• Title/Summary/Keyword: Number of Teeth

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Effect of cognitive function and oral health status on mastication ability in elderly individuals (노인의 인지기능과 구강건강상태가 저작능력에 미치는 영향)

  • Choi, Ma-I;Noh, Hee-Jin;Han, Sun-Young;Mun, So-Jung
    • Journal of Korean society of Dental Hygiene
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    • v.19 no.1
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    • pp.65-78
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    • 2019
  • Objectives: This study was conducted to characterize the impact of cognitive function and oral health status on mastication in senior citizens, ${\geq}65$ years of age, using senior centers in the city of Wonju, South Korea. Methods: A cross-sectional study consisting of a simple oral examination and survey questionnaires was performed in 154 individuals. General characteristics, subjective masticatory function, objective masticatory function, cognitive function, and oral health status were collected as variables. Correlation and multiple linear regression analyses were conducted. A p-value of <0.05 was considered to be statistically significant. Results: The subjective masticatory function was scored using the 5-point Likert scale. When subjective masticatory function was analyzed in groups according to cognitive function, the mean subjective masticatory function scores were 4.31, 4.09, and 3.29 in the normal group (cognitive score of ${\geq}16$), suspected dementia group (cognitive score of 1215), and mild dementia group (cognitive score of ${\leq}11$), respectively. Thus, subjective masticatory function decreased along with decreasing cognitive function. When cognitive function, subjective masticatory function, and objective masticatory function were compared with indicators of oral health status (number of functional teeth, oral dryness), subjective masticatory function exhibited a significant positive correlation with objective masticatory function (r=0.635, p<0.01), cognitive function (r=0.292, p<0.01), and total number of functional teeth, including prosthetic appliances (dentures) (r=0.305, p<0.01). According to the regression analysis, age, sex, number of functional teeth, and cognitive function affected subjective masticatory function. Conclusions: The results of this study revealed that age, sex, number of functional teeth, and cognitive function affected subjective masticatory function, whereas oral dryness did not. Therefore, dental professionals must consider subjective masticatory function when providing oral care in senior patients with low cognitive function.

A analysis on the Patient's awareness of periodontal diseases (치과에 내원하는 환자들의 치주질환 인식도에 관한 분석)

  • Kim, Young-Im;Heo, Hee-Young
    • 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.

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A Study on the Change of Occlusal Contacts and Lateral Cephalometric Variables after Stabilization Splint Therapy in Temporomandibular Disorders Patients

  • Na, Hyojung;Lee, Jeong-Yun
    • Journal of Oral Medicine and Pain
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    • v.40 no.1
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    • pp.28-34
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    • 2015
  • Purpose: The aim of this study is to assess the relationship between possible occlusal change after stabilization splint therapy and the research diagnostic criteria for temporomandibular disorders (RDC/TMD) Axis I diagnoses and lateral cephalometric variables. Methods: Clinical and radiographic records of 47 TMD patients wearing stablization splint were reviewed. The number of occluding teeth was recorded and lateral cephalogram was taken at pre-treatment and 6-month post-treatment. They were divided into two groups. The control group consists of patients with the unchanged number of occluding teeth throughout 6-month splint therapy (19 females and 4 males), and occlusal-loss group with the number of occluding teeth decreased (19 females and 5 males). The difference of RDC/TMD diagnoses and cephalometric variables were compared between two groups. Results: In the control group, RDC group I, muscle disorders, was 39.1% (9/23), group II, disc displacements, was 17.4% (4/23), group III OA, osteoarthritis/osteoarthrosis, was 73.9% (17/23), and group III pain, arthralgia, was 82.6% (19/23). In the occlusal-loss group, group I was 41.7% (10/24), group II was 41.7% (10/24), group III OA was 70.8% (17/24), and group III pain was 83.3% (20/24). The frequency of RDC groups was not different between two groups, analyzed by binomial logistic regression. Pre-treatment cephalometric variables were not different between two groups. However, articular angle, AB to mandibular plane and ODI decreased and gonial angle increased significantly in the occlusal-loss group, implying clockwise rotation of the mandible, between pre-treatment and 6-month post-treatment, while none of cephalometric variables showed any statistical difference in the control group. Conclusions: Change in the number of occluding teeth was not related to the RDC/TMD diagnoses. Cephalometric values changed only in the occlusal-loss group as a result of mandibular clockwise rotation. None of cephalometric variables before the stabilization splint therapy was statistically different between the control and occlusal loss group.

