Background Characteristics and Cognitive Factors as Determinants of Oral Health in Pregnant Women, Tehran, Iran: A Cross-Sectional Study

Objectives: Pregnancy can lead to oral health issues, yet many women remain unaware of the potential negative impact on their pregnancy. This study aimed to assess the dental and periodontal health of pregnant women in Tehran, Iran, and identify its associated factors. Materials and Methods: A cross-sectional study was conducted with 221 pregnant women attending 12 randomly selected public health centers in Tehran, Iran. A self-administered questionnaire gathered data on background characteristics, oral health knowledge, and self-reported health. Periodontal status, oral hygiene, and dental health were assessed using bleeding on probing (BOP), simplified oral health (OHI-S), and decayed-missing-filled teeth (DMFT) indices. Statistical analysis included simple and multiple linear regression (P<0.05). Results: The participants' ages ranged from 18 to 42 years (mean: 27.9 years, SD: 5.5). On average, participants scored 4.1 out of 11 (SD: 1.7) for general oral health knowledge and 1.62 out of 4 (SD: 0.9) for knowledge about oral health during pregnancy. The mean DMFT was 8.28 (SD: 5.7), with 65.6% of women having fair oral hygiene according to the OHI-S. Participants reporting poor general health had more debris (B: 0.276, P=0.043), while those with higher general oral health knowledge had fewer missing teeth (B: -0.183, P=0.048). Conclusion: Despite partial free oral health care provided to pregnant women in Iran, the dental and periodontal conditions of the participants were unsatisfactory. Implementing motivational educational programs within the primary health care system could be instrumental in improving the oral health of pregnant mothers.

Oral Health Literacy and Its Determinants in Young Couples

Objectives: Oral health literacy (OHL) is an interplay of cultural, social and individual factors and plays an effective role in public health promotion. This study aimed to assess OHL and its socioeconomic and demographic determinants among young couples. Materials and Methods: This analytical cross-sectional study was conducted on 828 adults between 15 to 35 years in 2018 in Zanjan city. Data regarding their OHL were collected by using a 17-item Oral Health Literacy-Adult Questionnaire (OHL-AQ) that was filled out by a combination of self-report and interview. OHL was categorized as adequate, marginal, and inadequate. The effects of age and gender as demographic variables, and floor area per person as a proxy of financial status on OHL were also assessed. Data were analyzed using the linear and multinomial logistic regression models. Results: The mean OHL score was 7.86±3.83 out of 17 in equal number of males and females. Only 21% of the couples had adequate OHL. The socioeconomic, but not demographic variables had significant correlations with the qualitative and quantitative variables of OHL even after controlling for the effect of confounders. A correlation was particularly found between inadequate OHL and years of education [odds ratio:6.00; 95% CI: 3.86-9.28); P<0.001]. Conclusion: Socioeconomic factors had independent correlations with inadequate OHL. Participants with higher levels of education, those living in urban areas, and individuals with better financial status had higher levels of OHL and lower odds of inadequate OHL.

The effectiveness of motivational interviewing on the oral health of leukemic children and oral health care knowledge, attitude and practice of their mothers: a hospital-based intervention

BACKGROUND

Some studies suggest a higher effectiveness of motivational interviewing compared to common oral health instruction in healthy individuals. As regards to higher prevalence of dental diseases like early childhood caries, oral mucositis, and gingivitis are reported for leukemic children, the present study aims to compare the effectiveness of educating mothers through MI with the common instruction (CI) for the oral health of children with leukemia under six years old.

METHOD

This quasi-experimental study was designed in Tehran University of Medical Sciences, School of Dentistry and conducted on 61 mothers with leukemic children under age six hospitalized in Mahak Hospital and Rehabilitation Complex which is a Pediatric Cancer Research and Hospital Center, in 2021. Mother and child pairs were allocated to MI or CI (using pamphlets) groups. Data was collected using a questionnaire of mothers' knowledge, attitude, motivation, and practice concerning oral health care in leukemic children. The children underwent clinical examination to assess plaque index before and three months after the intervention. The data were analyzed using SPSS version 25 (IBM, Armonk, NY, USA) by ANCOVA test.

