STATEMENT OF PROBLEM: Ceramic and composite resin have been used to fulfill the demand for esthetic prosthesis. However, ceramic is easy to break and wears off the opposite natural teeth. Conventional composite resin also has low abrasive resistance and color stability. Ceramic Optimized Polymer (ceromer) was developed in mid-1990s to overcome the shortfalls of ceramic and composite resin. Ceromer has similar abrasiveness with the natural tooth and has relatively high strength. Color stability affects esthetics and long-term prognosis of the prosthesis. PURPOSE: The purpose of this study was to compare color stability of ceromers(2 types : Artglass., Targis.) with ceramics(Vintage.-polishing, Vintage.-glazing). MATERIAL AND METHOD: The color difference(E*) was measured by spectrophotometer with different immersion time. Twenty disks, 3mm in thickness and 10mm in diameter, were fabricated for each specimen in shade A2(Vita Lumin shade guide). Specimens(5 samples in each group) were immersed in the food colorants(Red no.3, Yellow no.4, Blue no.1, Distilled water) for 24 hours, 48 hours and 72 hours respectively. L*, a* and b* value were measured with spectrophotometer (CM 503i : Minolta Co., Japan) and mean E* value was calculated for statistical analysis. RESULTS: The results of this study were obtained as follows. 1. The E* values of all test samples increased with the time of immersion. 2. The E* values of all materials increased in order of Distilled Water, Yellow no.4, Blue no.1 and Red no.3. There was significant difference between Red no.3 and the other food colorants(p<0.05). 3. The E* values increased in order of Vintage-glazing, Vintage-polishing, Artglass and Targis. There was significant difference between Vintage.-glazing and the other materials (p<0.05). CONCLUSION: By means of the above results, immersion time was found to be a critical factor for color stability of ceromer. For the long-term color stability of prosthesis it is recommended patients having ceromer prosthesis(Artglass., Targis.) to reduce the habitual intake of Red no.3 colorants con taining foods.
Ceramics ; Esthetics ; Food Coloring Agents* ; Humans ; Immersion ; Polymers ; Prognosis ; Prostheses and Implants ; Tooth ; Water

Diaper dermatitis is an infant dermatosis associated with the wearing of diapers, Despite of its high frequency in clinical pediatrics the clinical characteristics are not well described in the korean literatvre. We investigated the clinical and mycological characteritics of diaper dermatitis in 50 serial patients. Clinically diaper dermatitis was classified. into five categories,irritant contact derniatitis(ID), candidiasis(CD). combined rash of ID and CD(CR.), intertrigo, and miliari. Of 50 patients with diaper dermatitis, 18 had ID; 16, CI3; 10, CR; 5, intertrigo, and 1, miliaria, The mean age of patients with ID (11.8 months) was higher than that of patients with CD (4.0 months). Candida albicans(C. albicans) w is isolated from 25 patients with diaper dermatitis. The rate of positive cultures by clinical diagnosis was 130% in CD, 11.1% in ID, 60, 0% in CR, and 20.0% in intertrigo. C. albicons was isolated from 23 patients(82.1%) of patients with clinically suspected Ci") and 2 of 22 patients without the characteristic erythematous papulesThe presence of eryhematous papules was the most characteristic clinical feature of infection, Other candida species isolated from cut,aneous lesions were C. tropicalsis, C.'. parapsiolosis, and C. stellatoidea.
Candida ; Candidiasis ; Dermatitis* ; Diagnosis ; Exanthema ; Humans ; Infant ; Intertrigo ; Miliaria ; Pediatrics ; Skin Diseases

No abstract available.

In orthognathic surgery to obtain proper functional and esthetic form after skeletal discrepancy treatment, precise diagnosis and treatment plan are essential. Especially in two jaw surgeries that have serious upper and lower jaw problems, maxilla and mandible are arranged in three dimensions. Based on the maxillary rearrangement, mandibular sagittal and transverse position are determined, and thus new occlusal plane is established. The object of this study is to evaluate the stability of the individual ideal occlusal plane based on the architectural and structural craniofacial analysis of Delaires. The subjects of this study were 48 patients who underwent two jaw surgeries, and they were equally divided into two groups. A and B. A group was operated with ideal occlusal plane and B group was not. Two groups were compared at the preoperative, immediate postoperative (average 4.3days). and long-term postoperative (average 1.3years) lateral cephalometric radiographs. The following results were obtained : 1. ANS was lower than that of PNS for both A and B after the surgery. That is, maxilla and mandible are rotated in posterior and superior direction. 2. Significances were found between T2 and T3 for both a and B are HRP-Me at vertical measurements, articular angle(p<0.01), gonial angle(p< 0.01), and Mn. plane angle(p<0.05) at angular measurement. Mn. plane angle is increased at HRP-Me is decreased for both A and B 3. There is no significance in skeletal stability after the surgery between group A and B. 4. Horizontal movements of B and Pog by surgery have statistically significant inverse correlations with horizontal relapse of B and Pog, and vertical relapse of PNS, as well as Mn. plane angle, and gonial angle after the surgery.
Dental Occlusion* ; Diagnosis ; Humans ; Jaw ; Mandible ; Maxilla ; Orthognathic Surgery* ; Recurrence

