The effect of the different restorations on fracture resistance of root-filled premolars

Göktürk, Hakan; Karaarslan, Emine Şirin; Tekin, Elif; Holoğlu, Bilal; Sarıkaya, Işıl

doi:10.1186/s12903-018-0663-7

Cited by 27 publications

(25 citation statements)

References 33 publications

(57 reference statements)

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“…Similar to our results, Keçeci et al 24 showed that intact teeth had a high percentage of “non‐restorable” fractures. However, untreatable fractures were detected at a significantly high level with ceramic MOD inlays 38,39 . This difference would be explained by the presence in this study of a composite resin filling in the cavity chamber that could have deviated the fracture and ameliorated the prognosis 40 .…”

Section: Discussionmentioning

confidence: 61%

“…However, untreatable fractures were detected at a significantly high level with ceramic MOD inlays. 38,39 This difference would be explained by the presence in this study of a composite resin filling in the cavity chamber that could have deviated the fracture and ameliorated the prognosis. 40 According to the localization of fracture lines, inlay restorations showed mixed type of failure.…”

Section: Discussionmentioning

confidence: 83%

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Effect of Inlays, Onlays and Endocrown Cavity Design Preparation on Fracture Resistance and Fracture Mode of Endodontically Treated Teeth: An In Vitro Study

Kassis

Khoury

Zogheib

et al. 2021

Journal of Prosthodontics

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Purpose: To evaluate the fracture resistance and failure modes of endodontically treated mandibular molars restored with different designs of inlays, onlays and endocrowns. Materials and Methods: Extracted mandibular third molars (n = 180) were used. An access cavity was prepared on the occlusal surface of each tooth and the roots were obturated with gutta percha. All specimens were randomly divided into 6 groups (n = 30/group) according to the cavity design and the restoration material used. C: control group without access cavity preparation. IE: MOD inlay preparation with Ev-erX Posterior (GC Europe) in the pulp chamber. IG: MOD inlay preparation with G-aenial Universal Flo (GC America) in the pulp chamber. OE: onlay preparation with EverX Posterior (GC Europe) in the pulp chamber. OG: onlay preparation with G-aenial Universal Flo (GC America) in the pulp chamber. EC: endocrown with an empty pulp chamber. All restorations were fabricated with CAD/CAM system using CERASMART ® (GC Dental products Europe, Belgium) CAD/CAM blocks. Specimens were thermal-cycled and were subjected to a compressive load applied at 30°a ngle relative to the long axis of the tooth with a universal testing machine. Results were statistically analyzed by ANOVA followed by Tukey post hoc tests. Chi-square test and Fisher Exact tests were used for the comparisons among groups.Results: The mean fracture strength was significantly different between the groups (p < 0.001); it was significantly highest for intact teeth, followed by endocrowns (p = 0.021). The strength was significantly lower for inlays (with G-aenial Universal Flo and EverX Posterior), intermediate for onlays with EverX Posterior followed by onlays with G-aenial Universal Flo. Conclusions: Endocrowns exhibited higher fracture resistance than other tested composite resin groups. Endocrowns and onlays showed a more favorable failure mode than inlay restorations.

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Section: Discussionmentioning

confidence: 61%

Section: Discussionmentioning

confidence: 83%

Effect of Inlays, Onlays and Endocrown Cavity Design Preparation on Fracture Resistance and Fracture Mode of Endodontically Treated Teeth: An In Vitro Study

Kassis

Khoury

Zogheib

et al. 2021

Journal of Prosthodontics

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“…Compared to molars, premolars have less tooth substance and smaller pulp chambers to retain a core build-up after endodontic treatment. Moreover, the preparation of an endodontic access cavity increases the possibility of cusp fractures following the cusp deflection during function [ 69 ], which is higher for endodontically treated premolars with MOD preparations [ 70 , 71 ]. In fact, it has been observed how the loss of the marginal walls makes these teeth extremely prone to fracture [ 10 , 28 , 52 ].…”

Section: Discussionmentioning

confidence: 99%

Effect of Fiber Posts on Stress Distribution of Endodontically Treated Upper Premolars: Finite Element Analysis

et al. 2020

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By means of a finite element method (FEM), the present study evaluated the effect of fiber post (FP) placement on the stress distribution occurring in endodontically treated upper first premolars (UFPs) with mesial–occlusal–distal (MOD) nanohybrid composite restorations under subcritical static load. FEM models were created to simulate four different clinical situations involving endodontically treated UFPs with MOD cavities restored with one of the following: composite resin; composite and one FP in the palatal root; composite and one FP in the buccal root; or composite and two FPs. As control, the model of an intact UFP was included. A simulated load of 150 N was applied. Stress distribution was observed on each model surface, on the mid buccal–palatal plane, and on two horizontal planes (at cervical and root-furcation levels); the maximum Von Mises stress values were calculated. All analyses were replicated three times, using the mechanical parameters from three different nanohybrid resin composite restorative materials. In the presence of FPs, the maximum stress values recorded on dentin (in cervical and root-furcation areas) appeared slightly reduced, compared to the endodontically treated tooth restored with no post; in the same areas, the overall Von Mises maps revealed more favorable stress distributions. FPs in maxillary premolars with MOD cavities can lead to a positive redistribution of potentially dangerous stress concentrations away from the cervical and the root-furcation dentin.

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“…Thus, the null hypothesis was rejected. Previous studies discuss the importance of simulated periodontal ligament to more closely simulate clinical conditions and establish the absorption of masticatory forces by periodontal ligaments and alveolar bone in vitro (7,45). Moreover, in our knowledge, this is the first study comparing different restorative materials with the periodontal simulation method.…”

Section: Discussionmentioning

confidence: 96%

Fracture Resistance of Teeth Restored with Bulk-Fill and Fiber-Reinforced Composites in Class II Cavities

Keskin

Gündoğar

Tek

2020

Odovtos - Int J Dent Sc

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This study aimed to evaluate the fracture resistance of teeth restored with conventional, bulk-fill, and fiber-reinforced composite materials regarding intact teeth. Standard cavities were prepared on 70 sound third molar teeth. The teeth were randomly divided into six groups: intact teeth, conventional Bis-GMA based composite, fiber-reinforced composite, Bis-GMA based bulk-fill composite, ormocer based bulk-fill composite, glass containing resin-based bulk-fill composite. The data was obtained by a Universal Testing Machine and analyzed statistically. Fracture resistance of the teeth restored with conventional composite was significantly lower than the other groups (p<0.05). The teeth restored with fiber-reinforced composite showed the highest fracture resistance; however, there were no statistically significant differences between intact teeth and teeth restored with fiber-reinforced composite, Bis-GMA based bulk-fill composite, and glass containing resin-based bulk-fill composite (p>0.05). The obtained data showed that restoring teeth with bulk-fill and fiber-reinforced composites could be recommended in Class II cavities.

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The effect of the different restorations on fracture resistance of root-filled premolars

Cited by 27 publications

References 33 publications

Effect of Inlays, Onlays and Endocrown Cavity Design Preparation on Fracture Resistance and Fracture Mode of Endodontically Treated Teeth: An In Vitro Study

Effect of Inlays, Onlays and Endocrown Cavity Design Preparation on Fracture Resistance and Fracture Mode of Endodontically Treated Teeth: An In Vitro Study

Effect of Fiber Posts on Stress Distribution of Endodontically Treated Upper Premolars: Finite Element Analysis

Fracture Resistance of Teeth Restored with Bulk-Fill and Fiber-Reinforced Composites in Class II Cavities

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