Cement thickness of post and cores fabricated by modern digital technology

Kanduti, Domen; Kopač, Igor

doi:10.17222/mit.2020.136

Cited by 4 publications

(6 citation statements)

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“…Also increase. Under the new concept of protection and inheritance, modern digital technology is used to record, inherit, promote and sell intangible cultural heritage projects [3]. The development of modern digital technology provides a broader space for the collection, preservation, display and popularization of intangible cultural heritage gongs and drums [4].…”

Section: Introductionmentioning

confidence: 99%

RETRACTED ARTICLE: VR system application in the inheritance of intangible cultural heritage gongs and drums based on video simulation

Chen

2023

Soft Comput

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In recent years, with the rapid popularization of Internet technology and the development and development of a large number of smart terminal devices for the Internet of Things, Internet of Things systems and devices have become more and more popular in people's daily lives, and the types and numbers of smart Internet of Things applications are constantly increasing. In VR, more and more input devices and more and more data and information directly affect the depth of embedding. In the era of big data, data storage is overvalued, and a reasonable solution to data storage strategies is needed. When sending video simulation applications, the emergence of VR technology has played a huge role in the inheritance of intangible cultural heritage. Through immersive virtual reality or interactive virtual reality, it has injected new blood of the times into excellent traditional culture and has become an intangible help. The list of intangible cultural heritage protection includes many traditional folk music with unique local characteristics. The gong and drum music in a certain place is one of them. This thesis analyzes the problems in depth from the development status of gongs and drums in a certain place and the problems faced in the later period, and explores executable inheritance and protection strategies.

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Section: Introductionmentioning

confidence: 99%

RETRACTED ARTICLE: VR system application in the inheritance of intangible cultural heritage gongs and drums based on video simulation

Chen

2023

Soft Comput

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“…The conventional method of accuracy measurements for post and core included using micro computed tomogram scanning, 14 cement thickness measurement, 15 and periapical radiograph 7 . These techniques are used for distance measurement which can determine accuracy in the area of interest.…”

Section: Discussionmentioning

confidence: 99%

“…14 Moreover, a study by Kanduti et al found that using scan post (3Shape) and selective laser melting to fabricate digital posts showed comparable results with direct technique even though they found more cement thickness on the middle and apical part of the posts. 15 There are two main digital fabrication techniques in dentistry, milling and 3D printing. This study examined the accuracy of the two fabrication techniques when the resin patterns were created.…”

Section: Discussionmentioning

confidence: 99%

“…Many factors have been found to affect the accuracy of post and core fabrication, including root canal anatomy, fabrication technique, material used to fabricate the post and core, casting technique, and the experience of the dentist and lab technician. 14 The conventional method of accuracy measurements for post and core included using micro computed tomogram scanning, 14 cement thickness measurement, 15 and periapical radiograph. 7 These techniques are used for distance measurement which can determine accuracy in the area of interest.…”

Section: Discussionmentioning

confidence: 99%

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The Accuracy of Post and Core Fabricated with Digital Technology

Piangsuk

Dawson

El‐Kerdani

et al. 2022

Journal of Prosthodontics

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To compare the accuracy of post and cores created with three different fabricating techniques: direct conventional, machine milling, and three-dimensional (3D) printing. Materials and methods:Thirteen extracted single root central incisors were selected. Root canal treatment and tooth preparation for crown were performed on all teeth. Post space preparation of 11 mm was created using prefabricated fiber post drill to standardize post space width and length. Root canal impressions were performed on all teeth using polyvinyl siloxane impression material. Each impression was then three dimensionally scanned using an extraoral lab scanner. The scanned impressions were used to design digital files of post and cores with 3Shape CAD software. The digitally designed post and cores were used to fabricate 3D printed and milled post and core resin patterns. The same teeth were used to fabricate post and core with conventional technique (direct duplication of root canal with resin pattern). All posts were then scanned before being invested and then cast using base metal educational alloy. The metal post and cores were tried in with sample teeth and manually adjusted until found to be clinically acceptable. The post and cores were scanned in different stages to perform digital volume measurement using Geomagic Control software to determine accuracy. Pairwise comparisons were accomplished using exact version of the sign test (α = 0.05). Results: These three techniques of post and core fabrication showed different results in the various stages of fabrication. The accuracy of 3D printed resin pattern (26.89 ±11.09 mm 3 ) was found to be inferior compare to milled resin pattern (28.20 ±11.41 mm 3 , p = 0.0002). However, dimensional stability of the 3D printed resin pattern before and after casting (0.56 ±0.95 mm 3 ) was found to be superior to milled resin pattern (0.79 ±0.89 mm 3 ) and direct resin pattern (2.51 ±1.38 mm 3 , p = 0.00002). All three techniques showed significant volume reduction after adjustment (p = 0.0002). In the final stage, the adjusted metal post and core fabricated with three different techniques showed no statistical different in accuracy (p = 0.15). Conclusion: Digitally fabricated post and cores have the same degree of accuracy as those fabricated using the gold standard direct conventional post and core technique. K E Y W O R D S3D printing, 3D milling, accuracy of post and core, customized post and core, post and core

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“…There are multiple techniques to measure the accuracy of post and core including using periapical radiograph, 7 cement thickness measurement, 14 and microcomputed tomography scanning 15 . These methods aim to measure space between root canal and post at the area of interest.…”

Section: Discussionmentioning

confidence: 99%

The accuracy comparison of 3D‐printed post and core using castable resin and castable wax resin

Piangsuk

Henprasert

Boonsiriphant

et al. 2022

Journal of Prosthodontics

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The purpose of this research was to compare the accuracy of threedimensionally (3D) printed post and core fabricated with two different materials: reinforced wax and castable resin. Materials and methods:Fifteen extracted single root central incisors were selected. Root canal treatment and tooth preparation for crown were performed on all teeth. Eleven millimeters post space was created with standardized prefabricated fiber post drill. Polyvinylsiloxane impression material was used for root canal impressions. Each impression was then 3D scanned using an extraoral scanner and cast posts and cores were designed using 3Shape software. The digitally designed post and cores were 3D printed with two different materials: castable wax resin and castable resin. The castable resin patterns were scanned before and after complete polymerization. The wax patterns were also scanned. Digital volumetric measurement using Geomagic® Control X™ software was performed to determine accuracy. Results: The printed post and core had reduced volume (16.09 ± 3.839 mm 3 ) compared to the digital design (17.828 ± 3.904, p < 0.05). Before complete polymerization, the accuracy of 3D printed resin pattern (16.464 ± 3.017) was found to be superior to post and core printed with wax (16.193 ± 3.018, p < 0.05). However, no volume difference was found between completely polymerized resin (16.09 ± 3.839) and wax (16.044 ± 3.834, p = 1). Conclusion: 3D printed post and core showed significant volume shrinkage from the digital files used to create them. However, different materials had no effect on the accuracy of 3D printed post and core. K E Y W O R D S3D printing, accuracy of post and core, customized post and core, post and core 540

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Cement thickness of post and cores fabricated by modern digital technology

Cited by 4 publications

References 0 publications

RETRACTED ARTICLE: VR system application in the inheritance of intangible cultural heritage gongs and drums based on video simulation

RETRACTED ARTICLE: VR system application in the inheritance of intangible cultural heritage gongs and drums based on video simulation

The Accuracy of Post and Core Fabricated with Digital Technology

The accuracy comparison of 3D‐printed post and core using castable resin and castable wax resin

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