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Banakar M, Lankarani KB, Vali M, Tabrizi R, Taherifard E, Akbari M. The effect of mass media campaigns on oral health knowledge: A systematic review and meta-analysis. Int J Dent Hyg 2024; 22:15-23. [PMID: 37466282 DOI: 10.1111/idh.12715] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2022] [Revised: 02/25/2023] [Accepted: 06/14/2023] [Indexed: 07/20/2023]
Abstract
OBJECTIVES Knowledge and awareness gained from mass media can prepare people for lifestyle changes and impact their health and well-being. Considering the differences in the results of primary studies, we decided to conduct this study to evaluate the effect of mass media campaigns on oral health knowledge as a systematic meta-analysis and review. METHOD The databases such as the Web of Sciences (ISI), Scopus, PubMed/Medline, and the Cochrane Library were searched systematically until February 2022. Data pooling was performed using a random effects model. The effect sizes were estimated as odds ratios (ORs) with their 95% confidence intervals (CIs). Additional analyses, including sensitivity, subgroup, and publication bias analyses, were also conducted. RESULTS Our meta-analysis comprised a total number of seven articles. The pooled results indicated significant increases in oral health knowledge among included studies (OR = 1.64, 95% CI: 1.20-2.24, p < 0.001). In subgroup analyses, the effects of mass media campaigns on oral health knowledge remained significant for the studies with follow-up of less than 150 weeks (OR = 1.69, 95% CI: 1.49-1.91) and working-age populations (OR = 1.80, 95% CI: 1.40-2.32) compared to other categories. CONCLUSION In general, this study showed that mass media campaigns may have positive effects on oral health knowledge, especially in the working-age population; it seems that for improving health knowledge among children, more initiatives are needed. Besides, the effects of these campaigns seem to be time-dependent and higher in shorter follow-up periods.
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Affiliation(s)
- Morteza Banakar
- Health Policy Research Center, Institute of Health, Shiraz University of Medical Sciences, Shiraz, Iran
- Dental Research Center, Dentistry Research Institute, Tehran University of Medical Sciences, Tehran, Iran
| | - K B Lankarani
- Health Policy Research Center, Institute of Health, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Mohebat Vali
- Student Research Committee, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Reza Tabrizi
- Noncommunicable Diseases Research Center, Fasa University of Medical Sciences, Fasa, Iran
- Clinical Research Development Unit, Valiasr Hospital, Fasa University of Medical Sciences, Fasa, Iran
- USERN office, Fasa University of Medical Sciences, Fasa, Iran
| | - Erfan Taherifard
- Health Policy Research Center, Institute of Health, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Maryam Akbari
- Health Policy Research Center, Institute of Health, Shiraz University of Medical Sciences, Shiraz, Iran
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Goldberg E, Eberhard J, Bauman A, Smith BJ. Mass media campaigns for the promotion of oral health: a scoping review. BMC Oral Health 2022; 22:182. [PMID: 35568896 PMCID: PMC9107752 DOI: 10.1186/s12903-022-02212-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2022] [Accepted: 04/26/2022] [Indexed: 11/29/2022] Open
Abstract
Background Oral diseases are highly prevalent globally and are largely preventable. Individual and group-based education strategies have been dominant in oral health promotion efforts. Population-wide mass media campaigns have a potentially valuable role in improving oral health behaviours and related determinants. This review synthesises evidence from evaluations of these campaigns. Methods A systematic search of major databases was undertaken to identify peer-reviewed articles reporting the evaluation of mass reach (non-interpersonal) communication strategies to address common forms of oral disease (i.e., dental caries, periodontitis, gingivitis). Studies using all types of quantitative design, published in English between 1970 and 2020 were included. Data concerning campaign objectives, content, evaluation methods and findings were extracted. Results Eighteen studies were included from the 499 identified through searching, reporting the findings of 11 campaign evaluations. Two of these used controlled quasi-experimental designs, with the remainder using pre- and post-test (N = 5) or post-test only designs (N = 4). Message recall, as a measure of exposure, was reported in eight campaigns with short-term (≤ 8 weeks) recall ranging from 30 to 97%. Eight studies examined impacts upon oral health knowledge, with four of the five measuring this at baseline and follow-up reporting improvements. From the eight studies measuring oral health behaviours or use of preventative services, six that compared baseline and follow-up reported improvements (N = 2 in children, N = 4 in adults). Conclusion There are relatively few studies reporting the evaluation of mass media campaigns to promote oral health at the population level. Further, there is limited application of best-practice methods in campaign development, implementation and evaluation in this field. The available findings indicate promise in terms of achieving campaign recall and short-term improvements in oral health knowledge and behaviours. Supplementary Information The online version contains supplementary material available at 10.1186/s12903-022-02212-3.
