ABSTRACT
Cistos periodontais laterais são entidades relativamente raras que acometem preferencialmente a mandíbula na região de pré-molares. Este cisto tem origem durante o desenvolvimento e se apresenta entre as raízes dos elementos dentais envolvidos, sem, contudo, provocar qualquer envolvimento pulpar. Clinicamente, este se apresenta assintomático e, em alguns casos, com discreto aumento de volume, normalmente descoberto nos exames radiográficos de rotina. Radiograficamente, observa-se uma lesão radiolúcida, semelhante a uma lesão periapical, o que pode gerar erros durante o diagnóstico inicial da lesão. Este relato de caso apresenta um cisto periodontal lateral em incisivo lateral superior em um adulto do sexo masculino de 32 anos. O diagnóstico histológico confirmou a presença do cisto odontogênico, o qual foi tratado com enucleação total. O paciente foi acompanhado por um ano, sendo observada radiograficamente a neoformação óssea e a ausência de recorrência do cisto.
Lateral Periodontal Cysts are relatively rare pathologic entities which preferably affect the mandibular pre-molars region. This cyst has an origin during development and is located between the roots of affected teeth, without cause any pulpar damage. Clinically, it shows asymptomatic development and could lead to a local increasing. Usually are discovered during routine radiographic exams, showing a radiolucid image, similar to a periapical lesion, what could lead to wrongs in the initial diagnosis. The present case report documented a Periodontal Lateral Cyst in upper lateral incisor in a 32-years man. The histological analysis confirms the diagnosis of odontogenic cyst which was totally enucleated. The present case had a 1-year follow-up, showing the new bone formation and absence of recidive.
Subject(s)
Humans , Male , Adult , Periodontal Cyst/diagnosis , Curettage/rehabilitation , RadiographyABSTRACT
The aim of this in vitro study was to evaluate the susceptibility of a hybrid composite resin (Filtek Z250 - 3M ESPE) to staining, when light cured in four different modes and immersed in two different media. Composite resin specimens were randomly prepared and polymerized according to the experimental groups (conventional - 550 mW/cm² / 30 seconds; soft start - 300mW/cm² / 10 seconds + 550 mW/cm² / 20 seconds; high intensity - 1060 mW/cm² - 10 seconds; pulse delay - 550 mW/cm² - 1 seconds + 60 seconds of waiting time + 550 mW/cm² - 20 seconds) and immersed in one of two media (distilled water or absolute ethanol) for 24h. Next, the specimens were immersed in a 2 percent methylene blue solution for 12 hours. Afterwards, the specimens were washed and prepared for the spectrophotometric analysis. For statistical analysis, two-way ANOVA (4X2) and Tukey's test were performed on the data at 0.05 confidence level. Soft start showed the least staining, and was statistically different from the high intensity and pulse delay light curing modes (p<0.05). Conventional light curing unit did not show statistically significant differences from any other groups (p>0.05). There were no significant differences between the two immersion media (p>0.05). The soft start polymerization mode showed lower susceptibly of the composite resin to staining than high intensity and pulse delay, irrespective of the immersion medium.