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The Tooth and Skin Colour Interrelationship across the Different Ethnic Groups

Identifieur interne : 002D79 ( Pmc/Curation ); précédent : 002D78; suivant : 002D80

The Tooth and Skin Colour Interrelationship across the Different Ethnic Groups

Auteurs : Satheesh B. Haralur [Arabie saoudite] ; Ahmed Mohammed Dibas [Arabie saoudite] ; Nabil Abdullah Almelhi [Arabie saoudite] ; Dhafer Ali Al-Qahtani [Arabie saoudite]

Source :

RBID : PMC:4102016

Abstract

Objectives. The purpose of the study was to investigate the relation between skin and tooth colour parameters in various ethnic groups. Materials and Methods. Saudi Arabian, Indian, African, and East Asian ethnic groups of 75 each were included in the study. The tooth colour was determined by spectrophotometer in CIELAB parameters. The skin colour was measured at earlobe, forehead, and malar locations by clinical skin photography. The data was statistically analysed by one-way ANOVA and correlation tests. Results. The “L” vale for the Saudi Arabian group had a strong correlation at earlobe location (r = 0.275), while correlation was found at forehead (r = 0.271) and malar region (r = 0.261) with Indian ethnic group. A strong negative correlation was observed in African ethnic group at all three locations for “L” parameter. The redness value “a” is found to have strong negative linear correlation between the earlobe and tooth for Saudi Arabian (r = −0.240) and Indian ethnic groups (r = −0.268). The “b” showed no correlation with skin location in all groups except positive correlation in African ethnic groups. Conclusions. The strong correlation was found between the skin and tooth colour parameters; hence the skin colour can be used as a guide for artificial tooth selection in edentulous patients.


Url:
DOI: 10.1155/2014/146028
PubMed: 25101125
PubMed Central: 4102016

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PMC:4102016

Le document en format XML

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<name sortKey="Haralur, Satheesh B" sort="Haralur, Satheesh B" uniqKey="Haralur S" first="Satheesh B." last="Haralur">Satheesh B. Haralur</name>
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<nlm:aff id="I1">Department of Prosthodontics, College of Dentistry, King Khalid University, P.O. Box 3263, Abha 61471, Saudi Arabia</nlm:aff>
<country xml:lang="fr">Arabie saoudite</country>
<wicri:regionArea>Department of Prosthodontics, College of Dentistry, King Khalid University, P.O. Box 3263, Abha 61471</wicri:regionArea>
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<name sortKey="Dibas, Ahmed Mohammed" sort="Dibas, Ahmed Mohammed" uniqKey="Dibas A" first="Ahmed Mohammed" last="Dibas">Ahmed Mohammed Dibas</name>
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<name sortKey="Almelhi, Nabil Abdullah" sort="Almelhi, Nabil Abdullah" uniqKey="Almelhi N" first="Nabil Abdullah" last="Almelhi">Nabil Abdullah Almelhi</name>
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<name sortKey="Al Qahtani, Dhafer Ali" sort="Al Qahtani, Dhafer Ali" uniqKey="Al Qahtani D" first="Dhafer Ali" last="Al-Qahtani">Dhafer Ali Al-Qahtani</name>
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<title xml:lang="en" level="a" type="main">The Tooth and Skin Colour Interrelationship across the Different Ethnic Groups</title>
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<name sortKey="Haralur, Satheesh B" sort="Haralur, Satheesh B" uniqKey="Haralur S" first="Satheesh B." last="Haralur">Satheesh B. Haralur</name>
