Abstract
Objective: To evaluate the rate of tooth movement and the pain perception via self-ligating (SL) and conventional elastomeric ligation brackets (CB) system. Material and Methods: This study has been conducted at the Orthodontic Department of Baqai Dental College, Baqai Medical University. The sample size of this study comprised 40 patients, falling between the age of 12-30 years without any sex discrimination. Shapiro-Wilk was used to check the distribution of data. Non-parametric Mann Whitney U test was applied to evaluate the pain associated with SL and CB brackets system. To analysis the canine retraction Wilcoxon test was applied for the comparison of CB and SL brackets system. For all statistical analyses, the p-value of <0.05 was considered significant . Results: Pain level associated with retraction via CB and SL shows significant differences. However, the rate of canine retraction via CB and SL shows no significant differences at stages T0-T1 and T1-T2. However, stage T2-T3 shows a significant difference . Conclusion: As pain during orthodontic treatment is mostly associated with the level of compression of the periodontal ligament, it may be hypothesized that lower frictional forces generate less compression of the periodontal ligament and blood vessels, and so alter the type of pain experienced.
Highlights
Orthodontic treatment can improve dentofacial esthetics as well as masticatory function, but treatment with fixed appliances can be associated with few complications and inherent risks [1,2]
To analysis the canine retraction Wilcoxon test was applied for the comparison of conventional elastomeric ligation brackets (CB) and SL brackets system
As pain during orthodontic treatment is mostly associated with the level of compression of the periodontal ligament, it may be hypothesized that lower frictional forces generate less compression of the periodontal ligament and blood vessels, and so alter the type of pain experienced
Summary
Orthodontic treatment can improve dentofacial esthetics as well as masticatory function, but treatment with fixed appliances can be associated with few complications and inherent risks [1,2]. Pain and masticatory discomfort, root resorption, gingivitis, and gingival hyperplasia are amongst the commonest complications in orthodontics [1]. A light force is ideal for achieving all kinds of tooth movements [2], but more than 50 g of orthodontic force is wasted in overcoming the static friction produced by elastomeric ligatures [4]. Much heavier than optimum force is needed to achieve even the simplest movement, which may cause more pain, discomfort, root resorption, delayed movement and even anchorage loss [5]. From a patient’s perspective, pain is the worst aspect and main cause of discontinuation of orthodontic treatment [8,9]
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