https://oak.chosun.ac.kr/handle/2020.oak/18948 2026-04-09T20:29:06Z 2026-04-09T20:29:06Z Jin-ho Shin Chan Park https://oak.chosun.ac.kr/handle/2020.oak/19008 2024-04-29T07:31:23Z 2016-12-31T15:00:00Z

Title: Maxillary implant-supported overdenture with mesostructure abut-ment: A case report Author(s): Jin-ho Shin; Chan Park Abstract: Prosthesis that require and are connected to multiple internal implant fixtures, are often difficult to fabricate. Furthermore, if the angle is not appropriate, the implant may not be retrievable. In the current case, a bar implant overdenture was planned for a full-mouth restoration of a maxillary edentulous patient. However, the prosthesis was difficult to fabricate because of the improper buccolingual angulation of the implanted internal implant fixtures. Therefore, the internal implant fixture was replaced with an external implant prosthetic system, by connecting a `convertible abutment`, which is a type of mesostructure abutment. Following this, a bar attachment was made to fabricate the implant overdenture. In this paper, we report the results of this study by supplementing the limitation of the previous implant prosthesis system, and consequently obtaining functionally satisfactory results.

2016-12-31T15:00:00Z Young-gon Sun Young-tae Kim Xing-hui Piao Jong-wook Moon Young-joon Kim https://oak.chosun.ac.kr/handle/2020.oak/19004 2024-04-29T07:31:22Z 2016-12-31T15:00:00Z

Title: The effect of a novel botanical agent on early osteogenic response of osteoblasts Author(s): Young-gon Sun; Young-tae Kim; Xing-hui Piao; Jong-wook Moon; Young-joon Kim Abstract: A mixture of Panax notoginseng and Rehmannia glutinosa libosch (BT-301) is a synthetically developed novel botanical agent having anti-inflammatory properties. Previous studies have shown that BT-301 prevents the destruction of periodontal tissue by inhibiting the secretion of several cytokines (TNF-α, IL-6). It was also reported that Panax notoginseng and Rehmannia glutinosa libosch have a positive influence on osteoblastic cells. However, related literatures on Panax notoginseng and Rehmannia glutinosa libosch are rare. This study aimed to evaluate the cell proliferation and osteogenic effects of BT-301 on osteoblastic cells. In dose and time kinetic studies performed, MC3T3-E1 cells cultured in α-MEM medium were treated with varying concentrations of BT-301 (control, 0.156, 0.312, 0.625, 1.25, 2.5 mg/ml), and incubated for 1, 3, and 5 days. Cell proliferation was assessed by the MTT assay. Alkaline phosphatase (ALP) activity of MC3T3-E1 cells was measured on day 7. Results show that MC3T3-E1 cells exposed to BT-301 at 0.156 mg/ml and 0.312 mg/ml concentrations, showed greater cell proliferation on day 3 (p<0.05). We conclude that correct exposure to the optimal concentration of BT-301 has a positive effect on bone healing.

2016-12-31T15:00:00Z Mi-ri Kim Sang-ho Lee Nan-young Lee Myeong-kwan Jih Young-mi Yoon Yu-jin Lim https://oak.chosun.ac.kr/handle/2020.oak/19007 2024-04-29T07:31:23Z 2016-12-31T15:00:00Z

Title: Green pigmentation on both deciduous and permanent dentition of a biliary atresia patient: A case report Author(s): Mi-ri Kim; Sang-ho Lee; Nan-young Lee; Myeong-kwan Jih; Young-mi Yoon; Yu-jin Lim Abstract: Biliary atresia is a rare disease, and it is defined as partial or total absence of the biliary tract. If not treated, this disease may cause death within 5 years. Treatment methods for biliary atresia include conservative methods and surgical methods, such as a Kasai operation or/ and liver transplantation. Oral symptoms associated with biliary atresia are green pigmented teeth, enamel hypoplasia, rampant caries, enlargement of the pulp chamber and root canals, and delayed eruption of teeth. Among these symptoms, green pigmentation of teeth is the most significant and unesthetic complication affecting a child`s social psychology. The majority of case reports about green pigmented teeth caused by biliary atresia showed that it affected the deciduous dentition rather than the permanent dentition. This case report describes the dental management of a patient with biliary atresia, who had undergone liver transplantation at age two years, and presented with green pigmentation in both deciduous and permanent dentition.

2016-12-31T15:00:00Z Do-hee Kim Hyun-ju Chung Ok-su Kim https://oak.chosun.ac.kr/handle/2020.oak/19005 2024-04-29T07:31:22Z 2016-12-31T15:00:00Z

Title: The prevalence of periodontal disease according to oral care habits Author(s): Do-hee Kim; Hyun-ju Chung; Ok-su Kim Abstract: Periodontal disease is one of the most common chronic diseases. Even though scaling and root planing are helpful for preventing periodontal disease, most people overlook it. So, the purpose of this study was to investigate oral care habits and the prevalence of periodontal disease to improve disease prevention and oral healthcare. This study was based on subpopulation of Donggu, Gwangju, Korea, for people older than 50, where oral examination and panoramic radiography were performed. Oral examination included O`Leary index, BOP (Bleeding on Probing), PD (Probing Depth), and CAL (Clinical Attatchment level). The subjects were 4025 people who responded to a oral health questionnaire. The prevalence of periodontal disease in the subjects were 10.3%, 56.1%, and 33.6% for slight, moderate, and severe periodontitis, respectively. The prevalence of periodontal disease was higher in men and older aged people in general. With respect to oral care habits, when subjects visited a dental center regularly and used oral hygiene devices, the ratio of the O`Leary Index was over 75%, the BOP was less than 25%, and severe PD and CAL (≥7 mm), and the prevalence of periodontal disease was less. Since the prevalence of periodontal disease was higher in male and increased with age, self-motivation about oral care habits, regular dental visits and oral care, such as scaling, root planning, and tooth brushing, are required for these groups. In addition, use of oral hygiene devices, such as dental floss and interdental brushes, is also.

2016-12-31T15:00:00Z