Evaluating effect of ferrule height, configuration, and post and core approaches on stress distribution of flared root canal: A three-dimensional finite element analysis

Gupta, Nitin Kumar; Taneja, Sonali; Bhalla, Vidhi Kiran

doi:10.4103/sej.sej_292_20

Cited by 3 publications

(3 citation statements)

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“…As the number of intact walls decreased, the incoming loads increased rapidly. This result is consistent with the work of Gupta et al [26].…”

Section: Discussionsupporting

confidence: 94%

“…This study demonstrated the effect of residual coronal structure on fatigue performance in the rehabilitation of maxillary central incisors following endodontic treatment. These data are supported by other studies [8,[24][25][26] and confirm the favorable effect of the ferrule effect on mechanical strength and prognosis. The existence of the ferrule effect is expected to increase resistance to lever loads and positively affect the structure by distributing stresses more uniformly [27].…”

Section: Discussionsupporting

confidence: 89%

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The Effect of Different Ferrule Configurations and Preparation Designs on the Fatigue Performance of Endodontically Treated Maxillary Central Incisors: A 3D Finite Element Analysis

Demirel,

Mohammadi

2024

Applied Sciences

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The presence of an adequate circumferential ferrule is of great importance for the prosthetic rehabilitation of endodontically treated teeth. However, there may not be an adequate circumferential ferrule effect. This study aimed to evaluate the fatigue performance of endocrown and post–core restorations applied to different configurations without an adequate ferrule effect using the finite element method and endeavors to offer a comprehensive perspective on the challenging rehabilitation of maxillary incisors with excessive coronal substance loss, addressing a notable gap in research and providing valuable insights for clinicians. The goal is to address this gap in research and contribute valuable insights that could be beneficial for practitioners. The maxillary central incisor was selected, and lithium disilicate (LS) and a polymer-infiltrated ceramic network (PICN) were used in post–core groups with no ferrule effect (PC0); a 2 mm ferrule effect on the buccal wall (PC1); a 2 mm ferrule effect on the buccal-mesial wall (PC2); a 2 mm ferrule effect on the buccal–mesial–palatal wall (PC3); and a 2 mm circumferential ferrule effect (PC4) In the endocrown groups, an external retention group with a circumferential ferrule (ECER) and an inner retention form group (ECIR) were prepared. Fatigue performance was examined by applying a 150 N oblique load. The evaluation of the fatigue performance of the restorative materials shows that LS always had more successful fatigue performance results, while the post–core groups were generally more successful in terms of dentin survival. In situations where there is insufficient circumferential ferrule, the application of endocrowns is likely to result in a less successful prognosis for survival.

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“…As the number of intact walls decreased, the incoming loads increased rapidly. This result is consistent with the work of Gupta et al [26].…”

Section: Discussionsupporting

confidence: 94%

Section: Discussionsupporting

confidence: 89%

The Effect of Different Ferrule Configurations and Preparation Designs on the Fatigue Performance of Endodontically Treated Maxillary Central Incisors: A 3D Finite Element Analysis

Demirel,

Mohammadi

2024

Applied Sciences

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“…In teeth with lower fracture resistance, the fracture line was closer to the cervical part of the root and CEJ [ 26 ]. Stress analysis of ETT with ferrule has revealed reduced stress levels at the cervical region in some studies [ 45 , 46 ] which coroborates the obtained results of this study. Although others reported the shift of Von mises stress from the midroot and apex to the cervical region [ 14 , 47 ].…”

Section: Discussionsupporting

confidence: 90%

Effect of Ferrule Location on Fracture Resistance of Maxillary Premolars: An In Vitro Study

Koosha,

Jebelizadeh,

Mostafavi

2023

International Journal of Dentistry

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Objectives. The present study aimed to assess the effect of ferrule location on fracture resistance of maxillary premolars. Materials and Methods. A total of 72 extracted human maxillary premolars were selected and randomly assigned to six groups (n = 12 in each) considering ferrule location: circumferential ferrule (CF), without ferrule (WF), buccal ferrule (BF), lingual ferrule (LF), mesial ferrule (MF), and buccal–lingual ferrule (BLF). Cast posts were cemented into the prepared post spaces. Following conventional impression, Ni–Cr crowns were cemented to the specimens. After thermocycling (5,000 cycles, 5–55°C), the specimens were loaded at 45° in a universal testing machine until fracture. Data were analyzed with one-way ANOVA, Kolmogorov–Smirnov, and Tamhane tests. Results. The maximum and minimum mean fracture resistance were related to the CF (1,143.84 N) and WF (514.89 N) groups, respectively, ( P = 0.039 ). Fracture resistance in the BF (933.67 N) and BLF (874.01 N) groups was significantly higher than in the MF group (617.54 N) ( P = 0.001 ). There was no significant difference between the MF, LF (722.89 N), and WF groups in terms of fracture resistance ( P > 0.05 ). Conclusion. Teeth with CF showed maximum fracture resistance. The location of the ferrule effects on the fracture resistance of maxillary premolars and also the mode of failure.

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Effect of partial ferrule on fracture resistance of endodontically treated teeth: A meta-analysis of <i>in-vitro</i> studies

et al. 2023

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Despite being challenging, the restoration of severely damaged nonvital teeth can be the first treatment option for many practicing dentists. This is because of the various potential functional, psychological, and financial merits of retaining/restoring a tooth versus tooth extraction and prosthetic replacement [1]. Commonly, restoration of endodontically treated teeth (ETT) involves posts and cores and crown restorations of varying designs, materials, and cements/ luting agents [2]. However, when a decision is made to restore an ETT, the long-term prognosis of the contemplated restoration is of paramount importance [3]. In this respect, many factors may play a role in improving the survival and fracture resistance of the restored ETT; these include volume and integrity of the remaining tooth structure, anatomy/morphology of the root canal, position of the tooth in the dental arch, presence of proximal contacts, nature of occlusion, core material, restoration design, ferrule effect, and number of remaining walls [4,5]. Among the former factors, the ferrule effect and number of remaining walls seem to be particularly important [6]. A ferrule effect was introduced by Eissman and Radke [7] to describe the 360-degree ring of cast metal and recommended the extension of the definitive cast restoration at least 2 mm apical to the junction of J Prosthodont Res. 2023; **(**): ****-****

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Evaluating effect of ferrule height, configuration, and post and core approaches on stress distribution of flared root canal: A three-dimensional finite element analysis

Cited by 3 publications

References 0 publications

The Effect of Different Ferrule Configurations and Preparation Designs on the Fatigue Performance of Endodontically Treated Maxillary Central Incisors: A 3D Finite Element Analysis

The Effect of Different Ferrule Configurations and Preparation Designs on the Fatigue Performance of Endodontically Treated Maxillary Central Incisors: A 3D Finite Element Analysis

Effect of Ferrule Location on Fracture Resistance of Maxillary Premolars: An In Vitro Study

Effect of partial ferrule on fracture resistance of endodontically treated teeth: A meta-analysis of <i>in-vitro</i> studies

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