The purpose of this study was to evaluate the association between oral health status and oral health-related quality of life (OHRQoL) by using the Oral Health Impact Profile-14 (OHIP-14) among adolescents in a metropolis of Korea. A total of 119 students in 1st grade in middle school and 1st grade in high school participated in this cross-sectional study. Oral examination was conducted by two trained dentists to collect in for mation about Decayed, Missing, and Filled Teeth (DMFT) and Community Periodontal Index (CPI). OHRQoL was evaluated by short-form of OHIP-14. Wilcoxon correlation, Kruskal-Wallis test and multiple regression analyses were performed to assess the association between oral health status and OHRQoL. All data was analyzed by SPSS 22.0 and the significance level was set at 0.05. The average of OHIP-14 score in adolescents having no dental caries ($17.88{\pm}5.13$) was higher than those having more than one DMFT index ($19.75{\pm}7.16$). The average of OHIP-14 score in adolescents having bleeding observed ($20.21{\pm}8.01$) was higher than those having more than calculus detected ($18.66{\pm}5.65$). The level of OHRQoL was higher in the participants perceiving better oral health condition compared to those perceiving poorer condition (p<0.05). The result of this study could provide the information that OHRQoL from adolescents positively associated with self-assessed oral health status than oral health with DMFT and CPI. Further studies are needed to well-designed follow-up studies.
Journal of the Korean Society of Food Science and Nutrition
/
v.23
no.3
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pp.502-508
/
1994
A total of 24 specimens of the pufferfish, Fugu xanthopterus, purchased at a fixhmarket in Pusan, korea were examined for toxicity using the assay method of tetrodotoxin (TTX). Also, the toxins isolated from the puffer liver were partially purified and analyzed for their chemical composition by instrumental behaviors. On the whole, when the level of toxicity in each organ was analyzed compared to that of liver, they were 100 % of the lover, 92 % for the intestine, 75% for the skin, 17% for the muscle, 785 for the testis, 87% for the ovary, and 71% for bile. The highest and average scores of toxicity for the liver were 917 and $231{\pm}51MU/g$ liver, respectively. The toxins of the puffer gave four peaks in HPLC whose retention times (10, 20, 22 and 25 min) were close to those of TDA, TTX, 4-epi-TTX, and and -TTX, respectively.
This experiment was carried out to investigate the effects of hormone addition(FSH, HCG, estrogen and progesterone) and composition (BSA and FCS) of mKRB on the in vitro maturation and fertilizability of follicular oocytes of the Korean native cattle. The ovaries were removed at a slaughterhouse, returned to laboratory in a thermostat (30-35$^{\circ}C$) within 4 hr, and collected by aspirating normal follicles which had diameters of 1 to 6 mm. The oocytes with cumulus cells were cultured for 8, 16, 24 and 30 hr in a modified KRB solution containing BSA or FCS and hormones. The in vitro matured oocytes in mKRB containing FCS, FSH and steroids were transferred in the rabbit uterus for examination of their in vivo fertilizability with bovine sperm preincubated 4 to 6 hr in the rabbit uterus. 1. The mean number of oocytes collected per cattle was 6.5 from 1-3mm follicles, 1.3 from 4-6mm follicles, and total was 7.7. 2. The meiotic division at 16hr-cuture in the oocytes from 1-3mm follicles was slightly stimulated by the addition of FSH in mKRB + BSA solution compared with the control. At 30hr-culture, their maturation rates(%Met II) were also increased by FSH of 1 $\mu\textrm{g}$/ml(38.4%) and 5$\mu\textrm{g}$/ml(35.7%) as compared with the control (21.4%). The maturation rate at 30hr-culture in the oocytes from 4-6mm follicles was 53.8% and 57.1% by the FSH addition of 1$\mu\textrm{g}$/ml and 5$\mu\textrm{g}$/ml, respectively. These rates were similar with the control(57.1%), but higher than those of oocytes from 1-3mm follicles. 3. The meiotic division at 16hr-culture in the oocytes from 1-3mm follicles was stimulated by the HCG addition of 1IU/ml and 5IU/ml. However, the maturation rate at 30hr-culture was greatly decreased by the HCG addtion (26.6% and 13.3%) compared with the control(53.3%) and these rates (30.8%) in the oocytes from 4-6mm follicles were also lower than that fo the control(58.3%). 4. Low maturation rate (37.5%) of the oocytes cultured in mKRB containing BSA and 5IU/ml HCG was increased (55.0%) when 15% FCS with HCG was added to mKRB instead of BSA. 5. When 16hr-cultured oocytes in mKRB containing BSA and gonadotropins (5$\mu\textrm{g}$/ml FSH and 5IU/ml HCG) were transferred in the medium without gonadotropins and recultured for 16hr, the maturation rate of HCG-treated oocytes was greatly improved. 6. The maturation rates of oocytes were greatly affected by steroids. The combined addition of FCS+FSH+estrogen or +progesterone to mKRB increased the maturation rate compared with the combination of BSA+FSH or FCS+FSH in mKRB. 7. The fertilization rate, presence of pronuclei, was increased by the combination of FCS+FSH+p in mKRB as compared with that (5.6%) of BSA+FSH and the rates of FCS+FSH+steroids ranged from 12.5 to 17.6%.