RESULTS

The preschoolers mean ages were 4.23 ± 1.41 and 4.32 ± 1.33 (ranged from 2 to 6 years old) in the MI and CI group, respectively. There were 16 girls (53.3%) and 14 boys (46.7%) in the MI group, and 15 girls (48.4%) and 16 boys (51.6%) in the CI group. Significant differences were observed in the amount of plaque index between the MI group and the CI group (0.20 ± 0.04, p-value < 0.001). A significant increase was observed in the mean of changes in scores of knowledge, attitude, motivation, mother's practice concerning child's oral health, mother's practice concerning personal oral health in the MI group (p-value < 0.001).

CONCLUSIONS

Considering that instruction using MI showed to be effective in improving oral health adherence in mothers and reducing plaque in children with Leukemia, it may be recommended as a promising method to promote the oral health of such susceptible children in places that they are constantly present for treatment.

TRIAL REGISTRATION

The study was registered in the Iranian Registry of Clinical Trials (IRCT) on 11.03.2021 (code: IRCT20131102015238N5).

Impacts of educational interventions on the knowledge of prevention and emergency management of traumatic dental injuries in 11-17-year-old martial arts athletes: a randomized controlled trial

PURPOSE

We compared the effect of an educational pamphlet and a mobile application regarding prevention and emergency management of sport-related traumatic dental injuries (TDIs) on knowledge and self-reported preventive practice of 11-17-year-old Karate and Taekwondo athletes.

METHODS

Participants were invited through an online link published by the Public Relations of the corresponding federations. They completed an anonymous questionnaire consisting of demographics, self-reported experience of TDIs, knowledge of emergency management of TDIs, self-reported preventive practice of TDIs, and the reason for not using mouthguard. The respondents were randomly allocated to pamphlet or mobile application group with the same content. Three months after the intervention, the questionnaire was completed by the athletes again. Repeated measures ANOVA and a linear regression model served for statistical analysis.

RESULTS

In pamphlet group, 51 athletes and in mobile application group 57 athletes completed both baseline and follow-up questionnaires. At baseline, the mean score was 1.98 ± 1.20 and 1.82 ± 1.24 (out of 7) for the knowledge and 3.70 ± 1.64 and 3.33 ± 1.95 (out of 7) for practice in the pamphlet and application group, respectively. In 3-month follow-up, the mean score of knowledge and self-reported practice was significantly higher compared to baseline in both groups (p < 0.001) with no statistically significant difference between the two groups (p = 0.83 and p = 0.58, respectively). Most of the athletes were very satisfied or satisfied with both types of the educational intervention.

CONCLUSION

Both pamphlet and mobile application seem to be useful to improve awareness and practice regarding TDI prevention in adolescent athletes.

Are Iranian graduating dental students prepared to act as future role models of good oral health behaviour? A 10-year study

INTRODUCTION

Dentists by their professional knowledge of prevention have a key role in providing a positive role model for oral health-promoting behaviours. We aimed to investigate the health behaviour of Iranian senior dental students in terms of oral self-care and tobacco use during a 10-year period to assess their preparedness to act as role models for health-promoting behaviours.

MATERIALS AND METHODS

The study was performed in six dental schools selected through stratified cluster random sampling to have a representative sample of all dental schools in Iran. Data were collected in four occasions in 2005, 2008, 2011 and 2015. Senior dental students (N = 1188) were invited to voluntarily complete a self-administered anonymous questionnaire about their oral self-care and tobacco use. Recommended tooth-brushing habit (RTH) was defined as at least twice a day brushing with fluoridated toothpaste. Three separate questions about cigarette, pipe and waterpipe use were applied to assess the students' reported use of tobacco.

RESULTS

The response rate was 81%. Female students reported more frequently RTH than males (p < .001). The reported RTH was more prevalent among nonsmokers. In 2005, 2008, 2011 and 2015, 22.5%, 26%, 28.5% and 24.6% of the students reported smoking, respectively. The trend of reported smoking had the least variation among female students. This was true also for male students regarding RTH.

