Comparison of the efficiency of initial dental alignment with Invisalign® aligners changed every 7 or 14 days in mature adults: Randomized clinical trial

• Published in: Orthodontics & craniofacial research 2024-08, Vol.27 (4), p.544-551
• Main Authors: Fialho, Tiago, Freitas, Karina Maria Salvatore, Ohira, Eduardo Terumi Blatt, Souza, José Eduardo Prado, Oliveira, Renata Cristina Gobbi, Oliveira, Ricardo César Gobbi, Valarelli, Fabrício Pinelli, Pinzan‐Vercelino, Célia Regina Maio, Cotrin, Paula
• Format: Article
• Language: English
• Subjects: Adult; Female; Humans; Male; malocclusion; Malocclusion - therapy; Middle Aged; Orthodontic Appliance Design; orthodontic appliances; Orthodontic Appliances, Removable; removable; Time Factors; tooth movement techniques; Tooth Movement Techniques - instrumentation; Tooth Movement Techniques - methods; Treatment Outcome
• ISSN: 1601-6335; 1601-6343; 1601-6343
• DOI: 10.1111/ocr.12766

Objective To compare the anterior crowding correction after sequential use of the first 5 aligners between two aligner exchange protocols (7 and 14 days) in mature adult patients. Materials and Methods Thirty‐six patients over 35 years who received orthodontic treatment with Invisalign® were randomly allocated to two different aligner replacement sequence protocols: Group 1: exchange every 7 days (n = 18); and Group 2: exchange every 14 days (n = 18). All patients were scanned with iTero Element 5D® (Align Technology) in two treatment times: at pre‐treatment (T1) and after using the first five aligners (T2). Little's Irregularity Index (LII) and arch widths were evaluated with OrthoCAD software. Intra and intergroup comparisons were performed with the dependent and independent t‐tests. The results were considered significant for P