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Suitability of Secondary PEEK Telescopic Crowns on Zirconia Primary Crowns: The Influence of Fabrication Method and Taper

This study investigates the retention load (RL) between ZrO(2) primary crowns and secondary polyetheretherketone (PEEK) crowns made by different fabrication methods with three different tapers. Standardized primary ZrO(2) crowns were fabricated with three different tapers: 0°, 1°, and 2° (n = 10/gro...

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Autores principales: Merk, Susanne, Wagner, Christina, Stock, Veronika, Eichberger, Marlis, Schmidlin, Patrick R., Roos, Malgorzata, Stawarczyk, Bogna
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2016
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5457267/
https://www.ncbi.nlm.nih.gov/pubmed/28774027
http://dx.doi.org/10.3390/ma9110908
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author Merk, Susanne
Wagner, Christina
Stock, Veronika
Eichberger, Marlis
Schmidlin, Patrick R.
Roos, Malgorzata
Stawarczyk, Bogna
author_facet Merk, Susanne
Wagner, Christina
Stock, Veronika
Eichberger, Marlis
Schmidlin, Patrick R.
Roos, Malgorzata
Stawarczyk, Bogna
author_sort Merk, Susanne
collection PubMed
description This study investigates the retention load (RL) between ZrO(2) primary crowns and secondary polyetheretherketone (PEEK) crowns made by different fabrication methods with three different tapers. Standardized primary ZrO(2) crowns were fabricated with three different tapers: 0°, 1°, and 2° (n = 10/group). Ten secondary crowns were fabricated (i) milled from breCam BioHPP blanks (PM); (ii) pressed from industrially fabricated PEEK pellets (PP) (BioHPP Pellet); or (iii) pressed from granular PEEK (PG) (BioHPP Granulat). One calibrated operator adjusted all crowns. In total, the RL of 90 secondary crowns were measured in pull-off tests at 50 mm/min, and each specimen was tested 20 times. Two- and one-way ANOVAs followed by a Scheffé’s post-hoc test were used for data analysis (p < 0.05). Within crowns with a 0° taper, the PP group showed significantly higher retention load values compared with the other groups. Among the 1° taper, the PM group presented significantly lower retention loads than the PP group. However, the pressing type had no impact on the results. Within the 2° taper, the fabrication method had no influence on the RL. Within the PM group, the 2° taper showed significantly higher retention load compared with the 1° taper. The taper with 0° was in the same range value as the 1° and 2° tapers. No impact of the taper on the retention value was observed between the PP groups. Within the PG groups, the 0° taper presented significantly lower RL than the 1° taper, whereas the 2° taper showed no differences. The fabrication method of the secondary PEEK crowns and taper angles showed no consistent effect within all tested groups.
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spelling pubmed-54572672017-07-28 Suitability of Secondary PEEK Telescopic Crowns on Zirconia Primary Crowns: The Influence of Fabrication Method and Taper Merk, Susanne Wagner, Christina Stock, Veronika Eichberger, Marlis Schmidlin, Patrick R. Roos, Malgorzata Stawarczyk, Bogna Materials (Basel) Article This study investigates the retention load (RL) between ZrO(2) primary crowns and secondary polyetheretherketone (PEEK) crowns made by different fabrication methods with three different tapers. Standardized primary ZrO(2) crowns were fabricated with three different tapers: 0°, 1°, and 2° (n = 10/group). Ten secondary crowns were fabricated (i) milled from breCam BioHPP blanks (PM); (ii) pressed from industrially fabricated PEEK pellets (PP) (BioHPP Pellet); or (iii) pressed from granular PEEK (PG) (BioHPP Granulat). One calibrated operator adjusted all crowns. In total, the RL of 90 secondary crowns were measured in pull-off tests at 50 mm/min, and each specimen was tested 20 times. Two- and one-way ANOVAs followed by a Scheffé’s post-hoc test were used for data analysis (p < 0.05). Within crowns with a 0° taper, the PP group showed significantly higher retention load values compared with the other groups. Among the 1° taper, the PM group presented significantly lower retention loads than the PP group. However, the pressing type had no impact on the results. Within the 2° taper, the fabrication method had no influence on the RL. Within the PM group, the 2° taper showed significantly higher retention load compared with the 1° taper. The taper with 0° was in the same range value as the 1° and 2° tapers. No impact of the taper on the retention value was observed between the PP groups. Within the PG groups, the 0° taper presented significantly lower RL than the 1° taper, whereas the 2° taper showed no differences. The fabrication method of the secondary PEEK crowns and taper angles showed no consistent effect within all tested groups. MDPI 2016-11-08 /pmc/articles/PMC5457267/ /pubmed/28774027 http://dx.doi.org/10.3390/ma9110908 Text en © 2016 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC-BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Merk, Susanne
Wagner, Christina
Stock, Veronika
Eichberger, Marlis
Schmidlin, Patrick R.
Roos, Malgorzata
Stawarczyk, Bogna
Suitability of Secondary PEEK Telescopic Crowns on Zirconia Primary Crowns: The Influence of Fabrication Method and Taper
title Suitability of Secondary PEEK Telescopic Crowns on Zirconia Primary Crowns: The Influence of Fabrication Method and Taper
title_full Suitability of Secondary PEEK Telescopic Crowns on Zirconia Primary Crowns: The Influence of Fabrication Method and Taper
title_fullStr Suitability of Secondary PEEK Telescopic Crowns on Zirconia Primary Crowns: The Influence of Fabrication Method and Taper
title_full_unstemmed Suitability of Secondary PEEK Telescopic Crowns on Zirconia Primary Crowns: The Influence of Fabrication Method and Taper
title_short Suitability of Secondary PEEK Telescopic Crowns on Zirconia Primary Crowns: The Influence of Fabrication Method and Taper
title_sort suitability of secondary peek telescopic crowns on zirconia primary crowns: the influence of fabrication method and taper
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5457267/
https://www.ncbi.nlm.nih.gov/pubmed/28774027
http://dx.doi.org/10.3390/ma9110908
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