title: Palatal morphology changes in post-stroke patients measured by geometric morphometrics.
abstract: This study aimed to describe longitudinal palatal shape changes in post-stroke patients when compared to a sample of healthy subjects through linear measurements and geometric morphometrics. The 3D palatal scanned models of seven stroke patients having a 1-year post-stroke follow-up were matched with seven control subjects of the same age group (range 50-87 years). Intercanine, intermolar distances and palatal height were measured. 3D images were also analysed through geometric morphometrics to assess changes in the shape of the palate from T0 to T1 (1 year after the stroke). Principal component analysis was used to describe shape morphology changes, and visual colour maps were used to qualitatively assess differences between T0 and T1. No changes were detected nor in linear measures neither in palatal shape in healthy subjects from T0 to T1. The palates of stroke patients showed no linear differences either. However, when visualising shape changes through colour maps, the lateral aspects of the palatal vault were slightly narrower in T1, with respect to T0 in stroke patients. This may be attributed to altered tongue function following the stroke.
authors.affiliation: Department of Orthodontics, University of Geneva, Geneva, Switzerland.
authors.forename: L
authors.identifier: http://orcid.org/0000-0002-8445-8208
authors.initials: L
authors.lastname: Huanca Ghislanzoni
authors.affiliation: Department for Clinical Neurosciences, University of Geneva, Geneva, Switzerland.
authors.forename: B
authors.initials: B
authors.lastname: Leemann
authors.affiliation: Department of Orthodontics, University of Geneva, Geneva, Switzerland.
authors.forename: P
authors.initials: P
authors.lastname: Christou
authors.affiliation: Department of Gerodontology and Removable Prosthodontics, University of Geneva, Geneva, Switzerland.
authors.forename: F
authors.initials: F
authors.lastname: Müller
authors.affiliation: Division of Gerodontology, University of Bern, Bern, Switzerland.
authors.forename: M
authors.identifier: http://orcid.org/0000-0001-9700-5534
authors.initials: M
authors.lastname: Schimmel
authors.affiliation: Department of Orthodontics, University of Geneva, Geneva, Switzerland.
authors.forename: S
authors.initials: S
authors.lastname: Kiliaridis
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D059925:Anatomic Landmarks; D002508:Cephalometry; D003680:Deglutition Disorders / Q000473:pathology / Q000503:physiopathology*; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007091:Image Processing, Computer-Assisted; D021621:Imaging, Three-Dimensional; D008297:Male; D008875:Middle Aged; D010159:Palate / Q000000981:diagnostic imaging* / Q000473:pathology* / Q000503:physiopathology; D020521:Stroke / Q000000981:diagnostic imaging* / Q000473:pathology* / Q000503:physiopathology; D013557:Switzerland; D014059:Tongue / Q000000981:diagnostic imaging* / Q000473:pathology* / Q000503:physiopathology
keywords: adult; biometric analysis; longitudinal; neurosensory functioning; palate; stroke