<affiliation wicri:level="1">
<nlm:aff id="I1">Department of Prosthodontics, College of Dentistry, King Khalid University, P.O. Box 3263, Abha 61471, Saudi Arabia</nlm:aff>
<country xml:lang="fr">Arabie saoudite</country>
<wicri:regionArea>Department of Prosthodontics, College of Dentistry, King Khalid University, P.O. Box 3263, Abha 61471</wicri:regionArea>
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<name sortKey="Dibas, Ahmed Mohammed" sort="Dibas, Ahmed Mohammed" uniqKey="Dibas A" first="Ahmed Mohammed" last="Dibas">Ahmed Mohammed Dibas</name>
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<nlm:aff id="I2">College of Dentistry, King Khalid University, P.O. Box 3263, Abha 61471, Saudi Arabia</nlm:aff>
<country xml:lang="fr">Arabie saoudite</country>
<wicri:regionArea>College of Dentistry, King Khalid University, P.O. Box 3263, Abha 61471</wicri:regionArea>
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<name sortKey="Almelhi, Nabil Abdullah" sort="Almelhi, Nabil Abdullah" uniqKey="Almelhi N" first="Nabil Abdullah" last="Almelhi">Nabil Abdullah Almelhi</name>
<affiliation wicri:level="1">
<nlm:aff id="I2">College of Dentistry, King Khalid University, P.O. Box 3263, Abha 61471, Saudi Arabia</nlm:aff>
<country xml:lang="fr">Arabie saoudite</country>
<wicri:regionArea>College of Dentistry, King Khalid University, P.O. Box 3263, Abha 61471</wicri:regionArea>
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<name sortKey="Al Qahtani, Dhafer Ali" sort="Al Qahtani, Dhafer Ali" uniqKey="Al Qahtani D" first="Dhafer Ali" last="Al-Qahtani">Dhafer Ali Al-Qahtani</name>
<affiliation wicri:level="1">
<nlm:aff id="I2">College of Dentistry, King Khalid University, P.O. Box 3263, Abha 61471, Saudi Arabia</nlm:aff>
<country xml:lang="fr">Arabie saoudite</country>
<wicri:regionArea>College of Dentistry, King Khalid University, P.O. Box 3263, Abha 61471</wicri:regionArea>
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<title level="j">International Journal of Dentistry</title>
<idno type="ISSN">1687-8728</idno>
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<p>
<italic>Objectives</italic>
. The purpose of the study was to investigate the relation between skin and tooth colour parameters in various ethnic groups.
<italic>Materials and Methods</italic>
. Saudi Arabian, Indian, African, and East Asian ethnic groups of 75 each were included in the study. The tooth colour was determined by spectrophotometer in CIELAB parameters. The skin colour was measured at earlobe, forehead, and malar locations by clinical skin photography. The data was statistically analysed by one-way ANOVA and correlation tests.
<italic>Results</italic>
. The “
<italic>L</italic>
” vale for the Saudi Arabian group had a strong correlation at earlobe location (
<italic>r</italic>
= 0.275), while correlation was found at forehead (
<italic>r</italic>
= 0.271) and malar region (
<italic>r</italic>
= 0.261) with Indian ethnic group. A strong negative correlation was observed in African ethnic group at all three locations for “
<italic>L</italic>
” parameter. The redness value “
<italic>a</italic>
” is found to have strong negative linear correlation between the earlobe and tooth for Saudi Arabian (
<italic>r</italic>
= −0.240) and Indian ethnic groups (
<italic>r</italic>
= −0.268). The “
<italic>b</italic>
” showed no correlation with skin location in all groups except positive correlation in African ethnic groups.
