Fracture resistance of structurally compromised root filled bovine teeth restored with accessory glass fibre posts

Martelli, Hercílio; Pellizzer, Eduardo Piza; Rosa, Bruno T.; Lopes, Murilo Baena; Gonini, Alcides

doi:10.1111/j.1365-2591.2008.01424.x

Cited by 34 publications

(48 citation statements)

References 20 publications

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“…Polimerization contraction stress has been identified as the main reason for post based restoration failures (15,16). Several techniques have been proposed to reduce the discrepancy between the prefabricated fiber post and the root channel anatomy such as the composite filling of the root channel (11,17), the anatomic shaping of the post through a direct resin application (11,(18)(19)(20)(21) and the use of an extra post (11,18,22). Anyway, it has been proved that anatomic posts are the gold standard for wide root channels for an adhesion reason, better fracture resistance, polymerization contraction stress limitation and reduction in bubbles and gap production during the cementation (11).…”

Section: In Vitro Evaluation Of the Post-space Depth Reading With An mentioning

confidence: 99%

In Vitro Evaluation of the Post-Space Depth Reading With an Intraoral Scanner (Ios) Compared to a Traditional Silicon Impression

Pinto

Arcuri

Carosi

et al. 2017

ORL

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SUMMARYObjectives. The aim of the study was to assess the depth and quality of the post-space reading, using an IOS without scanpost, compared to a traditional silicon technique. Methods. Six extracted bicuspids were decoronated and endodontically treated. After having prepared the space for the posts, a structure in pink acrylic resin was created with two resin elements. At the center of the structure one sample was put at a time. Digital and traditional impressions were taken for each sample. Digital impressions were developed through the Computer-aided design (CAD) software in order to integrate the scanner results into a three-dimensional grid to make the measurements. A K-file was used to measure the length of the postspace of each sample obtained through the traditional silicon impression and subsequently the measurement results were reported on a millimeter gauge. Furthermore, an assessment of the width of the entrances of the post-spaces was carried out. Results. The mean reading depth discrepancy expressed in percentages (19.58%) indicates that the digital impression with current technologies fails to impress clearly the post-space. Standard deviation of the data expressed in percentage is 13.89, suggesting that the values were not similar to each other. In two cases the digital technique has achieved less than 10% difference compared to the traditional technique, but there have been also cases in which the variation in depth has reached almost 40%. The samples that showed the minor discrepancy between the two techniques expressed the widest post-space entrance. Conclusions. In this in vitro study, the application of the IOS for the post-space reading in order to deliver an anatomic post has been proven to be still not reliable, as there are still depth reading limitations for the narrow root channels. In fact, in this type of channels it is difficult to reach with the light beam of the IOS the deepest areas of the post-space, with a consequent incomplete post-space reading.

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Section: In Vitro Evaluation Of the Post-space Depth Reading With An mentioning

confidence: 99%

In Vitro Evaluation of the Post-Space Depth Reading With an Intraoral Scanner (Ios) Compared to a Traditional Silicon Impression

Pinto

Arcuri

Carosi

et al. 2017

ORL

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“…Endodontically treated teeth with limited residual tooth structure are commonly restored with a post and core 1) . The use of fiber-reinforced posts is a widely accepted because of an elastic modulus similar to that of dentine 2) , and an ability to be bonded to dentin using an adhesive technique 3) .…”

Section: Introductionmentioning

confidence: 99%

Push-out bond strength of a new post system after various post space treatments

Akman

Eldeniz

Ince

et al. 2016

Dental Materials Journal

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To assess the effect of post-space treatment with chelating agents on the push-out bond-strength of a glass fiber post-system. Fortyeight human teeth were decoronated. The roots were prepared to size 40 and obturated. The post-spaces were prepared with PeesoReamer drills. The post-spaces were irrigated with (i) NaOCl and EDTA with chlorhexidine (QMix), (ii) NaOCl and EDTA, (iii) NaOCl and Citric acid, (iv) NaOCl and saline as a control group. i-TFC glass fiber posts were then luted with i-TFC bond system. The samples were horizontally sectioned. The displacement resistance was measured. Push-out bond-strength (MPa) was calculated. Data were analyzed. NaOCl/QMix group showed highest values to dentine whereas NaOCl/Citric acid group showed lowest values. i-TFC post-system demonstrated equal bond strength values when post-space treated with either NaOCl/EDTA or NaOCl/Saline. It can be concluded that post-space could be treated with NaOCl and QMix in order to increase adhesion of i-TFC post-system to rootdentine.

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“…O uso de pinos pré-fabricados se apresenta como uma opção de tratamento que oferece ótima estética e função, podendo ser fixados por meio de adesão à dentina radicular (Schwartz e Robbins, 2004). Adicionalmente um reduzido número de fraturas radiculares ou modo de fratura mais favoráveis, que são passíveis de reparação, são observadas com o uso desses pinos (Salameh et al, 2006;Martelli et al, 2008, Santos-Filho et al, 2008.…”

Section: Discussionunclassified

“…Nesses, assim como no presente trabalho, os dentes bovinos substituem satisfatoriamente a dentina humana (Wrbas KT, Altenburger MJ, Schirrmeister JF, Bitter K, Kielbassa AM, 2007, Martelli et al, 2008.…”

Section: Discussionunclassified

“…Existe uma modificação deste teste, onde são obtidas fatias de 1mm de espessura, na qual será aplicada uma carga compressiva constante com uma ponta específica correspondente ao diâmetro do pino, até o momento do descolamento do pino. A diminuição da espessura da fatia é justificada por uma maior uniformidade na distribuição do estresse no momento da aplicação da carga, além de possibilitar a diferenciação das fatias de acordo com os terços radiculares correspondentes (Goracci et al, 2004 (Salameh et al, 2006;Martelli et al, 2008). Sua introdução expandiu a aplicação da odontologia adesiva à endodontia .…”

Section: Introductionunclassified

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Resistência da união da cimentação adesiva de pinos de fibra de vidro frente ao teste de remoção por extrusão

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Fracture resistance of structurally compromised root filled bovine teeth restored with accessory glass fibre posts

Abstract: The use of accessory glass fibre posts affected the fracture mode favorably: 90% of fractures in group AGP were in the coronal third.

Cited by 34 publications

References 20 publications

In Vitro Evaluation of the Post-Space Depth Reading With an Intraoral Scanner (Ios) Compared to a Traditional Silicon Impression

In Vitro Evaluation of the Post-Space Depth Reading With an Intraoral Scanner (Ios) Compared to a Traditional Silicon Impression

Push-out bond strength of a new post system after various post space treatments

Resistência da união da cimentação adesiva de pinos de fibra de vidro frente ao teste de remoção por extrusão

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