Evaluation of fiber post-supported restorations under simulated occlusal loading

Jww Chang, Irwan Soo Mohd Amin Soo, Gary S P Cheung

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

Statement of problem: There is a lack of information comparing the effect of a rigid versus flexible post on the marginal seal of post-and-core supported crowns subjected to long-term repeated loading. Purpose: The purpose of this study was to examine the leakage pattern of complete coverage restorations retained with either a metal or fiber-reinforced resin post under simulated occlusal loads. Material and methods: Thirty-six maxillary central incisors were endodontically treated and provided with a post-and-core supported crown. One group was restored with a fiber-post (EasyPost Lux) and another was restored with a metal post (Parapost) (n=12). Both groups were loaded for 120 000 cycles to 70 N while immersed in a dye solution. A control group (n=12), similarly restored with a fiber post but not loaded, was also included. All teeth were transversely sectioned serially from the tooth-core interface towards the apex. Digital photographs were made to determine the extent of leakage on the buccal, mesial, palatal, and distal aspects along the depth of the post. A nonparametric Kruskal-Wallis test was used to determine any difference between groups (α=.05). Results: Dye penetration occurred in all stress-cycled specimens and was more extensive on the palatal than other aspects. The fiber-post group cyclically stressed to 70 N showed a significantly greater amount of leakage than the control or the Parapost group (P<.05). Conclusions: In in vitro testing, the rigidity of the post influenced the seal of post-and-core-supported crowns at the palatal margin.

Original languageEnglish
Pages (from-to)158-164
Number of pages7
JournalJournal of Prosthetic Dentistry
Volume108
Issue number3
DOIs
Publication statusPublished - Sep 2012

Fingerprint

Crowns
Tooth
Coloring Agents
Metals
Cheek
Incisor
Control Groups

ASJC Scopus subject areas

  • Oral Surgery

Cite this

Evaluation of fiber post-supported restorations under simulated occlusal loading. / Chang, Jww; Mohd Amin Soo, Irwan Soo; Cheung, Gary S P.

In: Journal of Prosthetic Dentistry, Vol. 108, No. 3, 09.2012, p. 158-164.

Research output: Contribution to journalArticle

@article{7e2a570a0adc4819bf369b5dec36f67c,
title = "Evaluation of fiber post-supported restorations under simulated occlusal loading",
abstract = "Statement of problem: There is a lack of information comparing the effect of a rigid versus flexible post on the marginal seal of post-and-core supported crowns subjected to long-term repeated loading. Purpose: The purpose of this study was to examine the leakage pattern of complete coverage restorations retained with either a metal or fiber-reinforced resin post under simulated occlusal loads. Material and methods: Thirty-six maxillary central incisors were endodontically treated and provided with a post-and-core supported crown. One group was restored with a fiber-post (EasyPost Lux) and another was restored with a metal post (Parapost) (n=12). Both groups were loaded for 120 000 cycles to 70 N while immersed in a dye solution. A control group (n=12), similarly restored with a fiber post but not loaded, was also included. All teeth were transversely sectioned serially from the tooth-core interface towards the apex. Digital photographs were made to determine the extent of leakage on the buccal, mesial, palatal, and distal aspects along the depth of the post. A nonparametric Kruskal-Wallis test was used to determine any difference between groups (α=.05). Results: Dye penetration occurred in all stress-cycled specimens and was more extensive on the palatal than other aspects. The fiber-post group cyclically stressed to 70 N showed a significantly greater amount of leakage than the control or the Parapost group (P<.05). Conclusions: In in vitro testing, the rigidity of the post influenced the seal of post-and-core-supported crowns at the palatal margin.",
author = "Jww Chang and {Mohd Amin Soo}, {Irwan Soo} and Cheung, {Gary S P}",
year = "2012",
month = "9",
doi = "10.1016/S0022-3913(12)60140-1",
language = "English",
volume = "108",
pages = "158--164",
journal = "Journal of Prosthetic Dentistry",
issn = "0022-3913",
publisher = "Mosby Inc.",
number = "3",

}

TY - JOUR

T1 - Evaluation of fiber post-supported restorations under simulated occlusal loading

AU - Chang, Jww

AU - Mohd Amin Soo, Irwan Soo

AU - Cheung, Gary S P

PY - 2012/9

Y1 - 2012/9

N2 - Statement of problem: There is a lack of information comparing the effect of a rigid versus flexible post on the marginal seal of post-and-core supported crowns subjected to long-term repeated loading. Purpose: The purpose of this study was to examine the leakage pattern of complete coverage restorations retained with either a metal or fiber-reinforced resin post under simulated occlusal loads. Material and methods: Thirty-six maxillary central incisors were endodontically treated and provided with a post-and-core supported crown. One group was restored with a fiber-post (EasyPost Lux) and another was restored with a metal post (Parapost) (n=12). Both groups were loaded for 120 000 cycles to 70 N while immersed in a dye solution. A control group (n=12), similarly restored with a fiber post but not loaded, was also included. All teeth were transversely sectioned serially from the tooth-core interface towards the apex. Digital photographs were made to determine the extent of leakage on the buccal, mesial, palatal, and distal aspects along the depth of the post. A nonparametric Kruskal-Wallis test was used to determine any difference between groups (α=.05). Results: Dye penetration occurred in all stress-cycled specimens and was more extensive on the palatal than other aspects. The fiber-post group cyclically stressed to 70 N showed a significantly greater amount of leakage than the control or the Parapost group (P<.05). Conclusions: In in vitro testing, the rigidity of the post influenced the seal of post-and-core-supported crowns at the palatal margin.

AB - Statement of problem: There is a lack of information comparing the effect of a rigid versus flexible post on the marginal seal of post-and-core supported crowns subjected to long-term repeated loading. Purpose: The purpose of this study was to examine the leakage pattern of complete coverage restorations retained with either a metal or fiber-reinforced resin post under simulated occlusal loads. Material and methods: Thirty-six maxillary central incisors were endodontically treated and provided with a post-and-core supported crown. One group was restored with a fiber-post (EasyPost Lux) and another was restored with a metal post (Parapost) (n=12). Both groups were loaded for 120 000 cycles to 70 N while immersed in a dye solution. A control group (n=12), similarly restored with a fiber post but not loaded, was also included. All teeth were transversely sectioned serially from the tooth-core interface towards the apex. Digital photographs were made to determine the extent of leakage on the buccal, mesial, palatal, and distal aspects along the depth of the post. A nonparametric Kruskal-Wallis test was used to determine any difference between groups (α=.05). Results: Dye penetration occurred in all stress-cycled specimens and was more extensive on the palatal than other aspects. The fiber-post group cyclically stressed to 70 N showed a significantly greater amount of leakage than the control or the Parapost group (P<.05). Conclusions: In in vitro testing, the rigidity of the post influenced the seal of post-and-core-supported crowns at the palatal margin.

UR - http://www.scopus.com/inward/record.url?scp=84865779729&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84865779729&partnerID=8YFLogxK

U2 - 10.1016/S0022-3913(12)60140-1

DO - 10.1016/S0022-3913(12)60140-1

M3 - Article

C2 - 22944311

AN - SCOPUS:84865779729

VL - 108

SP - 158

EP - 164

JO - Journal of Prosthetic Dentistry

JF - Journal of Prosthetic Dentistry

SN - 0022-3913

IS - 3

ER -