1.Measurement of the Exposed Eyeball Area and Vertical Dimension of Palpebral Fissure after Double Eyelidplasty.
Archives of Aesthetic Plastic Surgery 2017;23(1):24-29
BACKGROUND: Although the technique of double eyelidplasty is well recognized, there have been a few reports on the measurement of the eyelid after the operation. Herein, we measured the changes of the eyelids photogrammatically and compared them with others. METHODS: Database of patients who had undergone double eyelidplasty using a three-partial-incision technique, along with a follow-up of more than 6 months, were identified. The changes of eyelid were measured by exposed eyeball area (EEA) and vertical dimension of palpebral fissure (VDPF) using preoperative and postoperative photographs. RESULTS: Between January 2012 and December 2013, there were 28 patients who were followed-up for more than 6 months. All patients were female between the age of 16 and 37 years; the average follow-up period was 11.4 months. The mean preoperative value of EEA was 74.6±9.1% and that of VDPF was 7.4±1.0 mm. Conversely, the mean postoperative value of EEA was 83.9±6.3% and that of VDPF was 8.5±1.0 mm. CONCLUSIONS: The mean values of EEA and VDPF after double eyelidplasty had changed with statistical significance.
Blepharoplasty
;
Eyelids
;
Female
;
Follow-Up Studies
;
Humans
;
Vertical Dimension*
2.Effect of working time on the film thickness of dental resin cements.
Yu Seung YI ; Sung Hun KIM ; Jai Bong LEE ; Jung Suk HAN ; In Sung YEO ; Seung Ryong HA ; Hee Kyung KIM
The Journal of Korean Academy of Prosthodontics 2015;53(4):325-329
PURPOSE: The aim of this study was to compare the film thicknesses of several resin cements as a function of time after mixing and to examine the effect of working time on the film thicknesses. MATERIALS AND METHODS: The film thickness (microm) of 4 resin cements (n=10), 1 composite resin (Panavia F 2.0), 3 self-adhesive resin (Clearfil SA luting, Zirconite, RelyX U200) cements was measured at 20-second intervals after mixing of the cements up to 200 seconds under a load of 50 N. Linear regression was fitted to verify the effect of working time on the film thickness of each cement. Data were compared to the working time recommended by manufacturers using Wilcoxon test (alpha=.05). RESULTS: All of the materials showed a positive linear correlation between the film thickness and working time. There was no statistically significant difference between the working time based on our results and the values recommended by the manufacturers even though there was a discrepancy between those two values. CONCLUSION: The film thickness of resin cements could increase with the increase of working time. Working time to meet the ISO standard of 50-microm maximum film thickness could be different from the manufacturer's recommended value.
Linear Models
;
Resin Cements
;
Resins, Synthetic*
3.Early Complications from Absorbable Anchoring Suture Following Thread-Lift for Facial Rejuvenation.
Seung Hun YEO ; Young Bae LEE ; Dong Gil HAN
Archives of Aesthetic Plastic Surgery 2017;23(1):11-16
BACKGROUND: Thread lifting has been known as a minimally invasive procedure compared with the standard incisional surgery for facial rejuvenation. Although there have been several reports on acute or delayed complications after using nonabsorbable thread type, there have only been a few studies on such complications after using absorbable thread type. Hence, the aim of this study was to introduce various complications of thread lifting using the absorbable anchoring type for facial rejuvenation and to discuss about how to resolve it. METHODS: A retrospective review of 144 cosmetic patients, who underwent absorbable barbed thread lifting between July 2013 and December 2015, was performed. The procedure was done using the temporal anchoring technique. The thread used in this study are polydioxanone molding cog (PMC) and polydioxanone cutting cog (PCC), which are both the absorbable type. RESULTS: The results are as follows: Dimple was developed in 3 cases (2.1%); thread exposure was developed in 5 cases (3.5%); alopecia was developed in 3 cases (2.1%); undercorrection was developed in 3 cases (2.1%); asymmetry was developed in 1 case (0.7%); and parotid gland injury was developed in 1 case (0.7%). Out of the total 144 patients, sixteen (11.1%) patients developed at least 1 complication. There was no detectable inflammation or consistent skin excavation. CONCLUSIONS: Most complications of absorbable thread lifting are minor ones, and such complications resolve by retouching or widening the anchoring gap, but it is important to keep in mind the possibility of parotid gland injury.
Alopecia
;
Fungi
;
Humans
;
Inflammation
;
Lifting
;
Parotid Gland
;
Polydioxanone
;
Rejuvenation*
;
Retrospective Studies
;
Rhytidoplasty
;
Skin
;
Suture Anchors
;
Sutures*
4.A Case of Incomplete Femoral Nerve Neuropathy after Total Abdominal Hystrectomy.
