Volumetric and Linear Adaptation of an Indirect Adhesive Restoration: Comparison of Chairside 3D Printing and Milling Techniques

The aim of this study was to the evaluate volumetric and linear adaptation of an indirect adhesive restoration, comparing a novel chairside 3D printer to conventional milling techniques. An intact upper premolar was selected, prepared for an overlay restoration, and replicated. A standardized overla...

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Main Authors: Andrea Baldi, Tommaso Rossi, Ilaria Stura, Allegra Comba, Mauro Fazioni, Chiara Rolando, Giorgio Ferrero, Paola Ceruti, Nicola Scotti
Format: Article
Language:English
Published: MDPI AG 2025-01-01
Series:Applied Sciences
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Online Access:https://www.mdpi.com/2076-3417/15/2/828
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author Andrea Baldi
Tommaso Rossi
Ilaria Stura
Allegra Comba
Mauro Fazioni
Chiara Rolando
Giorgio Ferrero
Paola Ceruti
Nicola Scotti
author_facet Andrea Baldi
Tommaso Rossi
Ilaria Stura
Allegra Comba
Mauro Fazioni
Chiara Rolando
Giorgio Ferrero
Paola Ceruti
Nicola Scotti
author_sort Andrea Baldi
collection DOAJ
description The aim of this study was to the evaluate volumetric and linear adaptation of an indirect adhesive restoration, comparing a novel chairside 3D printer to conventional milling techniques. An intact upper premolar was selected, prepared for an overlay restoration, and replicated. A standardized overlay restoration was designed with CAD software (Cerec inLab CAD SW 4.5.2, Dentsply Sirona, Charlotte, NC, USA), maintaining equal morphology for each sample. Restorations were produced with three CAM processes: chairside 3D printer (D-FAB, DWS, Thiene, Italy), chairside milling unit (Cerec MCXL, Dentsply Sirona, Charlotte, NC, USA), and an industrial milling machine serving as control (Micro 5x, Aman Girrbach, Mäder, Austria). Once cemented, specimens were scanned using micro-computed tomography to assess volumetric, internal, and external adaptation. Data were statistically analyzed with ANOVA and post hoc Bonferroni tests. CAM technique significantly affected volumetric adaptation (<i>p</i> < 0.001), with the chairside 3D printer performing the best and chairside milling unit the worst. Concerning internal adaptation, the chairside milling unit performed significantly worse than the other groups (<i>p</i> < 0.001). No significant differences were reported for external adaptation (<i>p</i> > 0.05). In conclusion, CAM technique influenced volumetric and internal adaptation, with the 3D printer showing optimal volumetric adaptation and chairside milling poor internal adaptation.
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spelling doaj-art-deb1eaaa459840a281d84380e489a0342025-01-24T13:20:58ZengMDPI AGApplied Sciences2076-34172025-01-0115282810.3390/app15020828Volumetric and Linear Adaptation of an Indirect Adhesive Restoration: Comparison of Chairside 3D Printing and Milling TechniquesAndrea Baldi0Tommaso Rossi1Ilaria Stura2Allegra Comba3Mauro Fazioni4Chiara Rolando5Giorgio Ferrero6Paola Ceruti7Nicola Scotti8Dental School, University of Turin, Via Nizza 230, 10100 Turin, ItalyDental School, University of Turin, Via Nizza 230, 10100 Turin, ItalyDepartment of Public Health and Pediatric Sciences, University of Turin, 10100 Turin, ItalyDental School, University of Turin, Via Nizza 230, 10100 Turin, ItalySacro Cuore Hospital Don Calabria Negrar, University of Verona, 37129 Verona, ItalyDental School, University of Turin, Via Nizza 230, 10100 Turin, ItalyDental School, University of Turin, Via Nizza 230, 10100 Turin, ItalyDental School, University of Turin, Via Nizza 230, 10100 Turin, ItalyDental School, University of Turin, Via Nizza 230, 10100 Turin, ItalyThe aim of this study was to the evaluate volumetric and linear adaptation of an indirect adhesive restoration, comparing a novel chairside 3D printer to conventional milling techniques. An intact upper premolar was selected, prepared for an overlay restoration, and replicated. A standardized overlay restoration was designed with CAD software (Cerec inLab CAD SW 4.5.2, Dentsply Sirona, Charlotte, NC, USA), maintaining equal morphology for each sample. Restorations were produced with three CAM processes: chairside 3D printer (D-FAB, DWS, Thiene, Italy), chairside milling unit (Cerec MCXL, Dentsply Sirona, Charlotte, NC, USA), and an industrial milling machine serving as control (Micro 5x, Aman Girrbach, Mäder, Austria). Once cemented, specimens were scanned using micro-computed tomography to assess volumetric, internal, and external adaptation. Data were statistically analyzed with ANOVA and post hoc Bonferroni tests. CAM technique significantly affected volumetric adaptation (<i>p</i> < 0.001), with the chairside 3D printer performing the best and chairside milling unit the worst. Concerning internal adaptation, the chairside milling unit performed significantly worse than the other groups (<i>p</i> < 0.001). No significant differences were reported for external adaptation (<i>p</i> > 0.05). In conclusion, CAM technique influenced volumetric and internal adaptation, with the 3D printer showing optimal volumetric adaptation and chairside milling poor internal adaptation.https://www.mdpi.com/2076-3417/15/2/828chairside3D printingmicro-CTinterfacial adaptationoverlaymilling
spellingShingle Andrea Baldi
Tommaso Rossi
Ilaria Stura
Allegra Comba
Mauro Fazioni
Chiara Rolando
Giorgio Ferrero
Paola Ceruti
Nicola Scotti
Volumetric and Linear Adaptation of an Indirect Adhesive Restoration: Comparison of Chairside 3D Printing and Milling Techniques
Applied Sciences
chairside
3D printing
micro-CT
interfacial adaptation
overlay
milling
title Volumetric and Linear Adaptation of an Indirect Adhesive Restoration: Comparison of Chairside 3D Printing and Milling Techniques
title_full Volumetric and Linear Adaptation of an Indirect Adhesive Restoration: Comparison of Chairside 3D Printing and Milling Techniques
title_fullStr Volumetric and Linear Adaptation of an Indirect Adhesive Restoration: Comparison of Chairside 3D Printing and Milling Techniques
title_full_unstemmed Volumetric and Linear Adaptation of an Indirect Adhesive Restoration: Comparison of Chairside 3D Printing and Milling Techniques
title_short Volumetric and Linear Adaptation of an Indirect Adhesive Restoration: Comparison of Chairside 3D Printing and Milling Techniques
title_sort volumetric and linear adaptation of an indirect adhesive restoration comparison of chairside 3d printing and milling techniques
topic chairside
3D printing
micro-CT
interfacial adaptation
overlay
milling
url https://www.mdpi.com/2076-3417/15/2/828
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