Objectives : Korean traditional acupuncture Theory, Sa-am's 5 phases acupuncture method was originated in 1644-1742, in the middle of the Cho Sun dynasty. This study was to verify the effect of Sa-am Acupuncture Treatment on dysmenorrhea of Women. Methods : The subjects were 49 volunteers who were suffering for dysmenorrhea, employed using Measure of Menstrual Pain (MMP) questionnaire. Subjects were divided into two groups including Sa-am acupuncture treatment group(n=23) and minimal acupuncture treatment group(n=26). They had agreed to take part in tIris experiment, with didn't take any anodyne drugs. In the acupuncture group, subjects were stimulated at $GB_{41}$, $SI_3$, $GL_{66}$, $SI_2$(Small intestine jung-guk) and $SP_6$. In the control group, subjects were needled at $L_{10}$, $S_{40}$, $P_5$, $G_{40}$ points have any effect on dysmenorrhea. A total of 5 acupuncture sessions were performed for each patient depending on the individual menstruation cycle. The MMP score by using 7 questions and the Menstrual Symptom Severity List(MSSL-D) were measured before and after menstruation cycle. Collected data were analyzed as frequency, percentage, paired t-test, independent t-test using SPSS 10.0 WIN Program. Results : Acupuncture treatment produced a significant improvement on dysmenorrhea in two groups, but a statistically significant difference was not shown in the acupuncture group compare to control group. Conclusions : Based on the above results, it was verified that Acupuncture Treatment was effective in decreasing the symptom of Dysmenorrhea.
Background: The association of biomaterial combined with repair factor-like platelet-rich plasma (PRP) has prospective values. Bovine-derived xenograft has been identified as an osteoconductive and biocompatible grafting material that provides osseointegration ability. PRP has become a valuable adjunctive agent to promote healing in a lot of dental and oral surgery procedures. However, there are controversies with respect to the regenerative capacity of PRP and the real benefits of its use in bone grafts. The purpose of this study was to assess the influence of PRP combined with xenograft for the repair of peri-implant bone defects. Methods: Twelve rabbits were used in this study, and the experimental surgery with implant installation was performed simultaneously. Autologous PRP was prepared before the surgical procedure. An intrabony defect (7.0 mm in diameter and 3.0 mm deep) was created in the tibia of each rabbit; then, 24 titanium dental implants (3.0 mm in diameter and 8.5 mm long) were inserted into these osteotomy sites. Thus, a standardized gap (4.0 mm) was established between the surrounding bony walls and the implant surface. The gaps were treated with either xenograft alone (control group) or xenograft combined with PRP (experimental group). After healing for 1, 2, 3, 4, 5, and 6 weeks, the rabbits were sacrificed with an overdose of KCl solution. Two rabbits were killed at each time, and the samples including dental implants and surrounding bone were collected and processed for histological analysis. Results: More newly formed bone and a better bone healing process were observed in control group. The histomorphometric analysis revealed that the mean percentage of bone-to-implant contact in the control group was significantly higher than that of the experimental group (25.23 vs. 8.16 %; P < 0.05, independent-simple t test, analysis of variance [ANOVA]). Conclusions: The results indicate that in the addition of PRP to bovine-derived xenograft in the repair of bone defects around the implant, PRP may delay peri-implant bone healing.
