Treatment of a lateral incisor anatomically complicated with palatogingival groove / 대한치과보존학회지

OBJECTIVES: Palatogingival groove is a developmental anomaly that starts near the cingulum of the tooth and runs down the cementoenamel junction in apical direction, terminating at various depths along the roots. While frequently associated with periodontal pockets and bone loss, pulpal necrosis of these teeth may precipitate a combined endodontic-periodontal lesion. This case presents a case of a lateral incisor anatomically complicated with palatogingival groove. METHODS: Two patients with lesion associated with the palatogingival groove were chosen for this report. Palatogingival grooves were treated with different restoration materials with endodontic treatment. CONCLUSIONS: Maxillary lateral incisor with a palatogingival groove may occur the periodontal disease with pulpal involvement. Elimination of groove may facilitate the periodontal re-attachment and prevent the recurrence.

The comparison of different canal irrigation methods to prevent reaction precipitate between sodium hypochlorite and chlorhexidine / 대한치과보존학회지

The purpose of this study was to compare the different canal irrigation methods to prevent the formation of precipitate between sodium hypochlorite (NaOCl) and chlorhexidine (CHX). Extracted 50 human single-rooted teeth were used. The root canals were instrumented using NiTi rotary file (Profile .04/#40) with 2.5% NaOCl and 17% EDTA as irrigants. Teeth were randomly divided into four experimental groups and one control group as follows; Control group: 2.5% NaOCl only, Group 1: 2.5% NaOCl + 2% CHX, Group 2: 2.5% NaOCl + paper points + 2% CHX, Group 3: 2.5% NaOCl + preparation with one large sized-file + 2% CHX, Group 4: 2.5% NaOCl +95% alcohol+ 2% CHX. The teeth were split in bucco-lingual aspect and the specimens were observed using Field Emission Scanning Electron Microscope. The percentages of remaining debris and patent dentinal tubules were determined. Statistical analysis was performed with one-way analysis of variance (ANOVA). Energy Dispersive x-ray Spectroscopy was used for analyzing the occluded materials in dentinal tubule for elementary analysis. There were no significant differences in percentage of remaining debris and patent tubules between all experimental groups at all levels (p > .05). In elementary analysis, the most occluded materials in dentinal tubule were dentin debris. NaOCl/CHX precipitate was detected in one tooth specimen of Group 1. In conclusion, there were no significant precipitate on root canal, but suspected material was detected on Group 1. The irrigation system used in this study could be prevent the precipitate formation.

A Case of Gastric Candidiasis Presented as Subepithelial Mass in an Immunocompromised Host / 대한소화기학회지

Hepatosplenic candidiasis is also called chronic disseminated candidiasis and usually seen in patients with hematologic malignancies who have just recovered from an episode of neutropenia. Gastric candidiasis most commonly present as a mucosal lesion such as an ulcer or erosions, but other gastric lesion is very rare. We experienced a case of gastric candidiasis which presented as gastric subepithelial mass in a 60-year old woman who had undergone the 2nd consolidation chemotherapy due to acute myeloid leukemia. The pathologic diagnosis was confirmed by fine needle aspiration of the gastric subepithelial mass under the guidance of endoscopic ultrasonography.