Is HE4 a new biomarker of ovarian cancer in Korean? (초)

정신혜 ( Shin Hye Chung ),( Soo Yoon Lee ),( Nam Hee Kim ),( Woong Ju ),( Seung Cheol Kim ) 대한산부인과학회 2010 대한산부인과학회 학술대회 Vol.96 No.-

임플란트 수술을 위한 미다졸람 정주와 아산화질소 흡입 병용 진정법의 효과와 안전성에 대한 전향적 무작위 대조군 연구

전승환,정신혜,김광수,전상호,황경균,박창주,Jeon, Seung-Hwan,Chung, Shin-Hye,Kim, Kwang-Soo,Jun, Sang-Ho,Hwang, Kyung-Gyun,Park, Chang-Joo 대한치과마취과학회 2012 Journal of Dental Anesthesia and Pain Medicine Vol.12 No.2

Background: The purpose of this study is to investigate the efficacy and safety of the sedation technique for implant surgery by combining the use of inhalation of nitrous oxide/oxygen with intravenous midazolam. Methods: Patients requiring surgery for the placement of dental implants were randomly allocated to two groups receiving intravenous midazolam or a combined technique using nitrous oxide/oxide and intravenous midazolam. Safety parameters, cooperation scores, anxiety scales, total amount of midazolam administered and recovery time were recorded and compared. Results: There were a statistically significant reduction in the amount of midazolam required to achieve optimal sedation (P<0.01), an overall significant reduction in recovery time (P<0.01), a significant reduction in anxiety scales (P<0.05), and a significant improvement in cooperation (P<0.05) and peripheral oxygen saturation (P<0.05) when a combined technique of inhalational $N_2O/O_2$ and midazolam was used. Conclusions: For implant surgery, this combining sedation technique could be safe and reliable, demonstrating reduction of total dose of midazolam and level of patient's anxiety and improvement in patient's recovery and cooperation.

준보석 가루를 이용한 수지 상감을 위한 접착제로써 UV 레진 활용 방안 연구

조민희(Jo, Mini Angela),정신혜(Chung, Shin Hye) 한국조형디자인학회 2021 조형디자인연구 Vol.24 No.4

상감기법은 분야마다 그 종류와 재료가 다양하다. 금속공예에는 기법에 따라 많은 종류의 상감이 존재하며, 그 중에서 금속의 표면을 깎아내어 음각을 낸 후, 접착제를 사용하여 준보석 가루를 메꾸는 장식기법을 준보석가루상감이라고 한다. 준보석가루상감을 위한 접착제로 시아노아크릴레이트(CA: Cyanoacrylate)성분이 들어간 CA순간접착제를 사용하는데, CA순간접착제는 경화시간이 짧은 성질을 가지고 있기 때문에 작업시간에 제한이 있다. UV(Ultraviolet)레진은 자외선에 노출이 되었을 때 경화가 시작하기 때문에, 작업시간을 조절할 수 있다는 장점을 가지고 있었다. 준보석가루상감의 접착제로서 가장 중요한 조건은 접착력이기 때문에, 시중에 판매되고 있는 세 가지의 UV레진재료를 선정하여 접착력 실험을 실행했다. 접착력의 실험방법으로는 금속의 표면처리와 준보석의 입자크기에 변화를 주었다. 실험을 통하여 새로운 접착방식의 접착제로 크리진 고점도 레진을 제안하며, 볼버 표면처리와 입자크기는 80 메시를 추천한다. 이 새로운 방식을 준보석가루상감에 도입하였고, 실제 실기작업에 응용하였다. Crushed Stone Inlay is a metalsmithing technique in which semi-precious stones are adhered in empty cavities on metal surfaces with an adhesive. The most common adhesive used in this technique is cyanoacrylate(CA) based super glues. CA super glues are quick bonding adhesives, but due to its short working time it is not an effective adhesive to use in crushed stone inlay work. To suggest an adhesive with prolonged working time, this study aimed to evaluate Ultraviolet(UV) curing resin materials as adhesives to achieve longer working time and cure on demand. The most important feature of the UV resin as an adhesive in crushed stone inlay is adhesion properties. The performance of three different UV resins, Mostive Base Gel, Crysin UV heavy resin and M. Brid M.glue were evaluated under various conditions; the texture of the metal surface, the size of the lapis lazuli pieces. As a result, this study recommends a new method of adhering crushed stones for inlay work using Crysin UV heavy resin with lapis lazuli sifted in 80 mesh in conjunction with metal surface textured by a ball bur. This method is then practiced in making decorative surfaces on metalworks.