Sae Min CHUNG ; Yun Jin MOON ; Seung Geun PARK ; Hye Young PARK ; Ji Yeon CHO ; Yeo Hong YUN ; Yong Hun CHEE
Korean Journal of Obstetrics and Gynecology 2003;46(7):1466-1468
Total abdominal hystrectomy is the most common surgery of Gynecology. It's complication are taken very important. Although neuropathy, especially femoral nerve injury, is rare, recently we have experienced a case of femoral neuropathy after total abdominal hystrectomy. We present this case with a brief review of literature.
Femoral Nerve*
;
Femoral Neuropathy
;
Gynecology
5.Effect of the amount of thickness reduction on color and translucency of dental monolithic zirconia ceramics.
Hee Kyung KIM ; Sung Hun KIM ; Jai Bong LEE ; Jung Suk HAN ; In Sung YEO ; Seung Ryong HA
The Journal of Advanced Prosthodontics 2016;8(1):37-42
PURPOSE: This study investigated the effect of amount of thickness reduction on color and translucency of dental monolithic zirconia ceramics. MATERIALS AND METHODS: One-hundred sixty-five monolithic zirconia specimens (16.3 mm x 16.3 mm x 2.0 mm) were divided into 5 groups (Group I to V) according to the number of A2-coloring liquid applications. Each group was then divided into 11 subgroups by reducing the thickness up to 1.0 mm in 0.1-mm increments (Subgroup 0 to 10, n=3). Colors and spectral distributions were measured according to CIELAB on a reflection spectrophotometer. All measurements were performed on five different areas of each specimen. Color difference (DeltaE*(ab)) and translucency parameter (TP) were calculated. Data were analyzed using one-way ANOVA and multiple comparison Scheffe test (alpha=.05). RESULTS: There were significant differences in CIE L* between Subgroup 0 and other subgroups in all groups. CIE a* increased (0.52
Ceramics*
;
Prosthesis Coloring
6.Effect of water storage on the fracture toughness of dental resin cement used for zirconia restoration.
Bon Wook GOO ; Sung Hun KIM ; Jai Bong LEE ; Jung Suk HAN ; In Sung YEO ; Seung Ryong HA ; Hee Kyung KIM
The Journal of Korean Academy of Prosthodontics 2014;52(4):312-316
PURPOSE: The aim of this study was to compare the fracture toughness of currently available resin cements for zirconia restorations and evaluate the effect of water storage on fracture toughness of those resin cements. MATERIALS AND METHODS: Single-edge notched specimens (3 mm x 6 mm x 25 mm) were prepared from three currently available dual cure resin cements for zirconia restorations (Panavia F 2.0, Clearfil SA luting and Zirconite). Each resin cement was divided into four groups: immersed in distilled water at 37degrees C for 1 (Control group), 30, 90, or 180 days (n=5). Specimens were loaded in three point bending at a cross-head speed of 0.1 mm/s. The maximum load at specimen failure was recorded and the fracture toughness (K(IC)) was calculated. Data were analyzed using one-way ANOVA and multiple comparison Scheffe test (alpha=.05). RESULTS: In control group, the mean KIC was 3.41 +/- 0.64 MN.m(-1.5) for Panavia F, 2.0, 3.07 +/- 0.41 MN.m(-1.5) for Zirconite, 2.58 +/- 0.30 MN.m(-1.5) for Clearfil SA luting respectively, but statistical analysis revealed no significant difference between them. Although a gradual decrease of K(IC) in Panavia F 2.0 and gradual increases of KIC in Clearfil SA luting and Zirconite were observed with storage time, there were no significant differences between immersion time for each cement. CONCLUSION: The resin cements for zirconia restorations exhibit much higher K(IC) values than conventional resin cements. The fracture toughness of resin cement for zirconia restoration would not be affected by water storage.
Immersion
;
Resin Cements
;
Resins, Synthetic*
;
Water*
7.Molds Isolated from Pet Dogs.