The Relationship between Health Behaviors and Oral Health Status of Male Workers in small and medium industry (중소기업 남성근로자의 건강행태와 구강건강상태의 관련성)

  • An, In-Sul;Bahk, Seung-Wee;Lee, Kyeong-Soo;Jang, Eun-Jin
    • Journal of Technologic Dentistry
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    • v.34 no.1
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    • pp.25-36
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    • 2012
  • Purpose: The purpose of this study is to investigate the status of oral health behaviors and oral health status, and to analysis the association between health behavior and chronic disease and oral health status of male workers. Methods: The survey used structured self administered questionnaires from September to October in 2009 in Daegu and Gyeongsangbuk-do province, randomize thirty workplace which work more than 50 workers and carry out a survey targeting 30 to 50 age male laborers who work selected workplace. Total of 1,532 replies were analysed. Results: Age, education, monthly income, job was significantly associated with number of toothbrushing, scaling experience, number of missing teeth. Smoking, amount of smoking, frequency of drinking, number of tooth brushing, unmet need and subjective oral health condition, HBP and DM was significantly associated with the number of missing teeth. In logistic regression, age(above 40), monthly income and DM were significant factors on loss of teeth. Conclusion: In conclusion, it is important to provide education on the teeth-brushing and DM management to workers engaged in a small or medium sized workplace with many tooth loss and low educational status, and to recommend a regular scaling as well as to establish policy for creating conditions upon an oral health check-up and a tooth scaling and allow the maintenance of an oral health.

Teeth discoloration during orthodontic treatment

  • Baik, Un-Bong;Kim, Hoon;Chae, Hwa-Sung;Myung, Ji-Yun;Chun, Youn-Sic
    • The korean journal of orthodontics
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    • v.47 no.5
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    • pp.334-339
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    • 2017
  • Objective: Teeth discoloration is a rare orthodontic complication. The aim of this study was to report the clinical progression of discoloration during orthodontic treatment. Methods: Discolored teeth, detected during orthodontic treatment between January 2003 and December 2012 by a single dentist using similar techniques and appliances, were analyzed. Results: The total number of teeth that showed discoloration was 28. Progression of discoloration was evaluated in only 24 teeth that were observed without any treatment. During the observation period, the discoloration "improved" in 8 of the 24 teeth (33.3%) and was "maintained" in 16 (66.6%). The electric pulp test performed at the time of initial detection of discoloration showed 14.3% positivity, which improved to 21.4% at the final follow-up. None of the initial and final follow-up radiographic findings showed any abnormalities. Conclusions: When teeth discoloration is detected during orthodontic treatment, observation as an initial management is recommended over immediate treatments.

Association between bone mineral density and remaining teeth in postmenopausal women (폐경여성의 골밀도와 잔존치아의 관련성)

  • Lee, Kyeong-Soo;Kim, Chang-Suk
    • Journal of Korean society of Dental Hygiene
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    • v.14 no.3
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    • pp.319-326
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    • 2014
  • Objectives : The purpose of the study is to investigate the factors affecting the bone density and the relationship between bone density and remaining teeth by using data from 2007 to 2009 of the 4th Korean National Health and Nutrition Examination Survey(KNHANES). Methods : The subjects were 1,829 postmenopausal women over 50 years old from the data of the 4th KNHANES. Results : The bone density had the significant difference in 'age' and 'level of education' and remaining teeth had the significant difference in age, monthly income and level of education. The bone mineral density and remaining teeth had the significantly different from subjective general health, smoking, drinking, physical activity. The oral health behaviors and remaining teeth had the significantly associated in subjective oral health status, frequency of tooth brushing, use of auxiliary oral hygiene product, and recent oral examination. Conclusions : The number of remaining teeth is below 9.27 compared with the normal group.

Evaluation of prognosis related to compliance with supportive periodontal treatment in patients with chronic periodontitis: a clinical retrospective study

  • Lee, Jong-Bin;Shin, Hye-Jung;Kim, Dae-Yeob;Pang, Eun-Kyoung
    • Journal of Periodontal and Implant Science
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    • v.49 no.2
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    • pp.76-89
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    • 2019
  • Purpose: The purpose of this study was to evaluate the prognostic effect of patient compliance with supportive periodontal treatment (PC-SPT). Chronic periodontitis patients were classified based on their compliance level, and factors affecting PC-SPT and the prognosis of PC-SPT were investigated. Methods: This study selected 206 patients who started SPT after receiving periodontal treatment between 2010 and 2012. Patients who continued SPT through February 2016 were included. The patients were classified according to whether they exhibited complete compliance (100% of visits), excellent compliance (${\geq}70%$ of visits), incomplete compliance (<70% of visits), or non-compliance (only 2 visits). Patient characteristics that could affect PC-SPT, such as age, sex, distance of the clinic from their residence, implantation, and periodontal treatment, were investigated. The number of newly decayed and extracted teeth, alveolar bone level changes around the teeth and implants, and implant removal were examined to evaluate the prognosis of PC-SPT. Results: Sex and the presence of an implant significantly affected PC-SPT. Additionally, the number of newly decayed and extracted teeth and changes in alveolar bone levels around the teeth and implants were significant prognostic factors related to PC-SPT. Conclusions: PC-SPT in chronic periodontitis patients will help maintain periodontal health and prevent further periodontal disease.

