• Journal of Korean society of Dental Hygiene
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• v.19 no.5
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• pp.825-834
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• 2019

Objectives: To analyze whether there are perceptual differences in internet oral health information use between ordinary people who underwent dental treatments and dental hygienists. Second, the study aimed to analyze related issues, and, third, to find a developmental direction to provide fundamental information for developing patient-customized websites to improve dental services to suit contemporary needs. Methods: From September 1 to September 30, 2018, a questionnaire survey was conducted, with 367 participants (209 dental hygienists and 149 patients) in order to analyze their objective agreement, subjective congruence, and accuracy. As a study tool, the questionnaire consisted of 11 items about the perception of internet oral health information use and 11 on the estimated perceptions of both groups in order to compare their perceptions and estimates of each other. Results: Objective agreement was analyzed and, as a result, dental hygienists and patients were found to demonstrate similar results in terms of their perceptions of internet oral health information use. With regard to subjective agreement, the study subjects either underestimated or overestimated internet oral health information use more than they perceived. In terms of accuracy, dental hygienists and patients had different perceptions regarding internet oral health information use. Therefore, accuracy was somewhat low. Conclusions: In order to improve individuals' self-care ability and increase therapeutic instructional adherence for oral healthcare, it is necessary to apply internet oral health information properly to each patient's individual oral state.

• The korean journal of orthodontics
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• v.48 no.6
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• pp.357-366
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• 2018

Objective: The purpose of this study was to analyze the transverse dental compensation in reference to the maxillary and mandibular basal bones using cone-beam computed tomography (CBCT) and evaluate the correlations between transverse dental compensation and skeletal asymmetry variables in patients with skeletal Class III malocclusion and facial asymmetry. Methods: Thirty patients with skeletal Class I (control group; 15 men, 15 women) and 30 patients with skeletal Class III with menton deviation (asymmetry group; 16 men, 14 women) were included. Skeletal and dental measurements were acquired from reconstructed CBCT images using OnDemand3D 1.0 software. All measurements were compared between groups and between the deviated and nondeviated sides of the asymmetry group. Correlation coefficients for the association between skeletal and dental measurements were calculated. Results: Differences in the ramus inclination (p < 0.001), maxillary canine and first molar inclinations (p < 0.001), and distances from the canine and first molar cusp tips to the midmaxillary or midmandibular planes (p < 0.01) between the right and left sides were significantly greater in the asymmetry group than in the control group. In the asymmetry group, the ramus inclination difference (p < 0.05) and mandibular canting (p < 0.05) were correlated with the amount of menton deviation. In addition, dental measurements were positively correlated with the amount of menton deviation (p < 0.05). Conclusions: Transverse dental compensation was correlated with the maxillary and mandibular asymmetry patterns. These results would be helpful in understanding the pattern of transverse dental compensation and planning surgical procedure for patients with skeletal Class III malocclusion and facial asymmetry.

• The korean journal of orthodontics
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• v.50 no.6
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• pp.407-417
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• 2020

Objective: To investigate the dental phenotypes and treatment modalities (Tx-Mod) in Korean patients with Parry-Romberg syndrome (PRS) using longitudinal data. Methods: The samples consisted of 10 PRS patients, who were treated and/or followed-up at Seoul National University Dental Hospital between 1998 and 2019. Using a novel PRS severity index based on the numbers of the atrophy-involved area and asymmetry-involved item, we classified them into mild (n = 3), moderate (n = 2), and severe (n = 5). Dental phenotypes, including congenitally missing tooth (Con-Missing-Tooth), microdontia, tooth with short root (Short-Root), tooth with dilacerated root, and delayed eruption/impacted tooth, were investigated along with Tx-Mod. Results: The side of occurrence of all dental phenotypes showed 100% concordance with the side of PRS involvement. The most two common dental phenotypes were Con-Missing-Tooth and Short-Root (n = 29 and n = 17 in six patients). The sums of the average number of Con-Missing-Tooth and Short-Root increased from mild PRS to moderate PRS and severe PRS cases (1.0, 6.0, and 6.2). In terms of Tx-Mod, growth observation due to mild atrophy, fixed orthodontic treatment, and grafting were used for mild PRS cases. Tx-Mod for moderate PRS cases involved growth observation for surgery due to an early age at the initial visit. For severe PRS cases, diverse Tx-Mod combinations including unilateral functional appliance, fixed orthodontic treatment, growth observation, grafting, and orthognathic surgery were used. Conclusions: The novel PRS severity index may be useful to provide primary data for individualized diagnosis and treatment planning for PRS patients.

