Evaluation of the Marginal Fit of Full Contoured Zirconia, Lithium Disilicate and Metal Crowns Fabricated Using CAD-CAM: An in Vitro Study

Introduction: The marginal fit of any dental restoration is vital to its long-term success. Lack of adequate fit is potentially detrimental to both the tooth and the supporting periodontal tissues. The purpose of this study was to evaluate the marginal fit of monolithic zirconia, monolithic lithium...

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Main Authors: Savitha Dandekeri, Fowzaan Feroz, Sanath K. Shetty, Mohammed Zahid, Uma Prabhu, Ragher Mallikarjuna
Format: Article
Language:English
Published: Wolters Kluwer Medknow Publications 2023-04-01
Series:Indian Journal of Dental Research
Subjects:
Online Access:https://journals.lww.com/10.4103/ijdr.ijdr_706_21
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author Savitha Dandekeri
Fowzaan Feroz
Sanath K. Shetty
Mohammed Zahid
Uma Prabhu
Ragher Mallikarjuna
author_facet Savitha Dandekeri
Fowzaan Feroz
Sanath K. Shetty
Mohammed Zahid
Uma Prabhu
Ragher Mallikarjuna
author_sort Savitha Dandekeri
collection DOAJ
description Introduction: The marginal fit of any dental restoration is vital to its long-term success. Lack of adequate fit is potentially detrimental to both the tooth and the supporting periodontal tissues. The purpose of this study was to evaluate the marginal fit of monolithic zirconia, monolithic lithium disilicate and monolithic metal crowns and compare the three groups. Methods: The study was conducted by fabricating ten samples for each group, total of 30 samples. A premolar stainless steel die was used to standardize the preparation. PVS putty material was used to make impressions of the model and was poured using type IV die stone. The samples were all fabricated using CAD-CAM. The marginal gap was measured by SEM, and the results were analysed using SPSS software. Results: The mean marginal gap of zirconia, metal and lithium disilicate crowns was 79.49 μm, 46.83 μm and 70.79 μm, respectively. Discussion: The metal group showed the lowest marginal gap among the groups. This difference in marginal fit is due to the sintering process where the organic binders in soft metal burn out and the metallic powder particles are being sintered (caked) without creating a fused phase. Clinical Significance: Marginal fit plays a very important role in the long-term success of a crown. Discrepancy in marginal fit results in food and plaque accumulation causing caries and periodontal breakdown, eventuating the failure of the restoration. A perfect marginal fit would enhance the longevity of any indirect restoration. Knowledge about which indirect restoration has the best marginal fit is critical.
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spelling doaj-art-f6b27a2a575d425b875b55950ae0845d2025-02-09T09:41:39ZengWolters Kluwer Medknow PublicationsIndian Journal of Dental Research0970-92901998-36032023-04-0134219920310.4103/ijdr.ijdr_706_21Evaluation of the Marginal Fit of Full Contoured Zirconia, Lithium Disilicate and Metal Crowns Fabricated Using CAD-CAM: An in Vitro StudySavitha DandekeriFowzaan FerozSanath K. ShettyMohammed ZahidUma PrabhuRagher MallikarjunaIntroduction: The marginal fit of any dental restoration is vital to its long-term success. Lack of adequate fit is potentially detrimental to both the tooth and the supporting periodontal tissues. The purpose of this study was to evaluate the marginal fit of monolithic zirconia, monolithic lithium disilicate and monolithic metal crowns and compare the three groups. Methods: The study was conducted by fabricating ten samples for each group, total of 30 samples. A premolar stainless steel die was used to standardize the preparation. PVS putty material was used to make impressions of the model and was poured using type IV die stone. The samples were all fabricated using CAD-CAM. The marginal gap was measured by SEM, and the results were analysed using SPSS software. Results: The mean marginal gap of zirconia, metal and lithium disilicate crowns was 79.49 μm, 46.83 μm and 70.79 μm, respectively. Discussion: The metal group showed the lowest marginal gap among the groups. This difference in marginal fit is due to the sintering process where the organic binders in soft metal burn out and the metallic powder particles are being sintered (caked) without creating a fused phase. Clinical Significance: Marginal fit plays a very important role in the long-term success of a crown. Discrepancy in marginal fit results in food and plaque accumulation causing caries and periodontal breakdown, eventuating the failure of the restoration. A perfect marginal fit would enhance the longevity of any indirect restoration. Knowledge about which indirect restoration has the best marginal fit is critical.https://journals.lww.com/10.4103/ijdr.ijdr_706_21cad-camlithium disilicatemarginal fitmonolithiczirconia
spellingShingle Savitha Dandekeri
Fowzaan Feroz
Sanath K. Shetty
Mohammed Zahid
Uma Prabhu
Ragher Mallikarjuna
Evaluation of the Marginal Fit of Full Contoured Zirconia, Lithium Disilicate and Metal Crowns Fabricated Using CAD-CAM: An in Vitro Study
Indian Journal of Dental Research
cad-cam
lithium disilicate
marginal fit
monolithic
zirconia
title Evaluation of the Marginal Fit of Full Contoured Zirconia, Lithium Disilicate and Metal Crowns Fabricated Using CAD-CAM: An in Vitro Study
title_full Evaluation of the Marginal Fit of Full Contoured Zirconia, Lithium Disilicate and Metal Crowns Fabricated Using CAD-CAM: An in Vitro Study
title_fullStr Evaluation of the Marginal Fit of Full Contoured Zirconia, Lithium Disilicate and Metal Crowns Fabricated Using CAD-CAM: An in Vitro Study
title_full_unstemmed Evaluation of the Marginal Fit of Full Contoured Zirconia, Lithium Disilicate and Metal Crowns Fabricated Using CAD-CAM: An in Vitro Study
title_short Evaluation of the Marginal Fit of Full Contoured Zirconia, Lithium Disilicate and Metal Crowns Fabricated Using CAD-CAM: An in Vitro Study
title_sort evaluation of the marginal fit of full contoured zirconia lithium disilicate and metal crowns fabricated using cad cam an in vitro study
topic cad-cam
lithium disilicate
marginal fit
monolithic
zirconia
url https://journals.lww.com/10.4103/ijdr.ijdr_706_21
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