<italic>Conclusions</italic>
. The strong correlation was found between the skin and tooth colour parameters; hence the skin colour can be used as a guide for artificial tooth selection in edentulous patients.</p>
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<pmc-dir>properties open_access</pmc-dir>
<front>
<journal-meta>
<journal-id journal-id-type="nlm-ta">Int J Dent</journal-id>
<journal-id journal-id-type="iso-abbrev">Int J Dent</journal-id>
<journal-id journal-id-type="publisher-id">IJD</journal-id>
<journal-title-group>
<journal-title>International Journal of Dentistry</journal-title>
</journal-title-group>
<issn pub-type="ppub">1687-8728</issn>
<issn pub-type="epub">1687-8736</issn>
<publisher>
<publisher-name>Hindawi Publishing Corporation</publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id pub-id-type="pmid">25101125</article-id>
<article-id pub-id-type="pmc">4102016</article-id>
<article-id pub-id-type="doi">10.1155/2014/146028</article-id>
<article-categories>
<subj-group subj-group-type="heading">
<subject>Research Article</subject>
</subj-group>
</article-categories>
<title-group>
<article-title>The Tooth and Skin Colour Interrelationship across the Different Ethnic Groups</article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname>Haralur</surname>
<given-names>Satheesh B.</given-names>
</name>
<xref ref-type="aff" rid="I1">
<sup>1</sup>
</xref>
<xref ref-type="corresp" rid="cor1">*</xref>
</contrib>
<contrib contrib-type="author">
<name>
<surname>Dibas</surname>
<given-names>Ahmed Mohammed</given-names>
</name>
<xref ref-type="aff" rid="I2">
<sup>2</sup>
</xref>
</contrib>
<contrib contrib-type="author">
<name>
<surname>Almelhi</surname>
<given-names>Nabil Abdullah</given-names>
</name>
<xref ref-type="aff" rid="I2">
<sup>2</sup>
</xref>
</contrib>
<contrib contrib-type="author">
<name>
<surname>Al-Qahtani</surname>
<given-names>Dhafer Ali</given-names>
</name>
<xref ref-type="aff" rid="I2">
<sup>2</sup>
</xref>
</contrib>
</contrib-group>
<aff id="I1">
<sup>1</sup>
Department of Prosthodontics, College of Dentistry, King Khalid University, P.O. Box 3263, Abha 61471, Saudi Arabia</aff>
<aff id="I2">
<sup>2</sup>
College of Dentistry, King Khalid University, P.O. Box 3263, Abha 61471, Saudi Arabia</aff>
<author-notes>
<corresp id="cor1">*Satheesh B. Haralur:
<email>hb_satheesh@yahoo.com</email>
</corresp>
<fn fn-type="other">
<p>Academic Editor: Wen-Cheng Chen</p>
</fn>
</author-notes>
<pub-date pub-type="ppub">
<year>2014</year>
</pub-date>
<pub-date pub-type="epub">
<day>1</day>
<month>7</month>
<year>2014</year>
</pub-date>
<volume>2014</volume>
<elocation-id>146028</elocation-id>
<history>
<date date-type="received">
<day>27</day>
<month>4</month>
<year>2014</year>
</date>
<date date-type="rev-recd">
<day>27</day>
<month>5</month>
<year>2014</year>
</date>
<date date-type="accepted">
<day>28</day>
<month>5</month>
<year>2014</year>
</date>
</history>
<permissions>
<copyright-statement>Copyright © 2014 Satheesh B. Haralur et al.</copyright-statement>
<copyright-year>2014</copyright-year>
<license xlink:href="https://creativecommons.org/licenses/by/3.0/">
<license-p>This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.</license-p>
</license>
</permissions>
<abstract>
<p>
<italic>Objectives</italic>
. The purpose of the study was to investigate the relation between skin and tooth colour parameters in various ethnic groups.
<italic>Materials and Methods</italic>
. Saudi Arabian, Indian, African, and East Asian ethnic groups of 75 each were included in the study. The tooth colour was determined by spectrophotometer in CIELAB parameters. The skin colour was measured at earlobe, forehead, and malar locations by clinical skin photography. The data was statistically analysed by one-way ANOVA and correlation tests.
<italic>Results</italic>
. The “
<italic>L</italic>
” vale for the Saudi Arabian group had a strong correlation at earlobe location (
<italic>r</italic>
= 0.275), while correlation was found at forehead (
<italic>r</italic>
= 0.271) and malar region (
<italic>r</italic>
= 0.261) with Indian ethnic group. A strong negative correlation was observed in African ethnic group at all three locations for “
<italic>L</italic>
” parameter. The redness value “
<italic>a</italic>
” is found to have strong negative linear correlation between the earlobe and tooth for Saudi Arabian (
<italic>r</italic>
= −0.240) and Indian ethnic groups (
<italic>r</italic>
= −0.268). The “
<italic>b</italic>
” showed no correlation with skin location in all groups except positive correlation in African ethnic groups.
