Influence of Teeth Preparation Finishing on the Adaptation of Lithium Disilicate Crowns

The polishing step of teeth preparations for crowns is a step often performed, so that there is an increased time during the clinical procedure. The aim of this study is to evaluate the marginal and internal adaptation of all-ceramic CAD/CAM lithium disilicate crowns in polished preparations for cro...

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Main Authors: Bruna Salamoni Sinhori, Mauro Amaral Caldeira de Andrada, Guilherme Carpena Lopes, Sylvio Monteiro Junior, Luiz Narciso Baratieri
Format: Article
Language:English
Published: Wiley 2017-01-01
Series:International Journal of Biomaterials
Online Access:http://dx.doi.org/10.1155/2017/2078526
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author Bruna Salamoni Sinhori
Mauro Amaral Caldeira de Andrada
Guilherme Carpena Lopes
Sylvio Monteiro Junior
Luiz Narciso Baratieri
author_facet Bruna Salamoni Sinhori
Mauro Amaral Caldeira de Andrada
Guilherme Carpena Lopes
Sylvio Monteiro Junior
Luiz Narciso Baratieri
author_sort Bruna Salamoni Sinhori
collection DOAJ
description The polishing step of teeth preparations for crowns is a step often performed, so that there is an increased time during the clinical procedure. The aim of this study is to evaluate the marginal and internal adaptation of all-ceramic CAD/CAM lithium disilicate crowns in polished preparations for crown and nonpolished preparations for crowns. For this purpose, 20 first molars were selected, which were divided into two groups (n=10) G1, teeth that received surface roughening similar to preparation without polishing, and G2 (control), polished preparations. After the preparations were completed the teeth were scanned (Cerec Bluecam, Sirona, Bensheim, Germany), and the crowns were designed and machined using CAD/CAM technology (Sirona, Bensheim, Germany). The adaptation of the pieces was evaluated using polyvinyl siloxane replicas and stereomicroscope photographs with 70x magnifications. The normality test indicated a nonnormal result, so a Man–Whitney nonparametric test was performed. One out of the 24 measured regions showed a statistically significant difference (p=0.0494). With this study it can be concluded that crowns fabricated by CAD/CAM technology performed on unpolished preparations are not influenced by the internal marginal adaptation and the ceramic part and are different from polished preparations.
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language English
publishDate 2017-01-01
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series International Journal of Biomaterials
spelling doaj-art-5632d0884d664f9996222b0ba5a2146d2025-02-03T05:59:55ZengWileyInternational Journal of Biomaterials1687-87871687-87952017-01-01201710.1155/2017/20785262078526Influence of Teeth Preparation Finishing on the Adaptation of Lithium Disilicate CrownsBruna Salamoni Sinhori0Mauro Amaral Caldeira de Andrada1Guilherme Carpena Lopes2Sylvio Monteiro Junior3Luiz Narciso Baratieri4Federal University of Santa Catarina, Florianopolis, SC, BrazilFederal University of Santa Catarina, Florianopolis, SC, BrazilFederal University of Santa Catarina, Florianopolis, SC, BrazilFederal University of Santa Catarina, Florianopolis, SC, BrazilFederal University of Santa Catarina, Florianopolis, SC, BrazilThe polishing step of teeth preparations for crowns is a step often performed, so that there is an increased time during the clinical procedure. The aim of this study is to evaluate the marginal and internal adaptation of all-ceramic CAD/CAM lithium disilicate crowns in polished preparations for crown and nonpolished preparations for crowns. For this purpose, 20 first molars were selected, which were divided into two groups (n=10) G1, teeth that received surface roughening similar to preparation without polishing, and G2 (control), polished preparations. After the preparations were completed the teeth were scanned (Cerec Bluecam, Sirona, Bensheim, Germany), and the crowns were designed and machined using CAD/CAM technology (Sirona, Bensheim, Germany). The adaptation of the pieces was evaluated using polyvinyl siloxane replicas and stereomicroscope photographs with 70x magnifications. The normality test indicated a nonnormal result, so a Man–Whitney nonparametric test was performed. One out of the 24 measured regions showed a statistically significant difference (p=0.0494). With this study it can be concluded that crowns fabricated by CAD/CAM technology performed on unpolished preparations are not influenced by the internal marginal adaptation and the ceramic part and are different from polished preparations.http://dx.doi.org/10.1155/2017/2078526
spellingShingle Bruna Salamoni Sinhori
Mauro Amaral Caldeira de Andrada
Guilherme Carpena Lopes
Sylvio Monteiro Junior
Luiz Narciso Baratieri
Influence of Teeth Preparation Finishing on the Adaptation of Lithium Disilicate Crowns
International Journal of Biomaterials
title Influence of Teeth Preparation Finishing on the Adaptation of Lithium Disilicate Crowns
title_full Influence of Teeth Preparation Finishing on the Adaptation of Lithium Disilicate Crowns
title_fullStr Influence of Teeth Preparation Finishing on the Adaptation of Lithium Disilicate Crowns
title_full_unstemmed Influence of Teeth Preparation Finishing on the Adaptation of Lithium Disilicate Crowns
title_short Influence of Teeth Preparation Finishing on the Adaptation of Lithium Disilicate Crowns
title_sort influence of teeth preparation finishing on the adaptation of lithium disilicate crowns
url http://dx.doi.org/10.1155/2017/2078526
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