The effect of titanium nitride coating on the fatigue fracture resistance of rotary nickel titanium instruments

In-Ja Hwang(황인자),Yeon-Jee Yoo(유연지),Jin-Soo Ahn(안진수),Shin-Hye Chung(정신혜),Kee-Yeon Kum(금기연),Yoon Lee(이윤),Deog-Gyu Seo(서덕규) 대한치과재료학회 2014 대한치과재료학회지 Vol.41 No.1

한국의 치의학교육 학제에 관한 연구 II: 통합 학제의 필요성

길윤민 ( Yoon Min Gil ),이지현 ( Jihyun Lee ),권호범 ( Ho-beom Kwon ),김선영 ( Sun-young Kim ),김진영 ( Ryan Jin Young Kim ),박신영 ( Shin-young Park ),송영하 ( Youngha Song ),정신혜 ( Shin Hye Chung ),지영아 ( Young-a Ji ) 대한예방치과·구강보건학회 2021 大韓口腔保健學會誌 Vol.45 No.3

Objectives: With the rapid changes in society, there are more arguments for redefining dental education system. This study aimed to review and analyze the problems in the current dental education system in Korea and then propose an integrated education system based on those findings. Methods: A narrative review of the problems confronting the dental education system in Korea was carried out. Accordingly, full-text screening and specialists’ discussions were extracted from the review. The purpose of the review was to summarize the strengths and weaknesses of Korean dental education systems to offer perspectives on an integrated education system in accordance with the specialists’ opinions. Results: The results revealed that the problems of the current dental education system were identified in clinical education, basic science, and humanities and social sciences. Dental schools should provide clinical education so that dental students can be exposed to the clinical environment at an early stage and perform patient-based clinical practice. It is also imperative to encourage participation in research programs to train dental scientists, as well as to reflect on courses that can adapt to changes brought about by new technologies. It is recommended that education opportunities for integrated humanities and social sciences be provided. Conclusions: It will be critical in the future for dental schools to embrace a flexible education system from various perspectives. It is vital that dental schools play a role in developing students’ critical thinking, problem-solving, and decision-making skills. Finally, as part of an integrated education system, an improvement program should be devised.

Light emitting diode를 이용한 광중합 시 금합금과 교정용 금속 브라켓의 전단접착강도

정민호,정신혜,손원준 대한치과교정학회 2010 대한치과교정학회지 Vol.40 No.1

성인 교정환자의 수요가 증가하면서 보철물 표면에 교정장치를 부착해야 하는 빈도가 늘어나고 있다. 본 연구는 금속표면에 교정장치를 직접 접착하고자 할 때 사용하는 metal primer와 silicoating으로 각각 금합금의 표면을 처리한 후 light emitting diode (LED) 광중합기를 사용하여 광중합을 시행하여 접착력을 평가해 보고자 하였다. Type III gold alloy 표면에 aluminum oxide를 이용한 sandblasting 후 4-META 계열의 metal primer로 처리한 시편과 silica를 이용한 sandblasting 후 silane으로 처리한 시편에 광중합형 접착레진인 Transbond XT를 이용하여 금속 브라켓을 접착하고 접착 후 1시간, 6시간, 24시간 후 전단접착강도의 변화를 비교, 관찰하였다. 측정된 값을 이원분산분석(two-way analysis of variance)을 이용하여 비교하고 두 가지 표면처리 방법 간에 접착강도에 차이가 있는지도 살펴보았다. 연구결과, metal primer에 비하여 silicoating을 시행한 시편에서 높은 전단접착강도가 관찰되었으며, 시간이 경과할수록 접착강도가 증가하는 경향을 보였다. Adhesive remnant index (ARI)에서는 군 간 유의한 차이를 보이지 않았다. LED를 이용하여 광중합을 시행하는 경우 법랑질에 비하여 긴 시간의 광중합을 실시하고 metal primer보다는 silicoating 방법을 사용하는 것이 금합금표면에 교정장치를 부착할 때 더 높은 접착강도를 얻을 수 있을 것이다. Objective: The need to bond orthodontic brackets onto various alloys has increased because of the increasing demand for adult orthodontic treatment. This study tried to evaluate the shear bond strength between gold alloy and metal bracket using light emitting diode (LED) light curing after metal primer and silicoating surface conditioning. Methods: Half of the type III gold alloy plates were treated with sandblasting with aluminum oxide and metal primer containing 4-META, the other half were treated with silica and silane. Metal brackets were bonded with Transbond XT light curing adhesive on these plates and shear bond strength were evaluated 1 hour, 6 hours, and 24 hours later. The differences of shear bond strength between groups were evaluated with two-way ANOVA. Results: The results showed higher bond strength in the silicoating group and a tendency of bond strength increase over time. Conclusions: When using LED curing lights for metal bracket bonding to alloy surfaces, long curing time and silicoating can produce a reliable bonding strength.

