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Breastfeeding and non-nutritive sucking habits as covariates of malocclusion in the primary dentition among Tanzanian children: A cross-sectional study

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Introduction: Studies on the effect of feeding practices and sucking habits on malocclusion traits in the primary dentition of pre-schoolchildren from developing countries are scarce. Purpose: Assessing the association of feeding and sucking habits with malocclusion traits, and the association of malocclusion traits with observed oral functional problems. Methods: It was a cross-sectional survey of children aged 3-5 years residing in Kinondoni and Temeke Districts of Dar es Salaam region in Tanzania. Data was analyzed using Statistical Package for Social Scientists, SPSS version 21.0. Univariate analysis was applied to generate frequencies of different variables. Cross tabulations and Chi-square statistics were used to assess bivariate relationships and multivariate analyses were performed by multiple logistic regression. Results: Most pre-schoolchildren (82.5%) were breastfed for less than two years. A history of non-nutritive sucking habits was reported in 28.1% of the children, mostly in boys than girls (33.6% versus 21.8%, respectively. The current non-nutritive sucking habits were reported in 17.8% of the participants. Overall, malocclusion traits were most significantly seen in children who were breastfed for less than two years, compared with those who were breastfed for two years or more (48.5% versus 27.3%, respectively). The presence of various malocclusion traits was significantly found among most of the children who had a history of non-nutritive sucking habits, compared with those who had never performed the habits (65.9% versus 38.6 %, respectively). In the logistic regression analyses, children who were breastfed for a shorter duration (<2 years), their probability of being found with different traits of malocclusion in the primary dentition was almost three times that for those who were breastfed for a longer duration (≥ two years). Also, children who were not actively performing non-nutritive sucking habits were less likely to have an open bite compared with those who were actively performing non-nutritive sucking habits. An open bite in children was significantly associated with speech problems (p<0.01) and swallowing with tongue thrusting (p=0.000). Conclusion and recommendations: Most of the children who were breastfed for a shorter duration and children who had non-nutritive sucking habits were found with various malocclusion, compared with those who were breastfed for a longer duration and those who had no non-nutritive sucking habits. It is crucial to recommend exclusive breastfeeding for up to 6 months and continuation of breastfeeding practice, possibly for up to 2 years of age due to its nutritional, immunological, and stomato-gnathic system developmental benefits.

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To estimate the prevalence of malocclusion and to examine the effects of breastfeeding and non-nutritive sucking habits on dentition in six-year-old children. A cross-sectional study was carried out nested into a birth cohort conducted in Pelotas, Southern Brazil, in 1999. A sample of 359 children was dentally examined and their mothers interviewed. Anterior open bite and posterior cross bite were recorded using the Foster & Hamilton criteria. Information regarding breastfeeding and non-nutritive sucking habits was collected at birth, in the first, third, sixth and 12th months of life, and at six years of age. Control variables included maternal schooling and child's birthweight, cephalic perimeter, and sex. Data were analyzed by Poisson regression. Prevalence of anterior open bite was 46.2%, and that of posterior cross bite was 18.2%. Non-nutritive sucking habits between 12 months and four years of age and digital sucking at age six years were the main risk factors for anterior open bite. Breastfeeding for less than nine months and regular use of pacifier between age 12 months and four years were risk factors for posterior cross bite. Interaction between duration of breastfeeding and the use of pacifier was identified for posterior cross bite. Given that breastfeeding is a protective factor for other diseases of infancy, our findings indicate that the common risks approach is the most appropriate for the prevention of posterior cross bite in primary or initial mixed dentition.
Article
Objectives To evaluate the association between malocclusion characteristics in the mixed dentition stage, breastfeeding, and past nonnutritive sucking habits in school-age children. Materials and Methods A total of 547 school children in the mixed dentition, in the age range between 7 and 13 years, were evaluated by means of questionnaire and clinical examination. Binomial and multinomial logistic regression models were used to evaluate the associations between breastfeeding and finger and pacifier sucking habits, the malocclusion characteristics of posterior crossbite, and excessive or deficient overjet and overbite. Results Individuals who had nonnutritive sucking habits had 2.16 times greater chance of having anterior open bite (odds ratio [OR] 2.16; 95% confidence interval [CI], 1.07–4.33) and 2.39 times greater chance of having posterior crossbite (OR 2.39; 95% CI, 1.56–5.49). Children who were exclusively breastfed up to at least 6 months of age had a higher frequency of normality for overjet and overbite and the lowest posterior crossbite index. However, in adjusted analysis, breastfeeding showed no association with malocclusion characteristics in the mixed dentition stage. Conclusions Breastfeeding was not associated with the presence of malocclusion in the mixed dentition, whereas past nonnutritive sucking habits were associated with the occurrence of malocclusion.