CONCLUSION

The status and trend of oral self-care and tobacco use among Iranian dental students call for more emphasis on adopting health-promoting behaviours during dental education.

Gender differences in concerns, stress levels and behavior changes in dental academics in Iran during the COVID-19 pandemic: A cross-sectional study

BACKGROUND

Coronavirus disease 2019 (COVID-19) has placed a significant psychological burden on the healthcare personnel. Dental academics play a crucial role in the promotion of public oral health and the education of dental students.

OBJECTIVES

The aim of the study was to assess COVID-19-related concerns, stress and behavior changes in Iranian dental academics, determine the associated factors, and assess the potential gender differences.

MATERIAL AND METHODS

In this cross-sectional study, we shared a researcher-developed questionnaire with Iranian dental academics through social media and e-mail. The questionnaire contained 4 sections: Background (8 items and additional 6 knowledge questions); Concerns (18 items); Stress (based on the 15-item Impact of Event Scale (IES)); and Behavior Change (5 items). We divided the concerns by means of the principal component analysis (PCA) into 3 various components of the fear of infection, concerns over professional responsibilities and concerns over restrictions. The backward stepwise multilevel linear and logistic regression analyses served to discover the association of other factors with stress and behavior changes.

RESULTS

Out of 274 respondents, 66% were female, and 78% were 45 years old or younger. Approximately half of the respondents demonstrated moderate to severe stress and the median (Me) for behavior change was 46.5 out of 50. The greatest concern expressed by the participants referred to the fear of becoming infected by their patients and spreading the virus to their loved ones. Being female, living with parents and not having any administrative role, along with greater fear of infection, concerns over restrictions and academic experience were associated with higher levels of COVID-19-related stress. Being female and having an administrative role, along with greater fear of infection and knowledge, and more daily patient visits were associated with desirable COVID-19-related behavior changes.

CONCLUSIONS

The COVID-19 pandemic has significantly affected dental academics' psychological state, leading to various levels of concern, stress and behavior change. Supportive and educational programs must target those with high fear and stress levels to prevent undesirable behaviors.

Perspectives and Preferences of Preschoolers and Their Parents Regarding Dentist’s Attire and Gender

Objectives: For decades, the white coat has been the uniform of medical professionals. Recently, medical professionals show interest to use alternatives. We aimed to evaluate the perspectives and preferences of children and their parents regarding dentists’ attire and gender. Materials and Methods: This cross-sectional study was performed on 4-to 6-year-olds and their parents referred to dental clinics of Tehran School of Dentistry in 2018. Parents completed a questionnaire on demographics and dental fear, and both parents and children were asked about their preferences regarding the gender of dentist and the color of the dentist’s attire. Statistical analysis was performed by the logistic regression model. Results: Totally, 148 children (mean age of 5.42±0.71 years, 48% girls) and their parents participated in the study. Most of the participants (81.2% of the children and 68.0% of the parents) preferred colored coats compared with white coat. More than half of the parents preferred a female dentist for their children (56.5%) while most children preferred a male dentist (54.8%). Boys preferred a male dentist as well (P=0.01). The children were reluctant to go for a dental visit and preferred to be visited by a dentist of the same gender as themselves (P=0.041). Conclusion: Wearing colored coats by dentists and giving a chance to choose the gender of dentist in polyclinics may increase the children’s cooperation in pediatric settings.