8.3% Carbamide Peroxide 함유 펜 형 자가미백제인 BIancTis Forte의 색조개선 및 안전성에 관한 임상연구

이진경,민선홍,홍성태,오소람,정신혜,황영혜,유성엽,배광식,백승호,이우철,손원준,금기연 대한치과보존학회 2009 Restorative Dentistry & Endodontics Vol.34 No.2

This clinical study evaluated the whitening effect and safety of polymer based-pen type BlancTis Forte(NIBEC) containing 8.3% carbamide peroxide. Twenty volunteers used the BlancTis Forte whitening agent for 2 hours twice a day for 4 weeks As a control. Whitening Effect Pen (LG) containing 3% hydrogen peroxide was used by 20 volunteers using the same protocol. The change in shade (ΔE^(*) color difference) was measured using Shadepilot™ (DeguDent) before, during and after bleaching (2 weeks, 4 weeks and postbleaching 4 weeks). A clinical examination for any side effects (tooth hypersensitivity or soft tissue complications) was also performed at each check-up. The following results were obtained. 1 Both the experimental and control groups displayed a noticeable change in shade (ΔE) of over 2 No significant differences were found between the two group (p>0.05) implying that the two agents have a similar whitening effect. 2 The whitening effect was mainly due to changes in a and b values rather than in L value (brightness). The experimental group showed a significantly higher change in b value thus yellow shade than the control(p < 0.05) 3 None of the participants complained of tooth hypersensitivity or soft tissue complications confirming the safety of both whitening agents 8.3%의 carbamide peroxide를 함유한 펜형 코팅용 미백제인 BlancTis Forte (NIBEC, Seosul & JinCheon)를 실험군으로, 3% hydrogen peroxide를 함유한글 Whitening Effect Pen (LG. Seoul) 제재를 대조군으로 각각 피험자 20명에게 2시간씩 1일 2회 제조사의 지시대로 치아표면에 4주간 적용하도록 지시하고 색조개선 효능과 안전성을 평가하였다. 미백 효과는 미백 전 및 미백 2주, 4주 및 미백 종료 4주 후에 Shadopilot™을 이용하여 색 변화를 측정하였고, 매 내원시기마다 모든 환자는 치수생활력 검사와 치주 및 치태 검사를 통해 부작용 여부 (치아과민증 및 구감 내 연조직의 부작용)를 기록한 후 다음과 같은 결과를 얻었다. 1.실험군 및 대조군의 색 변화량 (ΔE)은 2이상으로 인지할 수 있는 색 변화를 보였으며, 두 제품 간에는 통계적으로 유의한 차이를 보이지 않아 (p > 0.05) 유사한 미백효능을 나타냄을 알 수 있었다. 2,미백효과는 명도의 개선보다는 주로 a. b값의 변화에 의한 것으로 특히 실험군에서 b값의 변화, 즉 황색조의 개선효과가 대조군에 비해 유의성 있게 높은 것으로 나타났다 (p <0.05). 3.치아나 치은의 과민증이나 이상증상을 호소하는 피험자는 없어 두 제품 모두 안전성을 확인할 수 있었다.