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ORIGINAL RESEARCH
Association between the smile arc and buccal corridors with the facial biotype in subjects with normocclusion
La asociación entre el arco de sonrisa y los corredores bucales con el biotipo facial en sujetos con normoclusión
Gerardo Castruita Cruz1,
Corresponding author
gerardo_castruita@hotmail.com

Corresponding author.
, Antonio Fernández López2, Francisco Marichi Rodríguez2
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    "textoCompleto" => "<span class="elsevierStyleSections"><p id="par0005" class="elsevierStylePara elsevierViewall">The smile is the result of the sum of several attributes&#46; The value of an attractive smile is undeniable&#46; It is an important form of facial expression&#46; An esthetic smile is associated with intelligence&#44; sympathy&#44; extroversion&#44; and exerted degree of attraction&#46; Studies show that in subjects with aesthetic smiles greater social and intellectual skills are attributed to them&#46; A friendly smile helps win elections&#44; sell products and gives credibility&#46; However&#44; there are few objective criteria to determine the ideal attributes in the smile&#46;<a class="elsevierStyleCrossRefs" href="#bib0005"><span class="elsevierStyleSup">1&#8211;6</span></a></p><p id="par0010" class="elsevierStylePara elsevierViewall">The language is filled with words that describe different types of smile&#58; warm&#44; enigmatic&#44; sardonyx&#44; cordial&#44; hypocritical&#44; ironic&#44; inscrutable&#44; terrifying&#44; friendly&#44; mischievous&#44; seductive&#44; etc&#46; Nonetheless&#44; all these descriptions continue to be subjective&#46;<a class="elsevierStyleCrossRef" href="#bib0035"><span class="elsevierStyleSup">7</span></a></p><p id="par0015" class="elsevierStylePara elsevierViewall">There are few objective criteria to assess smile attributes&#44; establish therapeutic objectives relating to the relationship between lips and teeth and measure the results of orthodontic therapy&#46; Without morphogenic data on smile characteristics&#44; orthodontists have no choice but to be subjective in its evaluation&#46;<a class="elsevierStyleCrossRefs" href="#bib0005"><span class="elsevierStyleSup">1&#44;2</span></a> The assessment of beauty in the human body is clearly subjective&#46; Similarly&#44; the characteristics that make a beautiful face or smile seem to be intangible&#46; However&#44; scientific research has revealed systematic and repeatable objective characteristics that can be methodologically applied to analyze and alter dental aesthetics and smile&#46;</p><p id="par0020" class="elsevierStylePara elsevierViewall">Smile design is the objective assessment of the presence or absence of desirable esthetic features in a smile&#46; Each aesthetic principle can be considered and analyzed individually&#44; but it is its collective influence which creates the ultimate smile impact&#46;<a class="elsevierStyleCrossRefs" href="#bib0040"><span class="elsevierStyleSup">8&#44;9</span></a></p><p id="par0025" class="elsevierStylePara elsevierViewall">According to different authors<a class="elsevierStyleCrossRefs" href="#bib0050"><span class="elsevierStyleSup">10&#44;11</span></a> a spontaneous smile is involuntary and induced by joy or delight&#46; It is dynamic&#44; it triggers but is not maintained&#46; All facial expression muscles are involved in the process&#44; which leads to a pronounced deepening of the nasolabial folds and a characteristic gaze&#46; It is natural&#46; It expresses a genuine human emotion&#46;</p><p id="par0030" class="elsevierStylePara elsevierViewall">A social or posed smile is voluntary and does not require to be accompanied by emotions&#46; It is static&#44; it can be maintained&#46; It may appear tense and unnatural&#46; However&#44; it is assessed repeatable&#44; so it is considered optimal for analyzing the different elements that make up the smile&#46; Talking about aesthetics will always be subjective&#46; However&#44; it is important that orthodontists are familiar with the features that make a smile aesthetic and to have repeatable and measurable parameters so as to be able to provide the best results for their patients&#46;<a class="elsevierStyleCrossRefs" href="#bib0060"><span class="elsevierStyleSup">12&#44;13</span></a></p><p id="par0035" class="elsevierStylePara elsevierViewall">There is a gap in the specialized texts in orthodontics as far smile aesthetics is concerned&#46; Desirable occlusal characteristics are well defined&#44; but this does not guarantee that the visual effect is aesthetic&#44; or that it is in harmony with the patient&#39;s face&#46;</p><p id="par0040" class="elsevierStylePara elsevierViewall">Patients have diverse facial biotypes and the smile must be in harmony with the face to create an aesthetic effect&#46;</p><p id="par0045" class="elsevierStylePara elsevierViewall">The smile arc is the relationship between a hypothetical curve that runs through the incisal edges of the anterior upper teeth&#44; and the curve that the lower lip forms in a posed smile&#46; In a &#171;consonant&#187; or &#171;positive&#187; smile arc <span class="elsevierStyleItalic">&#40;</span><a class="elsevierStyleCrossRef" href="#fig0005"><span class="elsevierStyleItalic">Figure 1</span></a><span class="elsevierStyleItalic">&#41;</span> both curves