• Journal of Periodontal and Implant Science
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• v.35 no.3
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• pp.577-590
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• 2005

The purpose of this study was to evaluate the effects of toothpaste containing hydroxyapatite for patients who complained dental hypersensitivity. Before baseline of application of toothpaste with hydroxyapatite, tooth brushing instruction was done respectively and the several indices were measured at baseline, 2, 4, 8 weeks. Clinical indices were estimated, and responses to cold, compressive air, tactile stimulus were evaluated with verbal rating score. Relief effects and visual analogue scale were also evaluated. The results of this study were as follows 1. The occurrence rate of hypersensitivity in upper jaw was higher than that of lower jaws, and molar area showed more hypersensitivity than premolar and incisor area. Buccal site was hypersensitive followed by interproximal and lingual site. 2. Plaque index, gingival index and probing depth reduction were gradually improved after Tooth Brushing Instruction and using toothpaste. 3. Subjects showed most sensitive response to cold stimuli than compressive air and tactile stimuli. 4. The relief effect was increased during using tooth paste and complete relief was increased especially at 8 weeks. 5. Visual analogue scale was increased. In conclusion, it was confirmed that toothpaste containing microcrystalline hydroxyapatite have the relief effect of tooth hypersensitivity. During 8 weeks, stimulus responses were decreased and hypersensitivity relief effect was increased.

• Journal of Periodontal and Implant Science
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• v.39 no.1
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• pp.27-36
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• 2009

Purpose: The stability of periodontal condition and marginal bone level were important to achieve long-term success of dental implant treatment. The aim of this study was to evaluate periodontal conditions and marginal bone loss around 67 GSII(OSSTEM, Seoul, Korea) dental implants with dual-microthread at the neck portion, 1 year after prosthetic loading. Materials and methods: Sixty-seven GS II dental implants in 27 patients(mean age; $47.4{\pm}14.0$ years) who received implant treatments at Pusan National University Hospital, were included in this study. Thirteen US II(OSSTEM, Seoul, Korea) implants with smooth neck design were selected for the control group. Periodontal and radiographic evaluations were carried out at baseline, 6 months and 12 months after prosthetic loading. Results: In the GS II group, plaque index(PI), gingival index(GI) and probing depth(PD) increased as time passed. In the US II group, GI and PD increased. Although marginal bone level was lower in the US II group in all evaluation periods, the changes between the periods were not statistically significant(p>0.05). In each period, periodontal parameters were not statistically significant between groups. Conclusion: One year after prosthetic loading, GS II and US II dental implants showed similar periodontal conditions and marginal bone response, and were within the criteria of success.

• Journal of Korean society of Dental Hygiene
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• v.15 no.2
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• pp.319-324
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• 2015

Objectives: The purpose of this study was to verify the oral environmental change in using the natural oral cleaner containing propolis and prevention effect of oral disease. Methods: The subjects were 60 university students in Gangwon province. The groups consisted of 30 students of experimental group and 30 students of control group. The subjects were those who did not take the antipsychotic, diuretic, antihistamine, and anesthetic. The students rinsed their mouth with propolis mixture of oral cleanser for 4 weeks after receiving informed consent from October 1 to November 2, 2012. Collected saliva was measured for amount, salivary consistency, pH, plague index, gingival index, and halitosis. Results: The amount of salivary in propolis mixture of oral cleansing group remarkably increased (t=2.16, p<0.05). pH was alkaline in the group with oral cleaner containing the propolis (t=2.80, p<0.01). The bad breath remarkably decreased in the group with oral cleaner containing the propolis (t=-5.77, p<0.001). Conclusions: The use of the oral cleaner containing the propolis increased the amount of salivary and pH. The use of oral cleaner containing the propolis reduces halitosis and maintains good quality of oral hygiene.

