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Zhang YQ, Zong XN, Wu HH, Li H. Secular changes in eruption of primary teeth in Chinese infants and young children from three national cross-sectional surveys. Sci Rep 2024; 14:8155. [PMID: 38589568 PMCID: PMC11002017 DOI: 10.1038/s41598-024-59044-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2024] [Accepted: 04/05/2024] [Indexed: 04/10/2024] Open
Abstract
The eruption of primary teeth is a basic event during physical development of children, which is affected by heredity and environment. This study aimed to analyze the changes in primary teeth eruption among Chinese children with social development. A total of 249,264 healthy children under 2 years were extracted from the 1995, 2005, and 2015 National Survey on the Physical Growth and Development of Children in Nine Cities of China. Their primary teeth were examined and percentiles of primary teeth eruption age were calculated by probit analysis. The median primary teeth eruption age were 6.8 months, 6.7 months, 6.6 months in 1995, 2005 and 2015. Primary teeth eruption age of boys was 0.2 months, 0.3 months, 0.3 months earlier than that of girls in 1995, 2005 and 2015. Primary teeth eruption age was the earliest in children from northern region and was the latest in children from southern region, and this regional difference did not change over time. These findings suggest that primary teeth eruption age slightly advanced with social development, and their gender difference and regional difference have always existed, which supplied some data for understanding the secular trend of primary teeth development in stomatology, pediatrics, anthropology, and other related fields.
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Affiliation(s)
- Ya-Qin Zhang
- Department of Growth and Development, Capital Institute of Pediatrics, Beijing, 100020, China
| | - Xin-Nan Zong
- Department of Growth and Development, Capital Institute of Pediatrics, Beijing, 100020, China
| | - Hua-Hong Wu
- Department of Growth and Development, Capital Institute of Pediatrics, Beijing, 100020, China
| | - Hui Li
- Department of Growth and Development, Capital Institute of Pediatrics, Beijing, 100020, China.
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Birant S, Veznikli M, Kasimoglu Y, Koruyucu M, Evren AA, Seymen F. Path Analysis of the Relationships between the Eruption Time of the First Primary Teeth and Various Factors in Twins. CHILDREN (BASEL, SWITZERLAND) 2023; 10:children10040683. [PMID: 37189932 DOI: 10.3390/children10040683] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/09/2023] [Revised: 03/28/2023] [Accepted: 03/31/2023] [Indexed: 05/17/2023]
Abstract
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.
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Affiliation(s)
- Sinem Birant
- Department of Pedodontics, Faculty of Dentistry, Istanbul University-Cerrahpasa, Istanbul 34098, Turkey
| | - Mert Veznikli
- Department of Statistics, Faculty of Science and Arts, Yildiz Technical University, Istanbul 34220, Turkey
| | - Yelda Kasimoglu
- Department of Pedodontics, Faculty of Dentistry, Istanbul University, Istanbul 34452, Turkey
| | - Mine Koruyucu
- Department of Pedodontics, Faculty of Dentistry, Istanbul University, Istanbul 34452, Turkey
| | - Atıf Ahmet Evren
- Department of Statistics, Faculty of Science and Arts, Yildiz Technical University, Istanbul 34220, Turkey
| | - Figen Seymen
- Department of Pedodontics, Faculty of Dentistry, Altinbas University, Istanbul 34218, Turkey
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Eruption Timing and Sequence of Primary Teeth in a Sample of Romanian Children. Diagnostics (Basel) 2022; 12:diagnostics12030606. [PMID: 35328159 PMCID: PMC8947037 DOI: 10.3390/diagnostics12030606] [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: 12/02/2021] [Revised: 02/22/2022] [Accepted: 02/23/2022] [Indexed: 11/17/2022] Open
Abstract
Teething is considered a significant event in the growth and development of the child by parents and especially by paediatric dentists and forensic scientists. They constantly need an “up-to-date mirror” of its variability for different geographic regions. The aims of the current study were to determine the timing and sequence of primary tooth emergence, and to establish a correlation between tooth eruption and general growth and external parameters in a sample of Romanian children. This study included 70 healthy children (53% girls and 47% boys), and the analysed data resulted from the questionnaires completed by parents during the whole process. General and specific data on primary teeth eruption were obtained. The differences between sexes were insignificant, except for the maxillary and mandibular canines (p = 0.047 and p = 0.018) and lower temporary second molars (p < 0.001), which were significantly increased in boys. The differences found between the two hemiarches were insignificant (p = 0.197). The mean age of eruption of the first tooth erupted was 7.07 ± 1.990 months. The unpaired t-test was used for comparison of the timings of eruption of the first primary teeth, according to the number of previous births and type of diet, and it was insignificant (p = 0.665 and p = 0.983 respectively).
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Karagic N, Meyer A, Hulsey CD. Phenotypic Plasticity in Vertebrate Dentitions. Integr Comp Biol 2021; 60:608-618. [PMID: 32544244 DOI: 10.1093/icb/icaa077] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Vertebrates interact directly with food items through their dentition, and these interactions with trophic resources could often feedback to influence tooth structure. Although dentitions are often considered to be a fixed phenotype, there is the potential for environmentally induced phenotypic plasticity in teeth to extensively influence their diversity. Here, we review the literature concerning phenotypic plasticity of vertebrate teeth. Even though only a few taxonomically disparate studies have focused on phenotypic plasticity in teeth, there are a number of ways teeth can change their size, shape, or patterns of replacement as a response to the environment. Elucidating the underlying physiological, developmental, and genetic mechanisms that generate phenotypic plasticity can clarify its potential role in the evolution of dental phenotypes.
