A comparison of the fracture resistance of premolars without a ferrule with different post systems

Kul, Esra; Yanıkoğlu, Nuran; Yeter, Kübra Yeşildal; Bayındır, Funda; Sakarya, Rüştü Ersoy

doi:10.1016/j.prosdent.2019.08.018

Cited by 15 publications

(8 citation statements)

References 29 publications

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“…The post materials were formerly believed to have a direct impact on the teeth mechanical behaviour and mode of failure. The recent studies reported that the post materials showed no influence on the fracture strength [42] nor the mode of failure [43]. Nowadays, the most important factors are the ferrule presence [44] and the post bonding condition [45].…”

Section: Discussionmentioning

confidence: 99%

Fracture resistance of maxillary premolars restored with different endocrown designs and materials after artificial ageing

et al. 2022

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Purpose: To evaluate the effect of three different designs and two monolithic ceramic materials on the durability and fracture resistance of endocrowns on maxillary first premolars, in comparison to post-and-core crowns. Methods: Fifty-six maxillary premolars were endodontically treated and shortened to a level of 2 mm from the cervical line, and randomly categorized into six endocrown groups and post-and-core crown control group (n=8); E1; endocrowns with flat occlusal table (without ferrule), E2; endocrowns with 1.5 mm circumferential ferrule, E3; endocrowns with 1.5 mm buccal ferrule preparation. Two materials were used for endocrowns: zirconia (4YSZ; Z), and lithium disilicate (L). The control group was restored with zirconia posts, and lithium disilicate crowns. All restorations were bonded using Panavia V5 and its respective primers and underwent thermo-mechanical fatigue with a 10 kg dynamic load for 1,200,000 cycles and thermocycling between 5 and 55 °C. Thereafter all survived specimens were loaded to fracture. The results were statistically analyzed using ANOVA and T-Test. Results: None of the specimens showed any signs of debonding or fracture caused by the fatigue test. The PC control group showed no statistically significant difference in comparison to groups ZE1, ZE2 and LE2 ( p > 0.05 ). However, it was significantly different from groups LE1, LE3, and ZE3 ( p ≤ 0.05 ). Conclusions: Preparation designs and materials affected the fracture resistance of endocrowns. The results showed a superiority of the post-and-core crowns, zirconia/lithium disilicate endocrowns with 1.5 mm circumferential ferrule, and zirconia endocrowns with the flat occlusal table.

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Section: Discussionmentioning

confidence: 99%

Fracture resistance of maxillary premolars restored with different endocrown designs and materials after artificial ageing

et al. 2022

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“…Many studies have reported that the retention of crown prosthetic restorations increases with a ferrule on the remaining tooth when the abutment tooth is built up with resin and FRC posts 4,12,[23][24][25] . For adequate retention of the restoration, the remaining coronal tooth has a height greater than 1.5 mm 12) , and when the remaining coronal tooth does not have at least one wall with a height of 2.0 mm 25) , an FRC post is necessary.…”

Section: Fracture Resistance Of Root With Resin Abutmentmentioning

confidence: 99%

Influence of one-wall remaining coronal tooth with resin abutment and fiber post on static and dynamic fracture resistance

et al. 2022

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“…that showed a non-significant difference in fracture resistance of endodontically treated teeth received single FRC or bundled FRC restored with lithium disilicate crowns. Similarly, they also reported root fracture as the dominant failure type ( 20 ). In contrast, Hegde and Arora showed that bundled FRCs (Rebilda post GT system) exhibited maximum fracture resistance compared to elastic FRC post (EverStick fiber post), prefabricated post, and resin-composite build-up without an intracanal post ( 21 ).…”

Section: Discussionmentioning

confidence: 93%

“…Oblique load causes a worst-case scenario for fracture resistance testing of endodontically treated teeth ( 22 ). Thereby, substantial stress is expected to be induced at the cervical area ( 23 ), in absence of any crown and ferrule ( 20 ), and convey to root structure causing heavy forces on the post/luting agent/radicular dentin complex causing root fracture. Absence of ferrule regardless of intracanal post type results in root fracture ( 20 ).…”

Section: Discussionmentioning

confidence: 99%

Fracture resistance of endodontically treated maxillary incisors restored with single or bundled glass fiber-reinforced composite resin posts

Ranjkesh¹,

Haddadi²,

Krogsgaard³

et al. 2022

J Clin Exp Dent

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Background To compare the fracture resistance of endodontically treated maxillary incisors restored with single versus bundled glass fiber-reinforced composite resin posts (FRC). Material and Methods Twenty-four maxillary incisors underwent root canal preparation (1.5-mm-diameter post spaces after canal obturation). Teeth were randomly divided into two groups (n = 12). Two different FRC groups were used for the intracanal post treatment. Single FRC (Rebilda Post system, 1.5 mm diameter) and bundled FRC (Rebilda Post GT, 12 fiber bundles, 1.4 mm diameter) were bonded to the prepared canals using dual-cure resin-based luting cement. Specimens were kept in humid at 37°C for one day. The fracture resistance testing was performed using universal testing machine by applying a compressive static load at a 135° angel to the axis of the teeth. The failure type after fracture was examined by visual inspection. Results The fracture resistance of teeth with single FRC (Rebilda Post) and bundled FRC (Rebilda Post GT) were 787 ± 156 and 850 ± 166 Newton, respectively. There was no statistical significant difference between the two groups. Root fracture was the major failure type in both groups. Conclusions The fracture resistance of endodontically treated maxillary incisors with bundled FRC (Rebilda Post GT) did not differ from incisors with single FRC (Rebilda Post). Key words: Endodontically-treated teeth, fracture resistance, glass fiber post, intracanal post.

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A comparison of the fracture resistance of premolars without a ferrule with different post systems

Cited by 15 publications

References 29 publications

Fracture resistance of maxillary premolars restored with different endocrown designs and materials after artificial ageing

Fracture resistance of maxillary premolars restored with different endocrown designs and materials after artificial ageing

Influence of one-wall remaining coronal tooth with resin abutment and fiber post on static and dynamic fracture resistance

Fracture resistance of endodontically treated maxillary incisors restored with single or bundled glass fiber-reinforced composite resin posts

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