• Journal of Dental Rehabilitation and Applied Science
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• v.34 no.2
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• pp.116-126
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• 2018

Purpose: The purpose of this study was to analyze the factors affecting the survival rate and the marginal bone level of dental implants that have functioned over 7-years. Materials and Methods: In 92 patients, 178 dental implants were included. Implant-related factors (diameter, length, prosthetic splint), patient-related factors (gender, smoking, plaque index, compliance to supportive periodontal therapy) and surgery-related factors (proficiency of surgeon, bone graft) were evaluated via clinical and radiographic examination. The marginal bone level was determined by intraoral standard radiography at the mesial and distal aspects of each implant using an image analysis software program. Results: The survival rate of all the implants was 94.94% and the marginal bone level was $0.89{\pm}1.05mm$, these results are consistent with other studies that present long-term good clinical results. Implant length and plaque index among several factors were statistically significant for implant survival rate (P < 0.05). Smoking and the presence of regeneration surgery were statistically significant for the marginal bone level (P < 0.05). Conclusion: Dental implant that have functioned over 7-years showed favorable long-term survival rates and marginal bone level. Implant length and plaque control should be considered for improving the long-term clinical results. It is needed that careful application of bone regeneration technique and smoking control for maintaining of marginal bone level.

• Journal of dental hygiene science
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• v.3 no.1
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• pp.1-4
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• 2003

The purpose of this paper is to present the potential application of tissue adhesive in the management of traumatized gingival wound in clinical dental hygiene practice. Cyanoacrylate adhesive has been used for closure of superficial laceration without suturing, which is available in periodontal and oral surgery. Small gingival or mucosal lacerations may occur by improper or excessive instrumentation of the dental hygienist during scaling and root planing procedure. In this circumstances, tissue adhesive is very effective, simple, and convenient method as an alternative to conventional wound closure by suturing. The tissue adhesive consists of monomeric n-butyl-2-cyanoacrylate, which polymerizes quickly in contact with tissue fluid. The sutureless treatment of gingival laceration with tissue adhesive has advantages of good esthetic results, less trauma, time saving, antibacterial and hemostatic effects. In addition, local anesthesia as well as re-visit for dressing and removal of suture are not required. Use of tissue adhesive could be beneficial to both dental hygienist and patient in the management of procedural error.

• Journal of dental hygiene science
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• v.5 no.4
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• pp.205-209
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• 2005

The number of workers in the study were 831 in their academic backgrounds are 53.6% workers who graduated from high schools 80.7% of the subjects replied that their economic state belonged to the middle class. 55.7% brushed their teeth at least three times a day and 58.7% of them brushed their teeth after they had dinner. In questions about living habits, 68.4% were found to drink alcohol, among whom 55.7% had more than one bottle of So-ju. As well, 57.7% of the subjects smoked, among whom 34.8% smoked half the pack or one whole pack of cigarettes a day and 30.0% had smoked more than 10 years. The result of oral examination showed that 25.9% had more than 1 decayed tooth, 14.8% had their teeth missing, 42.2% suffered periodontal diseases, and 11.7% had problems with wisdom teeth.

• Journal of dental hygiene science
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• v.10 no.2
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• pp.101-107
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• 2010

The purpose of this study was to analysis know the important oral environmental factors which affect halitosis components of the adult in order to provide basic data for halitosis prevention and establish a device to eliminate halitosis efficiently. The 97 adults who visited at the Dental Clinic in Metropolis (M=68, F=30) participated in this study that performed from March in 2009 to in 2010. The obtained results through items as caries status, periodontal status, salivary flow, the viscosity, pH, Snyder test, plaque deposit, tongue plaque and halitosis check were as followings. The average shame of halitosis components appeared at hydrogen sulfide 36.71 ppb methyl mercaptan 31.46ppb dimethyl sulfide 54.33 ppb and Ammonia 22.60 ppm. The normality and the detection comparative result dimethyl sulfide above reverse appeared highly at 46.9%, ammonia appeared highly at 52%. According to the Hydrogen sulfide level was a high relationship among age, CPI, tongue coat status, DMFT index which were statistically significant (p<0.05). According to the quantity of hydrogen sulfide level there was relationship where tongue coat status Saliva flow rate considers statistically(p<0.05). The quantity of methyl mercaptan level there was relationship where Dimethyl sulfide level, tongue coat status, Saliva flow rate considers statistically(p<0.05). The quantity of Dimethyl sulfide level there was relationship where Hydrogen sulfide level, ammonia level, tongue coat status, Saliva pH and Saliva flow rate considers statistically(p<0.05). Ammonia level there was relationship where Methyl mercaptan level, CPI, and Saliva flow rate considers statistically(p<0.05).

• Journal of dental hygiene science
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• v.9 no.1
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• pp.43-52
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• 2009

The realistic problem about the dental hygiene education in our country is what the correlation between theoretical education and clinical education is short, and what the systematically clinical-practice education is failing to be realized. In order to solve this problem, the aim is to introduce preceptor and to present necessity in order to apply preceptor to the practice education for dental hygiene department. 1. What is the largest in the difference between the observation experience and the performance experience by element in clinical-performance activity is the patience-care service sphere(P < .001). 2. A hospital with the highest observation-practice experience level in children with the observation experience by hospital was in order of K hospital, Y hospital, H hospital, B hospital, and A hospital(P < .001, P < .01). 3. A hospital was the highest in the difference of the performance-practice experience level by hospital. And, the next was in order of H hospital, Y hospital, K hospital, and B hospital(P < .001, P < .01). 4. As for recognition on importance of clinical-practice activity in dental hygienists, the dental hygienists with more than the third year were indicated to be the highest than the dental hygienists with less than the 3rd year among 58 dental hygienists. Given seeing the results of this study, the more systematic and educational clinical-practice environment will need to be improved by suggesting a role of preceptor and to seek for a plan for application in the clinical-practice education.