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Affiliation(s)
- Nidal Karagic
- Department for Zoology and Evolutionary Biology, University of Konstanz, Universitätsstraße 10, Konstanz, 78467, Germany
| | - Axel Meyer
- Department for Zoology and Evolutionary Biology, University of Konstanz, Universitätsstraße 10, Konstanz, 78467, Germany
| | - C Darrin Hulsey
- Department for Zoology and Evolutionary Biology, University of Konstanz, Universitätsstraße 10, Konstanz, 78467, Germany
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Comparison of Serum Vitamin D and Calcium Levels Between Children with Longer Than Normal Eruption Time of First Deciduous Tooth and Control Group. JOURNAL OF RESEARCH IN DENTAL AND MAXILLOFACIAL SCIENCES 2021. [DOI: 10.52547/jrdms.6.3.25] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
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Mennella JA, Reiter A, Brewer B, Pohlig RT, Stallings VA, Trabulsi JC. Early Weight Gain Forecasts Accelerated Eruption of Deciduous Teeth and Later Overweight Status during the First Year. J Pediatr 2020; 225:174-181.e2. [PMID: 32553836 PMCID: PMC7529945 DOI: 10.1016/j.jpeds.2020.06.019] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/03/2020] [Revised: 06/02/2020] [Accepted: 06/05/2020] [Indexed: 01/01/2023]
Abstract
OBJECTIVES To determine whether early diet and weight gain velocity have independent or interactive effects on deciduous teeth emergence and overweight status during the first year. STUDY DESIGN Monthly measures of anthropometry and teeth eruption were collected during a 1-year trial (0.5-12.5 months) on formula-fed infants in which the type of randomized infant formula (cow milk or extensively hydrolyzed protein) diet significantly affected early (0.5-4.5 months) weight gain velocity. Generalized linear mixed models determined whether early diet and weight gain velocity had independent or interactive effects on timing and pattern of teeth eruption. Data from a trial on breastfed infants were used to explore effects of breast milk vs infant formula diets on teeth eruption and overweight status at 10.5 months. RESULTS Independent of infant formula diet, velocities of weight gain had direct effects on the age of first deciduous tooth (P < .04) and number of erupted teeth over time (P < .002). Greater velocity of weight gain from 0.5 to 4.5 months caused earlier and more frequent eruption of deciduous teeth from 4.5 to 12.5 months. Exploratory follow-up analyses on the breastfed and formula-fed diet groups found early weight gain velocity (P = .001), but not diet or its interaction, had significant effects. Infants in the upper quartile for weight gain velocity had more primary teeth (P = .002), and a greater proportion of them were overweight (P < .001) at 10.5 months. CONCLUSIONS Faster weight gain accretion forecasted accelerated primary teeth eruption and increased percentage of children who were overweight-risk factors for dental caries and obesity. TRIAL REGISTRATION ClinicalTrials.govNCT01700205 [2012-2015] and NCT01667549 [2012-2015].
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Affiliation(s)
| | | | | | | | - Virginia A. Stallings
- Children’s Hospital of Philadelphia, Division of Gastroenterology, Hepatology and Nutrition, Philadelphia, PA
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Ribeiro EC, Lacerda RHW, da Silva LGM, Santiago BM, da Costa CHM, Almeida MSC. An analysis of third molar mineralization in Brazilian patients with cleft lip and palate. Acta Odontol Scand 2020; 78:384-389. [PMID: 32096419 DOI: 10.1080/00016357.2020.1731594] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
Purpose: This study investigated the third molar mineralization in patients with cleft lip and palate.Materials and methods: From a total of 253 digital panoramic radiographs from patients with cleft lip and palate within the age range of 7-21 years, 97 radiographs were selected (cleft group). A control group was formed from same sex individuals, without malformation and chronological age matched within 30 days. The analysis of third molar mineralization was carried out by three calibrated examiners using Demirjian's and Nolla's methods. McNemar and Wilcoxon test for paired samples were used for pairwise comparisons between the groups. The Likelihood Ratio test was used to check for an association between the type of cleft and tooth calcification.Results: In both methods, the mineralization means were smaller in the case group than in the control, with significant differences for all third molars (p < .05). The type of cleft affected dental mineralization. There was no significant difference when comparing the left or right sides, but maxillary molars showed earlier mineralization.Conclusions: A significant delay in third molar mineralization was observed in patients with cleft lip and palate according to Demirjian's and Nolla's methods.
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Affiliation(s)
- Esther Carneiro Ribeiro
- Academic Center for Biological Sciences, School of Dentistry, Federal University of Campina Grande, Patos, Brazil
| | | | | | - Bianca Marques Santiago
- Department of Clinics and Social Dentistry, Federal University of Paraíba, João Pessoa, Brazil
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Paul KS, Stojanowski CM, Hughes TE, Brook AH, Townsend GC. Patterns of heritability across the human diphyodont dental complex: Crown morphology of Australian twins and families. AMERICAN JOURNAL OF PHYSICAL ANTHROPOLOGY 2020; 172:447-461. [DOI: 10.1002/ajpa.24019] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/04/2019] [Revised: 12/31/2019] [Accepted: 01/27/2020] [Indexed: 12/20/2022]
Affiliation(s)
- Kathleen S. Paul
- Department of Anthropology University of Arkansas Fayetteville Arkansas
| | - Christopher M. Stojanowski
- Center for Bioarchaeological Research, School of Human Evolution and Social Change Arizona State University Tempe Arizona
| | - Toby E. Hughes
- Adelaide Dental School University of Adelaide Adelaide South Australia
| | - Alan H. Brook
- Adelaide Dental School University of Adelaide Adelaide South Australia
- Institute of Dental Surgery Queen Mary University of London London UK
| | - Grant C. Townsend
- Adelaide Dental School University of Adelaide Adelaide South Australia
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