The timing of primary tooth eruption is critical for children’s health planning and the diagnosis of specific growth disorders. The purpose of this study is to assess the relationship between twin pairs’ birth weight, gestational age, and gender, which are indicators of prenatal factors; breast-feeding duration, which is an indicator of postnatal factors; type of delivery, which is an indicator of maternal as well as genetic factors; and age of the primary tooth. Twin children aged from 3 to 15 years who applied to the clinic for the first dental examination constituted the sample group. In this twin study, 59 monozygotic (MZ) twin pairs and 143 dizygotic (DZ) twin pairs were included. Genetic (MZ vs. DZ), maternal (type of delivery, gestational age), perinatal (birth weight, gender), and postnatal (duration of breastfeeding) information was obtained, and effects on the children’s Eruption Timing of the First Primary Tooth (ETFPT) were examined. Statistical analysis was performed using the consistent partial least squares structural equation model (robust PLSc) technique. As birth weight increased, the age at first eruption became younger, but this change was different between MZ and DZ twins (p < 0.05). While the age at first tooth eruption was older in identical twins who were breastfed for the first 6 months, this increase was not observed in DZ twins. The mean of ETFPT was calculated as 7.31 months in MZ twins and 6.75 months in DZ twins. The effect of breastfeeding and birth weight on ETFPT may differ according to zygosity in twins. MZ twins may tend to take longer to experience the eruption of their first primary teeth.

BackgroundPublished information on the teaching and recognition of paediatric dentistry (PD) is limited worldwide.AimThe aim of this study was to investigate the status of current teaching of undergraduate and postgraduate training in PD and identify differences by country‐level economic development.DesignRepresentatives from 80 national member societies of the International Association of Paediatric Dentistry (IAPD) were invited to complete a questionnaire on undergraduate and postgraduate PD curricula, types of postgraduate education offered, and recognition of the specialty. Country economic development level was classified according to the World Bank criteria. The chi‐squared test and the Spearman correlation coefficient were used for data analysis (α = 0.005).ResultsResponse rate was 63%. Teaching of PD at the undergraduate level was present in all countries, but PD specialization, master's, and Doctor of Philosophy (PhD) coursework were offered in 75%, 64%, and 53% of surveyed countries, respectively. Postgraduate specialization courses were offered in a significantly larger proportion of high‐income countries than in upper‐middle‐ or lower‐middle‐income countries (p < .01). In 20% of participating countries, PD was not an officially recognized specialty with no difference in recognition of the specialty by country's economic development level (p = .62).ConclusionPaediatric dentistry is taught at the undergraduate level universally, but at the postgraduate level, significantly fewer courses are available, especially in lower‐income countries.

Aim: The aim of this study is to determine the factors affecting mouth breathing syndrome in children and to evaluate the relationship between these factors. Materials and Methods: In this study, 120 healthy children aged 6-14 years who applied to Istanbul University Faculty of Dentistry, Department of Pedodontics between October 2019 and April 2020, with 60 mouth breathing and 60 nasal breathing. Individuals who agreed to participate in the study were provided with a complete answer to the questionnaire which consist of 20 questions, divided into 4 factors, and their dmf and DMF values were recorded by performing an intraoral examination. Student's t test, Mann Whitney U test and Shapiro Wilks test were used for analyzes Results: The dmf values of children with mouth breathing were significantly higher than those with nasal breathing (p

This study evaluated the influence of socio-demographic, clinical, and parental psychological factors on oral health-related quality of life (OHRQoL) and determined their predictors in preschool-aged children with traumatic dental injury (TDI). The study sample consisted of 324 dyads of children and their parents attending the Clinics of Pediatric Dentistry at Istanbul University. After clinical examination, the Sense of Coherence (SOC), Generalized Self-Efficacy Scale, Early Childhood Oral Health Impact Scale, and Multidimensional Health Locus of Control Scale-MHLC questionnaires were administered to the parents. The statistical analyses included Spearman correlation coefficients, Mann-Whitney U tests, Kruskal-Wallis tests, multiple linear regression, and confirmatory factor analysis. Having mixed TDI, a non-nuclear family, fewer children, and weak parental SOC were important predictors of worse overall OHRQoL and its sections of child and family. Lower internal health locus of control and dental pain due to TDI were predictors of worse overall OHRQoL and child impact, respectively. Consideration of these predictors may help oral health professionals to develop prevention and treatment programs for TDI and oral health literacy programs for families.

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