Development of a new direct core build-up method using a hollow fiber-reinforced post

Inaba, Yoji; Teraoka, F; Nakagawa, Masafumi; Imazato, Satoshi

doi:10.4012/dmj.2013-038

Cited by 4 publications

(3 citation statements)

References 23 publications

(33 reference statements)

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“…Various construction methods have been developed to fill root canals with fiber posts [ 5 , 6 , 7 , 8 ]. For example, several reports have indicated that the risk of root fracture decreases when the root canal is filled with fiber posts, as well as sleeve and accessory fiber posts [ 9 , 10 , 11 , 12 ]; furthermore, specific fiber-post arrangements can reinforce the match of the fiber post to the root canal as well as its retention therein [ 13 , 14 ].…”

Section: Introductionmentioning

confidence: 99%

Influence of New Sleeve Composite on Fracture Behavior of Anterior Teeth with Flared Root Canals

et al. 2022

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We evaluated the fracture strength and failure mode of non-ferrule teeth with flared root canals that were restored using new experimental sleeve composites. Fifty endodontically treated anterior teeth with flared root canals were restored with direct restorations utilizing different techniques. Group A had teeth (non-ferrule) restored using commercialized MI glass fiber post + Gradia Core as core build-up. Group B had teeth (non-ferrule) restored with commercialized i-TFC glass fiber post + sleeve system. In Group C, the teeth (non-ferrule) were restored with an experimental sleeve composite with commercialized MI glass fiber post and Gradia Core. Group D, teeth (non-ferrule), were restored using custom-made tapered E-glass filling post and Gradia Core. Group E, teeth (with ferrule), were restored with commercialized MI glass fiber post + Gradia Core. After core construction, all specimens underwent direct composite crown restoration and were loaded until fracture using a universal testing machine. Average fracture loads were compared, and the failure modes were observed. Group C exhibited significantly greater fracture strength than other groups (p < 0.05). Favorable fracture teeth ratio of group C was more than that of the other groups. Thus, the new experimental sleeve composite could be clinically useful for core construction of non-ferrule teeth.

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Section: Introductionmentioning

confidence: 99%

Influence of New Sleeve Composite on Fracture Behavior of Anterior Teeth with Flared Root Canals

et al. 2022

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“…Thus, some researchers consider that conventional post-core systems especially for large and flared root canals are an inefficient construction method [ 2 , 5 , 7 , 8 ]. To strengthen large root canals, additional auxiliary fiber posts were used to support the primary fiber post [ 9 , 10 ]. Keeping in mind that the endodontic canal is often a flared form and even if auxiliary posts are used, the problem of resin space in the cervical region cannot be completely solved.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of New Hollow Sleeve Composites for Direct Post-Core Construction

et al. 2021

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The preset shape and diameter of a prefabricated FRC post rarely follows the anatomy of the root canal. To solve this problem, a new hollow sleeve composite (HSC) system for post-core construction was developed and characterized. A woven fiber was impregnated with two types of resins: Bis-GMA or PMMA, and rolled into cylinders with outer diameter of 2 mm and two different inner diameters, namely 1.2 or 1.5 mm. The commercial i-TFC system was used as a control. Dual-cure resin composite was injected into these sleeves. Additionally, conventional solid fiber post was used as the inner part of the sleeve. The three-point bending test was used to measure the mechanical properties of the specimens and the fracture surface was examined using an electron microscope (SEM). The HSC (1.5 mm, Bis-GMA) revealed a statistically similar flexural modulus but higher flexural strength (437 MPa) compared to i-TFC (239 MPa; ANOVA, p < 0.05). When a fiber post was added inside, all values had a tendency to increase. After hydrothermal accelerated aging, the majority of specimens showed a significant (p < 0.05) decrease in flexural strength and modulus. SEM fracture analysis confirmed that the delamination occurred at the interface between the outer and inner materials. The HSC system provided flexibility but still high mechanical values compared to the commercial system. Thus, this system might offer an alternative practical option for direct post-core construction.

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“…The recommended post diameter should be less than one-third of the diameter of the root at the CEJ. Post removal, internal resorption and laring at the coronal region to attain access to the apical portion are the ways known to reduce dentin thickness at the coronal part (Inaba et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

Association Between Type of Tooth and Number of Walls Present in Teeth Undergoing FRC Post - An Institution Based Retrospective Study

Cinthura¹,

Nasim²,

Rajasekar³

2020

ijrps

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Bondable fibre reinforced composite posts have gained popularity over the years for reinforcement of endodontically treated teeth. Success rate of these posts has been attributed to their low elastic modulus, resistance to high fatigue, excellent light conductivity etc. This study aimed to evaluate the Fibre-reinforced composite posts among different teeth and to know its association with the number of walls remaining. Data of 233 patients for whom FRC posts were placed at the Department of Conservative Dentistry and Endodontics was obtained from the Dental archives of Saveetha Dental College, Chennai. The type of tooth and number of walls present among age groups and gender were studied retrospectively. The results of the study showed that the use of FRC posts had a male predilection (53.65%) and 31-40 years was the most common age group among patients. A most common tooth was 21 (22.3%), followed by 11 (20.6%) and the least preferred teeth for FRC posts were 52 and 53 (0.4% each). It was observed that tooth type and the number of walls present had no association (p=0.261). Most prevalent number of coronal walls remaining in the tooth that underwent FRC were 2 walls (51.5%). The study draws attention to the fact that use of FRC posts has gained popularity over the years and there is a significant evolution for newer post systems to reduce the failure rate of post endodontic treatment with post and core systems. Since fibre-reinforced systems are incorporated into clinical practice more frequently, there is a need for various clinical studies evaluating the success rate despite the high number of laboratory studies pertaining to the characteristics of fibre posts.

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Development of a new direct core build-up method using a hollow fiber-reinforced post

Cited by 4 publications

References 23 publications

Influence of New Sleeve Composite on Fracture Behavior of Anterior Teeth with Flared Root Canals

Influence of New Sleeve Composite on Fracture Behavior of Anterior Teeth with Flared Root Canals

Evaluation of New Hollow Sleeve Composites for Direct Post-Core Construction

Association Between Type of Tooth and Number of Walls Present in Teeth Undergoing FRC Post - An Institution Based Retrospective Study

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