Effect of Margin Designs on the Marginal Adaptation of Zirconia Copings
Objective: The aim of this in vitro study was to investigate the effect of Shoulder versus Chamfer margin design on the marginal adaptation of zirconia (Zr) copings. Materials and Methods: 40 extracted molar teeth were mounted in resin and prepared for zirconia crowns with two margin preparation des...
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University of Zagreb. School of Dental Medicine
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doaj-712eb38e6ada444a874d5b32982bdda42020-11-24T23:20:53ZengUniversity of Zagreb. School of Dental MedicineActa Stomatologica Croatica0001-70191846-04102017-01-01513179187Effect of Margin Designs on the Marginal Adaptation of Zirconia CopingsSyed Rashid Habib0Mohammed Ginan Al Ajmi1Mohammed Al Dhafyan2Abdulrehman Jomah3Haytham Abualsaud4Mazen Almashali5College of Dentistry, King Saud University, Saudi ArabiaCollege of Dentistry, King Saud University, Saudi ArabiaCollege of Dentistry, King Saud University, Saudi ArabiaCollege of Dentistry, King Saud University, Saudi ArabiaCollege of Dentistry, King Saud University, Saudi ArabiaSecurity Forces Hospital, Riyadh, Saudi ArabiaObjective: The aim of this in vitro study was to investigate the effect of Shoulder versus Chamfer margin design on the marginal adaptation of zirconia (Zr) copings. Materials and Methods: 40 extracted molar teeth were mounted in resin and prepared for zirconia crowns with two margin preparation designs (20=Shoulder and 20=Chamfer). The copings were manufactured by Cercon® (DeguDent GmbH, Germany) using the CAD/CAM system for each tooth. They were tried on each tooth, cemented, thermocycled, re-embedded in resin and were subsequently cross sectioned centrally into two equal mesial and distal halves. They were examined under electron microscope at 200 X magnification and the measurements were recorded at 5 predetermined points in micrometers (µm). Results: The overall mean marginal gap for the two groups was found to be 206.98+42.78µm with Shoulder margin design (Marginal Gap=199.50+40.72µm) having better adaptation compared to Chamfer (Marginal Gap=214.46+44.85µm). The independent-samples t-test showed a statistically non-significant difference (p=.113) between the means of marginal gap for Shoulder and Chamfer margin designs and the measurements were recorded at 5 predetermined points for the two groups. Conclusions: The Chamfer margin design appeared to offer the same adaptation results as the Shoulder margin design.http://hrcak.srce.hr/file/275390Dental Crown MarginDental Marginal AdaptationCAD/CAM |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Syed Rashid Habib Mohammed Ginan Al Ajmi Mohammed Al Dhafyan Abdulrehman Jomah Haytham Abualsaud Mazen Almashali |
spellingShingle |
Syed Rashid Habib Mohammed Ginan Al Ajmi Mohammed Al Dhafyan Abdulrehman Jomah Haytham Abualsaud Mazen Almashali Effect of Margin Designs on the Marginal Adaptation of Zirconia Copings Acta Stomatologica Croatica Dental Crown Margin Dental Marginal Adaptation CAD/CAM |
author_facet |
Syed Rashid Habib Mohammed Ginan Al Ajmi Mohammed Al Dhafyan Abdulrehman Jomah Haytham Abualsaud Mazen Almashali |
author_sort |
Syed Rashid Habib |
title |
Effect of Margin Designs on the Marginal Adaptation of Zirconia Copings |
title_short |
Effect of Margin Designs on the Marginal Adaptation of Zirconia Copings |
title_full |
Effect of Margin Designs on the Marginal Adaptation of Zirconia Copings |
title_fullStr |
Effect of Margin Designs on the Marginal Adaptation of Zirconia Copings |
title_full_unstemmed |
Effect of Margin Designs on the Marginal Adaptation of Zirconia Copings |
title_sort |
effect of margin designs on the marginal adaptation of zirconia copings |
publisher |
University of Zagreb. School of Dental Medicine |
series |
Acta Stomatologica Croatica |
issn |
0001-7019 1846-0410 |
publishDate |
2017-01-01 |
description |
Objective: The aim of this in vitro study was to investigate the effect of Shoulder versus Chamfer margin design on the marginal adaptation of zirconia (Zr) copings. Materials and Methods: 40 extracted molar teeth were mounted in resin and prepared for zirconia crowns with two margin preparation designs (20=Shoulder and 20=Chamfer). The copings were manufactured by Cercon® (DeguDent GmbH, Germany) using the CAD/CAM system for each tooth. They were tried on each tooth, cemented, thermocycled, re-embedded in resin and were subsequently cross sectioned centrally into two equal mesial and distal halves. They were examined under electron microscope at 200 X magnification and the measurements were recorded at 5 predetermined points in micrometers (µm). Results: The overall mean marginal gap for the two groups was found to be 206.98+42.78µm with Shoulder margin design (Marginal Gap=199.50+40.72µm) having better adaptation compared to Chamfer (Marginal Gap=214.46+44.85µm). The independent-samples t-test showed a statistically non-significant difference (p=.113) between the means of marginal gap for Shoulder and Chamfer margin designs and the measurements were recorded at 5 predetermined points for the two groups. Conclusions: The Chamfer margin design appeared to offer the same adaptation results as the Shoulder margin design. |
topic |
Dental Crown Margin Dental Marginal Adaptation CAD/CAM |
url |
http://hrcak.srce.hr/file/275390 |
work_keys_str_mv |
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