Kim, Sun-Jong;Shin, Sang-Wan;Han, Jung-Suk;Suh, Kyu-Won
The Journal of Korean Academy of Prosthodontics
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v.38
no.5
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pp.618-630
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2000
As Fiber-reinforced composite restorations cannot be made without leaving a marginal gap, luting cements play a pivotal role in sealing the margins as a prevention against margnal leakage. A recently introduced adhesive resin cement system is claimed to adhere chemically, as well as mechanically, to tooth substances, dental alloys and porcelain. But when considering the clinical variation conventional cementation using Zinc Phosphate and Glass-Ionomer can be requested. A vitro study was undertaken to compare microleakage and marginal fitness of Fiber-reinforced composite crowns(Targis/Vectris) depending upon luting cements. Fifty non-carious human premolar teeth were randomly divided into five experimental groups of 10 teeth each and luted with five luting cements. ($Bistite\;II^(R),\;Super-bond^(R),\;Variolink\;II^(R)$), Zinc phosphate and Glass-Ionomer cement) After 24 hours of being luted, all specimens were thermocycled 300 times through water bath of $5^{\circ}C\;and\;55^{\circ}C$ in each bath, then the quality of the marginal fitness was measured by the Digital Microscope and marginal leakage was characterized using Dye Penetration technique and the Digital Microscope The results were as follows : 1. The mean values of marginal fit were Bistite II($46.78{\mu}m$), Variolink II($56.25{\mu}m$), Super-Bond($56.78{\mu}m$), Glass-Ionomer($99.21{\mu}m$), Zinc Phosphate($109.49{\mu}m$) indicated a statistically significant difference at p<0.001. 2. The mean microleakage values of tooth-cement interface, restoration-cement interface were increased in the order of Variolink II, Bistite II, Super-Bond, Glass-Ionomer, Zinc Phosphate 3. Crowns luted with resin cement (Bistite II, Super-Bond, Variolink II, etc) exhibited less marginal gap and marginal leakage than those luted with conventional Glass-Ionomer and Zinc Phosphate cement. 4. The results indicated that all five luting systems yielded comparable and acceptable marginal fit.
Journal of the korean academy of Pediatric Dentistry
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v.24
no.1
/
pp.220-234
/
1997
The purpose of this study was to investigate the knowledge and attitude of a group of mothers who had infants about baby bottle tooth decay(BBTD) and dental caries prevention. The sample consisted of 261 mothers who had infants from 6 to 36 months from certain areas of Dae-jeon city. The mothers were asked to answer a questionnaire which included a series of questions regarding general information cencerning the infant and his mother, knowledge about BBTD and methods of prevention using fluoride, knowledge about behavioral risk factors contributing to caries of the infant, attitude toward oral health care of the infant, opinions regarding the effectiveness of methods to prevent dental caries and sources of oral health information. he results of this study were as follow. 1. 85.4% of the respondents thought that prolonged bottle feeding would harm the teeth of the infant, but 77% of the respondents had never heard of baby bottle tooth decay. 2. Levels of knowledge about methods of prevention using fluoride were relatively low and there were significant relationships between the levels of this knowledge and the educational level of the respondents(P<0.05). 3. Only 7.3% of the respondents thought that prolonged breast feeding would harm the teeth of the infant. 4. Overall oral health care of the infants was relatively insufficient. 5. Only 28.7% of the respondents selected either when the first tooth erupt or deciduous dentition complete as the time a infant should first be seen by a dentist. 6. 64.6% of the respondents thought that toothbrushing should be instituted once the first tooth appears. 7. Among the six methods of preventing caries in infants, respondents ranked the effective of fluoride lower than making regular dental visits and reducing intake of sugared foods. 8. Most frequently cited sources of information about dental health were newspapers, magazines and books(65%), followed by friends, neighborhoods and families (55%).
Journal of Dental Rehabilitation and Applied Science
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v.22
no.4
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pp.329-340
/
2006
Statement of problem: Damping of the peak force transmitted to implants has been reported by in vitro studies using impact forces on resin-veneered superstructures. Theoretical assumptions suggest that use of acrylic resin for the occlusal surfaces of a prosthesis would protect the connection between implant and bone. Therefore, the relationship between prosthesis materials and the force transmitted through the implant system also needs to be investigated under conditions that resemble the intraoral mechanical environment. Purpose: The purpose of this study was to analyze the fracture strength and modes of temporary prosthesis when a flange or occlusally extended structure were connected on the top of the abutment. Material and method: Modified abutments of winged and bulk design were made by casting the desired wax pattern which is made on the UCLA type plastic cylinder. Temporary crowns were made using templates on the modified abutments, and its fracture toughness and strain were compared to the traditional temporary prosthesis. To evaluate the effect of aging, 5.000 times of thermocycling were performed, and their result was compared to the 24hours specimen result. Results: The following conclusions were drawn from this study: 1. In the fracture toughness test, temporary crown's fracture line located next to the screw hole while modified designs with metal support showed fracture line on the metal and its propagation along the metal-resin interface. 2. Wing and bulk structure didn't show significant difference in the fracture toughness (p>0.05), but wing structure showed stress concentration on the screw hole area compared to bulk structure which showed even stress distribution. 3. In the fracture toughness test after thermocycling, wing and bulk structure showed increased or similar results in metal supported area while off-metal area and temporary crown showed decreased results. 4. In the strain measurement after thermocycling, its value increased in the temporary and bulk structure. However, wing structure showed decreased value in the loading point while increased value in the screw hole area. Conclusion: Wing type design showed compatible result to the bulk type that its application with composite resin prosthesis to the implant dentistry is considered promising.