<italic>Conclusions</italic>
. The strong correlation was found between the skin and tooth colour parameters; hence the skin colour can be used as a guide for artificial tooth selection in edentulous patients.</p>
</abstract>
</article-meta>
</front>
<floats-group>
<table-wrap id="tab1" orientation="portrait" position="float">
<label>Table 1</label>
<caption>
<p>Mean
<italic>L</italic>
,
<italic>a</italic>
, and
<italic>b</italic>
values and standard deviation among all ethnic groups.</p>
</caption>
<table frame="hsides" rules="groups">
<thead>
<tr>
<th align="left" rowspan="2" colspan="1">Group</th>
<th align="center" rowspan="2" colspan="1">Location </th>
<th align="center" colspan="2" rowspan="1">
<italic>L</italic>
value</th>
<th align="center" colspan="2" rowspan="1">
<italic>a</italic>
Value</th>
<th align="center" colspan="2" rowspan="1">
<italic>b</italic>
value</th>
</tr>
<tr>
<th align="center" rowspan="1" colspan="1">Mean</th>
<th align="center" rowspan="1" colspan="1">SD</th>
<th align="center" rowspan="1" colspan="1">Mean</th>
<th align="center" rowspan="1" colspan="1">SD</th>
<th align="center" rowspan="1" colspan="1">Mean</th>
<th align="center" rowspan="1" colspan="1">SD</th>
</tr>
</thead>
<tbody>
<tr>
<td align="left" rowspan="4" colspan="1">Group 1</td>
<td align="center" rowspan="1" colspan="1">Tooth </td>
<td align="center" rowspan="1" colspan="1">79.26</td>
<td align="center" rowspan="1" colspan="1">3.16</td>
<td align="center" rowspan="1" colspan="1">0.853</td>
<td align="center" rowspan="1" colspan="1">0.99</td>
<td align="center" rowspan="1" colspan="1">21.05</td>
<td align="center" rowspan="1" colspan="1">3.84</td>
</tr>
<tr>
<td align="center" rowspan="1" colspan="1">Ear lobe</td>
<td align="center" rowspan="1" colspan="1">44.36</td>
<td align="center" rowspan="1" colspan="1">7.06</td>
<td align="center" rowspan="1" colspan="1">27.46</td>
<td align="center" rowspan="1" colspan="1">4.50</td>
<td align="center" rowspan="1" colspan="1">22.12</td>
<td align="center" rowspan="1" colspan="1">3.9</td>
</tr>
<tr>
<td align="center" rowspan="1" colspan="1">Forehead</td>
<td align="center" rowspan="1" colspan="1">51.77</td>
<td align="center" rowspan="1" colspan="1">6.17</td>
<td align="center" rowspan="1" colspan="1">22.95</td>
<td align="center" rowspan="1" colspan="1">3.25</td>
<td align="center" rowspan="1" colspan="1">25.36</td>
<td align="center" rowspan="1" colspan="1">3.44</td>
</tr>
<tr>
<td align="center" rowspan="1" colspan="1">Malar</td>
<td align="center" rowspan="1" colspan="1">50.96</td>
<td align="center" rowspan="1" colspan="1">6.55</td>
<td align="center" rowspan="1" colspan="1">28.78</td>
<td align="center" rowspan="1" colspan="1">3.19</td>
<td align="center" rowspan="1" colspan="1">24.32</td>
<td align="center" rowspan="1" colspan="1">2.96</td>
</tr>
<tr>
<td align="center" colspan="8" rowspan="1">
<hr></hr>
</td>
</tr>
<tr>
<td align="left" rowspan="4" colspan="1">Group 2</td>
<td align="center" rowspan="1" colspan="1">Tooth </td>
<td align="center" rowspan="1" colspan="1">80.59</td>
<td align="center" rowspan="1" colspan="1">3.23</td>
<td align="center" rowspan="1" colspan="1">0.546</td>
<td align="center" rowspan="1" colspan="1">0.952</td>