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Affiliation(s)
| | - Joerg Eberhard
- Sydney School of Dentistry, The University of Sydney, Sydney, NSW, 2006, Australia.,Charles Perkins Centre, The University of Sydney, Sydney, NSW, 2006, Australia.,Westmead Applied Research Centre, Westmead Hospital, Westmead, NSW, 2145, Australia
| | - Adrian Bauman
- Charles Perkins Centre, The University of Sydney, Sydney, NSW, 2006, Australia.,Prevention Research Collaboration, Sydney School of Public Health, Lev 6, Charles Perkins Centre (D17), The University of Sydney, Sydney, NSW, 2006, Australia
| | - Ben J Smith
- Charles Perkins Centre, The University of Sydney, Sydney, NSW, 2006, Australia. .,Westmead Applied Research Centre, Westmead Hospital, Westmead, NSW, 2145, Australia. .,Prevention Research Collaboration, Sydney School of Public Health, Lev 6, Charles Perkins Centre (D17), The University of Sydney, Sydney, NSW, 2006, Australia.
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Dumitrescu AL. Editorial: Periodontal Disease - A Public Health Problem. Front Public Health 2016; 3:278. [PMID: 26779473 PMCID: PMC4705816 DOI: 10.3389/fpubh.2015.00278] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2015] [Accepted: 12/09/2015] [Indexed: 01/22/2023] Open
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Azodo CC, Umoh AO. Periodontal Disease Awareness and Knowledge among Nigerian Primary School Teachers. Ann Med Health Sci Res 2015; 5:340-7. [PMID: 26500791 PMCID: PMC4594347 DOI: 10.4103/2141-9248.165257] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Background: Teacher-led oral health education is equally effective in improving the oral health knowledge and oral hygiene status of adolescents as dentist-led and peer-led strategies. Aim: The aim was to determine periodontal disease awareness and knowledge among Nigerian primary school teachers. Subjects and Methods: This cross-sectional study was conducted among primary school teachers in Edo State, Nigeria. A self-administered questionnaire which elicited information on demography, awareness of the periodontal disease and source of information, knowledge of etiology, and symptoms of the periodontal disease, was the data collection tool.. The test of association was done using either Chi-square or Fisher's exact statistics. P value was set at 0.05 for significance level. Results: Out of 180 teachers recruited from seven public primary schools in Benin City, Edo State, Nigeria, 151 of them fully participated by filling the study questionnaires giving a 83.9% (151/180) response rate. The majority 74.2% (112/151) of the participants reported having heard of the periodontal disease and the leading source of information was television. A total of 29.8% (45/151) of participants considered periodontal disease as the main cause of tooth loss among adult Nigerian. Only 12.6% (19/151) of the participants knew dental plaque as soft debris on teeth and 29.1% (44/151) attested that plaque can cause periodontal disease. The majority of the participants were not aware of age 81.5% (123/151) and gender 96.7% (146/151) predisposition to periodontal disease. The perceived manifestations of the periodontal disease reported by were mainly gum bleeding 35.1% (53/151) and swollen gum 20.5% (31/151). A total of 70.2% (106/151) of the participants considered periodontal disease as a preventable disease and about half 49.0% (74/151) of the participants considered daily mouth cleaning as the best preventive method. The majority 95.4% (144/151) of the participants expressed interest in learning about the periodontal disease and the most preferred methods were workshops and lectures. Conclusion: A significant proportion of the participants heard about periodontal disease from nondental clinic sources. There existed a poor awareness of etiology, age and gender predispositions, manifestation, complications, and the preventable nature of periodontal disease among the participants. However, the majority of them indicated interest in learning about periodontal disease which should be utilized in optimizing their knowledge.