• Journal of Korean society of Dental Hygiene
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• v.8 no.3
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• pp.107-114
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• 2008

The purpose of this study was to examine the awareness of adult patients visiting dental clinics about periodontal diseases. The subjects in this study were 204 patients who paid a visit to five dental clinics and a dental hospital in the region of Jeonju. After a survey was conducted, the results were obtained as follows: 1. With regard to toothbrushing method, the most of the male patients(43.8%) brushed their teeth by rolling the toothbrushes up and down, and the most of the female patients(46.1%) did that both up and down and right and left. As to the influence of smoking, the largest number of the smokers(50.0%) and nonsmokers(40.4%) brushed their teeth both up and down and right and left. statistically significant differences were shown by gender and smoking(p<0.05). 2. As for knowledge acquisition route on periodontal diseases by gender, there was no way for the men(38.2%) to get the information, and the largest number of the women (43.4%) acquired the information through the internet. With respect to smoking, the largest numbers of the smokers(38.2%) and nonsmokers(37.5%) got the information by the internet, and statistically significant differences were found (p<0.05). 3. Concerning treatment method of periodontal diseases provided by the dental clinic, the largest number of the men(33.7%) got their teeth scaled, and the greatest group of the women(29.6%) had their gums treated. The treatment method made statistically significant differences by gender (p<0.05). Regarding smoking, the largest group of the smokers(32.4%) had their teeth scaled, and the largest number of the nonsmokers(28.7%) got their gums treated. significant differences were made statistically by smoking (p<0.05). 4. As to instruction on the prevention of periodontal diseases, the largest group(63.2%) intended to take that. The second (23.0%) was eager to do it, and the third(13.8%) was unwilling to do it.

• The Journal of the Korean dental association
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• v.10 no.8
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• pp.503-507
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• 1972

Authors had observed the average numbers of the fille teeth per mouth, and the occurrence rates of the secondary caries around the various forms of the filling bodies in 2,093 dental out-patients in the Infirmary, College of Dentistry, Seoul National University in 1970, in order to make a basic data considered in the establishment of the policy for the dental health in Korea. The obtained results were as follows: 1. In Korea, the average number of the filled teeth per mouth in the dental out patients had been increased gradually. 2. In the dental out-patients in 1970, the relative rate of amalgam filling bodies had been decreased, but the relative rate of gold inlays increased compared with the dental out-patients in 1963 and 1964. 3. The secondary caries around the various forms of the filling bodies was 6.38 percent of total caries cavities. 4. 17.14 percent of total filling bodies was accompanied with the secondary caries. 5. The secondary caries had been occurred from the margin in 22.52 percent of amalgam filling bodies, in 8.84 percent of gold inlays, in 18.84 percent of silicate filling bodies, and in 22010 percent of temporary filling bodies.

• Journal of Dental Anesthesia and Pain Medicine
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• v.17 no.4
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• pp.297-305
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• 2017

Background: Fiberoptic nasotracheal intubation (FNI) is performed if it is difficult to open the mouth or if intubation using laryngoscope is expected to be difficult. However, training is necessary because intubation performed by inexperienced operators leads to complications. Methods: Every resident performed intubation in 40 patients. Success of FNI was evaluated as the time of FNI. First intubation time was restricted to 2 min 30 s. If the second attempt was unsuccessful, it was considered a failed case, and a specialist performed nasotracheal intubation. If the general method of intubation was expected to be difficult, awake intubation was performed. The degree of nasal bleeding during intubation was also evaluated. Results: The mean age of the operators (11 men, 7 women) was 27.8 years. FNI was performed in a total of 716 patients. The success rate was 88.3% for the first attempt and 94.6% for the second attempt. The failure rate of intubation in anesthetized patients was 4.9%, and 13.6% in awake patients. When intubation was performed in anesthetized patients, the failure rate from the first to fifth trial was 9.6%, which decreased to 0.7% when the number of trials increased to > 30 times. In terms of awake intubation, there was no failed attempt when the resident had performed the FNI > 30 times. The number of FNIs performed and nasal bleeding were important factors influencing the failure rate. Conclusion: The success rate of FNI increased as the number of FNI performed by residents increased despite the nasal bleeding.

• Journal of Dental Anesthesia and Pain Medicine
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• v.18 no.6
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• pp.367-373
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• 2018

Background: Fear of local anesthesia (LA) is a significant impediment to dental care as many patients delay or avoid treatment to avert pain. Computer-controlled local anesthetic delivery system (CCLAD), with constant and controlled rate of flow, present a painless alternative. The present study aimed to compare anxiety and pain perceived with conventional and computerized systems, for different stages of anesthesia delivery when administering various nerve blocks. Methods: One hundred patients requiring bilateral LA participated in the study. One side was anesthetized using one system and the contralateral side was anesthetized using the other, in two separate appointments. Patients assigned anxiety scores on a 5-point scale and used the visual analogue scale (VAS) for pain determination at needle insertion, during delivery of anesthetic solution, immediately after injection, and at the end of the periodontal procedure. Each patient's preference for the delivery system of future injections was also recorded. Results: Patients reported significantly lower anxiety levels with CCLAD compared to the syringe. Significantly lower mean VAS scores for anesthesia deposition, pain immediately after, and at the end of the periodontal procedure were also noted. However, pain at needle insertion was comparable between the two systems, with no statistical significance. Overall, 64.4% patients preferred CCLAD for future anesthesia. Conclusion: Lower pain perceived with CCLAD and higher preference for the system suggest that CCLAD should replace conventional syringes to allow pain-free dental treatment.

