Original Article

Year : 2022 | Volume : 13 | Issue : 2 | Page : 25-36

An In -Vivo Study to Evaluate the Force Decay of Three Different OrthodonticElastomericLigatures.

Dr.Shabeer Ali Parambil1, Dr.Sangeetha Duraisamy 2, Dr.Krishnaraj R3, Dr.Ravi. K4

1Registrar Orthodontist, AsterSanadHospital,Riyadh,Saudi Arabia2,3Professor,DepartmentofOrthodontics,SRM DentalCollege,Ramapuram,Chennai4Professor,HeadoftheDepartment,DepartmentofOrthodontics,SRM DentalCollege,Ramapuram,Chennai.

Abstract:

Aim & Objectives:

The aim of the in-vivo study was to evaluate the force decay of three different clear elastomeric ligatures at four different time intervals.

Materials and methods:

Ten patients undergoing fixed orthodontic treatment with 0.019" x 0.025" SS arch wire placed passively in the lower arch were included. The three groups of clear elastomeric ligatures from three different manufacturers were placed on the specific lower incisor assigned to each. The force levels required to stretch the modules to a predetermined length of 4.1mm were evaluated at 0 hour, 24 hours, 7 days and 21 days after intra-oral use using a universal testing machine. One way ANOVA followed by Post hoc Tukey HSD was performed for within the group and between group comparisons.Paired T test was done for pairwise comparisons. (P value≤ 0.05)

Results:

The mean force level recorded were high for as received elastomeric ligatures in all the three study groups and all demonstrated a significant force decay over time. One way ANOVA showed a significant difference between the force levels recorded at different time intervals within and between the groups. Post Hoc Tukey HSD revealed a significant difference between the three groups at all the time intervals except at 7 days and 21 days for Group II and Group III samples. Paired sample T test for pairwise comparison of force exerted at different time intervals in all the three groups revealed a significant difference.

Conclusion:

Group I elastomeric ligatures exhibited significantly high mean force and less force decay compared to Group II and Group III samples. All the three ligatures exhibited significant force decay over time. Keywords: Elastomeric ligature, Force decay, Force degradation, Mechanical testing

SOURCE OF FUNDING

None

CONFLICT OF INTEREST

There is no conflict of interest.

How to cite this article:

Parambil, S. A. ., Duraisamy, S., R, K. ., & K, R. (2022). An In - vivo study to evaluate the force decay of three different orthodontic elastomeric ligatures. : Force decay of elastomeric ligatures . International Journal of Orthodontic Rehabilitation, 13(2), 25–36. https://doi.org/10.56501/intjorthodrehabil.v13i2.520