Pustaka Ilmiah Universitas Padjadjaran

Abstrak

THE EFFECT OF GABLE ANGLE SIZE AND SPRING ACTIVATION DISTANCE OF 0.016X0.022 NITI AND TMA SECTIONAL T-LOOP TOWARDS FORCE, MOMENTY AND MOMENTZ VALUES

This study is performed to discover the effect of gable angle size and activation distance towards force, momenty, and momentz occurred. The method of this study is in vitro laboratory experimental method. The study used a momentum core test instrument specially designed to measure force, momenty, and momentz. The sample consisted of 30 springs including 15 0.016 x 0.022 inch NiTi springs and 15 0.016 x 0.022 inch TMA springs with gable angle variation of 0˚- 0˚; 10˚- 10˚; 20˚- 20˚. The measurement of force, momenty and momentz was performed in an activation distance of 1, 2 and 3 mm followed by statistical test using ANAVA with factorial design of 3 x 2 x 3 and 5 replication for each cell. The results of the statistical test show that the gable angle size, activation distance and types of wire significantly affect the size of force (F count = 5.87 > F table = 2.5) and momentz (F count = 5.21 > F table = 2.5) resulted while the gable angle size effect towards momenty is not significant statistically. Based on the measurement, it can be concluded that the bigger the gable angle, the bigger the force and momentz created by NiTi and TMA sectional T-loop, 0.016 x 0.022 inch. The bigger the activation distance the bigger the force and momentz resulted.