not show significant differences for crowns while differences were observed for abutments. Conclusion: Zirconia abutments cemented on titanium bases can be considered an acceptable alternative to titanium abutments. Monolithic zirconia may provide longer intraoral service than resin-based ceramic as the crown material considering its higher resistance to fracture.

Makale detayları

Fracture Strength and Stress Distribution Analyses of CAD/CAM Titanium and Zirconia Abutments Restored with Resin-Based Ceramic and Monolithic Zirconia Crowns

Yazarlar:

Nazire Esra Özer | Ece İrem Oğuz | A. Ersoy

Yayıncı:

Ankara University

Ana Başlıklar:

Prosthodontics

Dergi:

European Annals of Dental Sciences Vol.52 Issue 2, pp.55-62

Belge Tipi:

Makale

Yayın Tarihi:

8/2025

Belge Dili:

İngilizce

Document ID (Org No.):

2001355088

pISSN:

2757-6744

Zirconia

Implant-Supported Fixed Prostheses

Ti-base

Finite Element Stress Analysis

Sayı

Makale detayları

Fracture Strength and Stress Distribution Analyses of CAD/CAM Titanium and Zirconia Abutments Restored with Resin-Based Ceramic and Monolithic Zirconia Crowns

Yazarlar: Nazire Esra Özer | Ece İrem Oğuz | A. Ersoy

Yayıncı: Ankara University

Ana Başlıklar: Prosthodontics

Dergi: European Annals of Dental Sciences Vol.52 Issue 2, pp.55-62

Belge Tipi: Makale

Yayın Tarihi: 8/2025

Belge Dili: İngilizce

Document ID (Org No.): 2001355088

pISSN: 2757-6744

Zirconia

Implant-Supported Fixed Prostheses

Ti-base

Finite Element Stress Analysis

Sayı

Yazarlar:

Nazire Esra Özer | Ece İrem Oğuz | A. Ersoy

Yayıncı:

Ankara University

Ana Başlıklar:

Prosthodontics

Dergi:

European Annals of Dental Sciences Vol.52 Issue 2, pp.55-62

Belge Tipi:

Makale

Yayın Tarihi:

8/2025

Belge Dili:

İngilizce

Document ID (Org No.):

2001355088

pISSN:

2757-6744