The effect of different α and β gable on stainless steel and TMA segmental T-loop on the resulting force _ an in vitro study

1st Siliwangi International Conference on Innovation in Research 2018

Laviana, A.^1

Orthodontic Department, Faculty of Dentistry, Universitas Padjadjaran, Jl. Sekeloa Selatan 1, Bandung

40132, Indonesia^1

关键词: Chemistry laboratory;    Factorial design;    Faculty of science;    In-vitro;    Orthodontic treatments;    P-values;    Statistics analysis;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/550/1/012039/pdf
DOI  :  10.1088/1757-899X/550/1/012039

来源: IOP

【 摘 要 】

Adding more angle to the segmental T-Loop gable can affect the amount of force created to retract the canine on an orthodontic treatment with extraction. In-vitro laboratory experimental design, performed at the Chemistry Laboratory of Faculty of Science, ITB. The samples are 60 segmental T-loop springs with α and β angle of 0?-0?; 0?-45?; 45?-0?; 22.5?-22.5?; 15?-30?; 30?-15?. Force was measured using autograph with retraction distance of 1, 2, and 3 mm, then analyzed using ANOVA statistics analysis with a factorial design of 2x3x6 and 5 replications for each cell. The results of the posthoc Student Newman Keuls and Tukey test show that the added angle to the α and β gables of SS and TMA T-loop will add more resulting force along with the increase of retraction distance. The added angle to the α and β gables of SS and TMA segmental T-loop will add more resulting force along with the increase of retraction distance. The force resulted by the SS T-loop with various α and β gables are significantly different, while the force resulted by the TMA T-loop are not (p-value