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Fracture strength of zirconia implant abutments on narrow diameter implants with internal and external implant abutment connections: A study on the titanium resin base concept.
Clin Oral Implants Res. 2018 Apr; 29(4):411-423.CO

Abstract

BACKGROUND

There is limited knowledge regarding the strength of zirconia abutments with internal and external implant abutment connections and zirconia abutments supported by a titanium resin base (Variobase, Straumann) for narrow diameter implants.

OBJECTIVES

To compare the fracture strength of narrow diameter abutments with different types of implant abutment connections after chewing simulation.

MATERIAL AND METHODS

Hundred and twenty identical customized abutments with different materials and implant abutment connections were fabricated for five groups: 1-piece zirconia abutment with internal connection (T1, Cares-abutment-Straumann BL-NC implant, Straumann Switzerland), 1-piece zirconia abutment with external hex connection (T2, Procera abutment-Branemark NP implant, Nobel Biocare, Sweden), 2-piece zirconia abutments with metallic insert for internal connection (T3, Procera abutment-Replace NP implant, Nobel Biocare), 2-piece zirconia abutment on titanium resin base (T4, LavaPlus abutment-VarioBase-Straumann BL-NC implant, 3M ESPE, Germany) and 1-piece titanium abutment with internal connection (C, Cares-abutment-Straumann BL-NC implant, Straumann, Switzerland). All implants had a narrow diameter ranging from 3.3 to 3.5 mm. Sixty un-restored abutments and 60 abutments restored with glass-ceramic crowns were tested. Mean bending moments were compared using ANOVA with p-values adjusted for multiple comparisons using Tukey's procedure.

RESULTS

The mean bending moments were 521 ± 33 Ncm (T4), 404 ± 36 Ncm (C), 311 ± 106 Ncm (T1) 265 ± 22 Ncm (T3) and 225 ± 29 (T2) for un-restored abutments and 278 ± 84 Ncm (T4), 302 ± 170 Ncm (C), 190 ± 55 Ncm (T1) 80 ± 102 Ncm (T3) and 125 ± 57 (T2) for restored abutments. For un-restored abutments, C and T4 had similar mean bending moments, significantly higher than those of the three other groups (p < .05). Titanium abutments (C) had significantly higher bending moments than identical zirconia abutments (T1) (p < .05). Zirconia abutments (T1) with internal connection had higher bending moments than zirconia abutments with external connection (T2) (p < .05). For all test groups, the bending moments were significantly reduced when restored with all-ceramic crowns.

CONCLUSIONS

For narrow diameter abutments, the fracture strength of 2-piece internal connected zirconia abutments fixed on titanium resin bases was similar to those obtained for 1-piece titanium abutments. Narrow diameter zirconia abutments with internal connection exhibited higher fracture strength than zirconia abutments with an external connection. Titanium abutments with an internal connection were significantly stronger than identical zirconia abutments.

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Publisher Full Text (DOI)

Authors+Show Affiliations

Sailer I
Division of Fixed Prosthodontics and Biomaterials, University Clinic of Dental Medicine, University of Geneva, Geneva, Switzerland.
Asgeirsson AG
Clinic of Fixed and Removable Prosthodontics and Dental Material Science, Center of Dental Medicine, University of Zurich, Zurich, Switzerland.
Thoma DS
Clinic of Fixed and Removable Prosthodontics and Dental Material Science, Center of Dental Medicine, University of Zurich, Zurich, Switzerland.
Fehmer V
Division of Fixed Prosthodontics and Biomaterials, University Clinic of Dental Medicine, University of Geneva, Geneva, Switzerland.
Aspelund T
Public Health Sciences, University of Iceland, Reykjavik, Iceland.
Özcan M
Clinic of Fixed and Removable Prosthodontics and Dental Material Science, Center of Dental Medicine, University of Zurich, Zurich, Switzerland.
Pjetursson BE
Division of Fixed Prosthodontics and Biomaterials, University Clinic of Dental Medicine, University of Geneva, Geneva, Switzerland. Clinic for Reconstructive Dentistry, Faculty of Odontology, University of Iceland, Reykjavik, Iceland.

