The aim of the study was to identify the significant necessity and predictive factors of dental crowding treatment, on 422 subjects (165 boys and 257 girls) from the North-East part of Romania. Correlations have been established between dental crowding and age, dentition, Angle class of malocclusions, the etiological factors, types and modalities of treatments, and types of orthodontic appliances employed (p<0.05). Application of the chi-square test provided the necessity factors for the types of dental crowding treatments (p<0.001), while the Hosmer-Lemeshow test permitted to establish the predictive factors for the interceptive orthodontic treatment (maxillary expansion for mild and moderate crowdings), the corrective orthodontic treatment (maxillary expansion and orthodontic extraction for dental crowding with local causes) and also for the surgical-orthodontic treatment (orthodontic extraction for mild and moderate crowdings) (p>0.05). The necessity and predictive factors of the treatment were adequate with age, dentition, severity of crowding and Angle class of malocclusion.
Keywords:- dental crowding
- necessity factors
- orthodontic treatment
- predictors of treatment