A STUDY ON THE ROOT CANAL MORPHOLOGY OF HUMAN MANDIBULAR FIRST MOLAR WITH TRANSPARENT SPECIMENS (투명표본(透明標本)에 의(依)한 하악제1대구치(下顎第1大口臼齒)의 근관형태(根管形態)에 관(關)한 연구(硏究))

  • You, Kun-W.
    • Restorative Dentistry and Endodontics
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    • v.3 no.1
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    • pp.7-11
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    • 1977
  • One hundred and thirteen human mandibular first molars were injected with china ink, decalcified, cleared and used in study, in vitro, to determine the number of root, the number of root canals, canals per root, frequency and location of transverse anastomoses, frequency and location of lateral canals and frequency of the apical deltas. The results were as follows; 1. Most of the teeth showed three canals, but 21. 25% of the teeth were found to have two canals and 21. 25% of them four canals. 2. In so far as observing two canals per root, 77.0% of teeth were found to have two canals in mesial root and 25.7% of them in distal root. 3. In roots with two canals, the separated apical foramen appeared 59.8% in mesial side and 40.0% in distal side, and the common apical foramen 40.2% in mesial side and 60.0% in distal side. 4. Of the two root canals in one root, 37.3% of the canals were found to have transverse anastomoses and were usually located in the apical third of the root. 5. 25.7% of 113 teeth were found to have lateral canals, and ramifications were mainly located in the apical third of the root.

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Oral health indicators for Korean Elderly (우리나라 노인의 구강건강 주요지표)

  • Jung, Hoi In
    • The Journal of the Korean dental association
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    • v.58 no.1
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    • pp.45-49
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    • 2019
  • Korean society is experiencing a very rapid change in population aging. Oral diseases, including dental caries and periodontal disease, are usually cumulative and make oral health worse with age. Preventing tooth loss through the prevention and treatment of caries and periodontal diseases are essential for retaining oral function later in life. This study aimed to identify the trend in oral health status among elderlies over 65 years old, using major oral health indicators of Health Plan 2020. The fifth, sixth, and seventh Korea National Health and Nutrition Examination Survey (KNHANES V, VI, VII) were used in the present study to estimate the number of remaining natural teeth, the rate of 20 or more natural teeth, the rate of chewing difficulty, and the rate of oral health check-up of elderly. The number of remaining natural teeth increased from 15.6 in 2010 to 17.1 in 2015, and the rate of 20 or more natural teeth also increased from 45.8% in 2010 to 53.7% in 2015. The rate of chewing difficulty was similar but declined a little from 44.3% in 2010 to 42.9% in 2017. Finally, the rate of oral health check-ups of the elderly increased significantly from 12.2% in 2010 to 21.1% in 2017.

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Effect of Mothers' Oral Health Knowledge and Behaviour on Dental Caries in Their Preschool Children (데이터마이닝을 이용한 유치치아우식증 관련요인 분석)

  • Kim, Jin-Soo;Kim, Hyo-Jin;Jorn, Hong-Suk
    • Journal of Korean society of Dental Hygiene
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    • v.5 no.2
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    • pp.171-184
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    • 2005
  • In order to investigate correlation between mother's dental ca re for her children and their dental caries, this study was conducted wi th the dental examination record of 365 children who showed the same number of questionnaires with those examined for dental conditions and questionnaires written by mothers among children between three and six years of age and their mothers in Yeoncheon, Gyeonggi province in June 2004 to estimate frequency and percentage of general properties of subjects and mother's oral health care behaviors for her children by research items, to carry out cross-tabulation analysis and correlation analysis following Chi-square distribution for the presence of dental caries in deciduous teeth and oral health care behaviors, and to use decision tree analysis among data mining techniques for those factors associated with the presence of dental caries in deciduous teeth, and drew the following conclusions. 1. For mother's oral health care behaviors and attitudes for her children, 225 mothers(61.6%) confirmed their children's teeth-brushing; 278(76.2%) used no fluorine; and 286(78.6%) observed their children's teeth, 322 mothers(88.2%) instructed their children in teeth-brushing while 268 (73.4%) provided dental care, 232 mothers(63.7%) treated their children's cavity; 290(79.4%) believed that their children had good dental conditions; and 294(80.5%) answered that they began to provide their children with dental care in deciduous teeth. 2. As for the presence of dental caries in deciduous teeth and dental health care behaviors, there were statistically significant differences in employment, confirmation after teeth-brushing, teeth observation, instruction in time for teeth-brushing, use of fluorine, cavity treatment, time for dental care, and perception of dental conditions(p<0.05). 3. As for correlation between dental caries in deciduous teeth and oral health care behaviors, mothers who worked, who believed that their children didn't have good dental condition, and who thought that it was necessary to begin to provide dental care in permanent teeth were found to get their children to suffer from dental caries in deciduous teeth. Besides, those who failed to confirm teeth-brushing, who used no fluorine, and who failed to observe teeth and gave no instruction in time for teeth-brushing were shown to get their children to suffer from dental caries in deciduous teeth. 4. Variables to determine the presence of dental caries in deciduous teeth were classified by cavity treatment, mother's employment, time for dental care, and observation of children's teeth. The first node to determine the presence of dental caries in deciduous teeth was found to be cavity treatment; the next criteria for classification after cavity treatment were shown to be mother's employment and time for dental care. In case of children with no cavity, they were found to be mother's employment and teeth observation.

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