Designing and Evaluation of an Elective Oral Health Course for Fifth-Year Medical Students of Tehran University of Medical Sciences

Objectives: This study aimed to evaluate the effect of an educational intervention on oral health-related knowledge, attitude, and practice of medical students. Materials and Methods: This study was performed on the fifth-year medical students attending an elective oral health course at the Faculty of Dentistry of Tehran University (intervention group) and 25 other students attending another elective course (control group) in 2018. A 2-week internship program including 6 sessions of a workshop program plus 2 days of school field and 2 days of attending dental departments was designed for the intervention group. Before and after the intervention, students completed a questionnaire and their simplified debris index was calculated. Statistical analysis was performed using SPSS version 24 by paired-sample t-test and general linear regression. Results: The mean age of the participants was 24.84±1.31 years in the intervention group and 23.64±1.28 years in the control group. There were 14 (56%) males in the intervention group and 16 (64%) males in the control group. At baseline, the mean knowledge, attitude and practice scores of the control and intervention groups were 26.28, 14.20 and 10.88, and 27.84, 15.80, and 9.36, respectively. After the intervention, the knowledge, attitude, debris index and willingness to adhere to oral health measures significantly improved (P<0.05). Conclusion: Oral health-related knowledge, attitude and practice of medical students were not desirable at baseline. The present study showed that even a short-term intervention in this field was effective to improve the oral health concepts in this group.

Impact of COVID-19 on dental education- a scoping review

BACKGROUND

A new corona virus called COVID-19 and its epidemic has affected health care systems in many ways. There have also been significant changes in dental education. The present study summarizes the findings about dental education resulting from a scoping review of COVID-19 and dentistry.

METHODS

First, a comprehensive search of five databases (Google Scholar, Medline through PubMed, Embase, Scopus, and Cochrane Central) was conducted with the keywords: COVID-19 and its equivalent terms, dentistry, education, oral, students, curriculum, and academics. Articles related to oral health and COVID-19 were searched. Then articles on the subject of dental education were screened and reviewed.

RESULTS

Of the 1389 articles investigating COVID-19 and dentistry, 135 articles were related to dental education and its relationship with COVID-19. The most articles in this field were from the United States, India, and Saudi Arabia. Most of the articles were cross-sectional and then review articles. Based on the review the articles were divided into two main categories of changes and concerns, and opportunities and solutions. Moreover, the following themes were extracted: teaching-learning quality and methods, study career and how students are prepared, infection control policies, theses, exams and assessments, financial and economic security, students and staff's mental health, school's policies and curricula, knowledge of students and staff about COVID-19.

CONCLUSIONS

Dental education now faces big challenges, some of which have never been experienced before. On the other hand, the epidemic has created opportunities for dental education as well. Most of these challenges and opportunities are the same around the world, and the findings of the present study can be a good help to overcome the challenges ahead as well as a good reference to find the right questions to be answered in future studies.

Oral health status of individuals with obsessive-compulsive disorder considering oral hygiene habits

AIMS

This study aimed to evaluate the oral health status of individuals with obsessive-compulsive disorder (OCD).

METHODS

Ninety-two participants, aged 18 years and older from which 46 had OCD symptoms, were included in this comparative cross-sectional study. Data on age, sex, smoking habit, educational level, and potential mediators including brushing frequency (BF) and brushing duration (BD) were collected. Clinical examinations determined outcome measures including decayed-missing-filled teeth (DMFT), presence of root caries (PoRC), gingival recession (GR), plaque index (PI), and papillary bleeding index (PBI). Pathway analysis was used for data analysis.

RESULTS

Individuals with OCD had significantly lower DMFT (p < .01), higher BF (p = .01), and lower PI (p = .01); however, there were no significant differences regarding BD, GR, PBI, and PoRC (p > .05). While BD did not have a mediating role, BF mediated the effect of OCD on DMFT (B = -0.31, CI = -0.60 to -0.06) and PI (B = -0.15, CI = -0.36 to -0.03). Males had less PI (B = -1.03, CI = -1.81 to -0.24) and PBI (B = -1.14, CI = -2.09 to 0.20) than females. Except for OCD and sex, other predictors were not significant.

CONCLUSIONS

Individuals with OCD had lower caries experience and similar gingival health compared to controls. Part of the impact of OCD was mediated through brushing habits.