<td align="center" rowspan="1" colspan="1">19.57</td>
<td align="center" rowspan="1" colspan="1">4.01</td>
</tr>
<tr>
<td align="center" rowspan="1" colspan="1">Ear lobe</td>
<td align="center" rowspan="1" colspan="1">40.97</td>
<td align="center" rowspan="1" colspan="1">9.27</td>
<td align="center" rowspan="1" colspan="1">29.09</td>
<td align="center" rowspan="1" colspan="1">5.23</td>
<td align="center" rowspan="1" colspan="1">22.05</td>
<td align="center" rowspan="1" colspan="1">4.80</td>
</tr>
<tr>
<td align="center" rowspan="1" colspan="1">Forehead</td>
<td align="center" rowspan="1" colspan="1">45.11</td>
<td align="center" rowspan="1" colspan="1">7.34</td>
<td align="center" rowspan="1" colspan="1">29.72</td>
<td align="center" rowspan="1" colspan="1">5.13</td>
<td align="center" rowspan="1" colspan="1">24.23</td>
<td align="center" rowspan="1" colspan="1">3.77</td>
</tr>
<tr>
<td align="center" rowspan="1" colspan="1">Malar</td>
<td align="center" rowspan="1" colspan="1">44.84</td>
<td align="center" rowspan="1" colspan="1">7.08</td>
<td align="center" rowspan="1" colspan="1">30.81</td>
<td align="center" rowspan="1" colspan="1">5.41</td>
<td align="center" rowspan="1" colspan="1">23.85</td>
<td align="center" rowspan="1" colspan="1">3.31</td>
</tr>
<tr>
<td align="center" colspan="8" rowspan="1">
<hr></hr>
</td>
</tr>
<tr>
<td align="left" rowspan="4" colspan="1">Group 3</td>
<td align="center" rowspan="1" colspan="1">Tooth </td>
<td align="center" rowspan="1" colspan="1">78.95</td>
<td align="center" rowspan="1" colspan="1">4.33</td>
<td align="center" rowspan="1" colspan="1">1.132</td>
<td align="center" rowspan="1" colspan="1">1.513</td>
<td align="center" rowspan="1" colspan="1">19.30</td>
<td align="center" rowspan="1" colspan="1">4.95</td>
</tr>
<tr>
<td align="center" rowspan="1" colspan="1">Ear lobe</td>
<td align="center" rowspan="1" colspan="1">37.79</td>
<td align="center" rowspan="1" colspan="1">14.82</td>
<td align="center" rowspan="1" colspan="1">26.55</td>
<td align="center" rowspan="1" colspan="1">7.96</td>
<td align="center" rowspan="1" colspan="1">19.32</td>
<td align="center" rowspan="1" colspan="1">6.91</td>
</tr>
<tr>
<td align="center" rowspan="1" colspan="1">Forehead</td>
<td align="center" rowspan="1" colspan="1">40.61</td>
<td align="center" rowspan="1" colspan="1">13.20</td>
<td align="center" rowspan="1" colspan="1">26.91</td>
<td align="center" rowspan="1" colspan="1">7.56</td>
<td align="center" rowspan="1" colspan="1">20.33</td>
<td align="center" rowspan="1" colspan="1">6.22</td>
</tr>
<tr>
<td align="center" rowspan="1" colspan="1">Malar</td>
<td align="center" rowspan="1" colspan="1">41.15</td>
<td align="center" rowspan="1" colspan="1">13.58</td>
<td align="center" rowspan="1" colspan="1">28.00</td>
<td align="center" rowspan="1" colspan="1">7.55</td>
<td align="center" rowspan="1" colspan="1">20.23</td>
<td align="center" rowspan="1" colspan="1">5.53</td>
</tr>
<tr>
<td align="center" colspan="8" rowspan="1">
<hr></hr>
</td>
</tr>
<tr>
<td align="left" rowspan="4" colspan="1">Group 4</td>
<td align="center" rowspan="1" colspan="1">Tooth </td>
<td align="center" rowspan="1" colspan="1">78.33</td>
