Abstract
Introduction: Accurately assessing periodontal tissue dimensions before orthodontic treatment is essential, because it influences its aesthetic outcome. Therefore, the objectives of this retrospective study were: (i). to mainly focus on the development of new gingival recession and associated changes in gingival biotype after orthodontic treatment and (ii). also to examine changes (improvement, worsening or no change) in preexisting gingival recession and gingival biotype after orthodontic treatment. Materials and methods: 200 plaster models from both male and female subjects between 22 to 55 years of age who have completed the treatment in the Orthodontic Department were considered. All measurements were performed on plaster models before (T0) and after (T1) the orthodontic treatment. The extent of gingival recession was measured in millimetres, using a calliper, being recorded to the nearest 0.01 mm. Results and discussion: Overall significant changes in various parameters before and after treatment were observed (p<0.001). In all samples, the change in gingival recession was less than +/- 0.5. Conclusions: Correction of proclination and crowding of teeth by orthodontic treatment and its positive impact on gingival recession with a thin gingival biotype showed a significant association