Article
Objectives To evaluate the relationship between dental malocclusion and speech to understand the etiology of speech sound disorders (SSD) in schoolchildren and to make a correct diagnosis and treatment plan. Materials and Methods Articulation and dental occlusion, oromyofunctional evaluation with orofacial praxis and musculature, resting tongue position, and swallowing pattern were analyzed in 290 schoolchildren between the ages of 4 and 7 years. Statistical tests were considered significant for P < .05. Results A significant association between dental malocclusions (Angle Class II and III, anterior open bite, edge-to-edge bite, overjet and anterior crossbite) and phonetic alterations (P = .008) was observed. Sigmatisms and rhotacisms were the most frequent disorders. Malocclusions also showed a significant association with oral habits and with orofacial praxis and muscle activity. Conclusions The presence of malocclusion can cause imbalances in the functions involved in the stomatognathic system. Awareness of this relationship in young children would help professionals to implement preventive measures for the optimum development of children's oral health.
Article
Objective: The aim of the present study was to identify factors associated with the occurrence of distoclusion among preschool children in southern Brazil. Study Design: A cross-sectional study was carried out with a sample of 1026 children aged two to five years enrolled at public preschools in the city of Canoas, Southern Brazil. Interviews were held with parents/caregivers to acquire demographic, socioeconomic and behavioral data. Six examiners who had undergone a training and calibration exercise performed the oral examinations. Distoclusion was recorded when the cusp of the maxillary canine was in an anterior relation to the distal surface of the mandibular canine during centric occlusion. Statistical analysis involved simple and multivariate Poisson regression with robust variance. Results: The prevalence of distoclusion was 36.5% (375/1026). This condition was more frequent in younger children, those classified as white or brown, those who were breastfed for a shorter period of time, those who used a pacifier and those who were bottle fed. The multivariate analysis demonstrated that the likelihood of exhibiting distoclusion was greater among two-year-olds (P=0.038), three-year-olds (P=0.023), those classified as white (P=0.016), those who used a pacifier (P<0.001) and those who used to use a pacifier (P<0.001). Conclusion: Counseling with regard to the duration of pacifier use could contribute toward reducing the prevalence of distoclusion and its consequences in preschool children.
Article
To determine the breast-feeding pattern of four main ethnic groups (the Han, Uygur, Tibetan and Zhuang) living in rural western China. The study utilized a cross-sectional design. Forty-five counties in ten provinces in western China in 2005. A sample of 11 783 children younger than 36 months old (8960 Han, 1281 Uygur, 792 Tibetan and 750 Zhuang) and their mothers were recruited using a stratified, multistage, cluster random sampling method. The rates of exclusive breast-feeding of children at 6 months of age in the Han, Uygur, Tibetan and Zhuang ethnic groups were 11·6 %, 0·8 %, 4·4 % and 13·8 %, respectively. The rates of any breast-feeding for children at 24 months of age were 8·5 %, 25·7 %, 3·0 % and 4·3 % in the four ethnic groups, respectively. After adjusting for related factors, Zhuang children had a higher odds ratio of exclusive breast-feeding to 6 months compared with Han children, whereas Uygur and Tibetan children had lower odds ratio (Zhuang: OR=1·291; 95 % CI 1·006, 1·657; Uugur: OR=0·062; 95 % CI 0·032, 0·121; Tibetan: OR=0·323; 95 % CI 0·220, 0·475). Uygur children had a lower hazard ratio of discontinued breast-feeding compared with Han children, whereas Tibetan children had a higher hazard ratio (Uygur: HR=0·368; 95 % CI 0·333, 0·408; Tibetan: HR=1·366; 95 % CI 1·244, 1·500). The breast-feeding pattern differed among the Han, Uygur, Tibetan and Zhuang ethnic groups. The results suggest that health education regarding the benefits of breast-feeding is needed in rural western China.
Article
Abstract The prevalence of different malocclusion features was investigated in 500 14-yr-old male Saudi Arabian children, using a modification of the registration method described by Björk. et al. (3). Most of the children were in dental stage DS4 (all permanent teeth anterior to the first molars erupted). Totally 62.4% of the children had one or more malocclusion features related to dentition, occlusion, or space. The treatment need was evaluated according to the guidelines used in the Norwegian Health Service. About 40% were found to need treatment with fixed appliances, and for 33% extraction of permanent teeth would be part of the treatment. Only about 2.5% would benefit from treatment with simple removable appliances.