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Affiliation(s)
- C C Azodo
- Department of Periodontics, University of Benin, Benin City, Edo State, Nigeria
| | - A O Umoh
- Department of Periodontics, University of Benin, Benin City, Edo State, Nigeria
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Gholami M, Pakdaman A, Montazeri A, Jafari A, Virtanen JI. Assessment of periodontal knowledge following a mass media oral health promotion campaign: a population-based study. BMC Oral Health 2014; 14:31. [PMID: 24708753 PMCID: PMC4234385 DOI: 10.1186/1472-6831-14-31] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2013] [Accepted: 03/21/2014] [Indexed: 12/28/2022] Open
Abstract
Background Oral health promotion can be achieved through education using various approaches including mass media health education campaigns. Mass media campaigns might increase oral health knowledge and perhaps could lead to desired behaviour changes and prevention of oral diseases. The aim of this study was to assess the effect of a national television campaign on knowledge of periodontal health among Iranian adults. Methods We conducted a population-based survey among adults aged 18–50 using a stratified multistage sampling method in the 22 districts of Tehran, Iran, in 2011. All participants were interviewed at two points in time: baseline (before launching the campaign) and follow-up assessment (after the campaign was finished) by using a validated instrument. The campaign included an animation clip about periodontal health and disease that was telecasted for ten days from several national TV channels. The instrument included items related to aetiology and sign of gum disease. Periodontal knowledge score and its change were calculated for each participant and were evaluated using statistical analyses in order to examine the effect of the campaign. Results In all 791 individuals (mean age: 32.6 years) were interviewed at baseline. Of these, 543 individuals were followed one month after the campaign. However, only 163 out of 543 reported that they had seen the campaign. Thus, comparison was made between those who had seen the campaign and who did not. The knowledge scores improved significantly among those who saw the campaign compared to those who did not (the mean knowledge score improvement 0.61 ± 0.96 versus 0.29 ± 0.8 respectively, p < 0.001). The results obtained from multiple logistic regression analysis indicated that improvement in periodontal knowledge was significantly associated with exposure to the campaign (OR = 2.20, 95% CI = 1.37-3.54), female gender (OR = 1.59, 95% CI = 1.05-2.43), being in age group 25–34 (OR = 1.76, 95% CI = 1.00-3.08), having higher education (high school: OR = 2.34, 95% CI = 1.23-4.43; university: OR = 3.33, 95% CI = 1.66-6.64), and baseline knowledge (OR = 0.25, 95% CI = 0.17-0.36). Conclusion The study demonstrated a significant impact of the mass media campaign on Iranian adults’ knowledge regarding periodontal health and disease.
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Affiliation(s)
| | - Afsaneh Pakdaman
- Department of Community Oral Health, School of Dentistry, Tehran University of Medical Sciences, P,O, Box 1439955991 Tehran, Iran.
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Jürgensen N, Petersen PE, Ogawa H, Matsumoto S. Translating science into action: periodontal health through public health approaches. Periodontol 2000 2012; 60:173-87. [DOI: 10.1111/j.1600-0757.2012.00451.x] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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Mårtensson C, Söderfeldt B, Andersson P, Halling A, Renvert S. Factors behind change in knowledge after a mass media campaign targeting periodontitis. Int J Dent Hyg 2006; 4:8-14. [PMID: 16451434 DOI: 10.1111/j.1601-5037.2006.00158.x] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The aim of this study was to investigate changes in knowledge before and after a mass media campaign, in relation to social attributes, care system attributes and oral health aspects. The study was based on a questionnaire in a cohort design, sent out to 900 randomly sampled people aged 50-75 in Sweden. The response rate to the questionnaire before and after the campaign was 70% and 65% respectively. Sixty-four percent answered both questionnaires. Two questions addressed knowledge, while 10 questions aimed to measure social attributes, care system attributes and oral health aspects. Data were analysed for bivariate relations as to change in knowledge and social attributes, care system attributes and oral health aspects. Data were also analysed in multiple regression analysis with knowledge before, knowledge after and knowledge differences as dependent variables. The results showed that there were a number of independent variables with influence on the dependent variables. Of the social attributes, secondary education gave almost 10% (P < 0.001) better knowledge both before and after the campaign. Among care system attributes, high care utilization was related to knowledge both before and after the campaign. The most important factors for knowledge about periodontitis were education, care utilization and perceived importance of oral health. In conclusion, this study demonstrates that mass media might increase knowledge about periodontitis as a health promotion strategy.
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Affiliation(s)
- C Mårtensson
- Department of Health Sciences, Kristianstad University College, Kristianstad, Sweden.