match&#46; In a &#171;non-consonant&#187; smile arc <span class="elsevierStyleItalic">&#40;</span><a class="elsevierStyleCrossRef" href="#fig0010"><span class="elsevierStyleItalic">Figure 2</span></a><span class="elsevierStyleItalic">&#41;</span> the curve formed by the incisal edges of the anterior upper teeth is flat&#44; or inverse with respect to the curvature of the lower lip&#46;<a class="elsevierStyleCrossRef" href="#bib0070"><span class="elsevierStyleSup">14</span></a></p><elsevierMultimedia ident="fig0005"></elsevierMultimedia><elsevierMultimedia ident="fig0010"></elsevierMultimedia><p id="par0050" class="elsevierStylePara elsevierViewall">At smile bilateral spaces appear between the buccal surface of the most posterior visible maxillary tooth and the corner of the mouth&#46; They are called buccal corridors&#44; negative spaces or dark spaces<a class="elsevierStyleCrossRef" href="#bib0070"><span class="elsevierStyleSup">14</span></a><span class="elsevierStyleItalic">&#40;</span><a class="elsevierStyleCrossRef" href="#fig0015"><span class="elsevierStyleItalic">Figure 3</span></a><span class="elsevierStyleItalic">&#41;</span>&#46; The prosthodontic literature describes that the lack of buccal corridors produces an unreal appearance of the smile&#44; giving it an appearance that suggests that the subject has artificial teeth<a class="elsevierStyleCrossRef" href="#bib0075"><span class="elsevierStyleSup">15</span></a><span class="elsevierStyleItalic">&#40;</span><a class="elsevierStyleCrossRef" href="#fig0020"><span class="elsevierStyleItalic">Figure 4</span></a><span class="elsevierStyleItalic">&#41;</span>&#46;</p><elsevierMultimedia ident="fig0015"></elsevierMultimedia><elsevierMultimedia ident="fig0020"></elsevierMultimedia><p id="par0055" class="elsevierStylePara elsevierViewall">The main reason for which patients are willing to undergo orthodontic treatment is the search for dental aesthetics&#46; Several of them refer not feeling confident when smiling or having to cover their mouths with their hand when doing so&#44; due to the condition in which their mouth is and that they perceive as being non-aesthetic&#46; The esthetic assessment of the results of an orthodontic treatment is important because that was the original motivation by which the patient sought specialized professional attention&#46; By knowing the objective and modifiable factors that determine smile aesthetics&#44; the orthodontist will be in a position to offer his patients the aesthetic result they seek since the moment they ask for orthodontic care&#44; and he or she will also be able to adapt it to each patient according to their facial biotype&#46;</p><span id="sec0005" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0075">MATERIAL AND METHODS</span><p id="par0060" class="elsevierStylePara elsevierViewall">The study population consisted of 40 subjects between 18 and 25 years of age with normocclusion&#44; without prior orthodontic treatment or restorations in the occlusal faces of their teeth&#46; The frontal smile photography for each patient <span class="elsevierStyleItalic">&#40;</span><a class="elsevierStyleCrossRef" href="#fig0025"><span class="elsevierStyleItalic">Figure 5</span></a><span class="elsevierStyleItalic">&#41;</span>&#44; was obtained by positioning the subject&#39;s head with the Frankfurt plane parallel to the ground with the help of a positioning laser&#44; and placing a camera &#40;Sony Cyber-shot DSC-P100&#41; on a tripod a meter away&#46; In each photograph the type of arc smile &#40;consonant or consonant not&#41; that the patient presented was assessed as well as the presence or absence of buccal corridors&#46;</p><elsevierMultimedia ident="fig0025"></elsevierMultimedia><p id="par0065" class="elsevierStylePara elsevierViewall">Lateral head films were taken with the equipment of the Radiology Department at the Division of Postgraduate Studies and Research at the Faculty of Dentistry of the UNAM &#40;Orthopos XG&#44; Sirona&#41;&#44; and positioning the head of each patient with the Frankfurt plane parallel to the ground&#46; Digital radiographs were obtained and in each one of them Ricketts VERT was measured using the software Nemoceph NX 2008&#44; thereby determining the facial biotype of each subject&#46;</p><p id="par0070" class="elsevierStylePara elsevierViewall">The obtained data were analyzed with the SPSS-19software&#44; by applying the &#967;<span class="elsevierStyleSup">2</span> statistical test&#46; Four subjects were eliminated from the study sample because of lack of sharpness in their X-rays or photographs&#46;</p></span><span id="sec0010" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0080">RESULTS</span><p id="par0075" class="elsevierStylePara elsevierViewall">82&#46;5&#37; of the subjects showed a brachifacial biotype with presence of buccal corridors and a consonant smile arc&#46; The percentual distribution of the variables considered in this study appears in <a class="elsevierStyleCrossRefs" href="#tbl0005"><span class="elsevierStyleItalic">tables I to III</span></a>&#46; No statistically significant relation was found between the facial biotype and the type of smile arc &#40;&#967;<span class="elsevierStyleSup">2</span> &#61; 1&#44;608 p &#61; &#46;448&#41;&#46; Nor was it found a statistically significant relationship between facial biotype and the presence or