Effect of Two Educational Interventions Regarding the Management of Traumatic Dental Injuries on Mothers of 8-Year-Old Children

Objectives: This study evaluated the effect of two educational interventions on knowledge and self-reported practice of mothers of 8-year-old children regarding emergency management of traumatic dental injuries (TDIs). Materials and Methods: Six public elementary schools (girls and boys) in Tehran were randomly selected. The mothers of 8-year-old students at each school were randomly assigned to three groups: intervention by poster, intervention by pamphlet, and control. An anonymous valid and reliable questionnaire, including demographics, previous experience on TDIs, mothers’ knowledge, and self-reported practice about emergency management of TDIs was provided to the mothers. After collecting the questionnaires, educational interventions by poster and pamphlet with similar contents regarding step-by-step emergency management of TDIs were performed for the target groups. Three months after the interventions, the same questionnaire was completed by the mothers. The results of pre-test and post-test were compared. Results: Totally, 201 mothers participated in this study. The mean knowledge score significantly increased in the pamphlet group after the intervention, while this change was not significant in the poster and control groups (P>0.05). The mean knowledge score was significantly higher in the pamphlet group than the poster group (P=0.009). The mean self-reported practice score significantly increased after the intervention in both intervention groups (P<0.05) but not in the control group. There was no significant difference in the mean self-reported practice score between the two intervention groups (P>0.05). Conclusion: Both pamphlet and poster were equally effective in improving the self-reported practice of mothers regarding TDIs, which highlights the significance of educating mothers. 

Evaluation of protective factors in caries free preschool children: a case-control study

BACKGROUND

Increasing the proportion of caries-free children following the WHO's global target has led to more desirable welfare and a higher level of quality of life for children. In the present study, we aimed to evaluate the factors contributing to a caries-free condition in preschool children as a basic action towards the global goals of children's oral health.

METHODS

This was a case-control study evaluating the protective factors contributing to dental caries free in 4-6-year-old children in Tehran/Iran in 2017. 500 preschool children and their mothers were selected from 22 randomly selected preschools and were enrolled in the study. The participants were divided into two case (caries-free) and control (with dental caries) groups. The data were collected using two data gathering tools; the child oral examination form and the mother's valid questionnaire. The latter included three domains; socio-demographic factors, behavioral oral health measures, and feeding practices and dietary habits. The criteria for caries detection were cavities in the enamel and dentine. A logistic regression model was applied to identify caries-free protective factors (P < 0.05).

RESULTS

Among 230 caries-free and 270 non-caries-free children who participated in the study, boys were more caries-free (P = 0.001). The protective factors against dental caries that were identified in the study were dental check-up as the cause of dental visit, being the first child in the family, the fewer sessions night feeding of the child's, family's house ownership, and parent's university education (P < 0.05).

CONCLUSIONS

Dental health can be achieved by considering protective factors like the regular dental check-up and socio-economic factors. Communities are invited to pay close attention to these important protective factors as far as they can increase the proportion of caries-free among preschool children especially in countries with developing oral health care systems.

Effect of two educational interventions on primary school teachers' knowledge and self-reported practice regarding emergency management of traumatic dental injuries

BACKGROUND

The present study evaluated the effect of two educational interventions on the knowledge and self-reported practice of primary school teachers regarding emergency management of traumatic dental injuries (TDIs).

METHODS

All primary school teachers (n = 664) of Arak, Iran were asked to participate in the study. Based on geographic regions, all participants were enrolled in two groups: educational leaflet and oral presentation. At baseline, teachers in both groups were asked to complete an anonymous self-administrated questionnaire consisting of demographics, eight questions on knowledge, and four paper cases on self-reported practice about TDIs. After collecting the questionnaires, interventions, including an oral presentation and an educational leaflet whose contents were prepared based on the most recent scientific evidence, were implemented. One and six months after the interventions, the questionnaire was completed by the teachers again. Repeated measures ANOVA and a linear regression model were used for statistical analysis.

