Evidence map›Paper›PMID 41452390›Full record

ArticleClinical oral investigations2025

Effect of print orientation of 3D-printed aligner templates on the volumetric accuracy of transferred composite attachments: an in vitro study.

Samuele Avolese, Simone Parrini, Danila Lava, Andrea Tancredi Lugas, Cristina Bignardi, Mara Terzini, Danila Muraca, Nicola Scotti, Fabrizio Sanna

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Article in Clinical oral investigations, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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1 · What the graph read from it

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2 · The registry

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4 · The record

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5 · Who and what money

Authors and funding

9 authors.

Samuele AvoleseDepartment of Mechanical and Aerospace Engineering, Polytechnic University of Turin, Torino, Italy. samuele.avolese@polito.it.
Simone ParriniSpecialization School in Orthodontics, Department of Surgical Sciences, Dental School of the University of Torino, Torino, Italy.
Danila LavaSpecialization School in Orthodontics, Department of Surgical Sciences, Dental School of the University of Torino, Torino, Italy.
Andrea Tancredi LugasPolito BIO Med Lab, Polytechnic University of Turin, Torino, Italy.
Cristina BignardiDepartment of Mechanical and Aerospace Engineering, Polytechnic University of Turin, Torino, Italy.
Mara TerziniDepartment of Mechanical and Aerospace Engineering, Polytechnic University of Turin, Torino, Italy.
Danila MuracaSpecialization School in Orthodontics, Department of Surgical Sciences, Dental School of the University of Torino, Torino, Italy.
Nicola ScottiDepartment of Surgical Sciences, Dental School, University of Torino, Torino, Italy.
Fabrizio SannaDepartment of Mechanical and Aerospace Engineering, Polytechnic University of Turin, Torino, Italy.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectivesThis study aimed to evaluate the effect of print orientation on the dimensional accuracy of attachments in directly 3D-printed orthodontic aligners. MATERIALS AND

methodsFor n = 10 patients, 34 single-tooth aligner segments were digitally designed (17 for tooth 1.1 and 17 for tooth 1.6) incorporating a planned 3 mm horizontal rectangular buccal attachment. These aligners were printed in TC-85 DAC resin (Graphy Inc, Seoul, Korea) at different inclinations (8 in anterotation and 8 in postrotation, at 10° intervals from the horizontal) and used as templates to transfer attachments onto corresponding 3D-printed dental models. This models with transferred attachments were scanned with a laboratory scanner and superimposed onto the attachment surface of the master digital file. Percentage volume deviations of the transferred versus planned attachment were quantified using Geomagic Control software (v.2020.1.1, ©2020 3D Systems, Inc., Rock Hill, SC) and analysed with an unpaired two-tailed t-test (P < 0.05).

resultsFor tooth 1.1, the mean volumetric deviation of transferred attachments was significantly lower in postrotation orientations (88.87% ± 4.13) than in anterotation (69.01% ± 4.33), indicating that positioning the template with the vestibular surface facing the build platform improves accuracy (p < 0.0001). For tooth 1.6, no statistically significant difference was found (p = 0.0992; 78.16% ± 2.26 vs. 79.99% ± 1.87).

conclusionsComposite attachments transferred with 3D-printed templates exhibited a volumetric alteration respect the master digital file and print orientation particularly affects anterior teeth's attachments. CLINICAL RELEVANCE: Aligners orientation during 3D-printing is crucial to ensure accurate attachments transfer, especially anterior regions.

Indexed as

Composite ResinsOrthodontic Appliance DesignPrinting, Three-DimensionalTooth Movement TechniquesComputer-Aided DesignHumansIn Vitro TechniquesModels, DentalComposite Resins3-dimensional printingAttachmentClear aligner therapyPrint orientation

Identifiers

PMID41452390

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.