Idiopathic Bone Cavity Research Articles

Idiopathic bone cavities of the mandible: an update on recurrence rates and case report

Idiopathic bone cavities (IBCs) are usually an incidental finding, often found in long bones but also in the craniofacial skeleton. Typically solitary, IBCs can present at multiple sites. Surgical exploration alone has proved effective, although recurrence does occur, particularly in cases with multiple lesions. The average time necessary to observe either recurrence or complete healing has been reported to be more than 3 years. Previously reported low recurrence rates for IBCs in the craniofacial skeleton may have been artificially low because of insufficient long-term follow-up. Providers should be prepared for long-term follow-up and care of these patients. The case of the patient presented here supports the need for long-term follow-up.

Asynchronous idiopathic bone cavity: A case report

Idiopathic bone cavity (IBC) is a non-odontogenic intra-osseous lesion that affects the jaws and others bones. The aetiology of IBC remains unknown. IBC is frequently observed as a single radiolucent area with a corticated, well-defined border, a scalloped shape and a minimal effect on the surrounding structures. A case report of asynchronous IBC in a 17-year-old woman is presented. The first lesion occurred in the mandibular symphysis region, and the second IBC occurred in the right mandibular ramus. Both lesions were surgically treated, and the patient has been disease-free for 5 years.

Idiopathic bone cavity: case series involving children and adolescents

This study aimed at reviewing a series of clinical cases of children and adolescents treated for idiopathic bone cavity (IBC). Ten lesions diagnosed as IBC in nine patients treated between February 2000 and December 2008 were reviewed, focusing on clinical and radiographic aspects, as well the therapeutic approach. Most of the patients were Caucasian with no sex predilection (55.5% males and 45.5% females), and all were in the second decade of life at the time of IBC diagnosis. The lesions were asymptomatic and detected during routine radiographic examinations. All the lesions were located in the mandible, and the anterior region was the most affected. The most adopted therapeutic approach was simple curettage of the bone cavity, and all surgically-treated patients presented complete bone healing after 6 months, postoperatively. Clinical and radiographic diagnoses associated with surgical exploration are the most important treatment options in order to avoid radical surgery or unnecessary endodontic treatment, mainly when idiopathic bone cavities are detected in children and adolescents. Further studies aimed at elucidating the etiopathogenesis of this condition and defining the most appropriate treatment should be conducted.

The relationship between idiopathic bone cavity and orthodontic tooth movement: analysis of 44 cases

Idiopathic bone cavity (IBC), also named simple or traumatic bone cyst, is a common lesion of unknown cause. The mandible is a very common location, although it may occur in any bone of the body. The authors performed a retrospective analysis of 44 cases in order to assess the causation of this entity. Each case was analysed by two of the authors (IV and SM) for medical and dental history, history of mandibular/maxillary trauma, clinical presentation, radiographic appearance, surgical findings and histopathology. This retrospective study suggested a possible relationship between IBCs and orthodontic treatment. This association was noted in 10/44 cases (22.73%). All of these cases were located in the mandible and were well-circumscribed radiolucencies. Evaluation of these cases disclosed that 6/44 (13.64%) demonstrated scalloping, and 3/44 (6.82%) revealed bony expansion. The age range of the patients evaluated was 9-74 years. None of these cases had a history of trauma or extractions in the area. The findings of this retrospective study suggest an association between orthodontic treatment and the development of this IBC. This occurrence may be multifactorial; further research in the dental science is required.

Parameters in panoramic radiography for differentiation of radiolucent lesions

Objective:The aims of this study were to establish parameters in panoramic radiography for interpretation of unilocular radiolucent lesions, and to compare the accuracy of diagnoses given by examiners before and after using these parameters.Material and Methods:In Part I, 12 specialists analyzed 24 images and the diagnostic criteria used by each examiner to make correct diagnoses were used to build a list of basic radiographic parameters for each pathology (ameloblastoma, keratocystic odontogenic tumor, dentigerous cyst, and idiopathic bone cavity). In Part II, this list was used by 6 undergraduate students (Un), 8 recently graduated dentists (D), 3 oral pathologists, 3 stomatologists, 3 oral radiologists, and 3 oral surgeons to diagnose the corresponding pathologies in the other set of 24 panoramic radiographs (T2). The same analysis occurred without using this list (T1). The method of generalized estimating equations (GEE) was used in order to estimate the probability of making a correct diagnosis depending on the specialty of the examiner, type of lesion, and moment of the evaluation, T1 or T2 (before or after they had access to the list of parameters, respectively).Results:Higher values were obtained for the probability (GEE) of making a correct diagnosis on T2; the group Un presented the highest improvement (14.6 %); no differences between the probabilities were observed either between Un and D, or among the different groups of specialists.Conclusions:The use of panoramic radiographic parameters did allow improving the diagnostic accuracy for all groups of examiners.

