Fracture Resistance of Teeth Restored with Post-retained Restorations: An Overview

AL‐Omiri, Mahmoud K.; Mahmoud, Ahmad Abdelaziz; Rayyan, Mohammad; Abu‐Hammad, Osama

doi:10.1016/j.joen.2010.06.005

Cited by 139 publications

(55 citation statements)

References 143 publications

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“…Threaded posts are more retentive than cemented ones, but create more dentin stress during insertion [6,7]. To reduce the internal stress created by the threaded pins, limit the number of threads and release one thread by a reverse movement at the end of post insertion, have been taken into consideration [8,9].…”

Section: Case Reportmentioning

confidence: 99%

Direct odontal restoration with pre-fabricated screw metal post-case report

Perlea

Gheorghiu

Ciolan³

et al. 2017

ARS Medica Tomitana

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We are very often confronted in dental daily practice with the clinical situations where important loss of hard dental structure is present and direct restoration is required. In these cases, armed odontal direct restauration can be performed, using additional retention systems. The restoration of the coronal part in nonvital teeth has certain specific aspects and one of the most used endodontic anchorage is the metal threaded prefabricated posts. Current techniques and materials allow the dentist to fulfill all the clinical requirements, in terms of resistance to occlusal stress and the esthetic aspect of the restoration.

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Section: Case Reportmentioning

confidence: 99%

Direct odontal restoration with pre-fabricated screw metal post-case report

Perlea

Gheorghiu

Ciolan³

et al. 2017

ARS Medica Tomitana

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“…The use of an intraradicular post for endodontically treated teeth has been indicated frequently in the clinical routine for fixed restorations, since the tooth becomes more fragile and susceptible to fracture after endodontic treatment 1 , especially in teeth with small amounts of coronal structure 2 .…”

Section: Introductionmentioning

confidence: 99%

Influence of diameter and intraradicular post in the stress distribution. Finite element analysis

Lemos

Almeida

Batista

et al. 2016

Rev. odontol. UNESP

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ResumoIntrodução: O comportamento biomecânico de dentes tratados endodonticamente é variável conforme o material restaurador selecionado e situação do dente a ser restaurado. Objetivo: Analisar por meio do método dos elementos finitos bidimensional o comportamento biomecânico de diferentes retentores intrarradiculares e diâmetros em dentes com 2mm de remanescente coronário. Material e método: Foram confeccionados seis modelos com três tipo de retentores: pino de fibra de vidro, pino de fibra de carbono e núcleo metálico fundido, ambos com diâmetro #1 (1,1mm de diâmetro) e #2 (1,3mm de diâmetro). A modelagem foi realizada através do programa Rhinoceros 4.0, e em seguida nos programas FEMAP 10.2 e NeiNastran 9.2 para desenvolvimento d os modelos de elementos finitos. Nos carregamentos foram utilizadas forças de 100N axial e oblíquo. Os resultados foram visualizados pelo mapa de tensão von Mises, e pela análise de variância (ANOVA) e pós-teste Tukey, com nível de significância à 5%. Resultado: O carregamento oblíquo apresentou maiores valores de tensões (p<0,001). O pino de fibra de vidro apresentou menores concentrações de tensões em ambos os carregamentos (p<0,001). O pino de fibra de carbono apresentou diferença significativa em relação ao núcleo metálico somente no carregamento oblíquo (p=0,007). O diâmetro não influenciou para o aumento de tensões dos retentores avaliados (p=0,302). Conclusão: Os pinos de fibras são mais favoráveis para restaurações de dentes tratados endodonticamente; O aumento do diâmetro não influenciou no aumento de tensões; A carga oblíqua é mais prejudicial à tanto para o retentor quanto para a estrutura dentária.Descritores: Prótese dentária; técnica para retentor intrarradicular; prótese parcial fixa. AbstractIntroduction: The biomechanical behavior of endodontically treated teeth depending on the selected restorative material and tooth situation to be restored. Objective: To analyze by the two-dimensional finite element method the biomechanical behavior of different diameters in intraradicular posts and teeth with coronal remaining of 2mm. Material and method: Six models were made with three types of posts, as follows: Glass fiber post, carbon fiber post, and cast metal post, both with diameter # 1 (1.1 mm in diameter) and # 2 (1.3 mm of diameter). The modeling was performed using the Rhinoceros 4.0 program. The FEMAP 10.2 and NEiNastran 9.2 programs were used to develop finite element models. The loading used was 100N for axial and oblique forces. The results were visualized using the von Mises stress map. The statistical analysis was made using analysis of variance (ANOVA) and Tukey post-test, with a significance level of 5%. Result: The oblique loading stress values were higher than the axial loading (p<0.001) for both situations. The glass fiber post showed the lowest concentrations of stress on both loads (p<0.001). The carbon fiber post presented significant difference compared to the cast metal post, only in the oblique load (p=0.007). The diameter did not increase the stress o...

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“…This biomechanical behaviour avoids the appearance of root fractures (4-6). Nonetheless, insufficient post rigidity could lead to excessive deformation and stress concentration zones during function, giving rise to marginal failure (7,8). …”

Section: Introductionmentioning

confidence: 99%

“…Firstly, there are dental factors such as how much of the tooth remains or whether there is a ferrule measuring at least 1.5-2 mm in length (8), and conditions such as periodontal status, relation to adjoining and opposing teeth, parafunction or habits that may constitute contraindications for tooth restoration. Secondly, there are post-related factors: length, taper, diameter and the material from which the post is made (9).…”

Section: Introductionmentioning

confidence: 99%

Fibre post behaviour prediction factors. A review of the literature

Bru¹,

Forner²,

Llena³

et al. 2013

J Clin Exp Dent

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Introduction: The advantages of fibre posts over stainless steel posts have been demonstrated in numerous studies. For clinical success, various factors need to be taken into account in post-retained restorations. Material and Methods: A review was made of literature on fibre posts published from 2000 to February 2011, identified through searches of the PubMed/Medline databases. Results: The position of the tooth in the arch, ferrule size, proximal contact, periodontal support and restoration type are survival prediction factors that should be considered when performing post-endodontic restoration. Since fibre posts present good biomechanical behaviour as a result of their elastic modulus, which is similar to that of dentine, treatment failure occurs through decementation rather than because of root fracture, as occurs with metal posts. The shape of the post and, consequently, the thickness of the luting, can modify the retention capacity. Consequently, more anatomically-shaped posts have been developed, as have new techniques to reduce the volume of the dentine/cement interface: lateral condensation, surface remodelling or custom designs. Conclusions: Different aspects of the preparation process can be modified to assist in improving fibre post retention, but further investigation, mainly clinical, is needed to acquire a better understanding of how different factors influence the long-term clinical behaviour of the posts. Key words:Fiber post, post shape, post adaptation, post retention, endodontics.

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Fracture Resistance of Teeth Restored with Post-retained Restorations: An Overview

Cited by 139 publications

References 143 publications

Direct odontal restoration with pre-fabricated screw metal post-case report

Direct odontal restoration with pre-fabricated screw metal post-case report

Influence of diameter and intraradicular post in the stress distribution. Finite element analysis

Fibre post behaviour prediction factors. A review of the literature

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