Early Treatment of Class II Division 1 Malocclusions with Prefabricated Myofunctional Appliances: A Case Report

Abstract

Removable functional appliances (RFA) have long been employed to address Class II malocclusion, particularly in cases involving a significant overjet, a deep bite, and molar class 2 issues. Notably divergent from RFA, myofunctional appliances (PMA) offer several distinct advantages, including applicability in noncompliant patients, adaptability in cases of dental element scarcity, suitability for allergic patients, impression-free utilization, and reduced costs. Within the array of clinical cases treated with PMA, we chose to present an intricate case involving an 8-year-old girl. Our aim was to showcase the immediate effects of PMA and to track the progress over a two-year span. Following one year of PMA treatment, substantial improvements were observed in a large overjet, a deep bite, and lip incompetence—factors often associated with elevated risks of dental trauma. These improvements not only positively impacted dental aesthetics but also engendered normalized nasal respiration and diminished palatal impingement, thereby enhancing the overall quality of life. Upon reaching the two-year mark, the clinical status pertaining to Class II malocclusion remained stable. Further treatment was advised in a subsequent phase to refine imperfections in the dental arch form. Nonetheless, comprehensive data from the prolonged follow-up of patients treated with these appliances are essential to establish robust scientific evidence concerning their long-term efficacy.