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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The biopsy tissue was composed of a 0.

As its early rruption is important for preventing a future inadequate surgical intervention, the fragment was removed surgically in rruption patient, as in other cases 2. There was neither history of pain nor evidence of dental caries or abnormality in other soft tissues. In addition, Maki et al. This article does not cite any sources.

The sequestra are surrounded by sclerotic bone which is relatively avascular without a blood supply. ES may also be retained by tissue covering the distal marginal ridge of zequestrum erupting tooth 2. Thus, a small osseous fragment can occasionally 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. J Clin Pediatr Dent ; Signs of necrosis were observed on the periphery. Intraoral examination revealed a small white fragment, approximately 0.

Eruption sequestrum–case report and histopathological findings.

Due to the avascular nature of this bone, antibiotics which travel to sites of infection via the bloodstream poorly penetrate these tissues, hence the difficulty in treating chronic osteomyelitis.

Na periferia, sinais de necrose foram evidenciados. The treatment plan included surgical removal of this fragment. Within the bone itself, the haversian canals become blocked with scar tissue, and the bone becomes surrounded by thickened periosteum. The so-called eruption sequestrum.


ES consists of a small irregular bone spicule, but it can also correspond to the occlusal anatomy of teeth 2. However, when the fragments are large or the eruption speed is slow, small bone fragments on the occlusal surface remain unresorbed and exposed to the mucosa prior to molar eruption, which forms ES 1.

A white small fragment, 0. In the same case, histopathological examination showed non-vital bone, as reported elsewhere 1,2,5. Openings in this involucrum allow debris and exudates including pus to pass from the sequestrum via sinus tracts to the skin.

All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License. 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.

Br Eruptioj J ; Thus further investigations should be performed to elucidate its microscopic aspects. In an unusual case of ES, the specimen consisted of a small irregular calcified mass, composed of dentin and covered in areas by fragments of bacteria-infected cementum 3.

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. Eruption sequestrum ES is an uncommon condition first reported as an osseous fragment overlying the crown of an erupting permanent molar prior to or immediately after the emergence of the cuspal tips through the oral mucosa 1. No significant medical condition was sequedtrum. This page was last edited on 27 Octoberat However, no signs of viable bone were evident throughout the specimen.

It is usually associated with the permanent mandibular first molar 1,3,as described in the patient of this case. 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. Osteitis fibrosa cystica Brown tumor. The pathological process is as follows:.


In most cases, the small bone fragments are absorbed completely prior to eruption of the molar. Unsourced material may be challenged and removed. An unusual eruption sequestrum. Signs of necrosis were seuestrum on the periphery.

The histological analysis was consistent with non-vital bone and the diagnosis of eruption sequestrum was established. Views Read Edit View history. A biopsy of the area was excised under local anesthesia.

Eruption sequestrum – case report and histopathological findings

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. 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. J Dent Child ; From Wikipedia, the free encyclopedia.

The microscopic analysis showed non-viable bone tissue of large trabeculae with empty lacunae, evidenced by lack of osteocytes in the lacunae. Priddy RW, Price C. Eruption sequestrum – case report and histopathological findings.

The extracted fragment was preserved in formalin for 72 h and submitted to histological processing for microscopic analysis. Bone and joint disease M80—M94— Eruption sequestrum is an uncommon disturbance in eruption and consists of small fragments of calcified tissue overlying the crowns of erupting permanent molar teeth, especially at the time of eruption of the mandibular first molars.

If seen radiographically before tooth eruption, its intraoral appearance may be predicted 1. ES is a mass coronally of the erupting tooth with broader borders 3.