The Effect of Marginal Preparation Type on an All-Ceramic Anterior Crown: A Finite Element Study
Objectives: The aim of the study was to evaluate and compared the effects of 2 different tooth preparation designs on the stress distribution in tooth, cement, core and two ceramic layers of all ceramic anterior crown using the 3 Dimensional (3D) Finite-Element-Analysis (FEA) method. Anterior tooth-...
| Main Author: | |
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| Format: | Article |
| Language: | English |
| Published: |
Cumhuriyet University
2017-03-01
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| Series: | Cumhuriyet Dental Journal |
| Subjects: | |
| Online Access: | https://dergipark.org.tr/tr/download/article-file/284795 |
| _version_ | 1797704536173838336 |
|---|---|
| author | Ayşe Gözde Türk |
| author_facet | Ayşe Gözde Türk |
| author_sort | Ayşe Gözde Türk |
| collection | DOAJ |
| description | Objectives: The aim of the study was to evaluate and
compared the effects of 2 different tooth preparation designs on the stress
distribution in tooth, cement, core and two ceramic layers of all ceramic
anterior crown using the 3 Dimensional (3D) Finite-Element-Analysis (FEA) method.
Anterior tooth-crown configuration composed of both layers of restoration is
lacking.Materials and Methods: 1
mm circumferential shoulder and chamfer finish line
preparations were performed with rounded shoulder and chamfer diamond
cylindrical burs with rounded angles on 2 maxillary central teeth. 1 mm
thickness of the frameworks were (IPS e.max Press, Ivoclar-Vivadent, Schaan,
Liechtenstein) prepared by pressing technique. After scanning the frameworks
for FEA, dentin and enamel ceramics (IPS e.max Ceram, Ivoclar-Vivadent) were
applied. Each ceramic layer was scanned for finite-element models. The
Variolink II (Ivoclar-Vivadent) was used as a luting material and modeled. A
200 N static load was applied at 45° to the palatal surface. 3D-FEA was performed
with I-DEAS software.Results: Rounded-shoulder
model showed higher Von Mises stress values in prepared tooth, core, resin
cement, and both two layers of the ceramic than chamfer model. Rounded-shoulder
preparation type within all evaluated models had more dispersed stress
distribution localization areas than chamfer preparation type’s models. The
highest Von-Mises stress values were found within the first ceramic layer of
the shoulder model (26.5 MPa) on 1/3 of the buccal surface. Low stress values
were found at dentin tooth structures for both chamfer and rounded-shoulder
models.
Conclusions: Rounded-shoulder
preparation type showed higher Von-Mises stress values at both layers of crown.
Minimum Von-Mises stress values were found at dentin regardless of the
preparation type.Objectives: The aim of the study was to evaluate and
compared the effects of 2 different tooth preparation designs on the stress
distribution in tooth, cement, core and two ceramic layers of all ceramic
anterior crown using the 3 Dimensional (3D) Finite-Element-Analysis (FEA) method.
Anterior tooth-crown configuration composed of both layers of restoration is
lacking. |
| first_indexed | 2024-03-12T05:21:51Z |
| format | Article |
| id | doaj.art-8a1122960abb4372b1ff314962be0179 |
| institution | Directory Open Access Journal |
| issn | 1302-5805 2146-2852 |
| language | English |
| last_indexed | 2024-03-12T05:21:51Z |
| publishDate | 2017-03-01 |
| publisher | Cumhuriyet University |
| record_format | Article |
| series | Cumhuriyet Dental Journal |
| spelling | doaj.art-8a1122960abb4372b1ff314962be01792023-09-03T07:37:27ZengCumhuriyet UniversityCumhuriyet Dental Journal1302-58052146-28522017-03-0119321422110.7126/cumudj.2988922057The Effect of Marginal Preparation Type on an All-Ceramic Anterior Crown: A Finite Element StudyAyşe Gözde TürkObjectives: The aim of the study was to evaluate and compared the effects of 2 different tooth preparation designs on the stress distribution in tooth, cement, core and two ceramic layers of all ceramic anterior crown using the 3 Dimensional (3D) Finite-Element-Analysis (FEA) method. Anterior tooth-crown configuration composed of both layers of restoration is lacking.Materials and Methods: 1 mm circumferential shoulder and chamfer finish line preparations were performed with rounded shoulder and chamfer diamond cylindrical burs with rounded angles on 2 maxillary central teeth. 1 mm thickness of the frameworks were (IPS e.max Press, Ivoclar-Vivadent, Schaan, Liechtenstein) prepared by pressing technique. After scanning the frameworks for FEA, dentin and enamel ceramics (IPS e.max Ceram, Ivoclar-Vivadent) were applied. Each ceramic layer was scanned for finite-element models. The Variolink II (Ivoclar-Vivadent) was used as a luting material and modeled. A 200 N static load was applied at 45° to the palatal surface. 3D-FEA was performed with I-DEAS software.Results: Rounded-shoulder model showed higher Von Mises stress values in prepared tooth, core, resin cement, and both two layers of the ceramic than chamfer model. Rounded-shoulder preparation type within all evaluated models had more dispersed stress distribution localization areas than chamfer preparation type’s models. The highest Von-Mises stress values were found within the first ceramic layer of the shoulder model (26.5 MPa) on 1/3 of the buccal surface. Low stress values were found at dentin tooth structures for both chamfer and rounded-shoulder models. Conclusions: Rounded-shoulder preparation type showed higher Von-Mises stress values at both layers of crown. Minimum Von-Mises stress values were found at dentin regardless of the preparation type.Objectives: The aim of the study was to evaluate and compared the effects of 2 different tooth preparation designs on the stress distribution in tooth, cement, core and two ceramic layers of all ceramic anterior crown using the 3 Dimensional (3D) Finite-Element-Analysis (FEA) method. Anterior tooth-crown configuration composed of both layers of restoration is lacking.https://dergipark.org.tr/tr/download/article-file/284795all-ceramicfinite elemet analysispreparationcrown |
| spellingShingle | Ayşe Gözde Türk The Effect of Marginal Preparation Type on an All-Ceramic Anterior Crown: A Finite Element Study Cumhuriyet Dental Journal all-ceramic finite elemet analysis preparation crown |
| title | The Effect of Marginal Preparation Type on an All-Ceramic Anterior Crown: A Finite Element Study |
| title_full | The Effect of Marginal Preparation Type on an All-Ceramic Anterior Crown: A Finite Element Study |
| title_fullStr | The Effect of Marginal Preparation Type on an All-Ceramic Anterior Crown: A Finite Element Study |
| title_full_unstemmed | The Effect of Marginal Preparation Type on an All-Ceramic Anterior Crown: A Finite Element Study |
| title_short | The Effect of Marginal Preparation Type on an All-Ceramic Anterior Crown: A Finite Element Study |
| title_sort | effect of marginal preparation type on an all ceramic anterior crown a finite element study |
| topic | all-ceramic finite elemet analysis preparation crown |
| url | https://dergipark.org.tr/tr/download/article-file/284795 |
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