absence of buccal corridors &#40;&#967;<span class="elsevierStyleSup">2</span> &#61; 2&#44;994 p &#61; &#46;224&#41;&#46; Data distribution according to the subject&#39;s facial biotype is found in <a class="elsevierStyleCrossRefs" href="#tbl0005"><span class="elsevierStyleItalic">tables I to IV</span></a>&#46;</p><elsevierMultimedia ident="tbl0005"></elsevierMultimedia><elsevierMultimedia ident="tbl0010"></elsevierMultimedia><elsevierMultimedia ident="tbl0015"></elsevierMultimedia><elsevierMultimedia ident="tbl0020"></elsevierMultimedia></span><span id="sec0015" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0085">DISCUSSION</span><p id="par0080" class="elsevierStylePara elsevierViewall">The objective of this research was to determine if the type of smile arc and the presence of buccal corridors are associated with a facial biotype&#46; Normally&#44; smile analysis has been considered as a separate entity from cephalometric tracings and clinical examination&#44; hence it is common not to take it into consideration during treatment planning&#46;<a class="elsevierStyleCrossRef" href="#bib0040"><span class="elsevierStyleSup">8</span></a> In our results&#44; 82&#46;5&#37; of the subjects had a brachifacial biotype with presence of buccal corridors and a positive smile arc&#46; While no other studies that try to associate facial biotype with these smile aesthetic characteristics have been reported&#44; the results of Christie<a class="elsevierStyleCrossRef" href="#bib0080"><span class="elsevierStyleSup">16</span></a> suggest that brachifacial subjects are more likely to develop a normal occlusion&#44; which coincides with our results&#46;</p><p id="par0085" class="elsevierStylePara elsevierViewall">A consonant smile arc has been considered by several authors<a class="elsevierStyleCrossRefs" href="#bib0030"><span class="elsevierStyleSup">6&#44;10&#44;11&#44;16</span></a> as an aesthetic factor of the smile&#44; but the results of Peck&#44;<a class="elsevierStyleCrossRef" href="#bib0065"><span class="elsevierStyleSup">13</span></a> Hulsey<a class="elsevierStyleCrossRef" href="#bib0085"><span class="elsevierStyleSup">17</span></a> and Tjan<a class="elsevierStyleCrossRef" href="#bib0090"><span class="elsevierStyleSup">18</span></a> demonstrate that a high percentage of patients who have undergone orthodontic treatment&#44; at the end of it&#44; exhibit a flat or neutral arc&#46; Goldstein<a class="elsevierStyleCrossRef" href="#bib0095"><span class="elsevierStyleSup">19</span></a> and Frush<a class="elsevierStyleCrossRef" href="#bib0100"><span class="elsevierStyleSup">20</span></a> established a correlation between a non-consonant smile arc with an older appearance&#46; By having selected subjects without prior orthodontic treatment we were able to assess the normal development of the smile arc in subjects with normocclusion&#46;</p><p id="par0090" class="elsevierStylePara elsevierViewall">Ritter<a class="elsevierStyleCrossRef" href="#bib0075"><span class="elsevierStyleSup">15</span></a> and Goldstein<a class="elsevierStyleCrossRef" href="#bib0095"><span class="elsevierStyleSup">19</span></a> agree with the aesthetic importance of buccal corridors at smile which is in contrast with the results of Hulsey&#44; who reports that people outside the dental environment do not have a preference of a smile that presents buccal corridors over one that doesn&#8217;t&#46; However&#44; our results suggest that subjects with normal occlusions and positive smile arcs tend to also have buccal corridors&#46;</p></span><span id="sec0020" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0090">CONCLUSIONS</span><p id="par0095" class="elsevierStylePara elsevierViewall"><ul class="elsevierStyleList" id="lis0005"><li class="elsevierStyleListItem" id="lsti0005"><span class="elsevierStyleLabel">&#8226;</span><p id="par0100" class="elsevierStylePara elsevierViewall">Aesthetic characteristics of the smile such as a consonant smile arc and the presence of buccal corridors are present in subjects with normocclusion and are not affected by facial biotype&#46;</p></li><li class="elsevierStyleListItem" id="lsti0010"><span class="elsevierStyleLabel">&#8226;</span><p id="par0105" class="elsevierStylePara elsevierViewall">Among orthodontic treatment objectives it should be considered to provide or maintain a consonant smile arc and the buccal corridors&#46;</p></li></ul></p></span></span>"
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        "titulo" => "ABSTRACT"
        "resumen" => "<span id="abst0005" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0010">Introduction</span><p id="spar0005" class="elsevierStyleSimplePara elsevierViewall">The correlation between the aesthetic characteristics of the smile and the facial biotype&#44; could be useful in the design of the treatment plan&#46;</p></span> <span id="abst0010" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0015">Objectives</span><p id="spar0010" class="elsevierStyleSimplePara elsevierViewall">To assess the relationship between Facial Biotype and the smile aesthetics evaluating the smile arc and the presence or absence of buccal corridors in subjects with normocclusion&#46;</p></span> <span id="abst0015" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0020">Methods</span><p id="spar0015" class="elsevierStyleSimplePara elsevierViewall">From a sample of 