Bone age estimation by cervical vertebral dimensions in lateral cephalometry

Varshosaz, Masoud; Ehsani, Sara; Nouri, Mahtab; Tavakoli, Mohammadamin

doi:10.1016/j.pio.2011.09.003

Cited by 14 publications

(10 citation statements)

References 24 publications

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“…Important applications include estimation of age for those who do not know their birth date and the use of age estimation in identification of bodies. Estimation methods include using radiographs to examine epiphysial fusion of long bones, 1 to examine hands and wrists 2 and to examine cervical vertebrae, 3 observing changes in the pubic symphysis, 4 and evaluating fusion of the skull's sutures. 5 …”

Section: Introductionmentioning

confidence: 99%

Accuracy of an equation for estimating age from mandibular third molar development in a Thai population

et al. 2016

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PurposeThis study assessed the accuracy of age estimates produced by a regression equation derived from lower third molar development in a Thai population.Materials and MethodsThe first part of this study relied on measurements taken from panoramic radiographs of 614 Thai patients aged from 9 to 20. The stage of lower left and right third molar development was observed in each radiograph and a modified Gat score was assigned. Linear regression on this data produced the following equation: Y=9.309+1.673 mG+0.303S (Y=age; mG=modified Gat score; S=sex). In the second part of this study, the predictive accuracy of this equation was evaluated using data from a second set of panoramic radiographs (539 Thai subjects, 9 to 24 years old). Each subject's age was estimated using the above equation and compared against age calculated from a provided date of birth. Estimated and known age data were analyzed using the Pearson correlation coefficient and descriptive statistics.ResultsAges estimated from lower left and lower right third molar development stage were significantly correlated with the known ages (r=0.818, 0.808, respectively, P≤0.01). 50% of age estimates in the second part of the study fell within a range of error of ±1 year, while 75% fell within a range of error of ±2 years. The study found that the equation tends to estimate age accurately when individuals are 9 to 20 years of age.ConclusionThe equation can be used for age estimation for Thai populations when the individuals are 9 to 20 years of age.

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Section: Introductionmentioning

confidence: 99%

Accuracy of an equation for estimating age from mandibular third molar development in a Thai population

et al. 2016

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“…They stressed the need for developing a separate formula for males. Varshosaz et al [ 22 ] derived a slightly different formula for the Iranian population.…”

Section: Discussionmentioning

confidence: 99%

“…In the current formula, however, apart from these parameters, the ratio of the posterior height to anteroposterior length and the ratio of the lower border concavity to the middle height were also taken into account. The depth of concavity was not measured by the previous authors [ 19 , 20 , 22 ]. However, Roman et al reported that lower border concavity of cervical vertebrae was the best morphological vertebral parameter to estimate skeletal maturation [ 11 ].…”

Section: Discussionmentioning

confidence: 99%

Development and validation of a formula for objective assessment of cervical vertebral bone age

2020

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Background and aim Determination of skeletal maturity and bone age from cervical vertebrae has been well documented. Most methods described use subjective evaluation of morphological characteristics of cervical vertebrae and may be prone to variability and error. A few objective methods have also been developed, specific for certain populations and genders. The aim of this study was to establish and validate an objective method to determine cervical vertebral bone age from lateral cephalometric radiographs, for Asian South Indian patients of both genders. Methods Ninety boys and 90 girls between 9 and 15 years of age were recruited, and their lateral cephalograms were taken. Using measurements made from the third and fourth cervical vertebrae, a formula to determine cervical vertebral bone age was derived using stepwise regression analysis. To validate the formula, a separate sample of 30 boys and 30 girls was chosen, and hand-wrist radiographs and lateral cephalograms were obtained. Cervical vertebral bone age (CVBA) was determined by applying the formula derived. Bone age was also calculated using the Tanner-Whitehouse 3 method. The bone ages determined by both methods were compared to each other and chronological age, using one-way ANOVA, Tukey’s post hoc analysis, and Pearson’s correlation coefficient. Results The formulae derived in the current study to determine CVBA differed for both genders. No statistically significant difference was found between CVBA, bone age derived by the Tanner-Whitehouse 3 method, and chronological age for both boys (p value = 0.425) and girls (p value = 0.995). A moderate to strong positive correlation was found between CVBA, bone age, and chronological age. Conclusion The formulae derived in this study were validated and are reliable for objectively determining cervical vertebral bone age and skeletal maturation from lateral cephalograms for Asian South Indian patients of both genders.

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“…In dental practice, hand radiography is applied most, as it is reliable and affordable. Alternatively, the maturation of the first cervical vertebrae is evaluated 9 . Furthermore, dental age is evaluated to estimate biological age 3 .…”

Section: Introductionmentioning

confidence: 99%

Age estimation of teenagers from Monterrey (Mexico) by the evaluation of dental mineralization after multi-slice helical computed tomography

Treviño-Tijerina

Valenzuela-Garach

Elizondo-Pereo

et al. 2015

Australian Journal of Forensic Sciences

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Bone age estimation by cervical vertebral dimensions in lateral cephalometry

Cited by 14 publications

References 24 publications

Accuracy of an equation for estimating age from mandibular third molar development in a Thai population

Accuracy of an equation for estimating age from mandibular third molar development in a Thai population

Development and validation of a formula for objective assessment of cervical vertebral bone age

Age estimation of teenagers from Monterrey (Mexico) by the evaluation of dental mineralization after multi-slice helical computed tomography

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