• The korean journal of orthodontics
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• v.53 no.6
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• pp.374-392
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• 2023

Objective: Assess and evaluate the different indicators of oral health-related quality of life (OHRQoL) among patients treated with clear aligners (CAs) versus those treated with conventional fixed orthodontics (FAs). Methods: An electronic search was performed on the database is Web of Science, Scopus, and Embase databases. Randomized and non-randomized control trials, cross-sectional, prospective cohort and retrospective trials were included. Quality was assessed with risk of bias tool and risk of bias in non-randomised studies. Meta-analyses were performed with random effects models, estimating the standardized and non-standardized mean differences, odds ratio and risk ratio as the measure of effect. The effect on time was determined using a meta-regression model. Results: Thirty one articles were included in the qualitative synthesis and 17 in the meta-analysis. CAs had a significantly lower negative impact on QoL, with an "important" effect size, while the influence of time was not significant. Periodontal indicators plaque index (PI), gingival index (GI), probing depth (PD), and bleeding on probing show significantly better values in patients treated with CAs, with moderate to large effect sizes. PI and GI have a significant tendency to improve over time. In microbiological indicators, CAs present a lower biofilm mass without differences in the percentage of patients with high counts of Streptococcus mutans and Lactobacilli bacteria. The risk of white spot lesion onset is ten times lower in carriers of CAs. Conclusions: Patients wearing CAs show better periodontal indicators, less risk of white spot development, less biofilm mass and a better QoL than patients with FAs.

• Journal of Periodontal and Implant Science
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• v.53 no.5
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• pp.376-387
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• 2023

Purpose: Peri-implantitis (PI) is an inflammatory condition associated with the destruction of bone tissue around a dental implant, and diode lasers can be used to treat this disease. In this study, we aimed to evaluate the effectiveness of a 940-nm diode laser for the nonsurgical treatment of PI. Methods: Twenty patients (8 women and 12 men) were enrolled in a split-mouth randomized controlled study. In the control group (CG), mechanical debridement with titanium curettes accompanied by airflow was performed around the implants. The test group (TG) was treated similarly, but with the use of a diode laser. Clinical measurements (plaque index, gingival index [GI], probing pocket depth [PPD], bleeding on probing [BOP], clinical attachment level, and interleukin-1β [IL-1β] in the peri-implant crevicular fluid) were evaluated and recorded at baseline and 3 months. IL-1β levels were determined using the enzyme-linked immunosorbent assay method. Results: The symptoms were alleviated in both groups at 3 months as assessed through clinical measurements. GI, BOP, and PPD were significantly lower in the TG than in the CG (P<0.05). The IL-1β level increased post-treatment in both groups, but this increase was only statistically significant (P<0.05) in the CG. Conclusions: The diode laser enabled improvements in clinical parameters in the periimplant tissue. However, it did not reduce IL-1β levels after treatment. Further studies about the use of diode lasers in the treatment of PI will be necessary to evaluate the effects of diode lasers in PI treatment.

• The Journal of Korean Medicine Ophthalmology and Otolaryngology and Dermatology
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• v.37 no.2
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• pp.14-26
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• 2024

Objectives : The purpose of this study is to assess the feasibility of conducting a study on traditional Korean medicine treatments for periodontal diseases, specifically gingivitis and mild periodontitis. Methods : This study will employ a randomized, controlled, parallel-group design. Subjects with gingivitis and mild periodontitis will be recruited in one university hospital. In total, 45 subjects will be randomized into three arms (Acupuncture therapy group, herbal mouthwash group and usual care group), and will be followed up for 4 weeks. We will assess clinical variables such as, pocket depth, bleeding on probing, gingival index, plaque index, visual analog scale, uroqol-5 dimensions-5 levels to analyze changes in microbial flora before and after the intervention. Results : The protocol for this study was approved by the Institutional Review Board (IRB) of Dongguk University Ilsan Oriental Medicine Hospital, and registered with the Korean Clinical Trial Registry on March 29, 2024. Conclusions : This study is the first clinical research on periodontal diseases conducted in a Korean traditional medicine institution. The research aims to broaden the scope of traditional Korean medicine and is expected to serve as crucial data for future large-scale studies.