<td align="center" rowspan="1" colspan="1">2.10</td>
<td align="center" rowspan="1" colspan="1">0.955</td>
<td align="center" rowspan="1" colspan="1">0.564</td>
<td align="center" rowspan="1" colspan="1">17.52</td>
<td align="center" rowspan="1" colspan="1">2.75</td>
</tr>
<tr>
<td align="center" rowspan="1" colspan="1">Ear lobe</td>
<td align="center" rowspan="1" colspan="1">190.18</td>
<td align="center" rowspan="1" colspan="1">8.44</td>
<td align="center" rowspan="1" colspan="1">127</td>
<td align="center" rowspan="1" colspan="1">9.37</td>
<td align="center" rowspan="1" colspan="1">116.32</td>
<td align="center" rowspan="1" colspan="1">10.07</td>
</tr>
<tr>
<td align="center" rowspan="1" colspan="1">Forehead</td>
<td align="center" rowspan="1" colspan="1">195.95</td>
<td align="center" rowspan="1" colspan="1">8.86</td>
<td align="center" rowspan="1" colspan="1">130.05</td>
<td align="center" rowspan="1" colspan="1">12.23</td>
<td align="center" rowspan="1" colspan="1">119.00</td>
<td align="center" rowspan="1" colspan="1">13.82</td>
</tr>
<tr>
<td align="center" rowspan="1" colspan="1">Malar</td>
<td align="center" rowspan="1" colspan="1">192.73</td>
<td align="center" rowspan="1" colspan="1">23.25</td>
<td align="center" rowspan="1" colspan="1">129.27</td>
<td align="center" rowspan="1" colspan="1">11.78</td>
<td align="center" rowspan="1" colspan="1">119.09</td>
<td align="center" rowspan="1" colspan="1">12.61</td>
</tr>
</tbody>
</table>
</table-wrap>
<table-wrap id="tab2" orientation="portrait" position="float">
<label>Table 2</label>
<caption>
<p>One-way ANOVA analysis for tooth
<italic>L</italic>
,
<italic>a</italic>
, and
<italic>b</italic>
values.</p>
</caption>
<table frame="hsides" rules="groups">
<thead>
<tr>
<th align="left" rowspan="1" colspan="1"></th>
<th align="center" rowspan="1" colspan="1">Sum of squares</th>
<th align="center" rowspan="1" colspan="1">df</th>
<th align="center" rowspan="1" colspan="1">Mean square</th>
<th align="center" rowspan="1" colspan="1">
<italic>F</italic>
</th>
<th align="center" rowspan="1" colspan="1">Significance</th>
</tr>
</thead>
<tbody>
<tr>
<td align="left" rowspan="1" colspan="1">T
<sub>
<italic>L</italic>
</sub>
</td>
<td align="center" rowspan="1" colspan="1"></td>
<td align="center" rowspan="1" colspan="1"></td>
<td align="center" rowspan="1" colspan="1"></td>
<td align="center" rowspan="1" colspan="1"></td>
<td align="center" rowspan="1" colspan="1"></td>
</tr>
<tr>
<td align="left" rowspan="1" colspan="1"> Between groups</td>
<td align="center" rowspan="1" colspan="1">145.265</td>
<td align="center" rowspan="1" colspan="1">3</td>
<td align="center" rowspan="1" colspan="1">48.422</td>
<td align="center" rowspan="3" colspan="1">3.917</td>
<td align="center" rowspan="3" colspan="1">0.009</td>
</tr>
<tr>
<td align="left" rowspan="1" colspan="1"> Within groups</td>
<td align="center" rowspan="1" colspan="1">2991.633</td>
<td align="center" rowspan="1" colspan="1">287</td>
<td align="center" rowspan="1" colspan="1">12.362</td>
</tr>
<tr>
<td align="left" rowspan="1" colspan="1"> Total</td>
<td align="center" rowspan="1" colspan="1">
<bold>3136.898</bold>
</td>
<td align="center" rowspan="1" colspan="1">
