Forensic Age Estimation of Chinese Malaysian Adults by Evaluating Occlusal Tooth Wear Using Modified Kim’s Index

Lu, Chai Kit; Yee, Margaret Chia Soo; Ravi, Spoorthi Banavar; Pandurangappa, Rohit

doi:10.1155/2017/4265753

Cited by 9 publications

(13 citation statements)

References 25 publications

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“…There are several well accepted indices in the literature to measure tooth wear, and to compare different population groups through different indices can lead to wrong conclusions [15]. For example, in Chinese Malaysian and Indian populations, a high correlation was found between tooth wear and age [9,10], similar to that seen in Xingu indigenous populations. Nevertheless, another measurement index was used, in addition to different selection criteria.…”

Section: Plos Onementioning

confidence: 89%

“…Dental wear can be an effective tool for estimating age in different populations [9][10][11]. As dental hard tissues undergo progressive loss due to mechanical and/or chemical wear and are not replaced [12,13], quantifying dental wear to estimate chronological age is valid, especially, after development of the dentition and growth cessation.…”

Section: Introductionmentioning

confidence: 99%

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Tooth wear as an indicator of acculturation process in remote Amazonian populations

et al. 2020

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Riverine populations are typical of the Amazon region that depend on nature for subsistence. These people are considered an intermediate population between the urban and indigenous, the original Amazon habitants. The aim of this cross-sectional study was to evaluate the relationship between tooth wear and age in a remote riverine population from the Amazon, located by the Tucumanduba River (n = 94), and to compare them to previous findings obtained from semi-isolated indigenous (n = 223) and urban populations (n = 40) from the Amazon region, which were examined using the same methodology. Using linear regression, tooth wear explained 54.5% of the variation in the ages of the riverine subjects (p<0.001). This coefficient is midway between those obtained in semi-isolated indigenous populations (65-86%) and urban subjects (12%) living in the Amazon. Our findings suggest that tooth wear, a direct evidence of what an individual ate in the past, may be an indicator of the acculturation process in remote populations.

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Section: Plos Onementioning

confidence: 89%

Section: Introductionmentioning

confidence: 99%

Tooth wear as an indicator of acculturation process in remote Amazonian populations

et al. 2020

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“…Although there are other studies evaluating the relationship between tooth wear and AE similar to our study, our findings should not be compared with other studies since different indexes were used in each. [10][11][12] When the literature is reviewed without any sex discrimination, it is stated that morphometric analyses performed on the skeleton provide quick and accurate results. It has been reported that the accuracy rate is increased by 92% when the skull is present, 95% when the pelvis is present, and 98% when both are present.…”

Section: Discussionmentioning

confidence: 99%

“…[3][4][5][6] Dental AE in adults can be determined from age-related pulp chamber narrowing and occlusal surface abrasions. 1,[7][8][9][10][11][12] It has been stated that tooth development is influenced by sex-linked genes and human permanent tooth structures are sexually dimorphic. For this reason, forensic experts have developed many different techniques to differentiate men from female.…”

Section: Introductionmentioning

confidence: 99%

Usability of first molar teeth measurements for age and sex estimation in cone-beam computed tomography images

Topbas

Okkesim

2021

Mersin Üniversitesi Tıp Fakültesi Lokman Hekim Tıp Tarihi Ve Folklorik Tıp Dergisi

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Aim:The morphological changes in tooth structure due to aging gain importance in the adult period. These age-related changes can be used to determine age and sex. The aim of this study was to determine the usability of first molar tooth measurements obtained by cone beam computed tomography (CBCT) in estimating chronological age and sex in Turkish study group. Materials and methods:Three-dimensional images of 332 patients older than 12 years of age with known chronological age and sex were evaluated by semi-automatic segmentation performed separately by two observers. Pulp volume and tooth volume were measured from maxillary or mandibular molar tooth in each patient. Simple linear regression analysis and discriminant function analysis were performed to estimate age and sex using the measurements. In addition, independent sample t-test was used to compare the measurements according to sex and tooth position.Results: Sex was estimated by maxillary first molar volume ratio in 76.6% of women and 56.3% of men. Age estimation (AE) with pulp/tooth volume ratio (PTVR) gave more effective results in males and maxillary first molars. Conclusions:In this study, it was found that maxillary first molar volume ratio gave more accurate results in males AE and in females' sex estimation (SE).

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“…The studies mainly used the technique employed by Miles (n=5), Brothwell (n=4), Murphy's (n=2), Takei (n=1), Dreier FG (n=1), Li and Ji (n=2), Kim (n=2), Modified Kim's Method (n=3), Smith (n=1), Mockers (n=1) and Pot (n=1). [1][2][3]7,9,[11][12][13][14][15][16][17][18][19][20][21][22][23][24][25][26][27][28] The range of SEE for each study was least to the maximum with "r" values ranging from 0.3 to 0.97. The "r" value was highest in the Chinese population and the least in the urban Brazilian population 1,14 (Table 4).…”

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confidence: 99%

Estimation of Age by Evaluating the Occlusal Tooth Wear in Molars: A Study on Dakshina Kannada Population

Lewis¹,

Sreekumar²,

Natarajan³

et al. 2021

CCIDE

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Purpose: Assessment of teeth to estimate age in the living as well as the dead is well documented in the literature. Though applied in conjunction with other parameters in Gustafson's technique, attrition of teeth solely is an underexplored indicator for age estimation mainly in India. Most of the studies using attrition of teeth have been conducted in bioarchaeology, and in populations where studies are being conducted in forensic contexts, the results are debatable. Thus, the present study aimed to evaluate the accuracy of age estimation using the Average Stage of Attrition (ASA) method by Li and Ji in adults of the Dakshina Kannada region. Materials and Methods: This cross-sectional study assessed the degree of attrition in both maxillary and mandibular first and second molars of 136 adults of Dakshina Kannada origin (age range: 20-70 years) according to the 10 stages given by Li and Ji to derive populationspecific linear regression equations. Results: Univariate analysis of prediction of age with attrition showed a significant association of attrition score with age, stratified by sex, arch as well as in total (p-value <0.001) with a standard error of estimate of 9.231 years. The estimated age was within ±5 years of the actual age in 44.2% of the females and 50.0% of the males. A comparative review of 23 studies done to estimate age from attrition score clinically is documented in the manuscript. Conclusion:The findings of this study suggest that evaluation of tooth wear by the Average Stage of Attrition (ASA) method can be used as a non-invasive means to aid in the determination of age in adults of Dakshina Kannada origin. Although the error increases with age, this method provides a measurable means of seriation into older and younger categories.

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Forensic Age Estimation of Chinese Malaysian Adults by Evaluating Occlusal Tooth Wear Using Modified Kim’s Index

Cited by 9 publications

References 25 publications

Tooth wear as an indicator of acculturation process in remote Amazonian populations

Tooth wear as an indicator of acculturation process in remote Amazonian populations

Usability of first molar teeth measurements for age and sex estimation in cone-beam computed tomography images

Estimation of Age by Evaluating the Occlusal Tooth Wear in Molars: A Study on Dakshina Kannada Population

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