100 subjects with normocclusion&#44; 40 of them were randomly selected&#44; 22 women and 18 men between 18 to 25 years&#44; without temporomandibular joint or periodontal problems and without prior orthodontic treatment&#46; Fontal photographs of social or posed smiles were used to determine the smile arc &#40;consonant or not consonant&#41; and the presence or absence of buccal corridors&#46;</p></span> <span id="abst0020" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0025">Results</span><p id="spar0020" class="elsevierStyleSimplePara elsevierViewall">82&#46;5&#37; of the subjects showed a brachifacial biotype&#44; with presence of buccal corridors and a consonant smile arc&#46; No statistically significant relation was found between the facial biotype and the smile arc or with the presence or absence of buccal corridors&#46;</p></span> <span id="abst0025" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0030">Conclusions</span><p id="spar0025" class="elsevierStyleSimplePara elsevierViewall">Aesthetic characteristics of the smile such as the smile arc and buccal corridors are present in subjects with normocclusion and are not affected by the facial biotype&#46;</p></span>"
        "secciones" => array:5 [
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            "identificador" => "abst0005"
            "titulo" => "Introduction"
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          1 => array:2 [
            "identificador" => "abst0010"
            "titulo" => "Objectives"
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          2 => array:2 [
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            "titulo" => "Methods"
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          3 => array:2 [
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      "es" => array:3 [
        "titulo" => "RESUMEN"
        "resumen" => "<span id="abst0030" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0040">Introducci&#243;n</span><p id="spar0030" class="elsevierStyleSimplePara elsevierViewall">La correlaci&#243;n entre las caracter&#237;sticas est&#233;ticas de la sonrisa y el biotipo facial&#44; podr&#237;a ser &#250;til en el dise&#241;o del plan de tratamiento&#46;</p></span> <span id="abst0035" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0045">Objetivos</span><p id="spar0035" class="elsevierStyleSimplePara elsevierViewall">Evaluar la relaci&#243;n entre el biotipo facial y la est&#233;tica de la sonrisa&#44; evaluando el arco de sonrisa y la presencia o ausencia de corredores bucales en sujetos con normoclusi&#243;n&#46;</p></span> <span id="abst0040" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0050">M&#233;todo</span><p id="spar0040" class="elsevierStyleSimplePara elsevierViewall">De una muestra de 100 sujetos con normoclusi&#243;n se seleccionaron aleatoriamente 40 de ellos&#44; 22 mujeres y 18 hombres&#44; entre 18 a 25 a&#241;os&#44; sin problemas articulares ni periodontales y sin previo tratamiento de ortodoncia&#46; Se utilizaron fotograf&#237;as frontales en sonrisa de pose para determinar el arco de sonrisa &#40;consonante o no consonante&#41; y la presencia o ausencia de corredores bucales&#46;</p></span> <span id="abst0045" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0055">Resultados</span><p id="spar0045" class="elsevierStyleSimplePara elsevierViewall">El 82&#46;5&#37; de los sujetos mostraron un biotipo braquifacial&#44; con presencia de corredores bucales y arco de sonrisa consonante&#46; No se encontr&#243; una relaci&#243;n estad&#237;sticamente significativa entre el biotipo facial y el arco de sonrisa ni la presencia o ausencia de corredores bucales&#46;</p></span> <span id="abst0050" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0060">Conclusiones</span><p id="spar0050" class="elsevierStyleSimplePara elsevierViewall">Las caracter&#237;sticas est&#233;ticas de la sonrisa tales como el arco de sonrisa y la presencia de corredores bucales est&#225;n presentes en los sujetos con normoclusi&#243;n y no se ven afectadas por el biotipo facial&#46;</p></span>"
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        "nota" => "<p class="elsevierStyleNotepara" id="npar0010">Graduate of the specialty of Orthodontics in the Division of Postgraduate Studies and Research &#40;DEPeI&#41;&#44; FO UNAM&#46; Professor at UCQ and professor of the Dental Studies Center at Queretaro&#46;</p>"
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                  \t\t\t\t" class=""><thead title="thead"><tr title="table-row"><th class="td" title="table-head  " align="left" valign="top" scope="col" style="border-bottom: 2px solid black">Smile arc&nbsp;\t\t\t\t\t\t\n
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                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">83&#46;3&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td-with-role" title="table-entry ; entry_with_role_rowhead " align="left" valign="top">Absence&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">16&#46;7&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr></tbody></table>
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                  <table border="0" frame="\n
                  \t\t\t\t\tvoid\n
