Elastic Properties of Lithium Disilicate Versus Feldspathic Inlays: Effect on the Bonding by 3D Finite Element Analysis

Trindade, Flávia Zardo; Valandro, Luiz Felipe; Jager, Niek de; Bottino, Marco Antônio; Kleverlaan, Cornelis J.

doi:10.1111/jopr.12550

Cited by 37 publications

(16 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…19 The results suggest that lithium disilicate is more reliable than feldspathic ceramics, because the difference between the tensile stress of these materials was significant (< 10%), yet close enough to predict that the critical stress of feldspathic will occur earlier, as force is applied. This suggests that, under the same conditions, a feldspathic ceramic crown would fail earlier than a crown in LD, as the feldspathic ceramic has a lower tensile strength value 30 than LD. Lithium disilicate has lower glass content (30-40% by volume) than feldspathic ceramic (more than 65% by volume) presenting a high degree of crosslinking, which prevents crack growth.…”

Section: Discussionmentioning

confidence: 96%

Influence of ceramic material, thickness of restoration and cement layer on stress distribution of occlusal veneers

2018

View full text Add to dashboard Cite

Section: Discussionmentioning

confidence: 96%

Influence of ceramic material, thickness of restoration and cement layer on stress distribution of occlusal veneers

2018

View full text Add to dashboard Cite

“…The total number of nodal points was 91,088, while the total number of nodal elements was 52,507. The characteristics of all materials in the models are shown in Table 1 [13]- [18]. Under the constraint condition, the post and core were adhered to the crown; they were in contact with dentin, but did not adhere to it.…”

Section: Methodsmentioning

confidence: 99%

Stress Distribution in Maxillary Central Incisors without Ferrules: A Finite Element Analysis of Post and Core Systems

Tagahara¹,

Masaki²,

Nodai³

et al. 2021

OJST

View full text Add to dashboard Cite

Purpose: The purpose of this study was to identify optimal post and core materials for central incisors without ferrules using three-dimensional finite element analysis and three-point bending tests. Methods: Stress analyses were performed with six models: cast metal post and core (MP), composite resin core alone, straight fiber-reinforced post-composite resin core (FSR), tapered fiber-reinforced post-composite resin core, straight titanium postcomposite resin core (TSR), and tapered titanium post-composite resin core (TTR). A 100-N load was applied to the lingual surface at a 45˚ angle to the long axis of the tooth. Maximum von Mises stress distributions were calculated with finite element analysis software. Five samples each of composite resin, straight fiber-reinforced post, straight titanium post, straight fiberreinforced post and composite resin, and straight titanium post and composite resin were subjected to three-point bending tests, followed by analysis of variance and Tukey's multiple comparison test. Results: Stress distribution was optimal on TTR. Maximum von Mises stress on the cervical side of the post was greatest in TSR (693 MPa) and TTR (556 MPa). Maximum stress on the apical side of the post was greatest in MP (110 MPa). Maximum stress in surrounding dentin was lowest in MP (203 MPa) and TTR (250 MPa). Gap distance was smallest in MP (0.09 mm) and largest in FSR (0.26 mm). Mean maximum three-point bending force was lowest in composite resin (26.9 N/mm) and highest in titanium post and composite resin (97.1 N/mm). Titanium post bending strength was consistently greater than that of the fiber-reinforced post (p < 0.01). Conclusion: These results revealed optimal stress distribution and high bending strength with the tapered titanium post and resin combination, suggesting that this combination can most effectively prevent root or post fracture in an anterior tooth without a ferrule.

show abstract

“…The simulations were conducted on ANSYS 2019 (ANSYS Inc., Canonsburg, PA, USA) separately for each functional model. For static structural analysis, the following simulation parameters were set: materials corresponding to each structure; contacts between components; loading and fixing conditions; discretization of the structure, and the type of results [ 21 , 22 , 23 , 24 , 25 ].…”

Section: Methodsmentioning

confidence: 99%

Adhesive-Ceramic Interface Behavior in Dental Restorations. FEM Study and SEM Investigation

et al. 2021

View full text Add to dashboard Cite

The purpose of this study is to identify the stress levels that act in inlay and onlay restorations, according to the direction and value of the external force applied. The study was conducted using the Finite Element Method (FEM) of three types of ceramics: pressed lithium disilicate and monolith, zirconia, and three different adhesive systems: self-adhesive, universal, and dual-cure cements. In addition to FEM, the inlay/onlay-dental structure interface analysis was performed by means of Scanning Electron Microscopy (SEM). The geometric models were reconstructed based on computer tomography images of an undamaged molar followed by geometrical procedures of inducing the inlay and onlay reconstructions. The two functional models were then simulated for different orientations of external force and different material properties, according to the considered adhesives and ceramics. The Scanning Electron Microscopy (SEM) was conducted on 30 extracted teeth, divided into three groups according to the adhesive cement type. Both FEM simulation and SEM investigations reveal very good mechanical behavior of the adhesive-dental structure and adhesive-ceramic interfaces for inlay and onlay reconstructions. All results lead to the conclusion that a physiological mastication force applied, regardless of direction, cannot produce a mechanical failure of either inlay or onlay reconstructions. The adhesive bond between the restorations and the dental structure can stabilize the ceramic restorations, resulting in a higher strength to the action of external forces.

show abstract

Elastic Properties of Lithium Disilicate Versus Feldspathic Inlays: Effect on the Bonding by 3D Finite Element Analysis

Cited by 37 publications

References 23 publications

Influence of ceramic material, thickness of restoration and cement layer on stress distribution of occlusal veneers

Influence of ceramic material, thickness of restoration and cement layer on stress distribution of occlusal veneers

Stress Distribution in Maxillary Central Incisors without Ferrules: A Finite Element Analysis of Post and Core Systems

Adhesive-Ceramic Interface Behavior in Dental Restorations. FEM Study and SEM Investigation

Contact Info

Product

Resources

About