Introduction: As a discrete and patient-friendly substitute for conventional fixed orthodontic appliances, clear aligner therapy has become increasingly popular. Using finite element analysis (FEA), this study assesses how well different composite attachments work to achieve rotational mobility of the mandibular lateral incisors. Orthodontic treatment has been transformed by Align Technology's Invisalign™ system and CAD/CAM technology, but rotational movements are still difficult, particularly for cylindrical and small teeth. Material and methods: The alveolar bone, aligner systems, and periodontal ligament (PDL) were all included in the three-dimensional (3D) finite element model of the mandibular arch. Teeth with T-shaped composite attachments, half-ellipsoids, horizontal rectangles, and no attachments had their rotational forces examined. Forces were calibrated using strain gauge systems, and computer models examined stress distribution and displacement in teeth, aligners, and surrounding tissues. Importantly, while prior studies predominantly focused on larger teeth like canines and premolars, this investigation uniquely assessed the effects on smaller mandibular incisors, where maintaining structural integrity poses additional challenges. These findings provide valuable insights for clinicians in choosing appropriate instrumentation techniques for minimally invasive endodontic treatment. Results: Results indicated that composite attachments significantly enhanced rotational movement compared to aligners without attachments. Among the attachment designs, the horizontal rectangular attachment yielded the highest rotational efficacy, followed by the T-shaped attachment. Stress patterns showed concentration in the labioincisal and cervical regions, with stress values remaining within physiological limits, suggesting no harm to periodontal structures. The aligner with T-shaped attachments exhibited the least distortion, improving its functional efficiency.