Dental Essay

670 words - 3 pages

Interestingly human race can be studied through a dental basis as many anthropologist have discovered and researched. Variations of sizes and appearance is inherited and not so much a response to environmental factors. The inheritance depends on certain genes, among other factors. The degree of penetrance sets up the foundation of dental anthropology which has been used to trace the human race its origins. The study helps understand the racial affinity between the population and human race and how the relationship can be traced. Anthropologist usually conduct the studies but statistical analysis which rather than focusing on individual features it uses groups of traits making the process complicated. The system used the notion that when frequencies of a feature are low a large sample size was needed. When members of a subdivision of species exhibit similar cultural and biological traits the term is defined as race. Therefore, when extremely heritable dental variants take place in similar frequency in two populations.
The anatomical alignment of teeth is structures by the well-aligned dental arch which is categorized of three segments. The anterior segment is the curved line in the coronal plane. The anterior segment continues to midline from one canine to the other. The middle segment is a straight line is goes from the distal edge to the first molars mesiobuccal cusps canines. The posterior segment goes from the mesiobuccal cusps of back to the first molars. Similarly the posterior and middle segments take place at the sagittal plane but distinguished as the posterior is more parallel to the plane than the middle segments. From individual to individual the size of the dental arches vary remarkably. For example, the permanent dentition of a twenty year old compared to the deciduous dentition of a five year old. Variation in the skeletal morphology of the jaws in regards to the malrelationship of dental arches can lead to the malposition of individual teeth resulting in malocclusions. There is a debate regarding the...

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