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The purpose of this study was to examine physical, mental and social factors affecting the subjective oral health status of people losing teeth in an effort to explore the relationship between their subjective oral health state and the quality of life related to oral health. The subjects in this study were 178 people who visited seven dental clinics located in seven different districts in Seoul to receive treatment after losing one or more teeth. After the purpose of the study was explained, those who agreed to be surveyed were asked to fill out self- administered questionnaires. The questionnaires dealt with the general characteristics of the subjects, subjective oral health status and the quality of life related to oral health. One item each was allocated to general characteristics involving gender, age, marital status, occupation, gross income, drinking and smoking and to subjective oral health status. As for the quality of life related to oral health, a simplified Korean version of oral health inventory was utilized, which employed a five-point Likert scale that provided five different levels of affirmative and negative answer choices. Regarding subjective oral health status, 48.3 percent of the people who lost one or more teeth found themselves not to be in good health. 1. There were significant differences in subjective oral health state according to marital status and smoking. Age and marital status made significant differences to the quality of life related to oral health. 2. Among demographic characteristics, marital status and smoking made significant differences to subjective oral health status, and the quality of life related to oral health significantly varied with age and marital status. 3. As a result of investigating the subfactors of the quality of life related to oral health, there were significant gaps in physical pain, mental difficulties, waning physical function, faltering mental ability, declining social skills and social disadvantage. 4. A worse subjective oral health status led to the lower quality of life linked to oral health, and the former made a statistically significant difference to the latter. 5. The number of lost tooth made no statistically significant differences to OHIP-14.

As the process of going with habituation of the necessary living attitude in order to promote oral health in research subjects, the necessity for incremental oral health care is being emphasized gradually. Accordingly, aiming at a change in the living attitude toward oral health care through sustainable intensification of incremental oral health care, it compared between before and after incremental oral health care in oral hygiene performance (dental plaque control), oral health knowledge, subjective oral health recognition, and oral health behavior, from August in 2009 to December targeting 47 children in 3 places of community child care centers in Dongjak-gu. Thus, the following conclusions were obtained. 1. Research subjects' general characteristics included 34.0%, respectively for O center and S center, 32.0% for N center, 36.2% for boy students, 63.8% for girl students, 31.9% for lower graders (1~3th grade) and 68.1% for higher graders (4~6th grade). Oral health status included 61.7% for DMF rate, 35.1% for missed Dental Caries, and 1.6 piece for DMFT index averagely per 1 person. 2. As for comparison of oral health knowledge between before and after incremental oral health care in research subjects, the significant difference was indicated in all by institution, by school year, and by gender. In the item related to dental plaque and fluorine, a change in correct-answer rate was indicated to be high. The significant difference was shown. 3. As for subjective oral health recognition before and after incremental oral health care in research subjects, the significant difference was indicated in all by institution, by school year, and by gender. They are seen to have recovered self-confidence in their oral health through incremental oral health care. 4. As a result of comparing the oral health living practice between before and after incremental oral health care, all were indicated to have significant difference with toothbrushing frequency in 1.6~2.9 times, toothbrushing time in 1.5~2.7 minutes, and snack frequency in 2.7~1.9 times. The oral hygiene performance was reduced to 26.9 from 54.0. The significant difference was shown. 5. A reason for research subjects’s no toothbrushing at community child care centers was indicated in order of ‘due to being troublesome to take toothbrush and toothpaste’ with 44.7%, and ‘because friends don't perform (due to disliking to brush teeth just alone)’ with 34.0%, prior to incremental oral health care. The significant difference was shown in the higher graders compared to the lower graders. As for an attempt of improving environment such as securing toothbrushing time at community child care centers through incremental oral health care, there wasn’t significant difference after incremental oral health care. However, a reason for no toothbrushing was reduced. The response as saying that ‘brushing teeth mostly’ was increased to 40.4.