<bold>300</bold>
</td>
<td align="center" rowspan="1" colspan="1"></td>
</tr>
<tr>
<td align="center" colspan="6" rowspan="1">
<hr></hr>
</td>
</tr>
<tr>
<td align="left" rowspan="1" colspan="1">T
<sub>
<italic>a</italic>
</sub>
</td>
<td align="center" rowspan="1" colspan="1"></td>
<td align="center" rowspan="1" colspan="1"></td>
<td align="center" rowspan="1" colspan="1"></td>
<td align="center" rowspan="1" colspan="1"></td>
<td align="center" rowspan="1" colspan="1"></td>
</tr>
<tr>
<td align="left" rowspan="1" colspan="1"> Between groups</td>
<td align="center" rowspan="1" colspan="1">13.134</td>
<td align="center" rowspan="1" colspan="1">3</td>
<td align="center" rowspan="1" colspan="1">4.378</td>
<td align="center" rowspan="3" colspan="1">3.352</td>
<td align="center" rowspan="3" colspan="1">0.020</td>
</tr>
<tr>
<td align="left" rowspan="1" colspan="1"> Within groups</td>
<td align="center" rowspan="1" colspan="1">316.098</td>
<td align="center" rowspan="1" colspan="1">287</td>
<td align="center" rowspan="2" colspan="1"></td>
</tr>
<tr>
<td align="left" rowspan="1" colspan="1"> Total</td>
<td align="center" rowspan="1" colspan="1">
<bold>329.232</bold>
</td>
<td align="center" rowspan="1" colspan="1">
<bold>300</bold>
</td>
</tr>
<tr>
<td align="center" colspan="6" rowspan="1">
<hr></hr>
</td>
</tr>
<tr>
<td align="left" rowspan="1" colspan="1">T
<sub>
<italic>b</italic>
</sub>
</td>
<td align="center" rowspan="1" colspan="1"></td>
<td align="center" rowspan="1" colspan="1"></td>
<td align="center" rowspan="1" colspan="1"></td>
<td align="center" rowspan="1" colspan="1"></td>
<td align="center" rowspan="1" colspan="1"></td>
</tr>
<tr>
<td align="left" rowspan="1" colspan="1"> Between groups</td>
<td align="center" rowspan="1" colspan="1">252.172</td>
<td align="center" rowspan="1" colspan="1">3</td>
<td align="center" rowspan="1" colspan="1">84.057</td>
<td align="center" rowspan="3" colspan="1">4.785</td>
<td align="center" rowspan="3" colspan="1">0.003</td>
</tr>
<tr>
<td align="left" rowspan="1" colspan="1"> Within groups</td>
<td align="center" rowspan="1" colspan="1">4503.026</td>
<td align="center" rowspan="1" colspan="1">287</td>
<td align="center" rowspan="1" colspan="1">17.566</td>
</tr>
<tr>
<td align="left" rowspan="1" colspan="1"> Total</td>
<td align="center" rowspan="1" colspan="1">
<bold>4250.854</bold>
</td>
<td align="center" rowspan="1" colspan="1">
<bold>300</bold>
</td>
<td align="center" rowspan="1" colspan="1"></td>
</tr>
</tbody>
</table>
</table-wrap>
<table-wrap id="tab3" orientation="portrait" position="float">
<label>Table 3</label>
<caption>
<p>Pearson's correlation coefficient matrix of teeth and skin colour at different locations.</p>
</caption>
<table frame="hsides" rules="groups">
<thead>
<tr>
<th align="left" rowspan="1" colspan="1">Location</th>
<th align="center" rowspan="1" colspan="1">Values</th>
<th align="center" rowspan="1" colspan="1">Group 1</th>
<th align="center" rowspan="1" colspan="1">Group 2</th>
<th align="center" rowspan="1" colspan="1">Group 3</th>
<th align="center" rowspan="1" colspan="1">Group 4</th>
</tr>
</thead>
<tbody>
<tr>
<td align="left" rowspan="3" colspan="1">Earlobe</td>