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Abstract
BACKGROUND The mass media frequently cover health related topics, are the leading source of information about important health issues, and are targeted by those who aim to influence the behaviour of health professionals and patients. OBJECTIVES To assess the effects of mass media on the utilisation of health services. SEARCH STRATEGY We searched the Cochrane Effective Practice and Organisation of Care Group specialised register (1996 to 1999), MEDLINE, EMBASE, Eric, PsycLit (to 1999), and reference lists of articles. We hand searched the journals Communication Research (February 1987 to August 1996), European Journal of Communication (1986 to 1994), Journal of Communication (winter 1986 to summer 1996), Communication Theory (February 1991 to August 1996), Critical Studies in Mass Communication (March 1984 to March 1995) and Journalism Quarterly (1986 to summer 1996). SELECTION CRITERIA Randomised trials, controlled clinical trials, controlled before-and-after studies and interrupted time series analyses of mass media interventions. The participants were health care professionals, patients and the general public. DATA COLLECTION AND ANALYSIS Two reviewers independently extracted data and assessed study quality. MAIN RESULTS Twenty studies were included. All used interrupted time series designs. Fifteen evaluated the impact of formal mass media campaigns, and five of media coverage of health-related issues. The overall methodological quality was variable. Six studies did not perform any statistical analysis, and nine used inappropriate statistical tests (ie not taking into account the effect of time trend). All of the studies apart from one concluded that mass media was effective. These positive findings were confirmed by our re-analysis in seven studies. The direction of effect was consistent across studies towards the expected change. REVIEWER'S CONCLUSIONS Despite the limited information about key aspects of mass media interventions and the poor quality of the available primary research there is evidence that these channels of communication may have an important role in influencing the use of health care interventions. Although the findings of this review may be affected by publication bias, those engaged in promoting better uptake of research information in clinical practice should consider mass media as one of the tools that may encourage the use of effective services and discourage those of unproven effectiveness.
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Affiliation(s)
- R Grilli
- Agenzia Sanitaria Regionale, viale Aldo Moro, 38, Bologna, Italy, 40127.
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Brown LF. A comparison of patients attending general dental practices employing or not employing dental hygienists. Aust Dent J 1996; 41:47-52. [PMID: 8639115 DOI: 10.1111/j.1834-7819.1996.tb05655.x] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Previous studies have shown that dental practices employing dental hygienists provide a more periodontally oriented mix of dental services. Little is known about differences in the characteristics of patients who attend these practices, and whether these reflect the orientation of service delivery. In this study, a comparison was made between patients attending private general dental practices employing hygienists and patients attending practices without hygienists in Adelaide, South Australia. A questionnaire was mailed to 2391 patients, and valid responses were received from 632 patients attending 12 practices employing hygienists, and 1052 patients attending 22 practices not employing hygienists. Bivariate analysis of the responses comparing the two groups of patients was conducted using ANOVA for continuous variables and chi-square statistics for categorical variables. A multiple logistic regression model was developed to identify characteristics of patients attending practices with hygienists. Examination of significant (p < 0.05) findings revealed that patients attending practices with hygienists had a higher socio-economic status, had a more preventive pattern of use of services, had better knowledge of periodontally related topics and it was more likely that the dental profession was their main source of information of these topics. These findings indicate that patient profiles do reflect the orientation of service delivery within dental practices and raise the question of whether the dental practice alters the patient's knowledge and behaviour or whether certain patients selectively seek care from practices with hygienists.
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Affiliation(s)
- L F Brown
- School of Dental Science, University of Melbourne
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10
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Affiliation(s)
- B Bakdash
- Department of Preventive Sciences, University of Minnesota School of Dentistry, Minneapolis, USA
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11
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Brown LF. Research in dental health education and health promotion: a review of the literature. HEALTH EDUCATION QUARTERLY 1994; 21:83-102. [PMID: 8188495 DOI: 10.1177/109019819402100109] [Citation(s) in RCA: 88] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
This article presents a review of research in dental health education and health promotion. In the period 1982 to 1992, a total of 57 studies evaluating the effectiveness of interventions to alter individuals' behavior related to dental health were identified. Combining the results of these 57 studies with descriptive articles published over the same period, it appears that dental health education can result in improvements in objective measures of dental health behaviors and actual oral health measures, but has only limited success in changing attitudes towards dental issues and achieves only short-term gains in knowledge. The limited use of theoretical frameworks, poor statistical analyses, the use of convenient samples and the short post-intervention follow-up periods diminish the contribution of this research to the development of dental health policy and the formation of strategies to improve the health of communities.
