Comparison of relapse between fixed bonded-type & removable Essix-type retainers in mandibular anterior segment 06 months after debonding
Keywords:
Retention, retainers, little’s irregularity index, relapse, mandibular anterior segmentAbstract
Introduction: Despite the significant advancements made in orthodontic treatments, retaining the desired tooth alignment remains a significant issue. Studies show that only 10% of individuals who underwent orthodontic procedures maintain their proper bite alignment 20 years post-retention, as assessed by orthodontic professionals. Furthermore, there is limited understanding of patients' perspectives regarding orthodontic relapse. Objective was to compare the mean relapse between Fixed Bonded-type and removable Essix-type retainers in the mandibular anterior segment 6 months after debonding.
Material and Methods: The study was conducted in the Department of Orthodontics at KRL Hospital, Islamabad. Duration of study was 1 year and 60 patients were selected, divided into 2 groups (Essix and Fixed). Little’s Irregularity Index was used to evaluate pre-debonding and 6 months post-retention mandibular anterior sextant alignment on models thereby evaluating relapse in Essix retainers and Fixed retainers group. Data was analyzed using SPSS and Post stratification independent T test was applied.
Results: Irregularity Index of the lower incisors showed a notable rise in patients using Essix retainers during the retention period, compared to those who had Fixed retainers. Additionally, patients using mandibular Essix retainers reported feeling significantly more crowded than those with Fixed retainers.
Conclusion: Compared to Fixed retainers, Essix retainers tend to cause more movement of the lower incisors. The discovery that only half of patients with general crowding are actually aware of it, suggests that the increased perception of crowding by Essix retainer patients may not be solely due to actual crowding, but could be influenced by other factors.
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