Traumatic Bone Cyst of the Condylar Region: Report of 2 Cases

The traumatic bone cyst (TBC) has been a recognized entity since 1929, when it was described by Lucas, and subsequently further defined by Rushton. Although “traumatic bone cyst” may misrepresent the nature of the lesion, authors have noted the popularity of this label. This intraosseous entity is also known by a variety of synonyms including solitary bone cyst, simple bone cyst, hemorrhagic bone cyst, unicameral cyst, idiopathic bone cavity, and progressive bone cyst or cavity. Because the classical scalloped radiographic appearance is not diagnostic, nor does the lesion possess clinical specificity, it is important to differentiate it from other forms of pathology occurring in the maxillofacial region, including aneurysmal bone cyst, eosinophilic granuloma, central giant cell granuloma, ameloblastoma, brown tumor of hyperparathyroidism, and osteosarcoma. Most commonly, the TBC involves the body or symphysis of the mandible. It is rarely found in the condyle, with approximately 10 cases currently available. This report describes 2 new cases of TBC in the region of the mandibular condyle.

Idiopathic bone cavity: a clinical, radiographic, and histological study

The aim of the present study was to evaluate the clinical, radiographic and histological characteristics of idiopathic bone cavities from the Oral Pathology archives at Universidade Federal de Minas Gerais. Forty-three cases were retrieved. Age, sex, some radiographic variables and morphological variables measured of the connective tissue, were studied. The results showed the men who developed cavities tended to be younger than women (median 16 years (range 11–48) compared with 18 (12–64)). Radiographically rounded lesions that were single, unilocular, and small were more common in younger patients. While rounded cavities occurred mainly in the anterior region, cavities with interdental scalloping occurred in the posterior area. The median age of the patients with thin connective tissue on the wall of the bony cavity was lower than that of those with a thicker lining. In conclusion, the present study shows that there is a significant relation between age and sex, radiographic and histological variables. These findings may contribute to the diagnosis of idiopathic bone cavities.

Review of the Idiopathic Bone Cavity of the Jaws

The IBC is a lesion that favors the anterior portions of the jaws and occurs principally in young patients. The lesion radiographically tends to scallop up between the roots of the affected teeth and result in cortical expansion. The cause of the IBC has not been determined, but trauma seems least likely as the cause. The IBC is best treated by curettage, and follow-up is mandated. A biopsy is required to establish a definitive diagnosis and to rule out aggressive lesions that can appear radiographically similar to the IBC, such as the ameloblastoma and the parakeratinizing odontogenic keratocyst.

Idiopathic bone cavity (traumatic bone cyst) with the radiographic appearance of a fibro-osseous lesion

This article presents an unusual case of idiopathic bone cavity that originally was either not observed or diagnosed as a fibro-osseous condition. When a differential diagnosis was established, it included fibro-osseous conditions, odontogenic cysts and neoplasms, and central giant cell granuloma but not the definitive diagnosis. The patient's demographic data, history, symptoms, and clinical and radiographic appearance all conspired to obscure the true nature of the condition, which was not revealed until a biopsy was attempted. A more thorough initial radiographic examination might have led to an earlier diagnosis.

Idiopathic bone cavity on the posterior buccal surface of the mandible

A cavity on the posterior buccal surface of four dry mandibles ( n = 8282) is reported. The shape, size, unilaterality, and sex distribution of this phenomenon are similar to anterior and posterior idiopathic bone cavities (i.e., defects) on the lingual cortex. Posterior buccal mandibular defects differ from posterior lingual cavities in their unilateral occurrence and age distribution. The differential diagnosis for posterior buccal mandibular defects includes an anatomic variant, an aneurysmal erosion, erosion by a lymphoid nodule, and a neural neoplasm.