• Journal of Periodontal and Implant Science
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• v.50 no.3
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• pp.135-145
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• 2020

Purpose: The aim of this study was to evaluate the serum levels of oxidized low-density lipoprotein (oxLDL), anti-oxLDL, and myeloperoxidase (MPO) in hyperlipidemic patients with periodontal disease. Methods: This study included 123 patients with hyperlipidemia categorized based on metabolic control as mild to moderate (H1) (n=66) or poor (H2) (n=57), as well as systemically healthy controls (C) (n=68). Serum levels of lipids, oxLDL, anti-oxLDL, and MPO were evaluated, along with clinical periodontal parameters. Results: The percentage of bleeding on probing (BOP%) and the clinical attachment level were significantly higher in the H2 group than in the C group. Patients with hyperlipidemia had a relatively high risk of developing periodontal disease. The oxLDL and anti-oxLDL levels were higher in H2 patients with periodontitis than in the control or H1 patients with periodontitis. In the H1 and H2 groups, the ratio of total cholesterol to high-density lipoprotein was significantly correlated with gingival index, BOP%, and oxLDL levels. Conclusions: Our findings indicate that the lipoprotein-associated inflammatory mediators of oxLDL, anti-oxLDL, and MPO may play an important role in the relationship between periodontal disease and hyperlipidemia.

• Journal of Periodontal and Implant Science
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• v.38 no.3
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• pp.483-492
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• 2008

Purpose: The purpose of this study was to compare clinical effect of the Langer & Langer technique, the modified Langer & Langer technique and Bruno technique. Material and Methods: 30 patients who have gingiva recession(Miller class I or class II) were carried root coverage. Langer & Langer technique(14 patients/32 tooth), modified Langer & Langer technique(5 patients/10 tooth) and Bruno technique(11 patients/18 tooth) was carried. At baseline and average 3 months after operation, it was estimated clinical index(Pocket depth, gingiva recession, clinical attachment level, keratinized gingiva, scar tissue, root coverage rate) by Williams style probe. Result: Root coverage rate is indicated Langer & Langer technique(8S%), Modified Langer & Langer technique(86%) and Bruno technique(90%). Conclusion: All three of the procedures were effective in gingival recession and improved clinical parameters.

• Journal of dental hygiene science
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• v.12 no.2
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• pp.163-170
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• 2012

The purpose of this study was determine the effects of professional tooth cleaning and plaque control instruction(PT & PCI) on reduction of peri-implantitis. A total 80 implant patients were investigated using O'Leary plague index(PI), L${\ddot{o}}$e & Silness gingival index(GI), implant bone loss(BL). While the PT & PCI was conducted by using 'Watanabe method' after scaling for the experimental group, the engine polishing and a plaque control instruction was operated by rolling method after scaling for the control group. The collected data were analyzed with t-test, ANOVA, paired t-test and stepwise multiple regression. PI and GI of the experimental group significantly decreased than the control group(p<0.05). BL, also tended to decreased in the experimental group than the control group(p=0.155). Multiple regression analysis, the factors that was highly correlated with PT & PCI on the PI and GI. According to the implant characteristics, implant location and duration were closely related to PI(p<0.05). Therefore, the PT & PCI is one of the effective methods to reduce the failure caused by the peri-implantitis. Based on this conclusion, that it would be meaningful if the proposed PT & PCI is applied to the oral health management programs of the implant patients.

• Journal of the korean academy of Pediatric Dentistry
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• v.32 no.4
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• pp.717-725
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• 2005

It is widely known that individuals with Down's syndrome(DS) often develop early onset severe periodontal diseases. In this study, We examined the prevalence of periodontopathic bacteria in DS patients to compare controls with mental disabilities(MD) The subjects were 27 DS patients (7 to 19 years old) and 27 age-matched controls with MD. Plaque index and gingival index were measured. And 5 pathogens, Actinobacillus actinomycetemcomitans, Porphyromonas gingivalis, Tannerella forsythia, Treponema denticola, Fusobacterium nucleatum, were surveyed in subgingival plaque samples using a polymerase chain reaction. No significant difference in plaque index and gingival index were observed between the DS and control group. The prevalence in DS was 96.3% for F. nucleatum, 74.1% for T. forsythia, 63.0% for P. gingivalis, 55.6% for A. actinomycetemcomitans. 40.7% for T. denticola. No significant differences were observed in the prevalence of periodontopathic bacterias between the DS and control. Prevalence of P.g(16.7%) at age $7{\sim}10$ is lower than other age group in DS, but its prevalence increased with age. Prevalence of A.a(83.3%) is peak at age $7{\sim}10$ in DS. These results suggest that various periodontopathic pathogens can colo nize in the very early childhood of DS and MD patients. But no significant difference was observed in the prevalence of periodontopathic bacterias between the DS and control.