Hegde Asha A, Roveena P M, Rashme Rashme, Prajapati Ushma Hardik, Vundela Rajashekar Reddy, Jadhav Avantika Vijaysingh
Orthodontics and Dentofacial Orthopedics, KVG Dental College and Hospital, Kurunjibhag, Sullia, Karnataka, India.
Department of Orthodontics and Dentofacial Orthopedics, Government Dental College, Pariyaram, Kannur, Kerala, India.
J Pharm Bioallied Sci. 2024 Jul;16(Suppl 3):S2703-S2705. doi: 10.4103/jpbs.jpbs_407_24. Epub 2024 Jul 31.
Orthodontic therapy aims at achieving stable treatment outcomes by ensuring retention of corrected tooth positions. Various retention protocols have been proposed, but their efficacy in sustaining treatment outcomes remains unclear.
This study evaluated the effectiveness of different retention protocols in maintaining treatment outcomes following orthodontic therapy. Thirty extracted human premolars were subjected to simulated orthodontic movement and then divided into three groups: group A-Essix retainer, group B-Hawley retainer, and group C-bonded retainer. Retention efficacy was assessed through measurements of tooth movement over a period of 6 months using a digital caliper.
The mean amount of mesial movement observed in group A was 0.5 mm (SD ± 0.1), in group B was 0.7 mm (SD ± 0.2), and in group C was 0.3 mm (SD ± 0.1). Statistical analysis revealed significant differences in retention efficacy among the three groups ( < 0.05).
The bonded retainer demonstrated superior efficacy in sustaining treatment outcomes by minimizing post-orthodontic tooth movement compared to Essix and Hawley retainers. Thus, the bonded retainer may be considered a preferable option for retention following orthodontic therapy.
正畸治疗旨在通过确保矫正后的牙齿位置得以保持来实现稳定的治疗效果。已经提出了各种保持方案，但其在维持治疗效果方面的疗效仍不明确。
本研究评估了不同保持方案在正畸治疗后维持治疗效果的有效性。选取30颗拔除的人类前磨牙进行模拟正畸移动，然后分为三组：A组 - Essix保持器组，B组 - 霍利保持器组，C组 - 粘结保持器组。使用数字卡尺在6个月的时间内通过测量牙齿移动来评估保持效果。
A组观察到的近中移动平均量为0.5毫米（标准差±0.1），B组为0.7毫米（标准差±0.2），C组为0.3毫米（标准差±0.1）。统计分析显示三组之间的保持效果存在显著差异（<0.05）。
与Essix保持器和霍利保持器相比，粘结保持器通过最小化正畸后牙齿移动在维持治疗效果方面表现出卓越的疗效。因此，粘结保持器可被视为正畸治疗后保持的更优选择。
