ORIGINAL RESEARCH article
Front. Dent. Med.
Sec. Reconstructive Dentistry
Volume 6 - 2025 | doi: 10.3389/fdmed.2025.1613037
EFFECTS OF CLASS II ELASTICS ON LOWER INCISORS DURING TREATMENT WITH CLEAR ALIGNERS VS FIXED APPLIANCE: A RANDOMIZED CLINICAL TRIAL
Provisionally accepted
- 1Link Campus University Rome, Department of Life, Health, and Health and Healthcare Professions, Rome, Italy
- 2Postgraduate doctor, private practice, Rome, Italy
- 3Saint Camillus International University of Health and Medical Sciences, Rome, Lazio, Italy
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To analyze the inclination of the lower incisor in patients with Class II malocclusion treated with elastics and clear aligners compared to a group wearing the same elastics and fixed appliance.Trial design: Prospective two-arms parallel group randomized clinical trial with a 1:1 allocation ratio.A sample of 40 patients (19M and 21F), mean age 15.4±1.8 years, was collected from the Department of Orthodontics at Policlinico Tor Vergata (Rome), and was randomly divided in two groups: Invisalign clear aligner group (AG), which consisted of 20 subjects (8M, 12F) and multibracket fixed appliance group (MBG), composed by 20 patients (9M, 11F). The subjects were selected according to inclusion criteria: full permanent dentition (excluding third molars), Class II molar relationship (2.5-4 mm), no history of orthodontic treatment.For each participant of the study, dental and aesthetic measurements, both millimeter and angular were performed on the lateral cephalogram at time T0 (before treatment) and time T1 (after 18 months of treatment).In the short term (T1-T0=18 months), the analysis of the results showed no statistically significant changes in all evaluated parameters (IMPA, L1/A-Pg, Md1-TVL, LLA-TVL, p>0.05).Therefore, there were no statistically significant change in the inclination of the lower incisors.The use of Class II elastics in AG group showed a better control of the lower incisors' inclination, compared to the MBG group. Therefore, aligners represent a good alternative in the correction of mild Class II malocclusion in cases where the lower incisors proclination is undesirable.
Keywords: Clear aligners, Fixed appliance, lower incisor inclination, Growing patients, IMPA
Received: 16 Apr 2025; Accepted: 12 Jun 2025.
Copyright: © 2025 Laganà, Malara, Lione and Cozza. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
* Correspondence: Arianna Malara, Postgraduate doctor, private practice, Rome, Italy
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