Abstract
The purpose of the study was to examine the association between alignment conditions of anterior teeth and dental health in 15-year-old adolescents. The study group consisted of 74 females and 70 males with 6 anterior teeth in both jaws. The following parameters were assessed: plaque index (P1I), gingival index (GI), probing depth (PD), space index (SpI), filled surfaces (FS), and the NONAS-i.e., the number of non-aligned proximal tooth surfaces in each jaw counted on model casts. Statistical examination of the data was performed using chi 2 tests of association and homogeneity and correlation coefficient analyses. In both sexes and both jaws, anterior tooth segments with none or few non-aligned teeth had a more favourable periodontal state than segments with an increased number of non-aligned teeth. Likewise, tooth segments with none or few non-aligned teeth had a reduced frequency of proximal fillings compared to segments with an increased number of non-aligned teeth. In males, the distribution of restorations in the anterior segment of the lower jaw was relatively homogeneous in the 3 groups.
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