SciELO - Scientific Electronic Library Online

 
vol.17 issue1Dahlberg formula: a novel approach for its evaluationStudy of the number of occlusal contacts in maximum intercuspation before orthodontic treatment in subjects with Angle Class I and Class II Division 1 malocclusion author indexsubject indexarticles search
Home Pagealphabetic serial listing  

Dental Press Journal of Orthodontics

On-line version ISSN 2176-9451

Abstract

SCANAVINI, Paulo Estevão et al. Evaluation of the dental arch asymmetry in natural normal occlusion and Class II malocclusion individuals. Dental Press J. Orthod. [online]. 2012, vol.17, n.1, pp. 125-137. ISSN 2176-9451.  http://dx.doi.org/10.1590/S2176-94512012000100016.

OBJECTIVE: To verify the presence and degree of asymmetry of dental arches in Brazilian individuals with natural normal occlusion and Class II, Divisions 1 and 2 malocclusions. METHODS: The study evaluated the symmetry of the maxillary and mandibular dental arches of 180 pairs of dental casts, divided into: Group I = 60 pairs of natural normal occlusion individuals; Group II = 60 pairs of Class II, Division 1 malocclusion individuals; and Group III = 60 pairs of Class II, Division 2 malocclusion individuals. A device was used to measure dental midline deviation and the canine tip in the dental arches (in degrees). It was also verified the distance of the upper canines from the palatal suture, intercanine distance, and anteroposterior upper and lower first molar position. RESULTS: Dental arches of individuals from all groups presented asymmetry, regardless of the presence of malocclusion. Group I showed a lower asymmetry degree in relation to Groups II and III. The asymmetry in Groups II and III was similar. CONCLUSION: The dental arches of individuals with natural normal occlusion and with Class II, Division 1 and Division 2 malocclusions showed asymmetry. The asymmetry degree was higher in the mandibular dental arches than in the maxillary dental arches in all 3 evaluated groups.

Keywords : Dental arch; Abnormalities; Growth and development; Anatomy and histology; Malocclusion.

        · text in English     · pdf in English