Cone beam computed tomographic evaluation of the changes in condylar position in growing patients with unilateral posterior crossbite undergoing rapid maxillary expansion followed by fixed orthodontic therapy.

Autor: Wang Z; Department of Orthodontics and Dentofacial Orthopedics, Eastman Institute for Oral Health, University of Rochester, 625 Elmwood Ave, Rochester, NY, 14620, USA., Spoon ME; Department of Orthodontics and Dentofacial Orthopedics, Eastman Institute for Oral Health, University of Rochester, 625 Elmwood Ave, Rochester, NY, 14620, USA., Khan J; Orofacial Pain and TMJ Disorders, Eastman Institute for Oral Health, University of Rochester, Rochester, NY, USA., Barmak AB; Department of Dentistry, Eastman Institute for Oral Health, University of Rochester, Rochester, NY, USA., Rossouw PE; Department of Orthodontics and Dentofacial Orthopedics, Eastman Institute for Oral Health, University of Rochester, 625 Elmwood Ave, Rochester, NY, 14620, USA., Michelogiannakis D; Department of Orthodontics and Dentofacial Orthopedics, Eastman Institute for Oral Health, University of Rochester, 625 Elmwood Ave, Rochester, NY, 14620, USA. Dimitrios_Michelogiannakis@URMC.Rochester.edu.
Jazyk: angličtina
Zdroj: European archives of paediatric dentistry : official journal of the European Academy of Paediatric Dentistry [Eur Arch Paediatr Dent] 2021 Oct; Vol. 22 (5), pp. 959-967. Date of Electronic Publication: 2021 May 05.
DOI: 10.1007/s40368-021-00628-z
Abstrakt: Purpose: This study aimed at assessing changes in condylar position (CP) in growing patients with unilateral posterior crossbite (UPC) undergoing rapid maxillary expansion (RME) followed by fixed orthodontic treatment (FOT) (experimental-group); and growing patients without posterior crossbite (PC) treated with FOT alone (control-group).
Methods: Cone beam computed tomography (CBCT) images were obtained before treatment (T0), 6 months after RME (T1) and after FOT (T2) for the experimental-group (n = 19); and at T0 and T2 for the control-group (n = 22). Condylar position-related measurements including the anterior joint space (AJS), superior joint space (SJS), posterior joint space (PJS), lateral position of condyle (LC) and condylar angle (CA) were measured. Non-parametric tests were used.
Results: On the crossbite side, significant increases were found in LC (P = 0.039) and CA (P = 0.007), and on the non-crossbite side significant increases were observed in SJS (P = 0.027) and LC (P = 0.001) between T0, T1 and T2 in patients with UPC. On the right and left sides in the control-group, significant increases were identified in LC (P < 0.001 and P = 0.012, respectively) between T0 and T2.
Conclusions: In growing patients with UPC, RME followed by FOT is associated with significant changes in CP-related measurements.
(© 2021. European Academy of Paediatric Dentistry.)
Databáze: MEDLINE
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