                  \t\t\t\t" class=""><thead title="thead"><tr title="table-row"><th class="td" title="table-head  " align="" valign="top" scope="col">&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</th><th class="td" title="table-head  " align="" valign="top" scope="col">&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</th><th class="td" title="table-head  " align="" valign="top" scope="col">&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</th><th class="td" title="table-head  " colspan="4" align="center" valign="top" scope="col" style="border-bottom: 2px solid black">Smile arc</th><th class="td" title="table-head  " align="" valign="top" scope="col">&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</th><th class="td" title="table-head  " align="" valign="top" scope="col">&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</th></tr><tr title="table-row"><th class="td" title="table-head  " colspan="3" align="center" valign="top" scope="col">Facial biotype</th><th class="td" title="table-head  " colspan="2" align="center" valign="top" scope="col" style="border-bottom: 2px solid black">Consonant</th><th class="td" title="table-head  " colspan="2" align="center" valign="top" scope="col" style="border-bottom: 2px solid black">No consonant</th><th class="td" title="table-head  " colspan="2" align="center" valign="top" scope="col" style="border-bottom: 2px solid black">Total</th></tr><tr title="table-row"><th class="td" title="table-head  " align="" valign="top" scope="col" style="border-bottom: 2px solid black">&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</th><th class="td" title="table-head  " align="" valign="top" scope="col" style="border-bottom: 2px solid black">&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</th><th class="td" title="table-head  " align="" valign="top" scope="col" style="border-bottom: 2px solid black">&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</th><th class="td" title="table-head  " align="left" valign="top" scope="col" style="border-bottom: 2px solid black">N&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</th><th class="td" title="table-head  " align="left" valign="top" scope="col" style="border-bottom: 2px solid black">&#37;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</th><th class="td" title="table-head  " align="left" valign="top" scope="col" style="border-bottom: 2px solid black">N&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</th><th class="td" title="table-head  " align="left" valign="top" scope="col" style="border-bottom: 2px solid black">&#37;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</th><th class="td" title="table-head  " align="left" valign="top" scope="col" style="border-bottom: 2px solid black">N&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</th><th class="td" title="table-head  " align="left" valign="top" scope="col" style="border-bottom: 2px solid black">&#37;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</th></tr></thead><tbody title="tbody"><tr title="table-row"><td class="td-with-role" title="table-entry ; entry_with_role_rowhead " align="left" valign="top">Mesofacial&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">Buccal corridors&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">Presence&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">6&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">85&#46;7&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">1&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">14&#46;3&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">7&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">100&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="table-entry  " align="" valign="top">&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="" valign="top">&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">Absence&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">0&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">0&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">0&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">0&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">0&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">0&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="table-entry  " align="" valign="top">&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">Total&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="" valign="top">&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">6&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">85&#46;7&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">1&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">14&#46;3&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">7&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">100&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td-with-role" title="table-entry ; entry_with_role_rowhead " align="left" valign="top">Brachifacial&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">Buccal corridors&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">Presence&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">18&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">78&#46;3&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">0&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">0&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">18&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">78&#46;3&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="table-entry  " align="" valign="top">&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="" valign="top">&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">Absence&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">4&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">17&#46;4&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">1&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">4&#46;3&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">5&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">21&#46;7&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="table-entry  " align="" valign="top">&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">Total&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="" valign="top">&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">22&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">95&#46;7&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">1&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">4&#46;3&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">23&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">100&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td-with-role" title="table-entry ; entry_with_role_rowhead " align="left" valign="top">Dolichofacial&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">Buccal corridors&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">Presence&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">9&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">90&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">0&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">0&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">9&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">90&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="table-entry  " align="" valign="top">&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="" valign="top">&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">Absence&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">1&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">10&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">0&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">0&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">1&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">10&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="table-entry  " align="" valign="top">&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">Total&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="" valign="top">&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">10&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">100&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">0&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">0&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">10&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">100&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr></tbody></table>
                  """
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          "en" => "<p id="spar0095" class="elsevierStyleSimplePara elsevierViewall">Percentage distribution and number of cases in the sample&#44; according to facial biotype&#46;</p>"
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              "identificador" => "bib0005"
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                  "contribucion" => array:1 [
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                      ]
                    ]
                  ]
                  "host" => array:1 [
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                      "Revista" => array:5 [
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                0 => array:2 [
                  "contribucion" => array:1 [
                    0 => array:2 [
                      "titulo" => "Anatomy of &#8220;A beautiful face &#38; smile&#8221;"
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            2 => array:3 [
              "identificador" => "bib0015"
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                0 => array:2 [
                  "contribucion" => array:1 [
                    0 => array:2 [
                      "titulo" => "Characterization of posed smile by using visual analog scale&#44; smile arc&#44; buccal corridor measures&#44; and modified smile index"
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                    0 => array:2 [
                      "titulo" => "Digital videographic measurement of tooth display and lip position in smiling and speech&#58; reliability and clinical application"
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              "identificador" => "bib0025"
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                        "volumen" => "51"
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                          "autores" => array:5 [
                            0 => "C&#46; Flores-Mir"
                            1 => "E&#46; Silva"
                            2 => "M&#46;I&#46; Barriga"
                            3 => "M&#46;O&#46; Lagravere"
                            4 => "P&#46;W&#46; Major"
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                    0 => array:2 [
                      "doi" => "10.1179/146531204225022416"
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