Effect of printing orientation and resin thickness on flexural strength of direct 3D-printed aligners

Abstract Background Direct 3D-printed aligners served as a breakthrough era in clear aligner fabrication. Yet, there is a scarcity of studies evaluating their mechanical properties. The aim of this study was to compare direct 3D-printed aligners derived from different printing orientations (vertical...

Full description

Bibliographic Details
Published in:	BMC Oral Health
Main Authors:	Ahmed S. Khalil, Abbas R. Zaher
Format:	Article
Language:	English
Published:	BMC 2025-02-01
Subjects:	Clear aligners Direct printed aligners Printing orientation Mechanical properties Flexural strength
Online Access:	https://doi.org/10.1186/s12903-025-05556-8

Similar Items

Biocompatibility of variable thicknesses of a novel directly printed aligner in orthodontics
by: Maximilian Bleilöb, et al.
Published: (2025-01-01)

Effect of Print Orientation and Thermal Aging on the Flexural Strength of Zirconia-Reinforced Three-Dimensional-Printed Restorative Resin Materials
by: Yunus Emre Özden, et al.
Published: (2025-05-01)

A Questionnaire-based Survey of Postgraduate Students on Awareness about Direct Printed Aligners
by: Vishwa Sejani, et al.
Published: (2024-08-01)

Force Expressed by 3D-Printed Aligners with Different Thickness and Design Compared to Thermoformed Aligners: An in Vitro Study
by: Francesca Cremonini, et al.
Published: (2025-03-01)

Forces and moments generated during extrusion of a maxillary central incisor with clear aligners: an in vitro study
by: Abraham McKay, et al.
Published: (2023-07-01)

An In Vitro Comparison Study Regarding Retention Force Expressed by Thermoformed Aligners and 3D-Printed Aligners with Different Thickness and Design
by: Francesca Cremonini, et al.
Published: (2025-01-01)

Effect of the Printing Angle on Flexural Strength, Microhardness, and Surface Roughness of Three-Dimensionally Printed Resin for Provisional Restorations
by: Nádia Vieira Queiroz, et al.
Published: (2024-11-01)

An Update on 3D-printed Orthodontic Aligners
by: Nazleen Valerie Vas, et al.
Published: (2024-04-01)

Integrated manufacturing of direct 3D-printed clear aligners
by: Abirami Rajasekaran, et al.
Published: (2023-01-01)

Color Variation in 3D-Printed Orthodontic Aligners as a Compliance Indicator: A Prospective Pilot Study
by: Francesca Cremonini, et al.
Published: (2025-06-01)

Evaluation of the effects of temperature and centrifugation time on elimination of uncured resin from 3D-printed dental aligners
by: Ji-Eun Kim, et al.
Published: (2024-07-01)

Impact of various cleaning protocols on the physical and aesthetic properties of 3D-printed orthodontic aligners
by: Luka Šimunović, et al.
Published: (2025-05-01)

Finite element analysis of the mechanical behavior of 3D printed orthodontic attachments used in aligner treatment
by: Riham Nagib, et al.
Published: (2024-06-01)

Directly Printed Aligner: Aligning with the Future
by: Nearchos C. Panayi
Published: (2023-03-01)

The influence of printing orientation on the flexural strength of PA 12 specimens produced by SLS
by: Jevtić Ivana, et al.
Published: (2024-01-01)

Machine learning-aided lattice optimization for ultra-lightweight 3D-printed aligners
by: Poom Narongdej, et al.
Published: (2025-06-01)

In-house Aligners: Why We Should Fabricate Aligners in Our Clinics?
by: Murat Tozlu, et al.
Published: (2021-09-01)

Accuracy (trueness and precision) of 3D printed orthodontic models finalized to clear aligners production, testing crowded and spaced dentition
by: Vincenzo Grassia, et al.
Published: (2023-06-01)

Prospects for 3D-printing of clear aligners—a narrative review
by: Chenyang Niu, et al.
Published: (2024-07-01)

Influence of Printing Angulation on the Flexural Strength of 3D Printed Resins: An In Vitro Study
by: Alessio Casucci, et al.
Published: (2024-11-01)

Erratum: Prospects for 3D-printing of clear aligners—a narrative review
by: Frontiers Production Office
Published: (2024-09-01)

In Vitro Flexural Testing of Clear Aligner Materials: A Scoping Review of Methods, Results, and Clinical Relevance
by: Gavin Nugent, et al.
Published: (2025-07-01)

Accuracy of Tooth Movement Using in-Office-Produced 3D-Printed Aligners
by: M. Aarti Rajambigai, et al.
Published: (2025-09-01)

A study on the compressive strength of three-dimensional direct printing aligner material for specific designing of clear aligners
by: Byeong Gu Bae, et al.
Published: (2025-01-01)

Cytotoxicity of Printed Aligners: A Systematic Review
by: Mauro Lorusso, et al.
Published: (2025-06-01)

Effect of Model Body Type and Print Angle on the Accuracy of 3D-Printed Orthodontic Models
by: Stefan Lohfeld, et al.
Published: (2024-04-01)

Comparison of the flexural strength of printed and milled denture base materials
by: Shatha Alshali, et al.
Published: (2024-08-01)

Analysis of Flexural Strength and Brittleness of a Polyjet 3D‐Printed Denture Base Polymer
by: Gregory W. Bennett, et al.
Published: (2025-10-01)

The flexural strength of 3D-printed provisional restorations fabricated with different resins: a systematic review and meta-analysis
by: Ravinder S. Saini, et al.
Published: (2024-01-01)

A Comparison Between the Expansion Force Exerted by Thermo-Printed Aligners and 3D Printed Aligners: An In Vitro Study
by: Samuele Avolese, et al.
Published: (2025-08-01)

Biofilm formation of Streptococcus mutans, Streptococcus sanguinis, Staphylococcus epidermidis, Staphylococcus aureus, Lactobacillus casei, and Candida Albicans on 5 thermoform and 3D printed orthodontic clear aligner and retainer materials at 3 time points: an in vitro study
by: Mehrnaz Moradinezhad, et al.
Published: (2024-09-01)

Printing Structurally Anisotropic Biocompatible Fibrillar Hydrogel for Guided Cell Alignment
by: Zhengkun Chen, et al.
Published: (2022-10-01)

Advances in orthodontic clear aligner materials
by: Yashodhan M. Bichu, et al.
Published: (2023-04-01)

Effect of thermal cycling on the flexural strength of 3-D printed, CAD/CAM milled and heat-polymerized denture base materials
by: Tuğba Temizci, et al.
Published: (2024-03-01)

Correcting Multiple Spaces in Adult Patients With Precise Tooth Movement Control Using In‐House Clear Aligners
by: Nguyen Van Tam, et al.
Published: (2025-04-01)

Influence of print speed and nozzle diameter on the fiber alignment in 3D printed ultra-high-performance concrete
by: Qamar Shahzad, et al.
Published: (2024-03-01)

Flexural strength and impact strength of heat-cured acrylic and 3D printed denture base resins- A comparative in vitro study
by: Mayank Chhabra, et al.
Published: (2022-01-01)

Highly Polarized Fluorescent Film Based on Aligned Quantum Rods by Contact Ink-Jet Printing Method
by: Ziming Zhou, et al.
Published: (2019-01-01)

3D Printed Orthodontic Aligners—A Scoping Review
by: Rebecca Jungbauer, et al.
Published: (2024-11-01)

The effectiveness of orthodontic treatment with clear aligners in different thicknesses
by: Saniye Merve Cengiz, et al.
Published: (2025-02-01)