Effect of Post Placement on the Restoration of Endodontically Treated Teeth: A Systematic Review

Zhu, Zufeng; Dong, Xiaoyu; He, Sha; Xiang-qing, Pan; Tang, Lifang

doi:10.11607/ijp.4120

Cited by 56 publications

(52 citation statements)

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“…Notwithstanding, such use of intracoronal posts is not without its hazards. The use of posts has been suggested to increase incidence of failure in the instance of post and tooth material modulus mismatch, excess dentin removal, and failure to provide adequate ferrule . Furthermore, posts may not be a viable option when confronted with certain canal morphology such as dilacerated or calcified canals …”

Section: Discussionmentioning

confidence: 99%

Preparation Ferrule Design Effect on Endocrown Failure Resistance

Einhorn¹,

DuVall

Wajdowicz

et al. 2017

Journal of Prosthodontics

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Under the conditions of this study, ferrule-containing endocrown preparations demonstrated significantly greater failure loads than standard endocrown restorations; however, calculated failure stress based on available surface area for adhesive bonding found no difference between the groups. Lower instances of catastrophic failure were observed with the endocrown preparations containing 1 mm of preparation ferrule design; however, regardless of the presence of ferrule, this study found that all endocrown restorations suffered a high proportion of catastrophic failures but at loads greater than reported under normal masticatory function.

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Section: Discussionmentioning

confidence: 99%

Preparation Ferrule Design Effect on Endocrown Failure Resistance

Einhorn¹,

DuVall

Wajdowicz

et al. 2017

Journal of Prosthodontics

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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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“…A post is not a good substitute for lack of natural tooth structure within the ferrule tooth/core/post complex. The quantity of natural tooth structure within the ferrule tooth/core/post complex is more important than a post in determining whether an abutment, on which a crown is cemented, will eventually fracture away from the root 2111213141516…”

Section: The Ferrule Effectmentioning

confidence: 99%

Post and core build-ups in crown and bridge abutments: Bio-mechanical advantages and disadvantages

Mamoun¹

2017

J Adv Prosthodont

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Dentists often place post and core buildups on endodontically treated abutments for crown and bridge restorations. This article analyzes the bio-mechanical purposes, advantages and disadvantages of placing a core or a post and core in an endodontically treated tooth and reviews literature on post and core biomechanics. The author assesses the scientific rationale of the claim that the main purpose of a post is to retain a core, or the claim that posts weaken teeth. More likely, the main function of a post is to help prevent the abutment, on which a crown is cemented, from fracturing such that the abutment separates from the tooth root, at a fracture plane that is located approximately and theoretically at the level of the crown (or ferrule) margin. A post essentially improves the ferrule effect that is provided by the partial fixed denture prosthesis. This paper also explores the difference between bio-mechanical failures of crowns caused by lack of retention or excess taper, versus failures due to a sub-optimal ferrule effect in crown and bridge prostheses.

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Effect of Post Placement on the Restoration of Endodontically Treated Teeth: A Systematic Review

Cited by 56 publications

References 0 publications

Preparation Ferrule Design Effect on Endocrown Failure Resistance

Preparation Ferrule Design Effect on Endocrown Failure Resistance

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

Post and core build-ups in crown and bridge abutments: Bio-mechanical advantages and disadvantages

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