A survey has been performed for the dental technicians and office workers in small cities of Julla buk-do on theis problem of cough, phlegm, wheezing, nasal cattarrh & cold, and breathlessness by using SUN-81-AL survey form which is a guletionaire on respiratory symptons The results of the analysis are as follaus. 1. The complaint on cough was made by 15 dental technicians(21.4% and by 10 office workerr(16.7%). Dental technicians showed higher complaint on cough than office workers. The predietor variable for cough was the working hours for dental technicians and the period of smoking for the office sorkess. 2. The complaints on phelgm was made by 34 dental technicians(48.6%) and by 9 office workers(15.0%). The predictor variable on phelgm was the working hour for dental techniume and the period of smoking for the office workers. There was no statistically significant difference between two group on their complaint level. 3. The complaint on the breathlessnesr was made by 24 dental technicians(34.3%) and by 22 office workers(36.7%). The predictor variable on breathlessness was the period of smoking for dental technicians and the working hour for office workers. 4. The wmplaing on nasal catarrh & cold wax made by 29 dental technicians(41.4%) and 22 office workers(36.7%). The predictr variable on nasal catarrh & cold was the working hour for dental workerr, and the perird of smoking for the office workers. 5. The complaint on wheezing was made by 9 dental technicians(12.9%) and 8 office workers(13.3%). The primary predictor variable on wheezing was the working hour for both groups, and the secondary predictor variable was the period of smoking. 6. The complaint on the chest and lung dislase was made by 12 dental technicians(17.1%) and 4 office workers(6.7%) dental technicians showed bigher complaint. on chest and lung disease than the office workers. Bronchitis was the higher frequency illuess reported from both of the groups among chest and lung disease. 7. In conclusion, the predictor variable on respiratory illness was the working hour for dental techniciane, and the period of smoking for the office workers 8. 25 dental technicians(35.7%) and 9 office workers(15.0%) selected air pllution as the most urgent problem that working environment, has had. There was statistically significant difference between two groups(P<0.001)
Journal of the Korean Society of Food Science and Nutrition
/
v.39
no.6
/
pp.864-871
/
2010
White and black garlic pastes were fermented by Leuconostoc mesenteroides and evaluated for its rheological and functional properties such as consistency, antioxidant and angiotensin converting enzyme inhibitory activity. The pH, acidity and solid content of black garlic paste were 4.60, 1.23%, 22.63%, respectively. The viable cell counts and consistency of fermented garlic was decreased by adding higher amounts of black garlic paste. Fermentation of white garlic (40%)/black garlic (10%) showed viable cell counts of $1.6\times10^{11}$, fluid consistency of 9.31 $Pa{\cdot}s^n$. Water and 70% ethanol extract from fermented garlic showed the polyphenol content of 6.29mg/mL and 5.99 mg/mL, respectively. Also, water extract indicated the DPPH radical scavenging effects and angiotensin converting enzyme (ACE) inhibitory activity with $IC_{50}$ 1.03 mg/mL and $IC_{50}$ 68.54 mg/mL, respectively. ACE inhibitory activity was increased with adding black garlic paste. Conversion of sucrose into dextran polymer in fermented garlic was drastically decreased by the addition of black garlic paste, indicating from 85% (0% black garlic) to 20% (20% black garlic) conversion yield. Garlic paste fermented with 10% black/40% white garlic showed the decrease in consistency and viable cell counts during both cold and freezing storages. In particular, consistency of fermented garlic was lower during freezing storage than cold storage, and the viable cell counts was drastically decreased after storage for 2 weeks.
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