RESULTS

Two hundred and ninety-two teachers participated in all stages of the study (response rate = 64.5%). In one-month follow-up, in both groups, the mean score of knowledge was significantly higher compared to baseline and six-month scores (P < 0.001 and P < 0.001, respectively). Moreover, in six-month follow-up, the mean score of knowledge was higher compared to baseline (P < 0.001) in both intervention groups. No statistically significant difference existed in the mean score of knowledge in three evaluations between two groups (P < 0.05). In one-month follow-up, the mean score of self-reported practice was significantly higher compared to baseline and six-month scores in both interventional groups (P < 0.001 and P < 0.001, respectively). There was no significant difference in the mean score of self-reported practice between the one-month and six-month follow-up (P = 0.53). There was no statistical significant difference in the mean score of self-reported practice in three evaluation phases between two groups (P < 0.05). No significant relationship was observed between the difference in knowledge and self-reported practice scores and demographic factors.

CONCLUSIONS

Both educational interventions regarding emergency management of TDIs-educational leaflet and oral presentation- were effective in increasing knowledge and self-reported practice of teachers in the short-term follow-up. In long-term evaluation, educational leaflet resulted in more positive changes in teachers' knowledge compared to their self-reported practice.

Performance of Preschoolers' Mothers and Senior Dental Students After Receiving Training on Fluoride Varnish Administration

OBJECTIVES

Fluoride varnish application is an effective way to prevent caries in children. We aimed to educate preschool children's mothers on how to apply fluoride varnish and compare their performance with dental students and to assess their self-reported competency six months later.

MATERIALS AND METHODS

Eighty-eight 4-6-year-old children presenting to toy houses of six randomly selected health centers in a non-affluent district of Tehran in 2014 were divided into two groups to receive fluoride varnish by their mothers and students. Mothers and senior dental students participated in a session consisting of lecture, discussion, and demonstration of fluoride varnish application for a child. Then, in three centers, mothers and in others, students applied fluoride varnish for preschoolers and their performance was evaluated. Six months later, mothers were asked to apply fluoride varnish again. Mann-Whitney U test, t-test, one-way ANOVA and logistic regression model were used for statistical analyses.

RESULTS

The mean performance score was 9.74±0.22 (out of 10) for mothers and 9.71±0.15 for students (P=0.89). After six months, the mean performance score was 9.58 for mothers, which was not significantly different from that in the first session. The age and educational level of mothers were conversely correlated to their performance (P<0.05). Of mothers, 96% believed that they were competent to repeat fluoride varnish application for their children.

CONCLUSIONS

Mothers' high performance score and the point that the majority of them felt competent to apply varnish for their children casts light on their potential key role in oral health promotion.

Effectiveness of training senior dental students on oral health care for disabled patients

INTRODUCTION

Studies in several countries have shown that dental students need an improved educational programme concerning management of disabled patients. We aimed to study the effect of providing a course entitled 'Oral health care of disabled patients' on knowledge and attitudes of senior dental students at Tehran University.

MATERIALS AND METHODS

A total number of 70 students (n=70) were asked to fill in a questionnaire regarding their background, knowledge and attitudes, before and after the programme. The intervention group of 36 students (n=36) received a four-session course consisting of lectures, group discussion, screening and fluoride varnish provision for disabled patients. Statistical analysis was performed using the Mann-Whitney U-test, the chi-square test and linear regression modelling.

RESULTS

Amongst all the participants, 36% had previously treated a disabled patient and 58% believed that merely specialists should treat disabled patients. Twenty-seven percentage of participants believed that hospital is the only proper facility for treating disabled patients. A considerable improvement in both knowledge and attitudes of students was observed following the intervention (P<0.05).

CONCLUSIONS

Our findings indicate that a short-term training programme on oral health care has an immense impact on students' adherence to treating disabled patients. These results provide evidence to support the necessity of enrichment of the dental curriculum regarding oral health care for disabled patients.

Midwifery students training in oral care of pregnant patients: an interventional study

OBJECTIVE

Midwives may play an important role in oral health promotion of pregnant women, whom they are in close contact with. Our aim was to evaluate an educational intervention on the oral health attitude and practices among the junior midwifery students of Tehran University of Medical Sciences in 2010.

