Relationship between the presence of clefts of cholesterol crystals in periapical lesion and serum cholesterol level
Relação entre presença de fendas de cristais de colesterol em lesão periapical e nível de colesterol sérico
Silva, Vanessa Tavares da; Piva, Marta Rabello; Souza, Liane Maciel de Almeida; Amorim, Klinger de Souza; Groppo, Francisco Carlos
http://dx.doi.org/10.1590/S1807-25772013000200005
Rev. odontol. UNESP, vol.42, n2, p.94-98, 2013
Abstract
A chronic infection in periapical tissue can trigger a periapical lesion due to stimulation and proliferation of epithelial rests of Malassez. On microscopic study, it is possible to detect the presence of clefts of cholesterol crystals within cysts and granulomas. According to some studies, the source of cholesterol inside the periapice lesions may be partially due to the condensation and crystallization of cholesterol in the cyst wall. Yet another part, can be derived metabolic products local or vascular circulation. Objective: This study aimed to analyze the relationship between the clefts of cholesterol crystals found in periapical lesions and cholesterol levels in the blood circulation. Material and method: An observational study of a descriptive nature that included 70 patients with periapical lesions (according to radiographic examination) at the Department of Dentistry, Federal University of Sergipe. These patients underwent extraction of the affected tooth unit and removal of the periapical lesion, and this number sent for pathological examination. At the same query was asked a lipid profile to assess rates of serum cholesterol of patients. Result: Clefts of cholesterol crystals were present only in cysts (larger than 1.5 cm in diameter, approximately), and therefore older. Conclusion: The presence of cholesterol crystals is rare in periapical lesions. The study suggests a relationship between the presence of cholesterol crystals and the rate of cholesterol serum levels in large and old injuries.
Keywords
Radicular cyst, periapical granuloma, cholesterol.
Resumo
Uma infecção crônica nos tecidos periapicais pode desencadear uma lesão periapical em função da estimulação e da proliferação dos restos epiteliais de Malassez. Ao estudo microscópico, é possível detectar a presença de fendas de cristais de colesterol no interior de cistos e granulomas. De acordo com alguns estudos, a origem do colesterol no interior de lesões no periápice pode ser, parcialmente, por causa da condensação e da cristalização de colesterol dentro da parede do cisto. Outros estudos afirmam que a presença de colesterol pode ser derivada de produtos metabólicos locais ou da circulação vascular. Objetivo: O presente estudo teve por objetivo analisar a relação entre as fendas de cristais de colesterol encontradas nas lesões periapicais e os níveis de colesterol sérico. Material e método: Estudo observacional de natureza descritiva, que incluiu 70 pacientes portadores de lesões periapicais, de acordo com exame radiográfico, atendidos no Departamento de Odontologia da Universidade Federal de Sergipe. Esses pacientes foram submetidos à exodontia da unidade dentária acometida e à remoção da lesão periapical, sendo esta peça encaminhada para exame anatomopatológico. Na mesma consulta, era solicitado um lipidograma para avaliação das taxas de colesterol sérico dos pacientes. Resultado: Fendas de cristais de colesterol estavam presentes apenas em cistos grandes (maiores que 1,5 cm de diâmetro, aproximadamente) e, portanto, mais antigos. Conclusão: A presença de cristais de colesterol é rara nas lesões periapicais. O estudo sugere uma relação entre a presença dos cristais de colesterol e o índice de colesterol sérico elevado, em lesões grandes e antigas.
Palavras-chave
Cisto radicular, granuloma periapical, colesterol.
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