John Libbey Eurotext

L'Orthodontie Française


Do scoliotic patients need increased orthodontic treatment? A comparative study on 104 cases Volume 89, issue 4, Décembre 2018

1 Département d’Orthopédie Dento-Faciale, Faculté d’Odontologie, rue Guillaume Paradin, 69372 Lyon cedex 08, France
2 Clinique du Val d’Ouest, 39 Chemin de la Vernique, 69130 Écully, France
3 UMR CNRS 5558 – LBBE, Service de Biostatistique, 162 avenue Lacassagne, 69424 Lyon cedex 03, France
* Auteur pour correspondance :

Introduction: The diagnosis of scoliosis during orthodontic treatment is often attributed to orthodontic treatment, which may be a simple confounding factor. Do scoliotic patients require increased orthodontic treatment? Is the extent of their need for orthodontic treatment correlated with the severity of their scoliosis? Material and method: The authors conducted a comparative multicenter epidemiological study between a group of patients with a proven diagnosis of scoliosis objectified by the Cobb angle and a control group recruited from the general population. The endpoint was the Index Of Orthodontic Treatment Need (IOTN). The calculation of the number of subjects was made a priori. A statistical significance threshold of 5% was used for the statistical analysis. Results: In this study, 104 patients were included: 36 patients (10 boys, 26 girls) with an average age of 12.1 years (+/–2.3 years) in the scoliosis group (mean Cobb angle = 21°) versus 69 patients (20 boys, 49 girls) with an average age of 12 years (+/–2.7 years) in the control group. Patients with scoliosis have a significantly higher need for orthodontic treatment than the general population. The study did not correlate the severity of scoliosis with the increased need for orthodontic treatment. Discussion: Thus, the diagnosis of scoliosis during orthodontic treatment should not systematically result in the removal of the orthodontic appliance over-hastily held responsible for the scoliotic condition.