MATERIALS AND METHODS

The junior midwifery students were divided into intervention (n=29) and control (n=33) groups. The intervention group was first educated about general oral health, oral hygiene practices during pregnancy, and tooth brushing and flossing on models. Subsequently, the students performed role playing to ensure they understood the aforementioned lessons correctly. Before and three months after the training course the students filled out a validated self-administered questionnaire and a simplified plaque index was recorded. Statistical analysis was done by Mann-Whitney test and linear regression models.

RESULTS

Before the intervention, the mean scores of attitude in general oral health for the intervention and control groups were 5.8 and 5.4, respectively, which improved to 8.9 and 5.4 after the intervention (P<0.001). The mean score of oral health attitude in pregnancy was 20.4 in the intervention group and increased to 30.9 (P<0.001). The intervention group demonstrated much better oral health practices in pregnancy and lower plaque index score after the intervention.

CONCLUSION

The promising finding about attitude and practice improvement in midwifery students after participating in a short course on oral health promotion in pregnancy shows the necessity to enrich their training program by including this subject.

A cluster randomised trial of effectiveness of educational intervention in primary health care on early childhood caries

Early childhood caries (ECC) remains a serious problem in several developing and developed countries. This cluster randomised trial evaluated the impact of a 6-month educational intervention on ECC. The trial targeted 12- to 15-month-old children (n = 242) and their mothers in Tehran, Iran, visiting 18 public health centres, randomly selected and assigned to two intervention groups and one control group. At baseline, each mother was interviewed and each child underwent a dental examination of all teeth for the number of decayed teeth (dt) and of upper central incisors for the number of teeth with enamel caries (de). All mothers in the two intervention groups (A and B) received oral health instructions from the vaccination staff. In addition, group A received extra reminders. The outcome was defined as increments in the number of teeth with dt or de, as percentages of children developing new dt or de, and as the number needed to treat (NNT). No new de appeared in group A, the mean de increment in group B was 0.2 (SD = 0.6), and in the controls, it was 0.4 (SD = 0.7) (p < 0.05). The percentages of children developing new de were 0, 14, and 26%, respectively. No differences in dt increments were found. Regarding de, NNT for group A was 4 and for B 9; the figures for dt were 13 and 17, respectively. In conclusion, oral health education given to mothers by general health staff is a valuable tool to prevent caries in infants and toddlers.

Feeding habits as determinants of early childhood caries in a population where prolonged breastfeeding is the norm

OBJECTIVES

To investigate the impact of feeding habits and daytime sugar intake on the prevalence of early childhood caries in a population where prolonged breastfeeding is a norm.

METHODS

A cross-sectional study was carried out at 18 of 102 public health centers in Tehran. During a 4-day period at each center, between 20 and 35 children aged 1-3 years were enrolled, resulting in a sample of 504 children. In structured interviews, mothers were asked to give information about their child's feeding habits, daytime sugar intake, and their family's background. Sugar intake during the night was operationalized as separately calculated burdens of nighttime breastfeeding and bottle-feeding. Clinical dental examinations followed the World Health Organization criteria. Data analysis included chi-square test, t-test, ANOVA, and logistic regression modeling.

RESULTS

Of the children, 56% were solely breastfed (mean duration 16.6 months; 95% CI 16.0-17.2), 42% were both breastfed and bottle-fed, and 2% were solely bottle-fed. Mean duration of breastfeeding for the solely breastfed 24- to 36-month olds was 22.8 months (95% CI 21.8-23.9). At bedtime, 69% were breastfed, 11% bottle-fed, and 20% were not fed at all. With respect to feeding during the night, 72% of children were breastfed, 12% were bottle-fed with milk, 1% received a bottle with water, while 15% were not fed. Early childhood caries (ECC) occurred in 3-26% of the children, depending on age group (P < 0.001). The burden of milk-bottle feeding at night was a clear determinant for ECC (OR = 5.5) whereas breastfeeding per se, its duration, the burden of breastfeeding at night, and daytime sugar intake were not.

CONCLUSION

On account of its association with ECC, milk-bottle feeding at night should be limited, whereas prolonged breastfeeding appears to have no such negative dental consequences.