The Journey of an Erupting Permanent Tooth and Its Fibrous Companion: A Pediatric Case Series.

Reactive proliferative lesions are commonly encountered in the oral cavity, primarily attributable to the continuous exposure of the mucosal tissues to recurrent mechanical trauma and microbial challenges. These lesions typically arise secondary to identifiable initiating factors, including dental plaque accumulation, calculus deposition, persistent local irritation, or the presence of foreign bodies. Reactive hyperplastic lesions represent non-neoplastic enlargements of the oral soft tissues that develop as an amplified reparative response following chronic irritation or minor trauma. The present case series documents an uncommon presentation of fibrous hyperplasia in pediatric patients, occurring in association with the eruption of permanent teeth. This report emphasizes the importance of recognizing that physiological dental processes, such as tooth eruption, may act as contributory factors in the genesis of reactive lesions. Furthermore, it highlights the critical role of histopathological assessment in establishing a definitive diagnosis. Early intervention of these lesions is crucial, as longstanding lesions in the presence of chronic irritation have the potential to transform into neoplasms.