ArticleOrthodontics & craniofacial research2024
Effect of attachment configuration and trim line design on the force system of orthodontic aligners: A finite element study on the upper central incisor.
Article in Orthodontics & craniofacial research, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers, 1 of them a synthesis that pooled it.
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Who cites it
14 citing papers in PubMed, 1 synthesis or guideline pooled it.
- The biomechanical effects of clear aligner trimline designs and extensions on orthodontic tooth movement: a systematic review.BMC oral health · 2024Pooled it
- Comparative numerical finite element analysis of tooth-implant- versus implant-implant-supported three-unit fixed prostheses under oblique loading.Odontology · 2026Article
- Effects of Attachment Placement on Palatal Root Torque Control of Maxillary Incisors with Clear Aligners: A Finite Element Study.Journal of clinical medicine · 2026Article
- Effect of attachment design and light-curing duration on shear bond strength in clear aligners.BMC oral health · 2026Article
- Effect of different attachment configurations and skeletal anchorage force application points on canines during distalization of maxillary second molars with clear aligners: a finite element study.Dental press journal of orthodontics · 2026Article
- Measurement of Aligner Thickness and Gap Width in Two Types of Clear Aligner Sheets Manufactured Using Two Different Thermoforming Machines - A Nano-CT Pilot Study.Turkish journal of orthodontics · 2025Article
- Advances in clear aligner therapy: comparative evaluation of the optical properties and bacterial adhesion of 3D direct-printed and thermoformed aligners.Progress in orthodontics · 2025Article
- Biomechanical Performance of Implant-Tooth-Supported Prostheses: A Numerical 3D Finite Element Analysis.International dental journal · 2025Article
- Biomechanical effects of aligner trimline design and intrusion protocol on mandibular anterior teeth: a finite element study.BMC oral health · 2025Article
- Mode of failure and finite element analysis of custom-made PEEK post-core (milled and pressed).Odontology · 2025Article
- Preclinical evaluation of 3D-Printed orthodontic aligners using an electro-typodont model.Frontiers in bioengineering and biotechnology · 2025Article
- Finite element analysis of clear aligner with overhanging attachments and extended gingival coverage for interdental space closure.Frontiers in bioengineering and biotechnology · 2025Article
- Effect of attachment configuration and trim line design on the force system of orthodontic aligners: A finite element study on the upper central incisor.Orthodontics & craniofacial research · 2024Article
- Finite element analysis of the mechanical behavior of 3D printed orthodontic attachments used in aligner treatment.Scientific reports · 2024Article
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Authors and funding
7 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
objectivesTo use the finite element method (FEM) to investigate the effect of various attachment configurations and trimming line designs of orthodontic aligners on their biomechanical performance.
methodA 3D upper jaw model was imported into 3D design software. The upper right central incisor tooth (Tooth 11) was made mobile, and its periodontal ligament (PDL) and bone structures were designed. Aligners were modelled with three distinct attachment configurations: No attachment, rectangular horizontal, rectangular vertical, and two trimming line designs; scalloped and straight extended, with a homogeneous thickness of 0.6 mm. These models were then imported into an FE software. Simulations were conducted for three different movements, including facial translation, distalization, and extrusion.
resultsForces were recorded at 1.3-2.6 N during facial translation, 1.4-5.9 N in distalization, and 0.0-2.0 N in extrusion. The straight extended trimming line consistently generated higher forces than the scalloped design. Attachments had no significant impact on force components during facial translation but were more effective in distalization and extrusion. The combination of a straight extended trimming line with horizontal attachments exhibited the least stresses at the apical third during distalization, and the highest stresses during extrusion, suggesting superior retention.
conclusionsRectangular attachments offer limited benefits in facial translation, but horizontal rectangular attachments can intensify load in distalization and are crucial for force generation in extrusion. Horizontal attachments are preferred over vertical options. Additionally, the straight extended trim line enhances control of tooth movement and can replace attachments in certain cases. CLINICAL RELEVANCE: These findings provide biomechanical evidence and an optimal protocol to guide clinical practice in planning diverse teeth movements. The emphasis is on the influence of attachment utilization and the specific design of aligner trimming lines to enhance control over tooth movement.
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