• Journal of the korean academy of Pediatric Dentistry
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• v.37 no.4
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• pp.453-460
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• 2010

This study was one of the caries pattern studies. The purpose was to investigate the degree of intraoral symmetry of dental caries in the primary dentition. The dmfs data from children aged 36 to 71 months were analyzed. Pearson correlation coefficients between right teeth and left teeth were from 0.558 (upper canines) to 0.847 (upper central incisors) and 0.905 in total (P<0.01). Differences between right teeth and left teeth were mostly not significant (P>0.05). Pearson correlation coefficients between upper teeth and lower teeth were from 0.150 (right lateral incisors) to 0.506 (right first molars) and 0.680 in total (P<0.01). Differences between upper teeth and lower teeth were mostly significant (P<0.05). Percentages of bilateral caries experience cases per cases having caries experience were from 34.0% (upper canines) to 80.1% (upper central incisors), and from 53.9% (distal) to 84.9% (mesial) in upper central incisors, from 34.1% (mesial) to 45.0% (occlusal) in upper first molars, from 20.7% (distal) to 48.0% (occlusal) in upper second molars, from 34.4% (buccal) to 58.1% (occlusal) in lower first molars, and from 29.7% (distal) to 61.4% (occlusal) in lower second molars, respectively.

• Journal of the korean academy of Pediatric Dentistry
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• v.34 no.2
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• pp.255-263
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• 2007

Composite resin restorations are widely used to restore decayed teeth or preventive restoration in children. Children often receive topical fluoride treatments on a semiannual basis. However there is concern that topical acidulated phosphate fluorides (APF) may cause deterioration of composite resins. The aim of this study was to evaluate the surface changes in composite resins due to topical fluoride application. Composite resins(Solitaire $2^{(R)}$, Metafil $CX^{(R)}$, Composan $LCM^{(R)}$, $Charmseal^{(R)}$) in topical fluoride agents were immersed and their surface roughness, weight loss and SEM findings were evaluated. The results were as follows: 1. The 4 minutes-immersion group showed more roughened surface than 1 minute-immersion group and the control group showed the smoothest surface among all the materials, and there was statistically significant difference between the groups except the Composan $LCM^{(R)}$ (P<0.05). 2. There was no significant difference between the 1 minute-immersion group and 4 minutes-immersion group in weight loss (P>0.05) 3. The experimental group treated with topical fluoride gel showed generally more roughened surface than control group in the SEM findings.

• The Journal of Korea Assosiation for Disability and Oral Health
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• v.14 no.1
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• pp.36-40
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• 2018

CATCH22 syndrome or DiGeorge syndrome is a medical acronym of cardiac defects, abnormal facial appearances, thymic hypoplasia, cleft palate, and hypocalcemia. Patients with CATCH22 syndrome are susceptible to infection due to an absent or hypoplastic thymus and often have difficulties in maintaining good oral hygiene, which may require dental treatment. We present a case of dental treatment for the uncooperative child with CATCH22 syndrome under general anesthesia. A 4-year-old, 14.8 kg boy with CATCH22 syndrome visited Seoul National University Dental Hospital for dental check up. The patient had multiple caries requiring dental treatment. He experienced the corrective heart surgery due to Tetralogy of Fallot a few years ago. General anesthesia was planned because his heart rate and vital sign had shown unstable during the previous conscious sedation procedure. Dental restorative treatments were successfully performed and no complications were observed during and after the procedure. Safe and effective dental management of the patients with CATCH22 syndrome could be performed with the help of general anesthesia and careful monitoring.

