Influence of glass fibre post length and remaining dentine thickness on the fracture resistance of root filled teeth

Junqueira, Rafael Binato; Carvalho, Rodrigo Furtado de; Marinho, Carla; Valera, Márcia Carneiro; Carvalho, Cláudio Antônio Talge

doi:10.1111/iej.12653

Cited by 29 publications

(41 citation statements)

References 37 publications

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“…Despite all the benefits, fiber posts serve only to create adequate retention for the resin composite core to support a full crown. This indication is similar to metal posts, in which previous preparation of the root canal is required, involving removal of part of the endodontic obturation and widening of the canal, thereby possibly decreasing the fracture resistance of dental remnants [6]. Conversely, when a minimum amount of dental remnant exists, it allows for an adhesive interface between enamel and cement, enabling an endocrown restoration to be used [7].…”

Section: Introductionmentioning

confidence: 99%

Endocrown restorations: Influence of dental remnant and restorative material on stress distribution

et al. 2018

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Section: Introductionmentioning

confidence: 99%

Endocrown restorations: Influence of dental remnant and restorative material on stress distribution

et al. 2018

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“…The mechanical behavior of these teeth may vary according to the features of the posts, such as their manufacturing material. [ 19 ] Various studies have shown that teeth restored with metallic posts show a higher prevalence of catastrophic fracture patterns. [ 19 20 ] On the contrary, a repairable pattern of fracture was observed in roots restored with fiber posts, especially glass fiber.…”

Section: Discussionmentioning

confidence: 99%

Fracture resistance of endodontically treated maxillary premolars with a longer single post and shorter double posts of different sizes: An in vitro study

Mayya¹,

Naik²,

Mayya

et al. 2020

J Int Soc Prevent Communit Dent

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A BSTRACT Aim: The aim of this study was to determine if there is any difference in fracture resistance between different post sizes and lengths when more than one post is involved. Materials and Methods: Thirty extracted maxillary first premolars were endodontically treated and divided into three groups: In Group 1 (control group), no post space preparation was conducted and access cavities were restored with composite; in Group 2 (single post), post space preparation of 10 mm was carried out only in one of the canals; and in Group 3 (double post), post space preparation of 5 mm was conducted in both the canals. Appropriately sized glass fiber posts were cemented in Groups 2 and 3 followed by core buildup. The fracture resistance of the specimen was measured using a universal testing machine and the data analyzed. The mean fracture resistance values of the three groups were compared applying one-way analysis of variance (ANOVA) followed by post hoc Tukey’s test. The data were analyzed using Statistical Package for the Social Sciences software program, version 15.0. South Asia, Bangalore. Results: The control group had a significantly lower fracture resistance value as compared to Groups 2 and 3. No statistically significant difference was observed in the fracture resistance between Groups 2 and 3. Conclusions: No significant difference was observed between the fracture resistance of endodontically treated maxillary first premolars restored with size 3 single post of longer length and size 1 double posts of shorter lengths.

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“…Numerous tests are available for evaluating the mechanical properties of posts and cores [15][16][17][18] . In the present study, static fracture load test was performed to compare the mechanical stability of endocrowns and post-cores.…”

Section: Discussionmentioning

confidence: 99%

Fracture load of ceramic crowns supported by some novel anchoring dental systems

Nagaş¹,

Nagaş²,

Eğilmez³

et al. 2017

Acta Odontologica Turcica

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OBJECTIVE: This study aimed to evaluate the fracture load of endocrown restorations and fiber-reinforced composites (FRCs) fabricated through computer-aided design/ computer-aided manufacturing (CAD-CAM) for postcores of anterior teeth. MATERIALS AND METHOD: Forty post-core-supported crowns and endocrowns were fabricated through CAD-CAM on a canine root zirconia model (Ice Zirconia, ZirkonZahn GmBH, Bruneck, Italy). The static load-bearing capacity was measured on the following restoration groups: Group 1: zirconia crown (Prettau anterior, ZirkonZahn GmBH) retained with CAD-CAM one-piece FRC post-core crown system (experimental CAD-CAM FRC block); Group 2: zirconia crown (Prettau anterior) retained with FRC post (GC Corp., Tokyo, Japan) with discontinuous fiber composite (EverX posterior, GC Corp) core; Group 3: zirconia endocrown (Prettau anterior); and Group 4: lithium disilicate ceramic endocrown (IPS e.max CAD, Ivoclar Vivadent AG, Schaan, Liechtenstein) (n = 10/per group). After the adhesive cementation of crowns/endocrowns to the zirconia root model, a load was applied at 45° to the long axis of the teeth and measured using a universal testing machine. The fracture modes were visually examined. The statistical analyses were performed using one-way ANOVA and Tukey post-hoc tests (p < 0.05). RESULTS: The fracture load significantly differed among the groups (p < 0.05) and was ranked as follows: Group 3 (1168 ± 141 N) > Group 4 (721 ± 96 N) ≥ Group 1 (680 ± 86 N) > Group 2 (534 ± 36 N). CONCLUSION: Endocrown monoblock restorations can be used as an alternative to fiber-reinforced post-core supported crown restorations.

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Influence of glass fibre post length and remaining dentine thickness on the fracture resistance of root filled teeth

Abstract: Reduced dentine thickness in roots with longer posts had lower fracture resistance values, as catastrophic failure was more predominant.

Cited by 29 publications

References 37 publications

Endocrown restorations: Influence of dental remnant and restorative material on stress distribution

Endocrown restorations: Influence of dental remnant and restorative material on stress distribution

Fracture resistance of endodontically treated maxillary premolars with a longer single post and shorter double posts of different sizes: An in vitro study

Fracture load of ceramic crowns supported by some novel anchoring dental systems

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