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Affiliation(s)
- L F Brown
- School of Dental Science, University of Melbourne, Parkville, Victoria, Australia
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Noguerol B, Follana M, Sicilia A, Sanz M. Analysis of oral health information in the Spanish mass media. Community Dent Oral Epidemiol 1992; 20:15-9. [PMID: 1547606 DOI: 10.1111/j.1600-0528.1992.tb00666.x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
The purpose of this study was to evaluate oral health information delivered by the Spanish mass media. The study was composed of two parts. In a quantitative study three media were selected: press, radio, and television. The study was carried out between December 1987 and March 1988, and the media with largest numbers and audience were selected. Information variables were: politics/economy-labor/culture-education/interviews-events-reports/sport s/ leisure/publicity/health/oral health/miscellaneous. The mass media studied dedicated a very small percentage of their space/time to health information, with a clear predominance of other themes such as publicity, politics, and sports (17/1). In relation to oral health, results were even more significant because the space/time dedicated to health in relation to oral health was 180/1 (P less than 0.01). Most of the oral health time was given via promotional or politico-professional issues (P less than 0.05). In a qualitative study all available information relating in any way with oral health was selected from a survey of all written news by the non-specialized Spanish press that appeared during 1 yr (Jan 1987-Jan 1988). Reports dedicated to education were only 170 (31.48%) of the total (540) oral health reports. From 170 reports dedicated to oral health, 33 (19.41%) presented some sort of error and 137 (80.59) had an adequate educative content. Caries was the topic more frequently covered, 77.06% of the data, in contrast to periodontal disease, dealt with by only 33.53%. The qualitative level of data using a Score Level Index (SLI) was 42.73% of the highest possible level. Implications for public health dentistry are discussed.
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Affiliation(s)
- B Noguerol
- Department of Oro-facial Medicine, Faculty of Odontology, University Madrid, Spain
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Bader JD, Rozier RG, McFall WT, Ramsey DL. Association of dental health knowledge with periodontal conditions among regular patients. Community Dent Oral Epidemiol 1990; 18:32-6. [PMID: 2297978 DOI: 10.1111/j.1600-0528.1990.tb00658.x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Although routine patient education concerning periodontal disease is recommended as a means of improving oral health, strong associations between oral health knowledge and plaque or gingival inflammation scores have not been demonstrated. This study examined associations between four knowledge scales (likelihood of keeping teeth, signs of disease, role of diet, role of oral hygiene measures) and six periodontal status measures (plaque, gingivitis, calculus, probing depth, attachment loss, missing teeth) among 1088 regularly attending dental patients. In bivariate correlation analyses, there was a weak, direct association between stronger expectations of keeping teeth and better levels of periodontal health, while an inverse association between knowledge of signs of periodontal disease and better periodontal health was noted. Level of knowledge of the role of oral hygiene or of diet in periodontal disease was not associated with level of disease. When effects associated with age, sex, race, and different dental practices were held constant, these patient knowledge scales did not explain substantial proportions of variance in the periodontal disease measures. Among regular utilizers, the effects of receipt of dental care may be more determinative than level of patient knowledge.
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Affiliation(s)
- J D Bader
- Dept. of Dental Ecology, School of Dentistry, University of North Carolina, Chapel Hill
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Bader JD, Rozier RG, McFall WT, Ramsey DL. Dental patients' knowledge and beliefs about periodontal disease. Community Dent Oral Epidemiol 1989; 17:60-4. [PMID: 2920540 DOI: 10.1111/j.1600-0528.1989.tb00588.x] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
The knowledge and beliefs about periodontal disease of 1093 regularly attending patients in 36 North Carolina general dental practices were examined. Patients had a strong positive orientation toward keeping their teeth. Correct information concerning the signs, causes, prevention, and treatment of periodontal disease was widely held. Older patients were more knowledgeable about treatment and signs of periodontal disease, while younger patients expressed more positive beliefs about keeping their teeth for a lifetime. Although patients' knowledge was not perfect, it included few misperceptions that could threaten oral health. Additional education was most needed with respect to the significance of bleeding gums.
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Affiliation(s)
- J D Bader
- Department of Dental Ecology, School of Dentistry, University of North Carolina, Chapel Hill 27599-7450
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Schou L. Use of mass-media and active involvement in a national dental health campaign in Scotland. Community Dent Oral Epidemiol 1987; 15:14-8. [PMID: 3467888 DOI: 10.1111/j.1600-0528.1987.tb00473.x] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
This paper describes the evaluation of a Dental Health Mass-Media Campaign directed at 5-7-yr-old children and their mothers. It aimed at increasing knowledge and awareness of dental health by making use of three different components: inserts in women's magazines; television commercial; material for home use distributed at schools. In order to study the relative recollection of the three components a representative quota sample of 164 mothers and 164 children were interviewed. The analysis of the results showed a high degree of recollection of the campaign in general. The material for use at home, distinguished from the other two components by demanding an active involvement of the participants, had the largest impact. The television commercial, merely demanding a passive involvement of the participants, was less well remembered, and the magazine insert had the lowest recollection. It is suggested that future national health education campaigns combine the mass-media approach to increase health awareness with active involvement activities to stimulate behavioural changes.
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