http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
신수일 대한예방치과학회 2020 International Journal of Clinical Preventive Denti Vol.16 No.3
Direct pulp capping (DPC) refers to the direct application of a medicament on the pulp, in the case of mechanically or traumatically pulp exposure. This technique is reported to be highly successful following the development of biocompatible medicaments in recent years and has contributed to the successful treatment for carious teeth with pulp exposure. Using mineral trioxide aggregate (MTA), DPC was performed on an immature permanent mandibular right molar tooth with extensive caries in a 9-year-old male patient. The patient did not complain of any postoperative pain. Furthermore, an increase in the length of the root and the thickness of the canal wall was observed. Based on these findings, the treatment was considered to be successful. Furthermore, this report discusses the guidelines and indications for the treatment of immature permanent carious teeth with pulp exposure via DPC using MTA.
신수일,신동훈 大韓齒科保存學會 2004 Restorative Dentistry & Endodontics Vol.29 No.2
The purposes of this study were to estimate the material properties of the recently developed domestic composite resins for core filling material (Chemical, Dual A, Dual B; Vericom, Korea) and to compare them with other marketed foreign products (CorePaste, Den-Mat, USA; Ti-Core, Essential Dental Systems, USA: Support, SCI-Pharm, USA). Six assessments were made; working time, setting time, depth of polymerization, flexural strength, bonding strength, and marginal leakage. All items were compared to ISO standards. All domestic products satisfied the minimum requirements from ISO standards (working time: above 90 seconds, setting time: within 5 minutes), and showed significantly higher flexural strength than Core Paste. Dual A and B could, especially, reduce the setting time to 60 seconds when cured with 600 mW/㎠ light intensity. All experimental materials showed 6 mm depth of polymerization. Bond strengths of Ti-Core and Dual B materials were significantly higher than the other materials. Furthermore, three domestic products and Ti-Core could reduce the microleakage effectively.
신수일,김승오 대한통합치과학회 2020 대한통합치과학회지 Vol.9 No.2
Background: The objective of the present study was to examine the status of patients who had received dental treatment under intravenous (IV) sedation for suppressing exaggerated gag reflex (EGR) at Dankook University Dental Hospital (DUDH) in Korea. And it was written to provide dentists information that dental treatment under IV sedation for relieve the EGR. Methods: Retrospective analysis was performed on 457 cases of patients who had received dental treatments under IV sedation between January 2012 and March 2018. 90 cases of patients received dental treatment under IV sedation for relieve the EGR. The analysis examined the patient’s sex, age, onset and recovery time for IV sedation, type of dental treatment performed and annual trends. Results: Patients with EGR have difficulty getting the dental treatment, IV sedation is often used to relieve EGR in some patients. The mean duration of IV sedation was 87.1 min, while the mean duration of treatment was 73.4 min. The onset and recovery time for IV sedation is in short, 10 min to 45 min, mean time is 13.7 min. Total number of patients were 90, the number of different types of dental treatment were 109. These included surgical treatment (n=28), periodontal treatment (n=15), prosthodontic treatment (n=30), restorative treatment (n=13), implant surgery (n=8), endodontic treatment (n=14), etc. (n=1). Conclusions: The use of IV sedation for dental treatment with EGR provide more comfortable dental service, fewer side effects because of the fast onset and recovery time and lesser risk than general anesthesia. Dentists can secure sufficient dental time through IV sedation and provide various type of dental treatments during that time. IV sedation will be able to satisfy the needs of patients with EGR to receive dental treatment more comfortably, and when sufficient information about IV sedation is provided, its use is expected to expand in the future.
근관내 잔존 Calcium Hydroxide제재가 치근단 미세누출에 미치는 영향
신수일,조용범 대한치과보존학회 2001 Restorative Dentistry & Endodontics Vol.26 No.1
The purpose of this in vitro study was to compare the apical leakage in extracted teeth filled with gutta-percha subsequent to dressing with one of three different calcium hydroxide preparations. Thirty six extracted teeth with single canal were sued in this study. After working length determination, canals were prepared with K flexo files to a #40 at the working length. Step-back flaring was produced by using #45, #50 K flexo files and #2, #3, #4 Gates Glidden burs. The teeth were randomly divided into 3 groups of 10 each: the remaining six teeth were used for negative and positive leakage control: Group 1, dressed with pure calcium hydroxide power (Sigma, USA) mixed with distilled water; Group 2, dressed with Metapaste (Metadent, Korea); Group 3, dressed with Vitapex (Neo Dental, Japan). Teeth were sealed with Caviton (GC, Japan) and incubated in 100% humidity, at 37℃ for 1 wk. All kinds of calcium hydroxide were removed from the canal with a MAF and 5% NaOCI. The canals were filled with AH-26 sealer and gutta-percha using lateral condensation technique, incubated in 100% humidity, at 37℃ for 2 days for the sealer to be set. The teeth were coated twice with nail varnish except for an area of approximately 2mm surrounding the apical foramen. All specimens were placed in 2% mthylene blue solution for 2 days. The root were sectioned longitudinally, the amount of apical leakage was measured to the most coronal part of the root canal to which the dye had penetrated. The independent measurements were made for each root using a stereomicroscope (x 40 magnification) and the average was recorded for statistical analysis. The results were as follows; 1.The mean of apical leakage in group of pure calcium hydroxide ranged 0.102±0.156mm, in Metapaste ranged 0.062±0.069mm, and in Vitapex ranged 0.067±0.072mm. 2.Group of pure calcium hydroxide exhibited more leakage than those of 2manufactured calcium hydroxide preparations, but it was not statistically significant. 3.Group of water-based Mtapaste showed lesser leakage than that of oil-based Vitapex, but it was not statistically significant.