• The Journal of the Korea Contents Association
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• v.15 no.11
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• pp.329-337
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• 2015

Fluorine is an element that promotes dental caries preventive effect at proper concentration level, but may have significantly undesirable impact on dental caries if correct information of fluorine is not recognized. Therefore, this study is intended to evaluate fluorine awareness among the adults in their 20s and analyze oral health conditions based on such awareness in order to promote dental caries preventive effect and convey correct knowledge of fluorine. For this study, 82 adult men and 102 adult women in their 20s, all of whom lived in Daegu, Gyeongsangbuk-do, were surveyed from May 1, 2014 to June 30 of the same year, along with oral health examination to evaluate their oral health conditions. The results of the analysis showed that 19.46% of respondents answered "No" to the question related to awareness towards the use of fluorine in DT rate dental clinic based on the degree of fluorine awareness, which was higher than 11.10% who answered "Yes"(p<.05). Moreover, 18.32%of respondents answered "No" to the question related to whether they were checking the label indicating the fluorine content in product, which was the highest rate, suggesting that the rate was higher when there was stronger tendency to avoid reading the precaution notice (p<.05). In addition, 71.98% of respondents answered "Yes" to the question associated with the awareness to the use of fluorine in FT rate dental clinic based on the fluorine awareness, which was higher than 49.04% of respondents who answered "No" (p<.05). This study is meaningful in that it provides basic data for the implementation of fluorine prevention projects in the period ahead by determining the effect of fluorine awareness on oral health conditions. Based on aforesaid results, both educational and promotional activities need to be carried out vigorously to help raise fluorine awareness.

• The Journal of Korea Assosiation for Disability and Oral Health
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• v.15 no.1
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• pp.35-39
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• 2019

Oculo-cerebro-renal syndrome, known as Lowe syndrome, is an X-linked gene disorder characterized by congenital cataracts, brain abnormalities and renal dysfunction. Tooth crowding, taurodontism, delayed eruption in the permanent dentition and over-retained primary teeth with ectopic eruption of the permanent teeth have been reported as dental findings. Because of the high incidence of poor cooperation, patients with Lowe syndrome have difficulties in maintaining good oral hygiene, which may require dental treatment. We present a case of dental treatment for the uncooperative child with Lowe syndrome under general anesthesia. A 4-year-old, 11.2 kg boy with Lowe syndrome visited Seoul National University Dental Hospital for gingival swelling. The patient had multiple caries requiring dental treatment. Because of his past history of malignant hyperthermia during inhalation induction, anesthesia was induced and maintained with total intravenous anesthesia (TIVA) after medical consultation. Dental restorative treatments were successfully performed and no complications were observed during and after the procedure. Safe and effective dental management of the patients with Lowe syndrome could be performed with the help of general anesthesia and careful monitoring.

• The Journal of Korea Assosiation for Disability and Oral Health
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• v.13 no.1
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• pp.14-18
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• 2017

X-linked dominant hypophosphataemic rickets(XLHR) is a hereditary disease generally transmitted as an X-linked dominant trait. Oral manifestations include poorly mineralized dentin, enlarged pulp chambers and root canals, early tooth loss. Also, spontaneous dental abscesses could occur in the absence of a history of trauma or caries. This report describes the clinical finding and dental treatment of a child, who came to the hospital for treatment caries but was refered to pediatrics because the child showed clinically short of status, bow-leg and radiographically enlarged pulp chamber and canal, there as diagnosed as XLHR. After the diagnosis, 13 years follow-up and treatment were performed.

• Journal of Dental Rehabilitation and Applied Science
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• v.30 no.4
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• pp.329-338
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• 2014

Patients who lost molars from dental caries or periodontitis have difficulty in maintaining their vertical dimension because their incisors and premolars also show vertical tooth movement. Missing posterior molars leads to occlusal interference and collapse of occlusal plane due to extrusion of opposite teeth and tipping of adjacent teeth. When this condition persists over long time, mandible moves forward, so it causes mobility and labioversion of upper incisors. This progress cannot be stopped spontaneously and the situation gets worse and worse. Therefore, for a patient with pathologic teeth migration caused by chronic periodontitis, interdisciplinary approach which is including periodontal treatment, orthodontic teeth alignment and prosthetic restoration of missing molars is required. This case report shows successful multidisciplinary approach to a patient who lost vertical dimension due to severe dental caries and periodontitis.

