Design and manufacturing of patient-specific orthodontic appliances by computer-aided engineering techniques
Orthodontic treatments are usually performed using fixed brackets or removable oral appliances, which are traditionally made from alginate impressions and wax registrations. Among removable devices, eruption guidance appliances are used for early orthodontic treatments in order to intercept and prev...
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Published in | Proceedings of the Institution of Mechanical Engineers. Part H, Journal of engineering in medicine Vol. 232; no. 1; p. 54 |
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Main Authors | , , , |
Format | Journal Article |
Language | English |
Published |
England
01.01.2018
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Subjects | |
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Abstract | Orthodontic treatments are usually performed using fixed brackets or removable oral appliances, which are traditionally made from alginate impressions and wax registrations. Among removable devices, eruption guidance appliances are used for early orthodontic treatments in order to intercept and prevent malocclusion problems. Commercially available eruption guidance appliances, however, are symmetric devices produced using a few standard sizes. For this reason, they are not able to meet all the specific patient's needs since the actual dental anatomies present various geometries and asymmetric conditions. In this article, a computer-aided design-based methodology for the design and manufacturing of a patient-specific eruption guidance appliances is presented. The proposed approach is based on the digitalization of several steps of the overall process: from the digital reconstruction of patients' anatomies to the manufacturing of customized appliances. A finite element model has been developed to evaluate the temporomandibular joint disks stress level caused by using symmetric eruption guidance appliances with different teeth misalignment conditions. The developed model can then be used to guide the design of a patient-specific appliance with the aim at reducing the patient discomfort. At this purpose, two different customization levels are proposed in order to face both arches and single tooth misalignment issues. A low-cost manufacturing process, based on an additive manufacturing technique, is finally presented and discussed. |
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AbstractList | Orthodontic treatments are usually performed using fixed brackets or removable oral appliances, which are traditionally made from alginate impressions and wax registrations. Among removable devices, eruption guidance appliances are used for early orthodontic treatments in order to intercept and prevent malocclusion problems. Commercially available eruption guidance appliances, however, are symmetric devices produced using a few standard sizes. For this reason, they are not able to meet all the specific patient's needs since the actual dental anatomies present various geometries and asymmetric conditions. In this article, a computer-aided design-based methodology for the design and manufacturing of a patient-specific eruption guidance appliances is presented. The proposed approach is based on the digitalization of several steps of the overall process: from the digital reconstruction of patients' anatomies to the manufacturing of customized appliances. A finite element model has been developed to evaluate the temporomandibular joint disks stress level caused by using symmetric eruption guidance appliances with different teeth misalignment conditions. The developed model can then be used to guide the design of a patient-specific appliance with the aim at reducing the patient discomfort. At this purpose, two different customization levels are proposed in order to face both arches and single tooth misalignment issues. A low-cost manufacturing process, based on an additive manufacturing technique, is finally presented and discussed. |
Author | Neri, Paolo Paoli, Alessandro Razionale, Armando Viviano Barone, Sandro |
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BackLink | https://www.ncbi.nlm.nih.gov/pubmed/29160155$$D View this record in MEDLINE/PubMed |
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CitedBy_id | crossref_primary_10_1177_0954411918788104 crossref_primary_10_1016_j_ajodo_2019_07_009 crossref_primary_10_1590_pboci_2022_027 crossref_primary_10_3390_s20226584 crossref_primary_10_1016_j_promfg_2020_01_187 crossref_primary_10_1177_2041731419845849 crossref_primary_10_3390_polym13081294 crossref_primary_10_4103_digm_digm_36_22 crossref_primary_10_1016_j_jobcr_2019_04_004 crossref_primary_10_1007_s00170_021_08135_7 crossref_primary_10_1016_j_dental_2024_02_006 crossref_primary_10_1177_0954411920960548 |
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