下顎体部後方に発現する小骨欠損（Ｓｏ‐ｃａｌｌｅｄ Ｓｔａｆｎｅ’ｓ ｂｏｎｅ ｃａｖｉｔｙ）の形成経過ならびに成因に関する考察

In 1942, Stafne reported bone cavity of radiolucent lesion below the mandibular canal in the region between the foward part of the mandibular angle and the third molar. The cavity appears either round or oval, and the walls of the cavity are generally dense and thick.Other cases of this type of cavity or defect have been reported by many author after Stafne's article. Considering the etiology, it has been suggested that the cavity or defect may be caused by embryonic abnormality, anomalies of developmental, pulsation of the artery and pressure of hypertrophied submandibular gland. Because of the uncertain etiology, various terms have been proposed to designate the condition, such as Stafne's bone cavity, latent bone cyst, static bone cabity or defect, mandibular embryonic defect, idiopathic bone cavity, developmental bone defect.Although many cases have been reported, the course of the developmental of bone defect is not yet recorded. We examined the developmental process of this kind of defect.A case was soon in a 43-year-old male patient. His dentist found lower right first molar cementoma in a radiograph and referred him to us for treatment. On this occasion, nothing remarkable was found except first molar from the panoramic investigation. Three years later, a new radiograph revealed that a small area of bone rarefaction (radiolucent 20 × 15 mm) had appeared in the region of mandibular canal between trigonum retromolare and distal root of the third molar. 10 months later, the radiolucent area moved downward to the inferior border of the mandibular canal. It was turned into an oval shape and outlined by a radiopaque border. After another 6 months, the oval area showed a definite shape that was surround by a compact bone.The latest radiographic examination was performed after another year and no change was detected (10 × 5 mm). On microscopic examination, the lesion consisted of fibrous connective tissue with neurovascular structure. The arteries revealed thrombosis with recanalization of the thrombus and bursting hemorrhage. The wall of the defect consisted of compact bone without osteoblast or osteoclast.We considered that the defect was a bone destruction caused by hemorrhage by rhexis of the thrombosed small arteries in the mandibular canal and that the typical defect of cortex outline could be a result from failure of bone repair owing to the persistent existence of the soft tissue in the bone defect.

静止性骨空どうの６例

Six cases of lingual mandibular bone concavity are reported in this paper with review of the literature. This concavity is usually seen between the mandibular canal and the inferior border of the mandible, just anterior to the mandibular angle. This condition is also seen in the anterior portion of the mandible.A variety of terms have been applied to this bone concavity, including static bone cavity, static bone defect, latent bone cyst, idiopathic bone cavity, aberrant salivary gland tissue in the mandible, developmental bone cyst, and so on. Recently, the term, lingual mandibular bone concavity, is thought to express this condition most precisely. Since Stafne described this condition in 1942, numerous cases have been reported in the English literature. In Japan, however, only 49cases have been reported in the available literature.Of our cases, five were present in the posterior portion of the mandible and one in the anterior portion. All our cases occured in males over the fifth decade. Under the clinical diagnosis of mandibular cyst, the one in the anterior portion was treated surgically and its content was examined microscopically. Microscopic findings revealed normal sublingual salivary gland tissue. From the result, the diagnosis of lingual mandibular bone concavity was made. another cases were diagnosed by clinical and radiographic findings These cases are now kept under observation.Of 55 cases reported in the Japanese literature including our 6 cases, 51 cases occured in males. Although, no site distribution was reported previously, our study revealed an inclination to the left side. Most of contents were salivary gland tissue, but fibrous connective tissue and fatty tissue were occasionally involved. It is suggested that salivary gland tissue changes to fibrous connective tissue and fatty tissue with aging. Therefore, salivary gland tissue is considered to play an important role in the formation of this condition.

Idiopathic bone cavity associated with a necrotic pulp and facial cellulitis

A case report has been presented documenting an infected idiopathic bone cavity associated with a necrotic pulp and an acute odontogenic facial cellulitis. The diagnostic dilemma which can occur when several pathological entities present in the same anatomical area and interact with one another was discussed. Dentists must be cautious in assuming a causative relationship between necrotic pulp tissue and all associated periapical radiolucencies. A case report has been presented documenting an infected idiopathic bone cavity associated with a necrotic pulp and an acute odontogenic facial cellulitis. The diagnostic dilemma which can occur when several pathological entities present in the same anatomical area and interact with one another was discussed. Dentists must be cautious in assuming a causative relationship between necrotic pulp tissue and all associated periapical radiolucencies.

