Abstract
Idiopathic Bone Cavity (IBC) or Simple Bone Cyst (SBC) is a non- epithelialized bone cavity with serosanguinous fluid content or empty. There is a literature debate regarding its pathogenesis that remains unclear. The main treatment option is the surgical exploration, although there are successful cases described in the literature in which just a follow-up with clinical and radiographic evaluation was performed.ObjectiveThis study aimed to assess the spontaneous resolution of idiopathic bone cavity untreated by surgery.Material and MethodsTwenty-one patients diagnosed with surgically untreated IBC were submitted to a follow-up protocol modified from Damante, Guerra, and Ferreira 5 (2002). A clinical and radiographic evaluation was performed in 13 patients (13/21), while eight patients (8/21) were only radiographically evaluated. Three observers evaluated the panoramic radiographs of 21 patients and the Kappa test was performed by intra and inter-examiners. Inductive and descriptive statistics were applied to the results.ResultsOnly one patient had a positive response to palpation and percussion of the teeth in the cyst area. Most of the cysts evaluated were rated as 3 (lesion “in involution”), 4 (lesion “almost completely resolved”), or 5 (“completely resolved”).ConclusionsWe observed progressive spontaneous resolution of IBC. Most cysts were found in the recovery process in different follow-up periods. Patient's follow-up, without surgery, may be considered after the diagnosis based on epidemiological, clinical, and radiographic features of the lesion.
Highlights
Idiopathic Bone Cavity (IBC), Traumatic Bone Cyst, or Simple Bone Cyst (SBC) is a commonly asymptomatic intraosseous cavity not covered by epithelium, empty or partially filled with serous/bloody fluid
Twenty-one cases of untreated IBC were requested to a clinical evaluation
The teeth were vital and suffered no trauma, the sensitivity was classified as a possible dysesthesia of psychogenic origin by the patient’s knowledge regarding the existence of IBC in his mandible
Summary
Idiopathic Bone Cavity (IBC), Traumatic Bone Cyst, or Simple Bone Cyst (SBC) is a commonly asymptomatic intraosseous cavity not covered by epithelium, empty or partially filled with serous/bloody fluid. It has a thin membrane of connective tissue, only microscopically visible, overlying the bone surface. A supposed etiology may be linked to a hemorrhagic or ischemic vascular phenomenon with subsequent bone necrosis and resorption. A supposed etiology may be linked to a hemorrhagic or ischemic vascular phenomenon with subsequent bone necrosis and resorption9 This lesion affects young people between the 1st and 2nd decades of life. The body of the mandible is the most frequently affected area
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