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- 저자 : 성건화 ( Kun Hwa Sung ) (검색결과 5 건)
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성건화(Kun-Hwa Sung),민정범(Jeong-Bum Min),박태영(Tae-Young Park) 대한치과의사협회 2020 대한치과의사협회지 Vol.58 No.8
Objectives: Management of a horizontal root fracture of an anterior teeth is challenging and often requires multiple approaches for improving the functional and esthetic outcomes. This case report describes the treatment and 2-yr follow up of 3 maxillary incisors with horizontal root fracture. Two maxillary central incisors were treated with Mineral Trioxide Aggregate (ProRoot MTA, Dentsply, Tulsa, OK, USA). Left maxillary lateral incisors were treated with endodontic treatment and submerged. During 2-yr of follow-up evaluation, the root-fractured teeth of the present patients were well retained in the arch, showing periodontal healing even after endodontic treatment.
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생체막 제거 방법에 따른 비우식성 치경부 병소의 미세인장강도 비교
성건화(Kun-Hwa Sung),민정범(Jeong-Bum Min),박태영(Tae-Young Park) 대한치과의사협회 2020 대한치과의사협회지 Vol.58 No.11
Dentin surface of non-carious lesion is usually attached with oral biofilm. The biofilm should be removed before application of restorative material, because it may reduce the bond strength of adhesive system. The aim of this study was to evaluate the microtensile bond strength, when the biofilm was removed with brush or bur. Twenty extracted human third molars were sectioned horizontally to obtain dentin surface. Specimen were divided randomly into four group. Biofilm formation was performed in three group, except for Group 1 (negative control). Biofilm was removed as follows: Group 3, using ICB brush; Group 4, using lowspeed round bur #2. Group 2 (positive control) was not removed Biofilm. And in all four groups, the adhesive system (Optibond FL, Kerr) was applied to etched dentin surface, and resin composite was built up in three 1mm increments. After 24 hour storage in distilled water, the teeth were perpendicularly sectioned to obtain beams (1 x 1 mm2). Microtensile bond strength was measured and the data were statistically analyzed using one-way ANOVA and Tukey’s post hoc test (p<0.05). Group 4 showed the highest microtensile bond strength (p<0.05), Group 3 showed no significant improvements when compared to Group 1. Group 2 showed lowest microtensile bond strength (p<0.05). When restoring a non-carious cervical lesion, it is essential to remove the biofilm present on the dentin surface. In addition, in the method of removing the biofilm, both the brush removal method and the bur removal method were effective.
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근단 치주염을 동반한 백악질 열리 증례에 대한 다학제적 접근: 증례보고
성건화(Kun-Hwa Sung),조혜진(Hye-Jin Cho),조형훈(Hyung-Hoon Jo),박태영(Tae-Young Park) 대한치과의사협회 2022 대한치과의사협회지 Vol.60 No.11
Objectives: Cemental tear is a specific type of root surface fracture that can lead to rapid periodontal attachment loss. Tooth associated with cemental tear show mobility of tooth, resorption of alveolar bone, and inflammation that persists even after root canal treatment. Cemental tears are difficult to diagnose when characteristic fractures are not observed on radiographs, and often misdiagnosis as periapical or periodontal lesions. refore, an accurate diagnosis is essential for successful treatment of cemental tears and a multidisciplinary approach that involves both endodontic periodontal treatment, and periodontal surgery is required. The aim of this case report is to present the treatment and outcome of cemental tear which was managed with two different surgical treatment regimes. In the first case, after conventional endodontic treatment, cemental fragment was removed through open flap surgery, and regeneration treatment was performed by guided tissue regeneration (GTR) and bone graft. In the second case, after conventional endodontic treatment, apicoectomy and removal of cemental fragments were performed through replantation of tooth, followed by guided tissue regeneration (GTR) and bone graft. In both cases, follow-up of more than 6 months was performed, symptoms subsided and recovery of periapical alveolar bone was observed on radiographs.
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카메라 화이트밸런스 설정과 외부 광원의 색온도에 따른 이미지 획득 결과에 대한 고찰
성건화(Kun-Hwa Sung),지명관(Myeongkwan Jih),조형훈(Hyoung-Hoon Jo),민정범(Jeong-Bum Min),황호길(Ho-Keel Hwang),박태영(Tae-Young Park) 대한치과의사협회 2021 대한치과의사협회지 Vol.59 No.2
Digital photography is a very useful recording and communication method for both dentists and dental technicians. Intraoral photography can be influenced by a variety of factors. Among them, the digital camera’s white balance setting and interference of external lighting can greatly affect the intraoral photography. The purpose of this study was to analyze the effect of color temperature of ambient light and white balance of digital camera on intraoral digital photography. The maxillary central incisor made of composite resin was used as an intraoral photographic model. In the first experiment, color measurement was performed by changing the ambient light color temperature to 3500°K, 4000°K, 4500°K, 5000°K, 5500°K, and 6000°K. The white balance of the camera was set to 3570°K, 4550°K, and5 500°K, respectively. CIE L*a*b* values of buccal surface region were recorded. ΔE values were obtained by comparing the CIEL *a*b* values obtained in each group. In the second experiment, CIE L*a*b* values were obtained by changing the white balance to 4000°K, 4550°K, 5000°K, and 5500°K in the intraoral photography model. At this time, the color temperature of the ambient light was fixed at 5500°K. ΔE values between each group were obtained in the same way. As a result of the experiment, digital photographs did not show visually perceptible ΔE values for the changing in ambient light color temperature. This was the same for all white balance groups. When the camera’s white balance setting was changed, the ΔE value was more than 3.7, which is a visually perceptible change. In conclusion, digital photographs were more affected by digital camera’s white balance setting than the color temperature of ambient light.
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증후군이 없는 40대 환자에 발생한 양측성 함치성낭: 증례보고 및 문헌고찰
서요섭 ( Yo Seob Seo ),성건화 ( Kun Hwa Sung ),김진수 ( Jin Soo Kim ) 조선대학교 구강생물학연구소 2012 Oral Biology Research (Oral Biol Res) Vol.36 No.1
Dentigerous cysts, the most commonly occurring developmental cysts of the jaw, develop in association with impacted teeth. However, in the absence of a syndrome, occurrence of bilateral dentigerous cystsis rare;approximately 23 cases have been described in the literature. Development of bilateral dentigerous cysts after the fi fth decade is extremely rare. We report on a rare case of bilateral non-syndromic dentigerous cysts associated with both mandibular third molars of a 49 year-old man.
DBpia
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