2020 Volume 58 Issue 2 Pages 67-73
There are many types of soft tissue diseases that affect children, one of which is foreign bodies entering the soft tissue. Calcium hydroxide root canal material is used as a root canal filling agent for deciduous teeth, but due to its property, leakage of the root canal filling paste from the root apex can accidentally occur during dental treatment. We report a case of a white spot that occurred in the gingiva after root canal filling treatment for the maxillary left deciduous central incisor which did not disappear for 4 years. The patient visited a hospital complaining of aesthetic disorders.
From the current medical history and laboratory findings, the white spot was diagnosed to be an extraneous foreign body and was removed. A histopathological examination showed that the removed foreign material may have been residual root canal filling material. As a result of analyzing the components of the foreign matter, elements such as barium, sulfur, titanium, silicon, aluminum and sodium were detected. We also analyzed several root canal treatment materials. The components of the white spot were consistent with many components of CalcipexⅡ®.
When calcium hydroxide is filled into the root of a deciduous tooth, it is absorbed together when the permanent tooth erupts. The root canal filling paste that leaks from the apex is also absorbed with time. However, components other than calcium hydroxide may remain. Dentists need to pay attention to the pressure at the time of root canal treatment, and to follow up after treatment.
