Influence of post-thickness and material on the fracture strength of teeth with reduced coronal structure

Bacchi, Ataís; Santos, Mateus Bertolini Fernandes dos; Pimentel, Marcele Jardim; Caetano, Conrado Reinoldes; Sinhoreti, Mário Alexandre Coelho

doi:10.4103/0972-0707.108196

Cited by 23 publications

(19 citation statements)

References 21 publications

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“…The fracture strength in prefabricated glass‐fiber and metallic posts was similar to the cast post‐and‐cores (CPC). CPCs are traditionally made of alloys with a much higher elastic modulus than that of dentin and are responsible for withstanding high fracture loads before fracture . Moreover, CPC is made in perfect juxtaposition with the tooth structure, minimizing the cement layer thickness, which is also responsible for providing a high fracture load .…”

Section: Discussionmentioning

confidence: 99%

“…CPCs are traditionally made of alloys with a much higher elastic modulus than that of dentin and are responsible for withstanding high fracture loads before fracture. 7,[20][21][22][23][24] Moreover, CPC is made in perfect juxtaposition with the tooth structure, minimizing the cement layer thickness, which is also responsible for providing a high fracture load. 24,25 However, the placement of prefabricated posts also provides some benefits that might help explain the similarity in the fracture strength among groups.…”

Section: Discussionmentioning

confidence: 99%

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The Influence of Post System Design and Material on the Biomechanical Behavior of Teeth with Little Remaining Coronal Structure

Pinto

Bhering

Oliveira

et al. 2018

Journal of Prosthodontics

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

The Influence of Post System Design and Material on the Biomechanical Behavior of Teeth with Little Remaining Coronal Structure

Pinto

Bhering

Oliveira

et al. 2018

Journal of Prosthodontics

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“…Post length, diameter, and taper influence stress distribution within the root. [16][17][18] Different types of posts should be compared in future studies. Conventional Akers clasps were selected for this study, and the effects of different rest positions were compared.…”

Section: Discussionmentioning

confidence: 99%

Root Fracture of Abutment Teeth for Partial Removable Dental Prostheses

Mizuno¹,

Gonda²,

Takahashi³

et al. 2016

Int J Prosthodont

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Root fracture is a common and serious cause of abutment tooth loss. No studies to date have comprehensively assessed the individual contributions of the factors that increase stress on abutment teeth. The purpose of this study was to analyze the stress distribution in abutment teeth based on a three-dimensional finite element model and to analyze the factors that affect stress distribution. Materials and Methods: Models were generated from the computed tomography data of a single patient, consisting of a mandibular second premolar abutment tooth, bone, residual mucous membrane, and a partial removable dental prosthesis (PRDP). Four models were prepared using different types of endodontic posts and cores. Akers clasps were used for the simulated PRDPs, and a vertical load was applied to the occlusal surface of the PRDPs. Debonding between the post and root was simulated. The Young modulus of the residual ridge was reduced to simulate a poor fit between the denture base and the residual ridge. Stress distribution in the abutment tooth root was observed, and the maximum principal stress was evaluated. Results: The nonmetal post model and the mesial rest model reduced stress concentration in the root. The stress increased in models simulating debonding and poor fit. The results of the multiple linear regression analysis confirmed that debonding and poor fit were significantly associated with root stress. Conclusion: Within the limitations of this study, it is suggested that the bonding integrity of posts and adequate fit of the denture base are important factors affecting the longevity of abutment teeth for PRDPs.

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“…An increased post-thickness does not increase the fracture strength. Glass-fiber posts lead to less severe fractures [16].…”

Section: Discussionmentioning

confidence: 99%

Esthetic Restoration of Two Severely Decayed Maxillary Central Incisors: A Case Report

Saafi¹,

Debbabi²,

Chakroun³

et al. 2017

Journal of Oral Health and Dental Science

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Today, patients are increasingly interested in metal-free restoration. Restoration of an anterior root-filled tooth with little remaining coronal tooth tissue can use a post to retain a core enabling definitive restoration. Post material has been, until recently, primarily metal--be it cast or prefabricated. Currently, fiber-posts are promoted as being advantageous due to a favorable failure mechanism which may protect the root from fracture [1]. Endodontic posts are necessary to provide adequate retention and support when no sufficient remaining structure is available to retain the core. There are different materials and techniques to construct post-andcore, but there is no consensus about which one promotes better stress distribution on the remaining tooth structure [2]. The new ceramics used for final crowns by CAD/CAM technique associate aesthetic and good mechanical qualities, biocompatibility, and accurate marginal fit and low invasive preparation. Abstract Esthetic Restoration of Two Severely Decayed Maxillary

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Influence of post-thickness and material on the fracture strength of teeth with reduced coronal structure

Cited by 23 publications

References 21 publications

The Influence of Post System Design and Material on the Biomechanical Behavior of Teeth with Little Remaining Coronal Structure

The Influence of Post System Design and Material on the Biomechanical Behavior of Teeth with Little Remaining Coronal Structure

Root Fracture of Abutment Teeth for Partial Removable Dental Prostheses

Esthetic Restoration of Two Severely Decayed Maxillary Central Incisors: A Case Report

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