BACKGROUND: Because systolic and diastolic dysfunction frequently coexist in acute myocardial infarction(AMI), we hypothesize that a combined measure of ventricular performance using Doppler echocardiography may be more sensitive and time-saving diagnostic tool for the evaluation of patients presenting with cardiogenic chest pain. METHOD AND RESULTS: Seventy-one patients with AMI (47 male, 59+/-11 years) and 45 patients with normal coronary artery (29 male, 52+/-11 years) were included in the study for measurement of cardiac performance index and established parameters of ventricular function using conventional echo-Doppler methods. a new derived index of cardiac performance: (ICT+IRT)/ET, was obtained by subtracting ejection time(ET) from the interval between cessation and onset of the mitral inflow velocity to give the sum of isovolumic contraction time(ICT) and isovolumic relaxation time(IRT). The mean value of the index was significantly different between normal and AMI(p<0.01). The degree of inter-group overlap was smaller for the index compared to other parameters. within functional groups, the value of the index did not appear to be related to heart rate, mean arterial pressure and the degree of mitral regurgitation. CONCLUSION: cardiac performance index is a conceptually new, simple and reproducible Doppler index of combined systolic and diastolic myocardial performance, and it is useful as screening test for patients with cardiac dysfunction due to AMI.
Arterial Pressure ; Chest Pain ; Coronary Vessels ; Echocardiography, Doppler ; Heart Rate ; Humans ; Male ; Mass Screening* ; Mitral Valve Insufficiency ; Myocardial Infarction* ; Relaxation ; Ventricular Function

Background: The purpose of this study was to investigate the effects of commercially available calamansi soju and other alcoholic beverages on the microhardness and erosion of resin restorations. Methods: In this study, we evaluated the effects of Calamansi soju, Chamisul fresh, Cass fresh, and Gancia Moscato D’asti on resin restorations. Jeju Samdasoo and Coca-Cola were used as negative and positive controls, respectively. Specimens to be immersed in the beverages were manufactured using composite resin according to the product instructions. In each group, the surface microhardness was measured using a surface microhardness instrument before and after immersion for 5, 15, 30, and 60 minutes. The pattern of change in the surface of the composite resin was observed under a scanning electron microscope (SEM). Paired t-tests, one-way ANOVA, and repeated measures ANOVA were performed to compare the surface microhardness of the specimens, and the Tukey test was used as a post hoc test. Results: The pH of all beverages except Jeju Samdasoo was ＜5.5, which is the critical pH that can induce erosion. The difference in surface microhardness of the composite resin before and after immersion for 60 minutes was significant in all groups. In particular, the largest change in surface microhardness was observed in the calamansi soju group. In the SEM analysis, loss of composite resin was observed in all groups except the Jeju Samdasoo group, and rough surfaces with pores of various sizes were observed. Conclusion In this study, all beverages except Jeju Samdasoo decreased the microhardness of the composite resin surface, and it was confirmed that calamansi soju had the greatest change.

BACKGROUND/AIMS: The incidence of adult small bowel intussusception detected at CT has increased with advanced imaging techniques and universal utilization of CT scan. We aimed to identify factors that could predict the necessity of surgical intervention in adult patients with small bowel intussusception detected at CT during the past decade. METHODS: There were 39 cases of adult small-bowel intussusception detected at CT from January 2004 to June 2014. The data on clinical factors, radiological factors and outcomes were collected by retrospectively reviewing all available medical records. Patients were classified as surgical group and conservative group according to the outcome. Association between predictive factors and outcome was assessed by Fisher's exact test and logistic regression models. RESULTS: Among a total of 39 patients, there were 32 patients (82%) in the conservative group and 7 patients (18%) in the surgical group. Spontaneous reduction was confirmed at short-term follow-up studies (abdominal ultrasonography [n=14], single contrast small bowel series [n=14], CT [n=4]) in the conservative group. No recurrence occurred during the median follow-up period of 14.1 months (range, 0-67.5 months). Patients in the surgical group had significantly higher white blood cell (WBC) counts (OR 1.001, p=0.048), more frequent obstruction (n=4 vs. n=4, p=0.022) or leading point (n=5 vs. n=0, p<0.001) and longer intussuception length (OR 1.929, p=0.032). CONCLUSIONS: Factors associated with the necessity to resort to surgical intervention in adults with small bowel intussusceptions were higher WBC counts, presence of obstruction or leading point, and longer intussuception length. Conservative management can be considered with short-term follow-up for those without these predictive factors.
Abdomen/diagnostic imaging ; Adult ; Aged ; Aged, 80 and over ; Diagnosis, Differential ; Female ; Follow-Up Studies ; Humans ; Intestine, Small/*diagnostic imaging ; Intussusception/*diagnostic imaging/surgery/therapy ; Leukocyte Count ; Male ; Middle Aged ; Odds Ratio ; Radiography, Abdominal ; Retrospective Studies ; Tomography, X-Ray Computed ; Ultrasonography