Article
Several studies have determined the effects of non-nutritive sucking habits on malocclusions, but provided conflicting results. To analyse the influence of infant feeding In the presence of non-nutritive sucking habits in children after the first year of life and to assess the effects of non-nutritive sucking habits on occlusion in mixed dentition. Data were collected by self-reported questionnaire and confirmed by personal interview. Parents of 1451 children (aged 7-11) were asked about their children's infant feeding and non-nutritive sucking habits. A clinical evaluation of dental arches included classification of molar relationship (Angle classification), presence or absence of crossbite and open bite. Children with bottle or complementary feeding showed a higher risk of acquiring non-nutritive sucking habits after the first year of life (P < 0.01). Non-nutritive sucking habits are associated with a greater risk of crossbite, open bite, Class II molar relationship (P < 0.01). Parents should be educated about benefits of the exclusive breast feeding in the first 6 months of age on mixed dentition. The activity of non-nutritive sucking should be diagnosed in a timely manner in order to reduce the development of posterior crossbite, anterior open bite, and Class II molar relationship.
Article
Several organizations consider mother's milk the optimal nutrition source for newborns [AAP, 1998; Gartner et al., 1997; Mohrbacher and Stock, 2002; WHO, 1989]. However, there is little scientific evidence supporting the idea that breastfeeding has a positive influence on the development of the orofacial structures. The study of cases and controls (observational, analytical and retrospective) and lateral teleradiographs of the cranium of 197 patients (106 breast-fed and 91 bottle-fed) were compared. Ricketts, Steiner and McNamara values were used for the cephalometric analysis. Differences between the two groups were analysed by applying the T-test and ANOVA. Statistical significance levels were set at p<0.05. Non-nutritive infantile sucking habits have been compared; differences between the two groups were analysed by applying the Chi-square test. First, the upper incisors were found to be protruded in the bottle-fed group. Second, subjects belonging to the breast-fed group displayed a brachycephalic mandible arch, while those fed with bottle had a dolichocephalic Steiner mandibular plane. Third, both facial depth and distance of the pogonion to the perpendicular nasion presented a certain tendency to a retruded mandibular bone in the bottle-fed group. And fourth, the frequency of use of dummy and thumb suction were greater in the bottle feed group, without statistical significance. In addition to the multiple advantages that mother's milk offers to newborns, breastfeeding also helps correct orofacial development (not only for the incisors position, but also for the vertical and sagittal relations of the mandible with upper maxillary and cranial basis).
Article
Recent increases in breast-feeding in the United States have renewed interest in its associated health effects. In addition to known protective effects related to diarrheal disease in infancy and allergies, breast-feeding may be related to other health and developmental concerns with health cost implications. Data from the Child Health Supplement to the 1981 National Health Interview Survey were analyzed to assess the association between breast-feeding and malocclusion. Increased durations of breast-feeding were associated with a decline in the proportion of children with malocclusion, an association that remains when controlled for known associated variables. Our study adds sufficient strength to the findings in this area that we can recommend that health practitioners inform expectant mothers about this additional benefit of breast-feeding.
Article
The habit of sucking is the first coordinated muscular activity of the infant. There are essentially two forms of sucking: the nutritive form which provides essential nutrients, while non-nutritive sucking insures a feeling of warmth and a sense of security. This review gives a description of the anatomy and physiology of sucking together with the influence of breastfeeding and bottle-feeding (conventional or orthodontic nipples) on the dentofacial structures of the infant. Factors involved in the choice of feeding are also discussed. Children who do not have access to unrestricted breastfeeding or bottle-fed children may satisfy their instinctive sucking urge with a pacifier. This paper presents the different types of pacifiers (conventional or orthodontic) along with the beneficial effects provided by pacifiers. Detrimental effects caused by incorrect use of pacifiers or digit-sucking habits are also summarized. Health professionals should inform expectant mothers about the dentofacial advantages of breastfeeding.
Article
It is estimated that approximately 50 percent of infants at one year of age suck a thumb or finger. The number decreases rapidly by ages four to five years. The average age for spontaneous cessation of the habit is 3.8 years of age. Anterior open bite is the most frequent malocclusion reported with digit sucking. In this study the authors investigated the influence of thumb and finger-sucking in the anterior and posterior sections of the primary dentition in three age-groups: three, four, and five years. The study population included 930 subjects. Data for the non-oral-habit group were compared with the data for the thumb and/ or finger-sucking group. At all ages the frequencies of open-bite and maxillary protrusion for the thumb and finger-sucking group were higher than the non-oral-habit group. The frequencies did not appear age-related. There appeared to be an increased tendency to a permanent malocclusion in children who continued after four years of age.
