Fabrication of Custom Post‐And‐Core Using a Directly Fabricated Silicone Pattern and Digital Workflow

Farah, Ra’fat I.; Aloraini, Abdullah S.; Ali, Sanaa Najeh Al‐Haj

doi:10.1111/jopr.13218

Cited by 10 publications

(16 citation statements)

References 14 publications

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“…Formally, digitizing this procedure has been limited to scanning the traditional impressions, or the stone models obtained from them, which would transfer the traditional impression shortcomings to the resulted posts. [13][14][15][16] Scanning the post space directly would eliminate the fabrication of the resin pattern in the conventional technique and improve the accuracy of the post, conserve time, be more cost-effective, and overcome the disadvantages of casting. Fortunately, intraoral scanners have improved their capability to directly scan post space within the tooth.…”

Section: Discussionmentioning

confidence: 99%

A Fully Digital Method to Fabricate Custom Hybrid Ceramic One-Piece Post-and-Core: A Proof of Concept

Alhasher

Alfarsi

2022

Preprint

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Digital dentistry has saved time and cost and improved quality control of several dental treatment procedures. This study aimed to describe a fully digital method to fabricate a custom one-piece post-and-core out of hybrid ceramic that do not require the conventional costly and time consuming clinical and laboratory procedures. A post space was prepared in Typodent maxillary second premolar teeth. A direct digital scan for the post space was obtained using the Medit i700 intraoral scanner. The scan was then sent electronically to the CAD/CAM machine for virtual model creation, post-and-core designing and milling out of vita Enamic®. The resulted one-piece post-and-core was then compared to a conventionally-made custom lithium disilicate ceramic post made on the same tooth to verify the successfulness of this new fully digital technique to produce identical outcome to the conventional technique. This study showed that the full digital workflow for fabrication of custom hybrid ceramic one-piece post-and-core can be an acceptable alternative to the conventional methods, thus further advancing digital dentistry.

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Section: Discussionmentioning

confidence: 99%

A Fully Digital Method to Fabricate Custom Hybrid Ceramic One-Piece Post-and-Core: A Proof of Concept

Alhasher

Alfarsi

2022

Preprint

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“…Following the scan, a virtual design is created, and the cast post and core restoration is milled (or printed). 57 This technique was adopted in the earliest report on CAD/CAM fabricated post and cores, 14 where a custom-made zirconia post and core were milled from a zirconia block. Initially, a direct acrylic-resin pattern was fabricated to record the anatomy of the post space.…”

Section: Techniques For Fabricating Cad/cam Post and Corementioning

confidence: 99%

“…The fully digital or direct technique is beneficial as it reduces chairside time and simplifies the laboratory procedure for post and core fabrication. 57 Directly scanning the post space eliminates the risk of inaccuracies incurred by the use of impression materials, gypsum models, and pattern materials, such as resin and wax. 57 …”

Section: Techniques For Fabricating Cad/cam Post and Corementioning

confidence: 99%

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Customized Post and Cores Fabricated with CAD/CAM Technology: A Literature Review

al-Qarni¹

2022

IJGM

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Post and core restorations are a widely accepted method to restore endodontically treated teeth with compromised tooth structure. The use of computerized technology to fabricate customized post and cores is a simple and quick alternative to conventional methods. A literature search was conducted, and a summary of articles describing fabrication techniques and materials used to fabricate post and cores with computer-aided design and computer-aided manufacturing (CAD/CAM) has been provided. Several techniques have been reported to restore endodontically treated teeth with CAD/CAM post and cores, including direct and indirect methods. Zirconia, composite resin, and hybrid ceramic were the most commonly reported materials. Published reports on CAD/CAM post and core are limited; however, further studies are needed to investigate the long-term outcome of this treatment.

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“…6 Using new technologies and materials to fabricate customized post and core has been evaluated in the literature. [7][8][9][10][11][12][13][14] Computer-aided design and computer-aided manufacturing (CAD-CAM) subtractive and additive manufacturing (AM) can be used to manufacture custom post and cores. 15 Subtractive methods cause waste of raw materials and require sustainability and precision of milling tools.…”

mentioning

confidence: 99%

The impact of print orientation on the fracture resistance and failure patterns of additively manufactured cobalt‐chromium post and cores

Kalyoncuoğlu,

Ayyıldız,

Odabasi Tezer

2023

Journal of Prosthodontics

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PurposeThe aim of this study was to evaluate the impact of the print orientation of direct metal laser sintering (DMLS) posts and cores on the fracture resistance and failure patterns of endodontically treated mandibular premolar teeth.Materials and MethodsSixty intact human mandibular premolars were endodontically treated. The teeth were then randomly divided into four groups (n = 15). Cobalt‐chromium (Co‐Cr) metal posts were fabricated by traditional casting (Group C), and DMLS method in 0‐, 45‐ and, 90‐degree print orientations (Group DMLS 0, Group DMLS 45, and Group DMLS 90). The posts and cores were cemented with composite resin cement and subjected to compression test at a crosshead speed of 1 mm/min. Data was analyzed by using one‐way analysis of variance ANOVA and multiple comparison post hoc Tukey tests (α = .05). Specimens were viewed under a stereo microscope with x20 magnification for evaluating the fracture types.ResultsNo significant differences were found among the groups tested in terms of fracture resistance (P>0.05). Group C and Group DMLS 0 group exhibited similar fracture patterns.ConclusionsIt is possible to produce post and core restorations with the DMLS technique and use them clinically. Print orientation did not influence the fracture resistance. However, fracture patterns were different. Group C outperformed all DMLS groups in terms of fracture patterns.This article is protected by copyright. All rights reserved

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Fabrication of Custom Post‐And‐Core Using a Directly Fabricated Silicone Pattern and Digital Workflow

Cited by 10 publications

References 14 publications

A Fully Digital Method to Fabricate Custom Hybrid Ceramic One-Piece Post-and-Core: A Proof of Concept

A Fully Digital Method to Fabricate Custom Hybrid Ceramic One-Piece Post-and-Core: A Proof of Concept

Customized Post and Cores Fabricated with CAD/CAM Technology: A Literature Review

The impact of print orientation on the fracture resistance and failure patterns of additively manufactured cobalt‐chromium post and cores

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