Influence of alveolar bone loss, post type, and ferrule presence on the biomechanical behavior of endodontically treated maxillary canines: Strain measurement and stress distribution

Roscoe, Marina Guimarães; Noritomi, Pedro Yoshito; Novais, Veridiana Resende; Soares, Carlos José

doi:10.1016/s0022-3913(13)60350-9

Cited by 58 publications

(51 citation statements)

References 37 publications

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“…Despite all clinical success achieved with the use of intraradicular posts, one disadvantage of this system is the additional removal of sound tissue needed for fitting the post into the root canal; additionally, this procedure was revealed to affect the overall biomechanical behavior of the restored teeth. Alternatively, other restorative approaches have been suggested, including but not limited to the well-known endocrown restorations [1][2][3].…”

Section: Introductionmentioning

confidence: 99%

Fracture Resistance of Endodontically Treated Teeth Restored with Lithium Disilicate Crowns Retained with Fiber Posts Compared to Lithium Disilicate and Cerasmart Endocrowns: In Vitro Study

Al-shibri¹,

Elguindy²

2017

Dentistry

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Purpose: The purpose of this in vitro study was to compare the effect of endocrowns and glass fiber postretained crowns on the fracture resistance of endodontically treated maxillary premolars made of different ceramics materials. Materials and Methods:Thirty sound maxillary premolars were endodontically treated. They were randomly assigned into 3 groups (n=10), in which, teeth were prepared to receive all-ceramic restorations. GP: fiber post and resin core and ferrule with all-ceramic (IPS E-max CAD, Ivoclar-Vivadent) conventional crown. GE: Endocrown with butt joint finish line design made of (IPS E-max CAD, Ivoclar-Vivadent). GC: Endocrown with butt joint finish line design made of hybrid nanoceramic (CERASMART, GC Dental, USA). The lithium disilicate (IPS E-max press, Ivoclar-Vivadent) and hybrid nanoceramic (CERASMART, GC Dental, USA) all-ceramic restorations were made by CAD/CAM system (CEREC MC XL SW 4.0) and adhesively cemented with dual-cure resin cement (BisCem Bisco, Inc, USA). Specimens were mounted in a universal testing machine (Model 3345; Instron Industrial Products, Norwood, MA, USA). Each specimen was loaded to failure at a crosshead speed of 5.0 mm / min. Mode of failure was also examined. Data were analyzed using one way analysis of variance (ANOVA) and Tukey's post hoc significance difference tests. Differences were considered significant at P<0.05. Results:One way ANOVA test showed that group (GC) recorded statistically significant (p<0.05) highest mean value (1522.64 N) followed by group (GP) (1301.34 N) then group (GE) (725.73 N). Group (GE) recorded the lowest statistically significant (p<0.05) mean value (725.73±137.89 N). Pair-wise Tukey's post-hoc test showed nonsignificant (P>0.05) difference between GP and GC groups. Conclusions:Within the limitations of this study, all fracture resistance loads obtained in this study were far beyond the maximum masticatory forces and the presence of hybrid nanoceramic increased the fracture resistance of endodontically treated maxillary premolars restored with endocrown than those restored with lithium disilicate endocrowns, in failure mode hybrid nanoceramic showed favorable fracture pattern than lithium disilicate.

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Section: Introductionmentioning

confidence: 99%

Fracture Resistance of Endodontically Treated Teeth Restored with Lithium Disilicate Crowns Retained with Fiber Posts Compared to Lithium Disilicate and Cerasmart Endocrowns: In Vitro Study

Al-shibri¹,

Elguindy²

2017

Dentistry

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“…In addition, Roscoe, et al [12] discovered that stress concentration significantly increased when bone loss reached 5 mm. The effect of different bone levels on the maximum von Mises stress in the dentin is shown in Figure 4.…”

Section: Alveolar Bone Levelmentioning

confidence: 99%

“…Periodontitis not only causes bone loss, but also increases the failure rate of endodontic treatments [12]. A linear relationship was discovered between the amount of horizontal bone loss and the magnitude of force encountered by restored teeth [13].…”

Section: Introductionmentioning

confidence: 99%

Finite element analysis to study the effects of using CAD/CAM glass-fiber post system in a severely damaged anterior tooth

Chen

Feng

Zhang

et al. 2015

BME

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Abstract.To investigate the stress distribution of a severely damaged maxillary anterior tooth restored with a computer-aided design/computer-aided manufacturing (CAD/CAM) glass-fiber post system. Twelve models were fabricated with different alveolar bone levels and cervical dentin wall thicknesses and studied using a two-dimensional finite element method. A force of 100 N was applied to the lingual surface of the crown at 45 degrees, and the maximum von Mises stress was calculated. A higher stress level was observed in the dentin than in the post and crown. With the reduction of dentin thickness, the maximum von Mises stress in the dentin increased slightly to a peak at a thickness of 1.5 mm, followed by a slight decrease at a thickness of 1.0 mm. However, the relative ratio (RR) values did not show a large difference (RR > 80%). Meanwhile, a large difference in RR values was observed with a change in bone level (RR < 80%). When using a CAD/CAM glass-fiber post system, the maximal von Mises stress was significantly affected by the bone level, rather than by the dentin thickness. Moreover, this system may be applied to the treatment of a maxillary anterior tooth with a bone level of only 2/3.

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“…This analysis is useful for evaluating the mechanical aspects of biomedical and dental materials that can be difficult to measure in vivo. Some researchers have demonstrated that, when the post-end position was below the cancellous bone level, the magnitude of maximum stress concentration in resin core build-up teeth was affected by the alveolar bone loss 19,20) , but not by the post length 8,21) . However, there has been little research on the stress distribution in tooth resin core build-ups when the post-end position is above and within the cortical bone layer.…”

Section: Introductionmentioning

confidence: 99%

Stress distribution in tooth resin core build-ups with different post-end positions in alveolar bone level under two kinds of load directions

et al. 2018

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This study aimed to evaluate influence of different post-end positions in alveolar bone level on stress distributions in resin-core build-up tooth under different load directions. Three-dimensional mathematical models of a root-filled mandibular premolar tooth were constructed. Resin post and core were built-up with six post lengths: 0, 1, 2, 3, 4, and 6 mm. Finite element analysis calculated stress distributions with oblique load of 400 N to buccal cusp 45 degree from buccal side or from lingual side. The 3 mm-post length (post-end position equal to cancellous bone level) caused highest equivalent stress of post-end compared with the shorter or longer post length. When change of load direction, the direction of maximum shear stress became completely opposite at mesiodistal cervical edge of core-part without a change of the magnitude. Changing shear stress direction would increase risk of debonding at mesiodistal cervical edge.

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Influence of alveolar bone loss, post type, and ferrule presence on the biomechanical behavior of endodontically treated maxillary canines: Strain measurement and stress distribution

Cited by 58 publications

References 37 publications

Fracture Resistance of Endodontically Treated Teeth Restored with Lithium Disilicate Crowns Retained with Fiber Posts Compared to Lithium Disilicate and Cerasmart Endocrowns: In Vitro Study

Fracture Resistance of Endodontically Treated Teeth Restored with Lithium Disilicate Crowns Retained with Fiber Posts Compared to Lithium Disilicate and Cerasmart Endocrowns: In Vitro Study

Finite element analysis to study the effects of using CAD/CAM glass-fiber post system in a severely damaged anterior tooth

Stress distribution in tooth resin core build-ups with different post-end positions in alveolar bone level under two kinds of load directions

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