MeSH

Dental AbutmentsDental Implant-Abutment DesignDental MaterialsDental Stress AnalysisMaterials TestingTitaniumZirconium

Pub Type(s)

Comparative Study
Journal Article

Language

eng

PubMed ID

29527740

Citation

Sailer, Irena, et al. "Fracture Strength of Zirconia Implant Abutments On Narrow Diameter Implants With Internal and External Implant Abutment Connections: a Study On the Titanium Resin Base Concept." Clinical Oral Implants Research, vol. 29, no. 4, 2018, pp. 411-423.
Sailer I, Asgeirsson AG, Thoma DS, et al. Fracture strength of zirconia implant abutments on narrow diameter implants with internal and external implant abutment connections: A study on the titanium resin base concept. Clin Oral Implants Res. 2018;29(4):411-423.
Sailer, I., Asgeirsson, A. G., Thoma, D. S., Fehmer, V., Aspelund, T., Özcan, M., & Pjetursson, B. E. (2018). Fracture strength of zirconia implant abutments on narrow diameter implants with internal and external implant abutment connections: A study on the titanium resin base concept. Clinical Oral Implants Research, 29(4), 411-423. https://doi.org/10.1111/clr.13139
Sailer I, et al. Fracture Strength of Zirconia Implant Abutments On Narrow Diameter Implants With Internal and External Implant Abutment Connections: a Study On the Titanium Resin Base Concept. Clin Oral Implants Res. 2018;29(4):411-423. PubMed PMID: 29527740.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Fracture strength of zirconia implant abutments on narrow diameter implants with internal and external implant abutment connections: A study on the titanium resin base concept. AU - Sailer,Irena, AU - Asgeirsson,Asgeir G, AU - Thoma,Daniel S, AU - Fehmer,Vincent, AU - Aspelund,Thor, AU - Özcan,Mutlu, AU - Pjetursson,Bjarni E, Y1 - 2018/03/11/ PY - 2018/01/20/accepted PY - 2018/3/13/pubmed PY - 2019/2/8/medline PY - 2018/3/13/entrez KW - aging KW - bending moment KW - hybrid abutment KW - implant abutment KW - implant abutment connection KW - titanium resin base KW - zirconia abutment SP - 411 EP - 423 JF - Clinical oral implants research JO - Clin Oral Implants Res VL - 29 IS - 4 N2 - BACKGROUND: There is limited knowledge regarding the strength of zirconia abutments with internal and external implant abutment connections and zirconia abutments supported by a titanium resin base (Variobase, Straumann) for narrow diameter implants. OBJECTIVES: To compare the fracture strength of narrow diameter abutments with different types of implant abutment connections after chewing simulation. MATERIAL AND METHODS: Hundred and twenty identical customized abutments with different materials and implant abutment connections were fabricated for five groups: 1-piece zirconia abutment with internal connection (T1, Cares-abutment-Straumann BL-NC implant, Straumann Switzerland), 1-piece zirconia abutment with external hex connection (T2, Procera abutment-Branemark NP implant, Nobel Biocare, Sweden), 2-piece zirconia abutments with metallic insert for internal connection (T3, Procera abutment-Replace NP implant, Nobel Biocare), 2-piece zirconia abutment on titanium resin base (T4, LavaPlus abutment-VarioBase-Straumann BL-NC implant, 3M ESPE, Germany) and 1-piece titanium abutment with internal connection (C, Cares-abutment-Straumann BL-NC implant, Straumann, Switzerland). All implants had a narrow diameter ranging from 3.3 to 3.5 mm. Sixty un-restored abutments and 60 abutments restored with glass-ceramic crowns were tested. Mean bending moments were compared using ANOVA with p-values adjusted for multiple comparisons using Tukey's procedure. RESULTS: The mean bending moments were 521 ± 33 Ncm (T4), 404 ± 36 Ncm (C), 311 ± 106 Ncm (T1) 265 ± 22 Ncm (T3) and 225 ± 29 (T2) for un-restored abutments and 278 ± 84 Ncm (T4), 302 ± 170 Ncm (C), 190 ± 55 Ncm (T1) 80 ± 102 Ncm (T3) and 125 ± 57 (T2) for restored abutments. For un-restored abutments, C and T4 had similar mean bending moments, significantly higher than those of the three other groups (p < .05). Titanium abutments (C) had significantly higher bending moments than identical zirconia abutments (T1) (p < .05). Zirconia abutments (T1) with internal connection had higher bending moments than zirconia abutments with external connection (T2) (p < .05). For all test groups, the bending moments were significantly reduced when restored with all-ceramic crowns. CONCLUSIONS: For narrow diameter abutments, the fracture strength of 2-piece internal connected zirconia abutments fixed on titanium resin bases was similar to those obtained for 1-piece titanium abutments. Narrow diameter zirconia abutments with internal connection exhibited higher fracture strength than zirconia abutments with an external connection. Titanium abutments with an internal connection were significantly stronger than identical zirconia abutments. SN - 1600-0501 UR - https://www.unboundmedicine.com/medline/citation/29527740/Fracture_strength_of_zirconia_implant_abutments_on_narrow_diameter_implants_with_internal_and_external_implant_abutment_connections:_A_study_on_the_titanium_resin_base_concept_ DB - PRIME DP - Unbound Medicine ER -