Kye Seung JANG ; Yeo Hong YUN ; Hun Dal YOO ; Seong Hwan KIM
Mycobiology 2007;35(2):100-102
Pet dogs have been considered to be involved in the contamination of indoor air by serving as a source of providing molds at houses. Currently, information on the molds originated from pet dogs is rarely available in Korea. The present study was carried out to obtain basic information on the fungi present on pet dogs. For this, fungal isolation was performed to the skin and hairs of 70 pet dogs at different houses and veterinary hospitals. A total of 44 fungal isolates were obtained from skin (27 isolates) and hairs (17 isolates) of the dogs investigated. Based on the observation of microstructures and colony morphology, and the ITS rDNA sequence analysis, the fungal isolates were identified at the level of genus. The identified isolates belong to the genera of Alternaria, Aspergillus, Beauveria, Chrysosporium, Cladosporium, Penicillium, Scopulariopsis, and Trichoderma. Among these genera, Aspergillus (25%), Cladosporium (23%) and Penicillium (20.5%) were 3 major genera. 63% of the 44 isolates showed color changes on dermatophyte test medium (DTM). When we tested the growth ability of 44 isolates at 37degrees C, 45% of the isolates were able to grow. These results show that pet dogs could carry fungi having a potentiality of affecting on human health.
Alternaria
;
Animals
;
Arthrodermataceae
;
Aspergillus
;
Beauveria
;
Chrysosporium
;
Cladosporium
;
DNA, Ribosomal
;
Dogs*
;
Fungi*
;
Hair
;
Hospitals, Animal
;
Humans
;
Korea
;
Penicillium
;
Scopulariopsis
;
Sequence Analysis
;
Skin
;
Trichoderma
8.An experimental study on the healing process of toothash, plaster of paris and autogenous bone composite grafting in dogs
Hwan Ho YEO ; Jae Hun JUNG ; Sang Ho LEE ; Heung Jung KIM ; Young Kyun KIM ; Seung Cheul LIM ; In Tak SUL
Journal of the Korean Association of Maxillofacial Plastic and Reconstructive Surgeons 2000;22(1):1-14
Adult
;
Animals
;
Bone Density
;
Calcium Sulfate
;
Depression
;
Dogs
;
Golgi Apparatus
;
Humans
;
Organelles
;
Osteoblasts
;
Osteogenesis
;
Secretory Vesicles
;
Transplants
;
Wounds and Injuries
9.Japanese Encephalitis in Korea, 2010: Case Reports and Epidemiology.
Min Ju YEO ; Kyung Ho CHOI ; Suk Hun KANG ; Sung Hun KIM ; Seo Young LEE ; Moo Hyeon SONG ; Seung Hwan LEE
Journal of the Korean Neurological Association 2011;29(4):335-338
Japanese encephalitis has been the leading cause of epidemic viral encephalitis in Korea. In 2010, 26 patients with Japanese encephalitis were documented in Korea. Patients older than 50 years accounted for 54% of this cohort, and none of the patients was younger than 10 years. The number of documented cases of Japanese encephalitis increased markedly in 2010 compared to the annual reported cases during the previous 10 years.
Asian Continental Ancestry Group
;
Cohort Studies
;
Encephalitis, Japanese
;
Encephalitis, Viral
;
Humans
;
Korea
10.The influence of various core designs on stress distribution in the veneered zirconia crown: a finite element analysis study.
Seung Ryong HA ; Sung Hun KIM ; Jung Suk HAN ; Seung Hyun YOO ; Se Chul JEONG ; Jai Bong LEE ; In Sung YEO
The Journal of Advanced Prosthodontics 2013;5(2):187-197
PURPOSE: The purpose of this study was to evaluate various core designs on stress distribution within zirconia crowns. MATERIALS AND METHODS: Three-dimensional finite element models, representing mandibular molars, comprising a prepared tooth, cement layer, zirconia core, and veneer porcelain were designed by computer software. The shoulder (1 mm in width) variations in core were incremental increases of 1 mm, 2 mm and 3 mm in proximal and lingual height, and buccal height respectively. To simulate masticatory force, loads of 280 N were applied from three directions (vertical, at a 45degrees angle, and horizontal). To simulate maximum bite force, a load of 700 N was applied vertically to the crowns. Maximum principal stress (MPS) was determined for each model, loading condition, and position. RESULTS: In the maximum bite force simulation test, the MPSs on all crowns observed around the shoulder region and loading points. The compressive stresses were located in the shoulder region of the veneer-zirconia interface and at the occlusal region. In the test simulating masticatory force, the MPS was concentrated around the loading points, and the compressive stresses were located at the 3 mm height lingual shoulder region, when the load was applied horizontally. MPS increased in the shoulder region as the shoulder height increased. CONCLUSION: This study suggested that reinforced shoulder play an essential role in the success of the zirconia restoration, and veneer fracture due to occlusal loading can be prevented by proper core design, such as shoulder.
Bite Force
;
Crowns
;
Dental Porcelain
;
Dental Prosthesis Design
;
Dental Stress Analysis
;
Finite Element Analysis
;
Molar
;
Shoulder
;
Software
;
Tooth
;
Zirconium