9) Both in first and second molars, these two CDTMs were absent from this sample (figure 6).
From this gradient, the other teeth of the same class experience not only a reduction in size but also in the expression (frequency) and variability (gradation) of the CDTMs, producing structure simplification.
This situation is much more evident among the molars, as the CDTMs of the first molar, both upper and lower, experience a reduction up to the third molar--a tooth that, along with upper lateral incisors and lower second premolars, has received the greatest environmental influences--.
Dental patterns and their geographical distribution, as suggested by Hanihara, (21) Turner, (22) and Schott and Turner, (12) by means of the study of 29 CDTMs (thirteen of which were considered in this study), classify human beings in five clusters: The Mongoloid dental complex formed by cynodont and sundadont groups, the Caucasoid dental complex, formed by the groups from Western Eurasia (Europe, North Africa, the Middle East and India), the Saharan Africa dental complex (formed by the subgroups of Western Africa and South Africa, much more closed to the sundadont populations of the South Pacific), the groups of south Pacific or Oceania, and the American Paleoindians.
However, the CDTMs that more commonly characterize these groups are: a higher frequency of cuspid expression of the Carabelli's cusp, and cuspid patterns X and +.
In the case of Colombia, Rocha et al (11) studied eleven CDTMs in a group of Afro-Americans from Puerto Tejada (Cauca) finding out high frequencies of Carabelli's cusp of medium size (degree 5), cusp patterns +5 and +6, and cusp 7; they associated this finding with the influence of Western dental complex (Caucasoid and Negroid).
Hasta junio pasado, cuando se entrego el oficio vecinal a la SFP, en el CDTM habia 14 adolescentes en tratamiento; dos de ellas ingresaron embarazadas y tienen a sus bebes con ellas.
Consultada sobre el tema, la coordina dora de investigacion de antropologia de la infancia y adolescencia en la Escuela Nacional de Antropologia e Historia, Maria de la Paloma Escalante Gonzalbo, explica que realiza estos estudios con las ninas del CDTM, pero que desde febrero le prohibieron el acceso.
Al ser una visitante asidua del CDTM, Maria de la Paloma Escalante conoce casi a todas las ninas.
El Centro de Tratamiento en Internacion Comunidad Terapeutica Re-educativa, donde el gobierno federal reubico a las internas del CDTM
, tiene 79 empleados y capacidad para 40 jovenes, aunque actualmente alberga solo a 16.