• Journal of dental hygiene science
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• v.14 no.2
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• pp.223-229
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• 2014

The aim of this study was to examine the effect of polycan-calcium gluconate complex on the levels of immune and inflammatory mediators in gingival crevicular fluid and serum from patients with periodontitis. A total of 39 patients with periodontitis took placebo (placebo group) or polycan-calcium gluconate complex (treatment group) twice a day for 4 weeks. At baseline and 4 weeks, gingival crevicular fluid (GCF) and blood was collected from each subjects. The secretion level of interleukin $(IL)-1{\beta}$ in GCF was measured by enzyme-linked immunosorbent assay (ELISA). Western blot analysis was conducted to determine the expression of matrix metalloproteinase (MMP)-8 and tumor necrosis factor $(TNF)-{\alpha}$ in GCF. Serum samples were analysed for MMP-8 by ELISA and C-reactive protein (CRP) by turbidimetric immuno assay. MMP-8 and $TNF-{\alpha}$ were significantly decreased in the treatment group at 4 weeks. The level of $IL-1{\beta}$ in the treatment group was significantly lower than those of the placebo group. No differences were observed in CRP levels. Taken together, these data indicate that taking of polycan-calcium gluconate complex led to reduction of inflammatory biomarkers in serum and GCF of periodontitis patients.

• Journal of dental hygiene science
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• v.15 no.4
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• pp.509-517
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• 2015

This study attempted to identify the entrance exam stress levels in high school students and analyze the relationship this entrance exam stress and perceived oral health status. Self-administered survey was conducted in total 304 students attending in academic high schools in Bucheon. For analysis, SPSS was used to perform t-test and one-way ANOVA. As a result of the study, the entrance exam stress level of academic high school students was 2.71. The level of sub-factors were that tension for exam/poor result was highest by 3.08 and the next were future uncertainty (2.81), parents pressure (2.56), and insufficient free time (2.52). The group with high entrance exam stress showed significantly high perceived degrees of temporomandibular disorder, oral mucosal disease and xerostama. Among sub-factors of stress, the group with high tension for exam/poor result stress had significantly high perceived degrees of dental caries, teporomandibular disorder, oral mucosal disease and xerostama. Because perception on oral health issues increased with high entrance exam stress in high school students, it is necessary to seek some ways to decrease oral health problems even though entrance exam stress is intensified. To do so, it is inferred that it will be very important to promote oral health education to develop ability of high school students to practice correct oral management method.

• Journal of dental hygiene science
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• v.8 no.1
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• pp.21-27
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• 2008

This research aims to investigate into company workers' general characteristics and their awareness of the hygiene of the mouth and practice of it, in order to prepare schemes to improve the hygiene of their mouth. The findings of the research are listed in the following: First, the workers have a high level of awareness of the effect of tooth-brushing to prevent periodontal diseases but a low degree of awareness of its effect to prevent decayed teeth and of the necessity of mouth hygienic supplies. Second, they have a high level of awareness of the necessity and importance of scaling, but most of them do not have their teeth scaled periodically. To repeat, they have a high level of awareness of the necessity of dental examination, but not many of them put such awareness of theirs into practice. Third, married workers have a higher level of awareness of the hygiene of their mouth than unmarried ones do. The higher concern they have about the hygiene of their mouth, the more awareness they have of the hygiene of their mouth. Fourth, the higher monthly average income they have, the more frequently they put into practice their awareness of the hygiene of their mouth. And the poorer hygiene of their mouth they have, the more strongly they put into practice their awareness of the hygiene of their mouth.

• Journal of dental hygiene science
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• v.13 no.1
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• pp.53-61
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• 2013

The aim of this study was to assess oral health related quality of life and evaluation the risk factors in menopausal woman. The subjects of this study were 531 menopausal woman from August 5 to September 27, 2012. Data were analyzed with t-test, one-way ANOVA, and binary logistic regression analysis SPSS 12.0. The most influential factors of perceived oral symptoms was menopause symptoms (odds ratio [OR], 3.72; 95% confidence interval [CI], 2.34~5.92), anxiety symptoms (OR, 2.14; 95% CI, 1.34~3.41), drinking (OR, 1.37; 95% CI, 1.04~1.81), living with a spouse (OR, 0.83; 95% CI, 0.70~0.98). There are a statistically significant relationship between perceived oral symptoms and menopause, anxiety symptoms. The postmenopausal woman can be the important menopause and anxiety symptoms interventions in maintaining perceived oral health as good.

• Journal of Life Science
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• v.16 no.5
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• pp.788-793
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• 2006

This study was carried out to investigate the biological effects from Codium fragile. Methanol extract of Codium fragile increased two times at 2500 ㎍/ml the growth of Lactobacillus plantarum that associated with probiotic properties of lactic acid bacteria of Kimchi. Ethyl acetate extract of Codium fragile inhibited the cellulase activity up to approximately 60% at $2500\;{\mu}g/ml$. Methanol extract of Codium fragile was fractionated into several subfractions and their antioxidant activities were measured by using DPPH radical scavenging and SOD-like activity. Especially the antioxidative activity of ethyl acetate fraction was shown higher than that of other fractions and its fraction showed higher contents of total phenolic compounds, indicating the positive relationship between DPPH radical scavenging effect and total polyphenol content. Stimulation of the macrophages RAW264.7 cells with lipopolysaccharide (LPS) resulted in increased production of nitric oxide (NO) in the medium. However, the methanol extract of Codium fragile showed marked inhibition of NO synthesis in a dose-dependent manner. This result suggest that Codium fragile plays significant role for activation of immune system in the pathogenesis of inflammatory diseases.