Australian longitudinal study of time and order of eruption of primary teeth

Hitchcock, Nancy E.; Gilmour, A I; Gracey, Michael; Kailis, D. G.

doi:10.1111/j.1600-0528.1984.tb01451.x

Cited by 25 publications

(50 citation statements)

References 6 publications

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“…Further, our findings of earlier eruption of second molars in the mandible and the tendency of canines and first molars to be chronologically advanced in the maxilla is in agreement with many authors (3,4,12). Indian children experienced delayed eruption of primary teeth when compared to their counterparts in other populations.…”

Section: Discussionsupporting

confidence: 93%

“…Furthermore, dental formulas are used to estimate biological age and to track children's growth (10). Longitudinal studies provide information on the ages of eruption of individual teeth, along with their variations (4,5,11,12) unclear in the literature (11). Oziegbe et al (16) suggested genetic and molecular studies to confirm the possible association of earlier emergence times of primary teeth to accelerated growth in boys during the first trimester.…”

Section: Discussionmentioning

confidence: 99%

“…Paediatricians' opinion regarding the timing of eruption of primary teeth is often sought by the parents. Primary teeth have shown wide variations in their eruption pattern and time as well between different population, ethnic and racial groups (2)(3)(4)(5). Other suggested factors which affect the eruption time may include gestational period (6), diseases (7), nutritional status and growth (8).…”

Section: Introductionmentioning

confidence: 99%

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Longitudinal study of age and order of eruption of primary teeth in Indian children

John¹

2010

J Clin Exp Dent

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Objective: To determine the chronological eruption parameters of primary teeth in Indian children. Study Design: A longitudinal study consisting of 135 healthy children (74 boys and 61 girls) attending three child health centres in the city of Hyderabad, India were randomly selected and followed from the emergence of the first to the last tooth. Ages and order of tooth eruption were studied for both genders. Results: Boys showed tendency towards earlier eruption for all teeth except maxillary second molar and maxillary/mandibular first molars which erupted earlier in girls. Comparison between maxillary and mandibular showed a tendency to earlier mandibular eruption of central incisors, lateral incisors and second molars in both genders. Conclusions: Within the limitations of this study, a baseline data and chronological table for eruption of primary teeth among Indian children has been established. Indian children experienced delayed eruption of primary teeth when compared to their counterparts in other populations.

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Section: Discussionsupporting

confidence: 93%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Longitudinal study of age and order of eruption of primary teeth in Indian children

John¹

2010

J Clin Exp Dent

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“…Several of the results presented here suggest that this also applies to modern human deciduous teeth. First, clinical longitudinal studies of living children (Lysell et al, 1962;Roche et al, 1964;Hitchcock et al, 1984;Holman and Yamaguchi, 2005;Folayan et al, 2007;Woodroffe et al, 2010) report the mean deciduous eruption (emergence through the gingiva) sequence for mandibular and maxillary teeth: di1, di2, dm1, dc1, and dm2. This eruption sequence is the same as the mandibular enamel initiation sequence reported here (Fig.…”

Section: Retzius Line Periodicitymentioning

confidence: 99%

Incremental enamel development in modern human deciduous anterior teeth

Mahoney

2012

American J Phys Anthropol

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This study reconstructs incremental enamel development for a sample of modern human deciduous mandibular (n = 42) and maxillary (n = 42) anterior (incisors and canines) teeth. Results are compared between anterior teeth, and with previous research for deciduous molars (Mahoney: Am J Phys Anthropol 144 (2011) 204-214) to identify developmental differences along the tooth row. Two hypotheses are tested: Retzius line periodicity will remain constant in teeth from the same jaw and range from 6 to 12 days among individuals, as in human permanent teeth; daily enamel secretion rates (DSRs) will not vary between deciduous teeth, as in some human permanent tooth types. A further aim is to search for links between deciduous incremental enamel development and the previously reported eruptionsequence. Retzius line periodicity in anterior teeth ranged between 5 and 6 days, but did not differ between an incisor and molar of one individual. Intradian line periodicity was 12 h. Mean cuspal DSRs varied slightly between equivalent regions along the tooth row. Mandibular incisors initiated enamel formation first, had the fastest mean DSRs, the greatest prenatal formation time, and based upon prior studies are the first deciduous tooth to erupt. Relatively rapid development in mandibular incisors in advance of early eruption may explain some of the variation in DSRs along the tooth row that cannot be explained by birth. Links between DSRs, enamel initiation times, and the deciduous eruption sequence are proposed. Anterior crown formation times presented here can contribute toward human infant age-at-death estimates. Regression equations for reconstructing formation time in worn incisors are given.

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“…Mean emergence times in our twin cohort were two months later, on average, than those reported by Hitchcock et al (1984) for healthy Australian singletons, but the order of mean emergence times for the different teeth was as expected.…”

Section: Discussionmentioning

confidence: 55%

Genetic Modeling of Primary Tooth Emergence: A Study of Australian Twins

Bockmann¹,

Hughes

Townsend

2010

Twin Res Hum Genet

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T he aim of this study was to quantify contributions of genetic and environmental factors to variation in timing of emergence of the primary teeth in a sample of monozygotic and dizygotic twins, using univariate model-fitting approaches. The sample comprised 94 pairs of monozygotic twins and 125 pairs of dizygous twins, all of European ancestry, aged from 2-6 years. Tooth emergence timing was based on parental report, with a subset of data validated by clinical assessment. Heritability estimates for tooth emergence timing were generally high, around 90%, however estimates for the lower right lateral incisor and the lower canines were around 50%. These findings confirm a strong genetic influence on observed variation in the timing of emergence of the human primary teeth.

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Australian longitudinal study of time and order of eruption of primary teeth

Cited by 25 publications

References 6 publications

Longitudinal study of age and order of eruption of primary teeth in Indian children

Longitudinal study of age and order of eruption of primary teeth in Indian children

Incremental enamel development in modern human deciduous anterior teeth

Genetic Modeling of Primary Tooth Emergence: A Study of Australian Twins

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