Article
The purpose of this study was to determine the association between the duration of nutritive and nonnutritive sucking behaviors and various occlusal characteristics in the primary dentition. Sucking behavior data were collected on 372 children followed longitudinally from birth by using periodic questionnaires completed by parents. Study models were obtained from the children at 4 to 5 years of age and assessed for posterior crossbite, anterior open bite, and overjet. Dental arch parameters including arch widths, arch lengths, and arch depths were measured directly from the models. The subjects were grouped according to type of habit (pacifier or digit) and duration of nonnutritive sucking behaviors (less than 12, 12 to 24, 24 to 36, 36 to 48, and more than 48 months). Children with nonnutritive sucking of less than 12 months were further grouped according to the duration of breast-feeding. The dental arch and the occlusal characteristics were then compared among these groups. The results indicated no relationship between duration of breast-feeding during the first year of life and any dental arch or occlusal parameters. The study found that prolonged pacifier habits resulted in changes to the dental arches and the occlusal parameters that were different from the effects of digit sucking. In addition, some changes in the dental arch parameters and occlusal characteristics (eg, prevalence of posterior crossbite and increased amount of overjet) persisted well beyond the cessation of the pacifier or digit habit. Although further study is needed to determine the effects of nonnutritive sucking behavior in the mixed dentition, the results suggest that current recommendations for discontinuing these habits may not be optimal in preventing habit-related malocclusions.
Article
The purposes of the study were to determine prospectively the duration of nonnutritive sucking behaviors of children between 1 and 8 years of age and the effect of persistent habits on selected occlusal characteristics in the late deciduous dentition. Sucking behavior data were initially collected from 797 children who were followed longitudinally from birth; the data came from periodic questionnaires completed by the parents. In addition, study models were obtained for 372 children at 4 to 5 years of age and assessed for posterior crossbite, anterior open bite, and overjet. The subjects were grouped according to the duration and type of habit (pacifier or digit, for less than 12 months or more than 48 months). Children with nonnutritive sucking of less than 12 months were further grouped according to the duration of breast-feeding. The McNemar nonparametric test was used to compare the changes in the incidence and effect of the habits with time. There was a significant (P = .001) decrease in the incidence of pacifier habits between 1 and 5 years of age, from 40% to 1%. There was a significant (P = .01) decrease in the incidence of digit habits between 1 and 4 years of age, from 31% to 12%. Between 4 and 7 years of age, the decrease in the incidence reached a plateau--ie, the decrease continued but at a slower rate. Between 7 and 8 years of age, there was an additional significant (P = .008) decrease in the incidence of digit habits, but 4% of the children were, to various extents, still sucking fingers. Children who had pacifier or digit habits lasting less than 12 months did not have significantly different occlusal characteristics than children who were breast-fed for 6 to 12 months. Prolonged pacifier and digit habits caused significant changes in the occlusal characteristics in the late deciduous dentition, and the effects of pacifier habits were different from those of digit sucking. To intercept the development of crossbites and functional shifts, the developing occlusion should be observed in the deciduous dentition in children with prolonged digit or pacifier habits. The transverse occlusal relationship, particularly in pacifier-sucking children, should be evaluated between 2 and 3 years of age. If there are interfering contacts of the deciduous canines, the parents should be instructed to reduce pacifier-sucking time, and appropriate treatment should be rendered, if required.
Are pacifiers associated with early weaning from breastfeeding?
  • M Benis
Benis, M. (2002). Are pacifiers associated with early weaning from breastfeeding? Advances in Neonatal Care: Official Journal of the National Association of Neonatal Nurses, 2, 259-266. https://doi.org/10.1016/S1536-0903(02)80061-3
Relationship between breastfeeding, bottle-feeding and development of malocclusion Indrė Narbutytė *-postgraduate student Agnė Narbutytė *-student
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  • A Linkevičienė
https://doi.org/https://doi.org/10.1111/j.1365-263X.2010.01092.x Narbutytė, I., Narbutytė, A., & Linkevičienė, L. (2013). Relationship between breastfeeding, bottle-feeding and development of malocclusion Indrė Narbutytė *-postgraduate student Agnė Narbutytė *-student. In Baltic Dental and Maxillofacial Journal (Vol. 15, Issue 3).
Ministry of Planning, economy and empowerment, The United Republic of Tanzania: Regional Profile
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NBS. (2016). Ministry of Planning, economy and empowerment, The United Republic of Tanzania: Regional Profile;