1.Retrospective Study of the Mandibular Condyle Fracture in Children and Young Adolescents
Sooji CHOI ; JeongKeun LEE ; SeungIl SONG ; Seunghye KIM
Journal of Korean Academy of Pediatric Dentistry 2020;47(1):1-8
The aim of this retrospective study was to investigate etiology, clinical features, and treatment modalities of the mandibular condyle fracture in children and young adolescents. This study was conducted based on medical records and radiographic examinations of 44 pediatric patients. Patients received treatment under diagnosis of mandibular condylar fracture. They were divided into 4 groups according to their age. The involvement of condyle in the mandible fracture occurred in higher percentage in younger age groups. Falling was the most common etiologic factor in all age group, especially in children with age under 7. Condyle head was the most frequent site of fracture in age group of 4-7 whereas fracture tends to occur in lower condylar areas in older groups. In 54.5% of the mandibular condyle fracture, symphysis fracture was accompanied. Teeth injury occurred in higher incidency when condyle fracture accompanied symphysis fracture. Conservative treatments were applied to 43 out of 44 patients.
2.Enamel Renal Syndrome: A Case Report of Amelogenesis Imperfecta Associated with Nephrocalcinosis
Sooji CHOI ; Young Bae SOHN ; Suk JI ; Seungil SONG ; Jeongwon SHIN ; Seunghye KIM
Journal of Korean Academy of Pediatric Dentistry 2020;47(3):344-351
Amelogenesis imperfecta (AI) occurs either in isolation or in association with other dental abnormalities and systemic disorder. A rare syndrome associating AI with nephrocalcinosis was named as Enamel Renal Syndrome (ERS; OMIM #204690). This syndrome is characterized by severe enamel hypoplasia, failed tooth eruption, intra pulpal calcifications, enlarged gingiva, and nephrocalcinosis. Nephrocalcinosis is a condition where calcium salts are deposited in renal tissue, and this may lead to critical kidney complications. This rare syndrome shows pathognomonic oral characteristics that are easily detectable at an early age, which proceeds the onset of renal involvement. Pediatric dentists are the first oral health practitioners whom ERS patients will meet at early age. The role of pediatric dentists is critically important for early diagnosis and referral of patients to both nephrologists for renal assessment and geneticists for identification of causative mutation and diagnosis. Early detection of renal involvement may provide chances to prevent further undesired renal complications.
3.High Prevalence of Enterobius vermicularis Infection among Schoolchildren in Three Townships around Yangon, Myanmar.
Jong Yil CHAI ; Seung Koo YANG ; Jae Won KIM ; Soo Lyoen CHOI ; Gyu Young SONG ; Bong Kwang JUNG ; Min Jae KIM ; Jaeeun CHO ; Deok Gyu KIM ; Woon Mok SOHN ; Hoo Gn JEOUNG ; Seon CHO ; Jong Bok PARK ; Sooji HONG ; Thi Thi HTOON ; Htay Htay TIN
The Korean Journal of Parasitology 2015;53(6):771-775
In order to determine the status of Enterobius vermicularis infection among schoolchildren in suburban areas of Myanmar, 761 primary schoolchildren in 3 different townships around Yangon City were subjected to a survey using cello-tape anal swabs. The subjected schoolchildren were 383 boys and 378 girls who were 5-7 years of age. Only 1 anal swab was obtained from each child. The overall egg positive rate of E. vermicularis was 47.2% (359 positives), and sex difference was not remarkable (48.6% in boys and 45.8% in girls). However, the positive rate was the highest in South Dagon (54.6%) followed by Hlaing Thayar (43.8%) and North Dagon (34.8%). This difference was highly correlated with the living standards of the people in each township. Nucleotide sequence of the 5S rDNA from the eggs on the cello-tape (2 children) revealed 99.7% identity with that of E. vermicularis reported in GenBank. The results indicated that E. vermicularis infection is highly prevalent among primary schoolchildren around Yangon, Myanmar.
Animals
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Child
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Child, Preschool
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Enterobiasis/diagnosis/*epidemiology/*parasitology
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Enterobius/genetics/*isolation & purification
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Female
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Humans
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Male
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Myanmar/epidemiology
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Parasite Egg Count
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Prevalence
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Students/statistics & numerical data
4.Prevalence and Intensity of Opisthorchis viverrini Metacercarial Infection in Fish from Phnom Penh, Takeo, and Kandal Provinces, Cambodia
Woon-Mok SOHN ; Seung-Ho CHOI ; Bong-Kwang JUNG ; Sooji HONG ; Seungwan RYOO ; Taehee CHANG ; Keon Hoon LEE ; Byoung-Kuk NA ; Sung-Jong HONG ; Virak KHIEU ; Jong-Yil CHAI
The Korean Journal of Parasitology 2021;59(5):531-536
The prevalence and intensity of Opisthorchis viverrini metacercariae (OvMc) were investigated in fish from 3 southern administrative regions along the Mekong River in Cambodia, i.e., Phnom Penh, Takeo, and Kandal Provinces from 2017 to 2020. A total of 295 freshwater fish (24 species) were transported to our laboratory with ice and examined using the artificial digestion method. In Phnom Penh, among 4 fish species positive for OvMc, 9 (23.7%) of 38 specimens examined were infected, and their intensity of infection averaged 4.3 metacercariae per infected fish. In Takeo Province, among 10 fish species positive for OvMc, 24 (38.1%) out of 63 fish examined were infected, and their intensity of infection was av. 14.4 metacercariae per infected fish. In particular, all of 3 Osteochilus schlegelii fish examined were infected, and their infection intensity was high, 34.7 metacercariae per fish. In Kandal Province, among 6 fish species positive for OvMc, 46 (90.2%) out of 51 specimens examined were infected, and their infection intensity was 24.0 metacercaraie per infected fish. All fish of Systomus orphoides (n=17), Barbonymus altus (n=14), and Rasbora aurotaenia (n=2) were infected, and their intensity of infection averaged 37.7, 21.6, and 18.5 metacercariae per fish, respectively. Metacercariae of Haplochis yokogawai, Haplorchis taichui, and Centrocestus formosanus were detected in fish from Takeo and Kandal Provinces. From these results, it has been confirmed that a variety of fish species from Phnom Penh, Takeo, and Kandal Provinces are commonly infected with OvMc, and preventive measures to avoid human O. viverrini infection should be performed in Cambodia.