Print ISSN: 1812-1217

Online ISSN: 1998-0345

Keywords : Stainless steel


Evaluation and Comparison of The Ef-fect of Artificial saliva and Mouthwash Solution on Force Degradation of Different Types of Orthodontic Traction Aids (Comparative in Vitro Study)

Khudair A Al-Jumaili; Abdulrahman I Ali

Al-Rafidain Dental Journal, Volume 11, Issue 1, Pages 172-182

Aims: To determine the amount of force degradation of three types of orthodontic traction aid polyure-thane elastomeric chain (PEC), nickel titanium closed coil spring (NiTi CCS) and stainless steel closed coil spring (SS CCS). Material and methods: Samples were extended to a specific distance which was 18 mm in case of PEC and 20 mm in case of NiTi CCS and SS CCS. Each extended sample will then incubated in dry condition, artificial saliva, and mouthwash solution, for total incubation period of three weeks. Results: showed that samples in dry condition always showed minimum force degrada-tion percent than in wet conditions. It also showed that the increase of incubation time leads to increase in force degradation percent with major degradation percent located within first twenty four hours. Conclusions: in dry and two wet conditions, NiTi CCS reflects the lowest percent of force degradation, PEC showed highest percent, while SS CCS showed intermediate one.

Evaluation and Comparison of The Effect of Artificial saliva and Mouthwash Solution on Force Degradation of Different Types of Orthodontic Traction Aids (Comparative in Vitro Study)

Khudair A Al-Jumaili; Abdulrahman I Ali

Al-Rafidain Dental Journal, Volume 11, Issue 1, Pages 52-62

Aims: To determine the amount of force degradation of three types of orthodontic traction aid polyure-thane elastomeric chain (PEC), nickel titanium closed coil spring (NiTi CCS) and stainless steel closed coil spring (SS CCS). Material and methods: Samples were extended to a specific distance which was 18 mm in case of PEC and 20 mm in case of NiTi CCS and SS CCS. Each extended sample will then incubated in dry condition, artificial saliva, and mouthwash solution, for total incubation period of three weeks. Results: showed that samples in dry condition always showed minimum force degrada-tion percent than in wet conditions. It also showed that the increase of incubation time leads to increase in force degradation percent with major degradation percent located within first twenty four hours. Conclusions: in dry and two wet conditions, NiTi CCS reflects the lowest percent of force degradation, PEC showed highest percent, while SS CCS showed intermediate one

The Frictional Coefficient Comparison Between Stainless Steel And Beta– Titanium Arch wires Ligatured to the Stainless Steel Bracket Via Different Ligatures

Hussain A Obaidi; Anas M Al-Mukhtar

Al-Rafidain Dental Journal, Volume 8, Issue 1, Pages 79-82

Aims: To compare the frictional coefficients between the stainless steel and B–titanium arch wire liga-tured to the stainless steel bracket via different ligatures. Materials and Methods: The sample of the study included the stainless steel and β–Titanium arch wire groups, the wire group comprised of three subgroups, each wire subgroup ligatured to stainless steel brackets via different ligatures. The mea-surement of the frictional coefficient was performed using the simulated side arch fixed appliance at-tached to the tensile machine. The data were analyzed by using the descriptive and variance statistical tests at p≤ 0.05 significance level. Results: The results demonstrated that the stainless steel arch wire tied to the bracket via stainless steel ligature achieved significant lower frictional coefficient value when compared with other wire subgroups. Conclusions: The combination of the stainless steel; arch wire, bracket and ligature is more practical choice in sliding orthodontic treatments.