• Journal of the korean academy of Pediatric Dentistry
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• v.39 no.3
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• pp.242-248
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• 2012

Children usually have varying degree of caries in primary anterior teeth, and treatment planning for each case prescribed by each dentist can also be varied. This survey was conducted to compare the preferred treatment method and restorative materials between general dentists and pediatric dentists in regard to the treatment of primary incisors. The questionnaires, composed of 18 questions were sent to 45 general dentists and 50 pediatric dentists. Among which 30 and 31 questionnaires were retrieved respectively. The collected data were analyzed by rate and the results were as follows: 1. For the teeth with initial caries without cavitation, general dentists showed the tendency to prefer restorative treatment(30%) or observation without any treatment(42%), whereas pediatric dentists prefer preventive treatment(76%). 2. The primary factor in choosing restorative materials by both groups was its manipulativeness. 3. For anterior esthetic restoration, general dentists seldom use the full-coverage restoration(13%) but resin restoration(75%), whereas pediatric dentists frequently used full-coverage crow(64%). 4. In the treatment of dentinal caries, pediatric dentist did not perform the treatment lesser than 2.0 years before the exfoliation (compared to 1.2 years of general dentist). 5. In the treatment of 1 year children, both pediatric and general dentists tend to select preventive procedure as first choice of treatment(84%, 52%). When treating primary incisor caries, it is shown that pediatric dentists are more interested in restorative/preventive treatment than general dentists are.

• Journal of the korean academy of Pediatric Dentistry
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• v.42 no.3
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• pp.218-225
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• 2015

This study used sodium fluorescein to improve imaging diagnostic ability by increasing the fluorescence difference between sound enamel and caries lesions. It also made it easier to discriminate between stain and caries lesions using quantitative light-induced fluorescence (QLF). Half of the specimen surface was covered with nail varnish as a control. Specimens were divided randomly in six decalcification groups and decalcified for different lengths of time. Then, ${\Delta}F$ was measured using QLF-D. After applying 0.075% sodium fluorescein, we measured ${\Delta}F$ again and compared it with the initial value. After cutting the central portion of the specimen, we measured the lesion depth using scanning electron microscopy. The lesion surfaces observed with QLF were darker than normal enamel, whereas they were lighter than normal enamel after applying fluorescein. Longer decalcification time was associated with greater fluorescent dye penetration. The ${\Delta}F$ measured after applying fluorescein was higher than the initial value (p < 0.05). Due to QLF measurement using fluorescein being more sensitive for diagnosing early decalcification, this approach will enable early diagnosis of dental caries before the cavity formation stage, allowing the treatment of early caries lesions. With QLF and sodium fluorescein, we can easily discriminate between stain and caries lesions.

• Journal of dental hygiene science
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• v.14 no.3
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• pp.379-389
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• 2014

This study intended to examine the health status and quality of life among the elderly patients who stayed in geriatric hospitals for a long period of time. The study involved 222 elderly who were older than 65-year-old, an oral examination was conducted in 10 geriatric hospitals located in the metropolitan area and Chungcheong-do. Cross-tabulation, one-way ANOVA, t-test, and Stepwise multiple regression were performed for analysis. The average number of teeth among the subjects was 11.22 and that of dental caries was 1.17. Also, the average number of teeth mobility was 0.93 and halitosis was detected among 81.9%. Only 29.70% reported absence or a kind of systemic disease and 70.31% of the subjects was shown to have more than two kinds of complex disease. In addition, 87.8% of the subjects had depression and among them, 55.40% showed serious depression. The average score on quality of life was 2.62 points and as for the related factors, the number of remaining teeth and dental caries were counted along with care grade, hospitalization period, and age. According to such results, the oral health status among the elderly patients staying long in geriatric hospitals were not good in general; also they showed high level of systemic disease and depression and low quality of life.