• The Journal of the Korean dental association
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• v.48 no.7
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• pp.538-546
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• 2010

Dental surgical procedures are potentially stress-inducing to not only patients but clinicians especially in case of medically compromised patients. The body response to dental stress involves the cardiovascular, respiratory and the endocrine system. To minimize the stress to the medically compromised patients, the stress reduction protocols should be established. The protocols include (1) Recognize the patient's degree of medical risk (2) Medical consultation before dental therapy (3) Schedule the patient's appointment in the morning (4) Monitor and record preoperative, perioperative and postoperative vital signs (5) Intra-venous sedation during surgical procedures (6) Adequate pain control during therapy (7) Short length of appointment time (8) Contact the patients on the same day. Two cases of Bisphosphonate-related osteonecrosis of the jaws were analyzed. There were 2 women, and the mean age was 70 years (range, 64~74 years). both are medically compromised, with steroids. Both patients were taking an oral bisphosphonate for several years. BRONJ is defined as an area of exposed bone of more than 8 weeks - duration in a patient taking a bisphosphonate for bone disease. Bisphosphonates have been widely prescribed over the last decade for a range of bone diseases, mainly intravenously for bone cancers and orally for osteoporosis. Although it is still controversial as to precisely how the bisphosphonates work, generally it is accepted that they prevent osteoclast action, with consequent cessation of osteoblast activity, so that the bone turnover is markedly reduced or ceased. The aim of this study is to informed the clinicians how to prepare and recognize in case of the BRONJ with medically compromised patients.

• Asian Pacific Journal of Cancer Prevention
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• v.16 no.13
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• pp.5439-5444
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• 2015

Background: One of the main causes of delay in diagnosis of oral cancer is lack of awareness about aetiology and symptoms among the general population. The aim of this study was to assess the knowledge and practice of patients regarding oral cancer and their attitude towards tobacco cessation. Materials and Methods: This study was carried out in Isfahan-Iran in 2014. A 29-item self-administrated questionnaire was designed and piloted and distributed to patients attending dental clinics. Questions were focused on awareness about oral cancer risk factors, signs and symptoms, places in the mouth which are more susceptible and attitude toward tobacco cessation. Chi-square, T-test, ANOVA and logistic regression tests were used for statistical analysis. Results: A total of 546 valid completed questionnaires were obtained. The mean knowledge score of patients was 4.1(${\pm}2.7$) out of 13. Some 80% of patients did not know about early manifestations of oral cancer. Only 18% knew the most likely sites of oral cancer. Only 43.1% and 65.2% of patients reported alcohol and tobacco consumption as the main risk factors but they had a fair knowledge about other risk factors. There was no significant difference in Knowledge level between patients regarding their sex, educational levels and age. Most patents (90%) expected their dentists to warn them about the harmful effects of smoking and showed willingness to quit if recommended. Conclusions: Knowledge about oral cancer was found to be quite low. It seems necessary to increase the level of public awareness using educational programs with cooperation of dentists in tobacco cessation programs.

• The Journal of the Korean dental association
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• v.46 no.6
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• pp.384-393
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• 2008

Many dental surgeries including implant surgery, orthognathic surgery etc, have possibility of neurologic injury. As neurosensory dysfunction has no definitive treatment modality and shows slow recovery, patients have discomforts and make the legal conflicts with surgeons. The purpose of this study was to survey the types and subjective evaluation of patients with neurosensory dysfuction after dental surgery. This study included 66 patients with postoperative neurosensory dysfunction who were operated at Seoul National University Bundang Hospital from Dec 2003 to Jun 2007. Male were 28 and female were 38. Age was from 17 to 74 years old. The results of subjective evaluation of neurosensory dysfunction were as followings. 1. The sites of the altered sensation were chin, lip, tooth, tongue and so on. 2. 40.7% of the patients didn't explain accurately about their symptoms. 29.2% of the patients expressed anesthesia and 26.2% mild discomfort. 3. The altered sensation was expressed mostly in touching, mastication and speaking. 52.3% of the patients suggested that their symptoms always existed. 4. Neuropathic pain existed in 44.6% of the patients. 48.3% of the patients suggested that pain was triggered by touching. Neuropathic pain always existed in 41.4% of the patients. 5. Patients showed negative responses on the question that they will take operations which cause the risk of neurosensory dysfunction in the future. The objective and subjective evaluation about the altered sensation after nerve injury nerver coincide. The subjective complaint can affect the result of treatment and daily life negatively.