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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How to cite this article. At the same time as this, new bone is forming known as involucrum. There was neither history of pain nor evidence of dental caries or abnormality in other soft tissues. Thus further investigations should be performed to elucidate its microscopic aspects. Articles lacking sources from December All articles lacking sources.

Eruption sequestrum – case report and histopathological findings

J Dent Child ; Informed written consent was obtained from the patient’s mother and this report was approved by the institutional Ethics Committee Protocol In most cases, the small bone fragments are absorbed completely sequesturm to eruption of the molar. 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. Although ES has been reported as a fragment consisting of compact, non-viable bone 1,2,5Watkins eru;tion described a case composed of dentin and covered in areas by fragments of bacteria-infected cementum.

Spongy osseous tissue with an inflammatory cell infiltrate and empty lacuna-like spaces were also identified, in accordance to similar preliminary findings 7. This paper reports a case of unilateral eruption sequestrum in a 7-year-old Brazilian boy and describes its histopathological findings.

The pathological process is as follows:. 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. Rarely, a sequestrum may turn out to be an osteoid osteomaa rare tumor of the bone. December Learn how and when to remove this template message. From Wikipedia, the free encyclopedia. ES is usually observed at the time of eruption of the mandibular first molars, but it has been noted occurring with maxillary first molars and mandibular second molars 1,2.


The sequestra are surrounded by sclerotic bone which is relatively avascular without a blood supply.

If seen radiographically before tooth eruption, its intraoral appearance may be predicted 1. No significant medical condition was reported.

Eruption sequestrum–case report and histopathological findings.

Services on Demand Journal. In addition, Maki et al. The so-called eruption sequestrum. Received May 22, Accepted November 8, The biopsy tissue was composed of a 0. An unusual eruption sequestrum. A white small fragment, 0. Unsourced material may be challenged and removed. Clinical and radiographic follow-up visits scheduled at short intervals and then every 6 months revealed normal postoperative conditions.

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. ES consists of a small irregular bone spicule, but it can also correspond to the occlusal anatomy of teeth 2. All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License. At the 1-week postoperative appointment, the patient was evaluated clinically, although no significant signs and symptoms were revealed.

A minimal amount of existing spongy bone consisted of acute inflammatory cells infiltrate neutrophils. The extracted fragment was preserved in formalin for 72 h and submitted to histological processing for microscopic analysis. Periapical radiograph did not show adequately this fragment. Retrieved from ” https: 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.


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ES is a mass coronally of the erupting tooth with broader borders 3. Microscopic examination revealed large trabeculae with empty lacunae and a minimal amount of existing spongy bone consisting of acute inflammatory cells neutrophils.

Thus, a small osseous fragment can occasionally separate from the contiguous bone and emerge through the alveolar bone. However, when the fragments are large or the eruption speed is slow, small bone fragments on the sequestgum surface remain unresorbed and exposed to the mucosa prior to molar eruption, which forms ES 1.

Signs of necrosis were found on the periphery. ES may also be retained by tissue covering the distal marginal ridge of an erupting tooth 2.

Figures 1 to 3 illustrate the clinical and histopathological features of the case. In the same case, histopathological examination showed non-vital bone, as reported elsewhere 1,2,5. However, no signs of viable bone were evident throughout the specimen. Intraoral examination revealed a small white fragment, approximately 0.

Ann Acad Med Singapore ; It is a complication sequela of osteomyelitis. This major occurrence in mandibular sequestrjm molars can be due to these teeth with an ectopic path of eruption, with rruption mesial cusps at some stage lying mesial to the distal root of the second primary molar 3.