Factors affecting expansion predictability of clear aligner treatment

ObjectivesTo determine the clinical factors associated with expansion predictability using clear aligners.Materials and methodsPretreatment, prediction in the first approved ClinCheck, and pretreatment of the first refinement digital casts were recovered from Invisalign's ClinCheck software for...

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Autores: Rosa Gay, María Cristina de la, Valmaseda Castellón, Eduardo, Figueiredo, Rui, Camps Font, Octavi
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2025
País:España
Institución:Universidad de Barcelona
Repositorio:Dipòsit Digital de la UB
OAI Identifier:oai:diposit.ub.edu:2445/221752
Acceso en línea:https://hdl.handle.net/2445/221752
Access Level:acceso abierto
Palabra clave:Odontologia
Amalgames dentals
Aparells d'ortodòncia
Dentistry
Dental amalgams
Orthodontic appliances
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spelling Factors affecting expansion predictability of clear aligner treatmentRosa Gay, María Cristina de laValmaseda Castellón, EduardoFigueiredo, RuiCamps Font, OctaviOdontologiaAmalgames dentalsAparells d'ortodònciaDentistryDental amalgamsOrthodontic appliancesObjectivesTo determine the clinical factors associated with expansion predictability using clear aligners.Materials and methodsPretreatment, prediction in the first approved ClinCheck, and pretreatment of the first refinement digital casts were recovered from Invisalign's ClinCheck software for 98 patients with permanent dentition. Arch width measurements were collected in the ClinCheck arch width table for canines, first and second premolars, and first molars. Expansion predictability was calculated by subtracting the expansion achieved from that predicted. Expansion predictors were explored using univariate and multivariate generalized linear mixed models (GLMM).ResultsNinety-eight patients (mean age 48.7 years, standard deviation [SD] = 12.5 years) with 1440 eligible teeth (720 on each side) were assessed. The absolute difference between planned and achieved expansion was 0.92 mm (95% confidence interval [CI]: 0.86-0.99). While 72.2% of the measurements showed some degree of underexpansion, 79.3% of all overcorrections appeared in the mandible. According to the univariate analysis, the following variables were associated with expansion predictability: sex, arch, presence of posterior crossbite, absence of extractions, placement of attachments, absence of stripping, tooth type and higher predicted expansion. Those identified by GLMM were arch, tooth type, amount of predicted expansion and posterior crossbite.ConclusionsExpansion with Invisalign aligners is more reliable in the lower jaw and in the canine region. Cases with large, planned expansions or initial posterior crossbites (unilateral or bilateral) seem less predictable.Clinical relevanceThe risk of not achieving the planned expansion is greater in the maxilla, posterior teeth, and when crossbite is present.Springer Science and Business Media LLC2025info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://hdl.handle.net/2445/221752Articles publicats en revistes (Odontoestomatologia)reponame:Dipòsit Digital de la UBinstname:Universidad de BarcelonaInglésReproducció del document publicat a: https://doi.org/10.1007/s00784-025-06328-yClinical Oral Investigations, 2025, vol. 29, num. 5https://doi.org/10.1007/s00784-025-06328-ycc-by (c) Rosa Gay et al., 2025http://creativecommons.org/licenses/by/3.0/es/info:eu-repo/semantics/openAccessoai:diposit.ub.edu:2445/2217522026-05-27T06:46:51Z
dc.title.none.fl_str_mv Factors affecting expansion predictability of clear aligner treatment
title Factors affecting expansion predictability of clear aligner treatment
spellingShingle Factors affecting expansion predictability of clear aligner treatment
Rosa Gay, María Cristina de la
Odontologia
Amalgames dentals
Aparells d'ortodòncia
Dentistry
Dental amalgams
Orthodontic appliances
title_short Factors affecting expansion predictability of clear aligner treatment
title_full Factors affecting expansion predictability of clear aligner treatment
title_fullStr Factors affecting expansion predictability of clear aligner treatment
title_full_unstemmed Factors affecting expansion predictability of clear aligner treatment
title_sort Factors affecting expansion predictability of clear aligner treatment
dc.creator.none.fl_str_mv Rosa Gay, María Cristina de la
Valmaseda Castellón, Eduardo
Figueiredo, Rui
Camps Font, Octavi
author Rosa Gay, María Cristina de la
author_facet Rosa Gay, María Cristina de la
Valmaseda Castellón, Eduardo
Figueiredo, Rui
Camps Font, Octavi
author_role author
author2 Valmaseda Castellón, Eduardo
Figueiredo, Rui
Camps Font, Octavi
author2_role author
author
author
dc.subject.none.fl_str_mv Odontologia
Amalgames dentals
Aparells d'ortodòncia
Dentistry
Dental amalgams
Orthodontic appliances
topic Odontologia
Amalgames dentals
Aparells d'ortodòncia
Dentistry
Dental amalgams
Orthodontic appliances
description ObjectivesTo determine the clinical factors associated with expansion predictability using clear aligners.Materials and methodsPretreatment, prediction in the first approved ClinCheck, and pretreatment of the first refinement digital casts were recovered from Invisalign's ClinCheck software for 98 patients with permanent dentition. Arch width measurements were collected in the ClinCheck arch width table for canines, first and second premolars, and first molars. Expansion predictability was calculated by subtracting the expansion achieved from that predicted. Expansion predictors were explored using univariate and multivariate generalized linear mixed models (GLMM).ResultsNinety-eight patients (mean age 48.7 years, standard deviation [SD] = 12.5 years) with 1440 eligible teeth (720 on each side) were assessed. The absolute difference between planned and achieved expansion was 0.92 mm (95% confidence interval [CI]: 0.86-0.99). While 72.2% of the measurements showed some degree of underexpansion, 79.3% of all overcorrections appeared in the mandible. According to the univariate analysis, the following variables were associated with expansion predictability: sex, arch, presence of posterior crossbite, absence of extractions, placement of attachments, absence of stripping, tooth type and higher predicted expansion. Those identified by GLMM were arch, tooth type, amount of predicted expansion and posterior crossbite.ConclusionsExpansion with Invisalign aligners is more reliable in the lower jaw and in the canine region. Cases with large, planned expansions or initial posterior crossbites (unilateral or bilateral) seem less predictable.Clinical relevanceThe risk of not achieving the planned expansion is greater in the maxilla, posterior teeth, and when crossbite is present.
publishDate 2025
dc.date.none.fl_str_mv 2025
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv https://hdl.handle.net/2445/221752
url https://hdl.handle.net/2445/221752
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Reproducció del document publicat a: https://doi.org/10.1007/s00784-025-06328-y
Clinical Oral Investigations, 2025, vol. 29, num. 5
https://doi.org/10.1007/s00784-025-06328-y
dc.rights.none.fl_str_mv cc-by (c) Rosa Gay et al., 2025
http://creativecommons.org/licenses/by/3.0/es/
info:eu-repo/semantics/openAccess
rights_invalid_str_mv cc-by (c) Rosa Gay et al., 2025
http://creativecommons.org/licenses/by/3.0/es/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Springer Science and Business Media LLC
publisher.none.fl_str_mv Springer Science and Business Media LLC
dc.source.none.fl_str_mv Articles publicats en revistes (Odontoestomatologia)
reponame:Dipòsit Digital de la UB
instname:Universidad de Barcelona
instname_str Universidad de Barcelona
reponame_str Dipòsit Digital de la UB
collection Dipòsit Digital de la UB
repository.name.fl_str_mv
repository.mail.fl_str_mv
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