Comparison of arch forms between Korean and Japanese in Class I, II, and III malocclusion / 대한치과교정학회지

OBJECTIVE: The purpose of this study was to compare arch dimensions and frequency distribution of arch forms between Korean and Japanese Class I, II, and III malocclusion groups. METHODS: The sample consisted of 368 Korean cases (114 Class I, 119 Class II, and 135 Class III malocclusion) and 160 Japanese cases (60 Class I, 50 Class II, and 50 Class III malocclusion). The most facial portion of 13 proximal contact areas was digitized from photocopied images of the mandibular dental arches. Clinical bracket slot points were calculated for each tooth based on mandibular tooth thickness data. Four linear and two proportional measurements were taken. Measurements are statistically analyzed in each malocclusion group. The dental arches were classified into square, ovoid, and tapered forms to determine and compare the frequency distributions between the two ethnic groups. RESULTS: The findings of this study showed that Japanese females in Class I and II groups had a statistically significant narrower mandibular dental arch width compared with the Japanese males, Korean males and Korean females. But in the Class III group, there was no significant difference in the mandibular dental arch size according to the two ethnic groups and genders. CONCLUSIONS: The majority of Koreans and Japanese in all the malocclusion groups exhibited square and ovoid arch forms. The most frequent arch forms found in Koreans was square but ovoid for Japanese.

A case of chorioangioma of placenta complicated by fetal anemia and fetal hydrops / 대한산부인과학회지

Benign chorioangioma of the placenta is the most common primary tumor of the placenta similar to hamartoma. Most small-sized tumors do not make any clinical problem, but uncommon large tumors (>5 cm in diameter) may produce both maternal and fetal complications, such as polyhydramnios, preterm labor, fetal hydrops, microangiopathic hemolytic anemia, disseminated intravascular coagulation, intrauterine growth restriction, preeclampsia and placental abruption. In this respect, the diagnosis and management of chorioangioma and its complication should be done appropriately. We report a case of chorioangioma presenting with polyhydramnios, preterm labor, fetal anemia and fetal hydrops, diagnosed by antenatal ultrasonography and postnatal placental histologic examination, and live born baby with the brief review of the literature related to this type of tumor.

Torsion of the Isolated Fallopian Tube in an Adolescence: A Case Report / 대한산부인과학회지

Torsion of the fallopian tube is an uncommon cause for acute low abdominal pain in female that is difficult to diagnose. Because it has no pathognomonic clinical symptoms or laboratory findings, a high index of suspicion is important when there is history of pelvic pathologic conditions or surgery. The early diagnosis and surgical treatment of the disease are mandatory to preserve oviduct.

Clinical Efficacy of Low-dose Aspirin and Prednisolone in Controlled Ovarian Hyperstimulation for In Vitro Fertilization and Embryo Transfer / 대한산부인과학회지

OBJECTIVE: To determine whether the use of low-dose aspirin and prednisolone in controlled ovarian hyperstimulation (COH) with GnRH agonist long protocol improves the outcomes of in vitro fertilization and embryo transfer (IVF-ET). METHODS: Two hundred and forty IVF-ET cycles were assigned to four groups: control group (aspirin(-) and prednisolone(-), n=59), low-dose aspirin group (aspirin(+) and prednisolone(-), n=43, Group 1), prednisolone group (aspirin(-) and prednisolone(+), n=80, Group 2), and low-dose aspirin and prednisolone group (aspirin(+) and prednisolone(+), n=58, Group 3). The COH and pregnancy outcomes were retrospectively compared among the four groups. RESULTS: Group 1 showed higher fertilization rate with a borderline significance compared to control group (73.6% vs. 64.1%, p=0.050). Serum estradiol (E2) level on hCG day was 995.5+/-767.5 pg/mL in control group, 1,550.7+/-1,254.5 pg/mL in group 1, 1,469.2+/-1,206.6 pg/mL in group 2 and 1,796.0+/-1,548.0 pg/mL in group 3 and higher in the three treatment groups compared to control (p=0.012, p=0.006, p<0.001, respectively). Embryo score per transferred embryo was also higher in Group 1 (17.4+/-8.4, p=0.001) and 3 (16.0+/-6.1, p<0.001) compared to control (12.2+/-5.1). There were no significant differences in the implantation and the pregnancy rates among the four groups. CONCLUSION: The use of low-dose aspirin or prednisolone may be beneficial in IVF-ET patients undergoing COH with GnRH agonist long protocol. Further larger-scale prospective randomized investigations are necessary to confirm these findings.