BACKGROUND: Osteoclasts are the only cell type capable of breaking down bone matrix, and its excessive activation is responsible for the development of bone-destructive diseases. Euphorbia lathyris L. (ELL) is an herbal plant that belongs to the Euphorbiaceae family. This study investigated the effects of the methanol extract of the aerial part of ELL on receptor activator of nuclear factor-kappa B ligand (RANKL)-induced osteoclast formation and signaling pathways. METHODS: Osteoclasts were formed by co-culturing mouse bone marrow with osteoblasts or by culturing mouse bone marrow-derived macrophages (BMMs) with macrophage colony-stimulating factor (M-CSF) and RANKL. Bone resorption assays were performed using dentine slices. The expression level of mRNA was analyzed by real-time polymerase chain reaction (PCR) or reverse transcription (RT)-PCR. Western blotting assays were performed to detect the expression or activation level of proteins. RESULTS: ELL inhibited RANKL-induced osteoclast formation without cytotoxicity. Furthermore, the RANKL-stimulated bone resorption was diminished by ELL. Mechanistically, ELL blocked the RANKL-triggered p38 mitogen-activated protein kinase (MAPK) phosphorylation, which resulted in the suppression of the expression of c-Fos and nuclear factor of activated T cells (NFATc1). In osteoblasts, ELL had little effect on the mRNA expression of RANKL and osteoprotegerin (OPG). CONCLUSIONS: The present data suggest that ELL has an inhibitory effect on osteoclast differentiation and function via downregulation of the p38/c-Fos/NFATc1 signaling pathways. Thus, ELL could be useful for the treatment of bone diseases associated with excessive bone resorption.
Animals ; Blotting, Western ; Bone Diseases ; Bone Marrow ; Bone Matrix ; Bone Resorption ; Dentin ; Down-Regulation ; Euphorbia* ; Euphorbiaceae ; Humans ; Macrophage Colony-Stimulating Factor ; Macrophages ; Methanol ; Mice ; Osteoblasts ; Osteoclasts* ; Osteoprotegerin ; p38 Mitogen-Activated Protein Kinases ; Phosphorylation ; Plants ; Protein Kinases ; RANK Ligand ; Real-Time Polymerase Chain Reaction ; Reverse Transcription ; RNA, Messenger ; T-Lymphocytes

As the use computed tomographic (CT) scanning spread, the diagnosis of blowout fractures of the medial orbital wall increased. Now, the diagnosis of blowout fracture in the medial wall are not uncommon. Conventionally, the surgery of blowout fractures in medial orbital wall was performed by the various approach with external incision. The conventional method had seveal possible disadvantages, including an external scar, incomplete reduction, increased mobidity rate and general anesthesia. Recently, endoscopic reconstruction of the medial orbital wall has provided good functional and cosmetic results. We performed endoscopic transnasal reduction surgery without external incision in 12 cases of medial blowout fracture under local anesthesia. The fractured bony fragments were removed after the intranasal ethmoidectomy and the entrapped medial rectus was released. And then a sheet of silicone late or uncinate process were placed on the fracture site. For the maintain of the position of fractured wall, Merocel packing or urinary ballon catheter were used in orbital fracture site for 1-3 weeks. There were no specific complications related to this procedure. Result of the surgery in all cases were satisfactory. In this article, we discussed the surgical procedure, the benifit of the transnasal endoscopic approach, the indications for surgery, and possible comlications.
Anesthesia, General ; Anesthesia, Local ; Catheters ; Cicatrix ; Diagnosis ; Orbit* ; Orbital Fractures ; Silicones

No abstract available.
Chorion* ; Chorionic Villi Sampling* ; Chorionic Villi* ; Female ; Pregnancy