Lingual mandibular bone defect — idiopathic bone cavity: Report of a case

A case of a lingual mandibular bone defect, like idiopathic bone cavity mimicking a large tumor, is presented. This case is very rare and unique with regard to the site, size and form of the lesion, as compared with cases reported previously.

An Analysis of Radiological Findings of Stafne's Idiopathic Bone Cavity

The purpose of the present study was to compare the incidence of idiopathic bone cavities among Japanese and other nationalities by evaluating panoramic radiographs. No differences in the incidence of bone cavities were noted between Japanese and other nationalities. Twenty-four cavities were found in 23 000 panoramic radiographs; all lesions were unilateral, 20 occurred in men, 4 in women. The age distribution of the patients ranged from 17 to 77 years. Radiographically these lesions were surrounded either partially or completely by a dense radiopaque line and most were ovoid or elliptical in shape. Lesions were classified radiographically according to their relationship to the mandibular canal and lower border of the mandible. The most common location for these lesions was in close proximity to the mandibular canal with partial overlapping of the lower border of the mandible.

A stereosialographic study of developmental mandibular bone defects (Stafne's idiopathic bone cavities)

The purpose of the study was to investigate with the aid of stereosialography and orthopantomography, the connection between developmental mandibular bone defects and the submandibular salivary gland. In sialographies on seven patients, there were two cases in which the contrast medium was found, with certainty, to fill the lobe of the submandibular salivary gland in the area of the bone defect. In four cases the contrast medium ended in the immediate vicinity of the defect. In one case no conclusive result was obtained. The results of the study suggest that the developmental mandibular bone defect and the lobe of the submandibular salivary gland being in close contact with the lingual surface of the mandible have a probable etiologic causal connection, at least in a number of cases.

An orthopantomographic study of developmental mandibular bone defects (Stafne's idiopathic bone cavities)

The purpose of the present study was to investigate, on the basis of radiographs, the prevalence and special characteristics of developmental bone defects near the angle of the mandible among an adult population. Ten bone defects were observed in the 10,000 orthopantomograms studied, i.e. a prevalence of one per thousand in the total material. All defects were unilateral and occurred in men only. The mean age was 54 years and the age range 19 to 72 years. The diameter of the defects ranged from 8 to 22 mm, mean 12.8 mm. The largest cavities were seen in the oldest individuals of the series. In eight of the 10 cases the defect was above the inferior border of the mandible. One patient was followed-up for 3 years, and during this time neither the size nor the shape of the defect on the radiograph was seen to have changed.

Some anthropologic investigations of interest to oral surgeons

An intensive study of skull material of various origins from the large collection at the Department of Physical Anthropology, University of Cambridge, has resulted in the pooling of certain data likely to be of interest to oral surgeons. The investigation embraced differing racial units, but although patterns may vary with culture and geography it is unlikely that the specimens examined have shown significantly disparate trends. The specific series of investigations has included some subject matter which, hitherto, has received scant attention in the literature. Most of the samples used are possibly'larger than those of previous workers. The analysis includes a detailed reappraisal of Stafne's idiopathic bone cavity in the light of certain circumstantial evidence from skulls, together with a reference to comparative studies. In a multifarous survey of this nature, it is logical — for the sake of clarity and convenience — to deal with the various facets in sequence under separate subheadings. Much of the material appears in a tabulated form with appropriate comments. Patently, the positive results achieved in the skeletal investigation will have relevance to some aspects of surgical practice.

Unusual Response to Treatment of a Traumatic Bone Cyst: Report of Case

The patient had an idiopathic bone cavity of the mandible. The lesion was explored surgically, and diagnosis of a simple (traumatic) bone cyst was made. After the surgery, a nearby premolar underwent transient loss of pulpal response, and its pulp space calcified. The bony lesion healed. The patient had an idiopathic bone cavity of the mandible. The lesion was explored surgically, and diagnosis of a simple (traumatic) bone cyst was made. After the surgery, a nearby premolar underwent transient loss of pulpal response, and its pulp space calcified. The bony lesion healed.

Idiopathic bone cavities: A report of four cases

Four new cases of the so-called idiopathic bone cavity in the mandible have been reported. Each case was treated surgically, and the contents of the cavities were examined histologically in all cases with different results. In Case 1 lymphatic and fatty tissues were identified; in Cases 2 and 3 the bone cavities were empty and covered by a fibrous capsule; and in Case 4 the cavity contained fibrous and fibromatous connective tissue. The cause of such bone cavities is obscure.