Fracture load of ceramic crowns supported by some novel anchoring dental systems
Objective: This study aimed to evaluate the fracture load of endocrown restorations and fiber-reinforced composites (FRCs) fabricated through computer-aided design/computer-aided manufacturing (CAD-CAM) for post–cores of anterior teeth. Materials and Method: Forty post–core-supported crowns and end...
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Gazi University
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doaj-4823b95d405c4ed4a11f867516eeccf62021-09-02T02:01:06ZengGazi UniversityActa Odontologica Turcica2147-690X2018-05-01352333710.17214/gaziaot.327867Fracture load of ceramic crowns supported by some novel anchoring dental systemsIsil Cekic NagasEmre NagasFerhan EgilmezGulfem ErgunPekka VallittuLippo LassilaObjective: This study aimed to evaluate the fracture load of endocrown restorations and fiber-reinforced composites (FRCs) fabricated through computer-aided design/computer-aided manufacturing (CAD-CAM) for post–cores of anterior teeth. Materials and Method: Forty post–core-supported crowns and endocrowns were fabricated through CAD-CAM on a canine root zirconia model (Ice Zirconia, ZirkonZahn GmBH, Bruneck, Italy). The static load-bearing capacity was measured on the following restoration groups: Group 1: zirconia crown (Prettau anterior, ZirkonZahn GmBH) retained with CAD-CAM one-piece FRC post-core crown system (experimental CAD-CAM FRC block); Group 2: zirconia crown (Prettau anterior) retained with FRC post (GC Corp., Tokyo, Japan) with discontinuous fiber composite (EverX posterior, GC Corp) core; Group 3: zirconia endocrown (Prettau anterior); and Group 4: lithium disilicate ceramic endocrown (IPS e.max CAD, Ivoclar Vivadent AG, Schaan, Liechtenstein) (n = 10/per group). After the adhesive cementation of crowns/endocrowns to the zirconia root model, a load was applied at 45° to the long axis of the teeth and measured using a universal testing machine. The fracture modes were visually examined. The statistical analyses were performed using one-way ANOVA and Tukey post-hoc tests (p < 0.05). Results: The fracture load significantly differed among the groups (p < 0.05) and was ranked as follows: Group 3 (1168 ± 141 N) > Group 4 (721 ± 96 N) ≥ Group 1 (680 ± 86 N) > Group 2 (534 ± 36 N). Conclusion: Endocrown monoblock restorations can be used as an alternative to fiber-reinforced post–core supported crown restorations.http://dergipark.gov.tr/download/article-file/456553CeramicsComputer-aided manufacturingPost and core techniqueComputer-aided designPost and core technique |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Isil Cekic Nagas Emre Nagas Ferhan Egilmez Gulfem Ergun Pekka Vallittu Lippo Lassila |
spellingShingle |
Isil Cekic Nagas Emre Nagas Ferhan Egilmez Gulfem Ergun Pekka Vallittu Lippo Lassila Fracture load of ceramic crowns supported by some novel anchoring dental systems Acta Odontologica Turcica Ceramics Computer-aided manufacturing Post and core technique Computer-aided design Post and core technique |
author_facet |
Isil Cekic Nagas Emre Nagas Ferhan Egilmez Gulfem Ergun Pekka Vallittu Lippo Lassila |
author_sort |
Isil Cekic Nagas |
title |
Fracture load of ceramic crowns supported by some novel anchoring dental systems |
title_short |
Fracture load of ceramic crowns supported by some novel anchoring dental systems |
title_full |
Fracture load of ceramic crowns supported by some novel anchoring dental systems |
title_fullStr |
Fracture load of ceramic crowns supported by some novel anchoring dental systems |
title_full_unstemmed |
Fracture load of ceramic crowns supported by some novel anchoring dental systems |
title_sort |
fracture load of ceramic crowns supported by some novel anchoring dental systems |
publisher |
Gazi University |
series |
Acta Odontologica Turcica |
issn |
2147-690X |
publishDate |
2018-05-01 |
description |
Objective: This study aimed to evaluate the fracture load of endocrown restorations and fiber-reinforced composites (FRCs) fabricated through computer-aided design/computer-aided manufacturing (CAD-CAM) for post–cores of anterior teeth.
Materials and Method: Forty post–core-supported crowns and endocrowns were fabricated through CAD-CAM on a canine root zirconia model (Ice Zirconia, ZirkonZahn GmBH, Bruneck, Italy). The static load-bearing capacity was measured on the following restoration groups: Group 1: zirconia crown (Prettau anterior, ZirkonZahn GmBH) retained with CAD-CAM one-piece FRC post-core crown system (experimental CAD-CAM FRC block); Group 2: zirconia crown (Prettau anterior) retained with FRC post (GC Corp., Tokyo, Japan) with discontinuous fiber composite (EverX posterior, GC Corp) core; Group 3: zirconia endocrown (Prettau anterior); and Group 4: lithium disilicate ceramic endocrown (IPS e.max CAD, Ivoclar Vivadent AG, Schaan, Liechtenstein) (n = 10/per group). After the adhesive cementation of crowns/endocrowns to the zirconia root model, a load was applied at 45° to the long axis of the teeth and measured using a universal testing machine. The fracture modes were visually examined. The statistical analyses were performed using one-way ANOVA and Tukey post-hoc tests (p < 0.05).
Results: The fracture load significantly differed among the groups (p < 0.05) and was ranked as follows: Group 3 (1168 ± 141 N) > Group 4 (721 ± 96 N) ≥ Group 1 (680 ± 86 N) > Group 2 (534 ± 36 N).
Conclusion: Endocrown monoblock restorations can be used as an alternative to fiber-reinforced post–core supported crown restorations. |
topic |
Ceramics Computer-aided manufacturing Post and core technique Computer-aided design Post and core technique |
url |
http://dergipark.gov.tr/download/article-file/456553 |
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