Analysis of stresses during the polymerization shrinkage of self-curing resin cement in indirect restorations: A finite-element study
Background: Adhesive cementation is essential for the longevity of indirect esthetic restorations. However, polymerization shrinkage of resin cement generates stress, which may cause failures in the tooth-restoration interface. So, understanding of the biomechanics of resin cement is important for p...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Wolters Kluwer Medknow Publications
2014-01-01
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| Series: | Indian Journal of Dental Research |
| Subjects: | |
| Online Access: | http://www.ijdr.in/article.asp?issn=0970-9290;year=2014;volume=25;issue=6;spage=755;epage=757;aulast=Cornacchia |
| _version_ | 1818608910476509184 |
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| author | Tulimar M Cornacchia Guilherme C Silva Claudia S Magalhaes Allyson N Moreira Estevam B Las Casas |
| author_facet | Tulimar M Cornacchia Guilherme C Silva Claudia S Magalhaes Allyson N Moreira Estevam B Las Casas |
| author_sort | Tulimar M Cornacchia |
| collection | DOAJ |
| description | Background: Adhesive cementation is essential for the longevity of indirect esthetic restorations. However, polymerization shrinkage of resin cement generates stress, which may cause failures in the tooth-restoration interface. So, understanding of the biomechanics of resin cement is important for predicting the clinical behavior of an esthetic indirect restoration.
Aims: To analyze the stresses generated during polymerization shrinkage of self-curing resin cement in ceramic and in indirect resin (IR) restorations, using the finite-element method (FEM).
Settings and Design: Numerical study using the finite-element analysis.
Materials and Methods: A three-dimensional (3D) model of a second molar restored with ceramic or IR onlay restoration was designed. The polymerization shrinkage of self-curing resin cement was simulated in FEM software using an analogy between the thermal stress and the resulting contraction of the resin cement. The localization and values of tensile stresses in the dental structure, cement, and adhesive layer were identified.
Results: The location and value of the tensile stresses were similar for the two restorative materials. High tensile stresses were identified in the axiopulpal wall and angles of the tooth preparation, with the major stresses found in the cement located in the axiopulpal wall.
Conclusions: The high stresses values and their concentration in the angles of the prepared tooth emphasize the importance of round angles and the use of cements with lower rates of shrinkage. |
| first_indexed | 2024-12-16T14:50:09Z |
| format | Article |
| id | doaj.art-ce6a0c1f75c944128ed9f5ed3469da8d |
| institution | Directory Open Access Journal |
| issn | 0970-9290 1998-3603 |
| language | English |
| last_indexed | 2024-12-16T14:50:09Z |
| publishDate | 2014-01-01 |
| publisher | Wolters Kluwer Medknow Publications |
| record_format | Article |
| series | Indian Journal of Dental Research |
| spelling | doaj.art-ce6a0c1f75c944128ed9f5ed3469da8d2022-12-21T22:27:37ZengWolters Kluwer Medknow PublicationsIndian Journal of Dental Research0970-92901998-36032014-01-0125675575710.4103/0970-9290.152192Analysis of stresses during the polymerization shrinkage of self-curing resin cement in indirect restorations: A finite-element studyTulimar M CornacchiaGuilherme C SilvaClaudia S MagalhaesAllyson N MoreiraEstevam B Las CasasBackground: Adhesive cementation is essential for the longevity of indirect esthetic restorations. However, polymerization shrinkage of resin cement generates stress, which may cause failures in the tooth-restoration interface. So, understanding of the biomechanics of resin cement is important for predicting the clinical behavior of an esthetic indirect restoration. Aims: To analyze the stresses generated during polymerization shrinkage of self-curing resin cement in ceramic and in indirect resin (IR) restorations, using the finite-element method (FEM). Settings and Design: Numerical study using the finite-element analysis. Materials and Methods: A three-dimensional (3D) model of a second molar restored with ceramic or IR onlay restoration was designed. The polymerization shrinkage of self-curing resin cement was simulated in FEM software using an analogy between the thermal stress and the resulting contraction of the resin cement. The localization and values of tensile stresses in the dental structure, cement, and adhesive layer were identified. Results: The location and value of the tensile stresses were similar for the two restorative materials. High tensile stresses were identified in the axiopulpal wall and angles of the tooth preparation, with the major stresses found in the cement located in the axiopulpal wall. Conclusions: The high stresses values and their concentration in the angles of the prepared tooth emphasize the importance of round angles and the use of cements with lower rates of shrinkage.http://www.ijdr.in/article.asp?issn=0970-9290;year=2014;volume=25;issue=6;spage=755;epage=757;aulast=CornacchiaAdhesionbiomechanicsdental cementfinite-element methodpolymerization shrinkage |
| spellingShingle | Tulimar M Cornacchia Guilherme C Silva Claudia S Magalhaes Allyson N Moreira Estevam B Las Casas Analysis of stresses during the polymerization shrinkage of self-curing resin cement in indirect restorations: A finite-element study Indian Journal of Dental Research Adhesion biomechanics dental cement finite-element method polymerization shrinkage |
| title | Analysis of stresses during the polymerization shrinkage of self-curing resin cement in indirect restorations: A finite-element study |
| title_full | Analysis of stresses during the polymerization shrinkage of self-curing resin cement in indirect restorations: A finite-element study |
| title_fullStr | Analysis of stresses during the polymerization shrinkage of self-curing resin cement in indirect restorations: A finite-element study |
| title_full_unstemmed | Analysis of stresses during the polymerization shrinkage of self-curing resin cement in indirect restorations: A finite-element study |
| title_short | Analysis of stresses during the polymerization shrinkage of self-curing resin cement in indirect restorations: A finite-element study |
| title_sort | analysis of stresses during the polymerization shrinkage of self curing resin cement in indirect restorations a finite element study |
| topic | Adhesion biomechanics dental cement finite-element method polymerization shrinkage |
| url | http://www.ijdr.in/article.asp?issn=0970-9290;year=2014;volume=25;issue=6;spage=755;epage=757;aulast=Cornacchia |
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