Hsu Yin Min - Academia.edu (original) (raw)
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Saint-Petersburg Stieglitz State Academy of Art and Design
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Papers by Hsu Yin Min
International Orthodontics, Jun 1, 2019
Objective > To analyse the amount of root resorption of mesially or horizontally impacted mandibu... more Objective > To analyse the amount of root resorption of mesially or horizontally impacted mandibular third molars after orthodontic uprighting treatment. Materials and methods > Twenty-four patients with an age range of 20$26 years old who had mesially/horizontally impacted third molars with complete root formation. And those with decayed or missing the mandibular first molar on the same side were selected. The lower third molars were uprighted and the extraction spaces closed. Root resorption was compared with paired t-test. The related risk factors for root resorption were compared with Pearson correlation analysis. Result > The average uprighting time was 10.00 months (4$16 months). The study showed that all the impacted third molars were uprighted and got satisfactory outcomes after treatment. Shortening in length of mandibular third molar roots was detected at the end of the treatment, but no statistically significant differences were found (P < 0.05). Root resorption was correlated with the duration of uprighting and the distance that root moved. Conclusion > Impacted mandibular third molars were uprighted and the amount of root resorption of third molar after treatment was not increased. The duration of uprighting and the distance that root moved influence the degree of root resorption. Mots clés Dent de sagesse mandibulaire incluse Résorption radiculaire Traitement orthodontique Résumé Étude des facteurs prédisposant à la résorption radiculaire lors du redressement orthodontique des troisièmes molaires incluses Objectif > Analyser la quantité de résorption radiculaire de la dent de sagesse mandibulaire incluse à orientation mésiale ou horizontale après nivellement orthodontique. Matériels et méthodes > Vingt-quatre patients âgés de 20 à 26 ans ayant une dent de sagesse incluse à orientation mésiale ou horizontale avec formation complète de racines et dont la première molaire
International Orthodontics, Jun 1, 2019
Objective > To analyse the amount of root resorption of mesially or horizontally impacted mandibu... more Objective > To analyse the amount of root resorption of mesially or horizontally impacted mandibular third molars after orthodontic uprighting treatment. Materials and methods > Twenty-four patients with an age range of 20$26 years old who had mesially/horizontally impacted third molars with complete root formation. And those with decayed or missing the mandibular first molar on the same side were selected. The lower third molars were uprighted and the extraction spaces closed. Root resorption was compared with paired t-test. The related risk factors for root resorption were compared with Pearson correlation analysis. Result > The average uprighting time was 10.00 months (4$16 months). The study showed that all the impacted third molars were uprighted and got satisfactory outcomes after treatment. Shortening in length of mandibular third molar roots was detected at the end of the treatment, but no statistically significant differences were found (P < 0.05). Root resorption was correlated with the duration of uprighting and the distance that root moved. Conclusion > Impacted mandibular third molars were uprighted and the amount of root resorption of third molar after treatment was not increased. The duration of uprighting and the distance that root moved influence the degree of root resorption. Mots clés Dent de sagesse mandibulaire incluse Résorption radiculaire Traitement orthodontique Résumé Étude des facteurs prédisposant à la résorption radiculaire lors du redressement orthodontique des troisièmes molaires incluses Objectif > Analyser la quantité de résorption radiculaire de la dent de sagesse mandibulaire incluse à orientation mésiale ou horizontale après nivellement orthodontique. Matériels et méthodes > Vingt-quatre patients âgés de 20 à 26 ans ayant une dent de sagesse incluse à orientation mésiale ou horizontale avec formation complète de racines et dont la première molaire