<td align="center" rowspan="1" colspan="1">
<italic>L</italic>
</td>
<td align="center" rowspan="1" colspan="1">0.275∗</td>
<td align="center" rowspan="1" colspan="1">0.192</td>
<td align="center" rowspan="1" colspan="1">−0.399∗∗</td>
<td align="center" rowspan="1" colspan="1">−0.275</td>
</tr>
<tr>
<td align="center" rowspan="1" colspan="1">
<italic>a</italic>
</td>
<td align="center" rowspan="1" colspan="1">−0.240∗</td>
<td align="center" rowspan="1" colspan="1">−0.268∗</td>
<td align="center" rowspan="1" colspan="1">0.348∗∗</td>
<td align="center" rowspan="1" colspan="1">0.037</td>
</tr>
<tr>
<td align="center" rowspan="1" colspan="1">
<italic>b</italic>
</td>
<td align="center" rowspan="1" colspan="1">0.029</td>
<td align="center" rowspan="1" colspan="1">−0.142</td>
<td align="center" rowspan="1" colspan="1">0.479∗∗</td>
<td align="center" rowspan="1" colspan="1">−0.341</td>
</tr>
<tr>
<td align="center" colspan="6" rowspan="1">
<hr></hr>
</td>
</tr>
<tr>
<td align="left" rowspan="3" colspan="1">Forehead</td>
<td align="center" rowspan="1" colspan="1">
<italic>L</italic>
</td>
<td align="center" rowspan="1" colspan="1">0.217</td>
<td align="center" rowspan="1" colspan="1">0.271∗</td>
<td align="center" rowspan="1" colspan="1">−0.415∗∗</td>
<td align="center" rowspan="1" colspan="1">0.041∗</td>
</tr>
<tr>
<td align="center" rowspan="1" colspan="1">
<italic>a</italic>
</td>
<td align="center" rowspan="1" colspan="1">0.038</td>
<td align="center" rowspan="1" colspan="1">−0.164</td>
<td align="center" rowspan="1" colspan="1">0.285∗∗</td>
<td align="center" rowspan="1" colspan="1">0.024</td>
</tr>
<tr>
<td align="center" rowspan="1" colspan="1">
<italic>b</italic>
</td>
<td align="center" rowspan="1" colspan="1">−0.022</td>
<td align="center" rowspan="1" colspan="1">−0.065</td>
<td align="center" rowspan="1" colspan="1">0.502∗∗</td>
<td align="center" rowspan="1" colspan="1">−0.351</td>
</tr>
<tr>
<td align="center" colspan="6" rowspan="1">
<hr></hr>
</td>
</tr>
<tr>
<td align="left" rowspan="3" colspan="1">Malar</td>
<td align="center" rowspan="1" colspan="1">
<italic>L</italic>
</td>
<td align="center" rowspan="1" colspan="1">0.186</td>
<td align="center" rowspan="1" colspan="1">0.261∗</td>
<td align="center" rowspan="1" colspan="1">−0.390∗∗</td>
<td align="center" rowspan="1" colspan="1">−0.193</td>
</tr>
<tr>
<td align="center" rowspan="1" colspan="1">
<italic>a</italic>
</td>
<td align="center" rowspan="1" colspan="1">0.087</td>
<td align="center" rowspan="1" colspan="1">−0.185</td>
<td align="center" rowspan="1" colspan="1">0.447∗∗</td>
<td align="center" rowspan="1" colspan="1">0.083</td>
</tr>
<tr>
<td align="center" rowspan="1" colspan="1">
<italic>b</italic>
</td>
<td align="center" rowspan="1" colspan="1">0.061</td>
<td align="center" rowspan="1" colspan="1">−0.094</td>
<td align="center" rowspan="1" colspan="1">0.483∗∗</td>
<td align="center" rowspan="1" colspan="1">−0.354</td>
</tr>
</tbody>
</table>
<table-wrap-foot>
<fn>
<p> ∗Significant at
<italic>P</italic>
= 0.05. ∗∗Significant at
<italic>P</italic>
= 0.01.</p>
</fn>
</table-wrap-foot>
</table-wrap>
</floats-group>
</pmc>
</record>

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