This study was carried out in order to utilize it as basic data in adults' oral management by grasping influence of life style upon oral health in adolescent students and by removing risk factors in continuous oral-health management of adults, who make independent life alone. The subjects in this study were 465 adolescent students in Seoul and Gyeonggi-do on whom a self-administered survey was conducted. The findings of the study were as follows: 1. Among oral health care methods, the toothbrushing method was surveyed to be 39.4% for turning a wrist in teeth and gum. The toothbrushing frequency was surveyed to be 44.7% for 3 times a day. Regular checkup was surveyed to be 78.3% for not receiving it. 2. Out of attitudes toward oral health, the average score as saying that oral health is important was 3.91 points. The evaluation on own oral condition was averagely 3.14 points. The necessity for scaling was 3.58 points. The effect of oral examination was 3.96 points. 3. As for oral health knowledge, the respondents who know all of 5 preventive methods accounted for 6.9%. The respondents who know 4 kinds accounted for 8.6%. As for periodontal disease symptom, the respondents who know all of 4 kinds accounted for 12.7%. It was surveyed to be 26.5% for respondents who received oral health education, 92.5% for respondents who say the necessity for oral health education, and 37.6% for respondents as saying of being willing to participate in education. 4. As for regular checkup among oral health care methods according to a living type, 20.2% of students who live at home responded as saying of receiving regular checkup. 12.4% of students who live independently responded as saying of receiving regular checkup. Thus, it was analyzed that there is significant difference between two groups (p<0.05). 5. As a result of analyzing the influence in enforcement of oral health education upon oral health consciousness, the group who received oral health education showed significant difference on items in necessity for scaling (p<0.01) and in effect of oral examination (p<0.01). 6. A coping method given occurrence of a problem within the mouth of a student who lives independently was analyzed to have significant difference in the item of regular checkup (p<0.01).

The purpose of this study was to examine the awareness of dental consumers about implant and their attitude to oral hygiene care in an effort to find out factors affecting the right choice and maintenance of implant. And it's also meant to provide information on individual education programs for the right maintenance and use of implant. The subjects in this study were 437 dental consumers in Seoul and Gyeonggi Province, on whom a self-administered survey was conducted. The findings of the study were as follows: 1. Regarding implant awareness, 87.4 percent of the consumers investigated were cognizant of it. As to an intention of using implant in case of tooth loss, 73.5 percent had an intention to do that. In relation to the route of being aware of it, 30.0 percent knew about that through television or ads. 2. As for awareness of how to take care of implant, 67.3 percent didn't know about that. In regard to the best way for implant care, 51.5 percent viewed regular dental checkup as the best way, and 37.5 percent emphasized the right toothbrushing. 3. Concerning the most important thing for implant surgery, 49.7 percent put stress on the surgical skills of dentists. 4. As to the relationship between demographic characteristics and awareness of implant treatment, there were statistically significant differences in that aspect according to gender (p<0.01) and academic credential (p<0.01). Regarding the relationship between demographic characteristics and awareness of the method of implant care, gender (p<0.01) and age (p<0.01) made a statistically significant difference to that. 5. In relation to outlook on factors affecting implant treatment by gender, the women scored higher than the men. The two groups had significantly different opinions on whether the results of surgery might depend on oral health state (p<0.01), whether implant surgery should be followed by special care (p<0.01), whether scaling would be of use for implant care (p<0.05) and whether the use of oral hygiene supplies would be helpful (p<0.01).

The questionnaire survey was carried out from September 15, 2009 to October 20 targeting women who have experience of childbirth in D region. Thus, the following conclusions were obtained on recognition of oral health. 1. The frequency of toothbrushing a day was the highest in 3 times with 53.0. %, and was indicated to be twice with 24.7%, 4 times with 21.0%, and no toothbrushing with 1.3%. The averagely daily toothbrushing frequency showed statistically significant difference according to age (p<0.05), academic background (p<0.01) and job (p<0.001). 2. The experience of dental treatment during pregnancy was indicated to be the highest in none with 76.7%, and was indicated to be once with 10.0%, twice with 7.7%, and 3 times with 5.7%. The experience of dental treatment during pregnancy showed statistically significant difference according to age (p<0.01), academic background (p<0.001), job (p<0.001) and marriage career (p<0.001). 3. A thought about proper period of dental treatment was indicated to be the highest in the early stage of pregnancy with 41.3% and in the mid-term of pregnancy with 41.3%, and was shown to be the last stage of pregnancy with 17.3%. The proper period of dental treatment showed statistically significant difference according to age (p<0.001), academic background (p<0.001), job (p<0.05) and marriage career (p<0.01). 4. A case of dental treatment during pregnancy was indicated to have influence upon a fetus with 70.0% and to be not so with 30.0%. 5. The opinion about necessity for oral health education for pregnant women was responded to be necessary with 90.0%. The opinion about necessity for oral health education for pregnant women showed statistically significant difference according to academic background (p<0.01) and job (p<0.001).