Bioceramics in Endodontics

Iliescu, Alexandru Andrei; Perlea, Paula; Tulus, Gabriel; Iliescu, Mihaela Georgiana; Gheorghiu, Irina-Maria; Manolea, Horia Octavian

doi:10.1002/9781119372097.ch10

Bioceramics and Biocomposites 2019

DOI: 10.1002/9781119372097.ch10

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Bioceramics in Endodontics

Alexandru Andrei Iliescu

Paula Perlea

Gabriel Tulus³

et al.

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2020

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Cited by 1 publication

(2 citation statements)

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“…In addition to more stable dimensional properties of PMMA interim crowns and bridges produced by CAD/CAM procedures, the manufacturing of these fixed prostheses is also available in dental office. The modern chair-side CAD/CAM technological flow allow in-office fabrication due to the new performing and compact milling machines and 3D printers [11][12][13][14][15].…”

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confidence: 99%

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Additive vs. Subtractive CAD/CAM Procedures in Manufacturing of the PMMA Interim Dental Crowns. A Comparative in vitro Study of Internal Fit

Earar¹,

Popa²,

Iliescu³

et al. 2020

Rev. Chim.

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CAD/CAM procedures are increasingly used to the manufacturing of 3D-designed PMMA interim dental crowns. The aim of this in vitro study was to compare the internal fit of interim PMMA crowns fabricated by subtractive versus additive CAD/CAM procedures. Starting from a Co-Cr CAD/CAM master abutment model, 20 standardized dental models of dental stone were done by double impression technique. Subsequently two groups of interim PMMA interim crowns, each of them having 10 specimens, were CAM obtained either by milling or 3D printing, using Exocad software package, milling machine Rolland DWX-50, and the 3D printer MoonRay S 100 respectively. An electronic digital caliper Powerfix Profi+ was used for measurements of the chrome cobalt abutment and crowns inner diameter in 4 directions (mesial-distal gingival, buccal-lingual gingival, mesial-distal occlusal, and buccal-lingual occlusal). The null hypothesis that the internal dimensional accuracy of interim PMMA crowns fabricated by DLP additive method would not be different compared to those obtained by milling procedure was rejected since the printed PMMA interim crowns were more accurate. This study concluded that the milled PMMA interim crowns show larger internal dimensional variations than the 3D printed ones. However, the fit variation among interim crowns fabricated by both procedures was statistically non significant, so that both CAM technologies may be equally used in manufacturing process.

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confidence: 99%

“…It allows to manufacturing more complex and smooth prosthetic structures than the milling method and is less material consuming. Presently the additive techniques mostly used to produce interim PMMA crowns are DLP (digital light processing) and PolyJet [7,[14][15][16]18].…”

mentioning

confidence: 99%

Additive vs. Subtractive CAD/CAM Procedures in Manufacturing of the PMMA Interim Dental Crowns. A Comparative in vitro Study of Internal Fit

Earar¹,

Popa²,

Iliescu³

et al. 2020

Rev. Chim.

View full text Add to dashboard Cite

show abstract

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Bioceramics in Endodontics

Cited by 1 publication

References 148 publications

Additive vs. Subtractive CAD/CAM Procedures in Manufacturing of the PMMA Interim Dental Crowns. A Comparative in vitro Study of Internal Fit

Additive vs. Subtractive CAD/CAM Procedures in Manufacturing of the PMMA Interim Dental Crowns. A Comparative in vitro Study of Internal Fit

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