We treated a case of eruption sequestrum in an 8-year 1-month old boy. The patient first came to our clinic with a chief complaint of discomfort in the mandibular. The literature relating to so-called eruption sequestra is reviewed. Two cases in which there were calcified fragments adjacent to the crowns of all four first. Eruption Sequestrum is an unusual disturbance, which consists of fragments of calcified mass overlying the crown of erupting permanent mandibular molar teeth .

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Although ES is rare, it is important to describe its clinical and histological findings for helping clinicians diagnose this condition erutpion updating microscopic descriptions. December Learn how and when to remove this template message.

Thus, a small osseous fragment can sequestrjm separate from the contiguous bone and emerge through the alveolar bone. Spongy osseous tissue with an inflammatory cell infiltrate and empty lacuna-like spaces were also identified, in accordance to similar preliminary findings 7.

Bone fractures Gross pathology. This page was last edited on 27 Octoberat By using this site, you agree to the Terms of Use and Privacy Policy. In sequestum cases, the small bone fragments are absorbed completely prior to eruption of the molar. Due to the avascular nature of this bone, antibiotics which travel to sites of infection via the bloodstream poorly penetrate seqkestrum tissues, hence the difficulty in treating chronic osteomyelitis.

Ischaemia Avascular necrosis Osteonecrosis of the jaw Algoneurodystrophy Hypertrophic pulmonary osteoarthropathy Nonossifying fibroma Pseudarthrosis Stress fracture Fibrous dysplasia Monostotic Polyostotic Skeletal fluorosis bone cyst Aneurysmal bone cyst Hyperostosis Infantile cortical hyperostosis Osteosclerosis Melorheostosis Pycnodysostosis.

The extracted fragment was preserved in formalin for 72 h and submitted to histological processing for microscopic analysis. J Clin Pediatr Dent ; Na periferia, sinais de necrose foram evidenciados. The aim of this paper is to report a case of unilateral ES in a 7-year-old Brazilian boy and to describe its histopathological findings. Microscopic examination revealed large trabeculae with empty lacunae and a minimal amount of existing spongy bone consisting of acute inflammatory cells neutrophils.

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However, no signs of viable bone were evident throughout the specimen.

At the 1-week postoperative appointment, the patient was evaluated clinically, although no significant signs and symptoms were revealed. The histological analysis was consistent with non-vital bone and the diagnosis of eruption sequestrum was erupfion.

All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License. Intraoral examination revealed a small white fragment, approximately 0. Eruption sequestrae – three case reviews.

Eruption sequestrum | definition of eruption sequestrum by Medical dictionary

The histological diagnosis was ES Fig. After completion of the treatment, follow-up visits were scheduled every 6 months for monitoring dental plaque control as well as for clinical and radiographic assessment Fig. This major occurrence in mandibular first molars can be due to these teeth with an ectopic path of eruption, with the mesial cusps at some stage lying mesial to the distal root of the second primary molar 3.

At the same time as this, new bone is forming known as involucrum. Openings in this involucrum allow debris and exudates including pus to pass from the sequestrum via sinus tracts to the skin. A white small fragment, 0.

This article sequeztrum not cite any sources. The sequestra are surrounded by sclerotic bone which is relatively avascular without a blood supply. The microscopic analysis showed non-viable bone tissue of large trabeculae with empty lacunae, evidenced by lack of osteocytes in the lacunae.

In the same case, histopathological examination showed non-vital bone, as reported elsewhere 1,2,5.


Br Dent J ; Ann Acad Med Singapore ; Although ES has been reported as a fragment consisting of compact, non-viable bone 1,2,5Watkins 3 described a case composed of dentin and covered in areas by fragments of bacteria-infected cementum. Although previously thought to have little clinical significance 1ES may retain biofilm accumulation and lead to pericoronitis, localized swelling, discomfort during mastication, and demineralization or dental caries if it remains for a prolonged time 2.


The treatment plan included surgical removal of this fragment. Osteitis fibrosa cystica Brown tumor. Articles lacking sources from December All eduption lacking sources. Please help improve this article by adding citations to reliable sources. Views Read Edit View history.

As its early recognition is important for preventing a future inadequate surgical intervention, the fragment was removed surgically in this patient, as in other cases 2. Within the bone itself, the haversian canals become blocked with scar tissue, and the bone becomes surrounded by sqeuestrum periosteum.

Sequestrum – Wikipedia

This can occur due to reduction of osteoclast activity and of bone resorption mediated by dental follicle during tooth eruption caused by apoptosis of reduced enamel epithelium 4. ES is a mass coronally of the erupting tooth with broader borders 3. Apoptosis of the reduced enamel epithelium and its implications for sequeetrum resorption during tooth eruption. Figures 1 to 3 illustrate the clinical and histopathological features of the case. A biopsy of the area was excised under local anesthesia.

The pathological process is as follows:. ES is an uncommon clinical finding. Osteolysis Hajdu-Cheney syndrome Ainhum. An unusual eruption sequestrum. Signs of necrosis were observed on the periphery.

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In addition, Maki et al. ES may also be retained by tissue covering the distal marginal ridge of an erupting tooth 2. Priddy RW, Price C.