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To determine the age of adults after the permanent teeth have erupted, it is common to use
Gusftason analysis, which consists of studying six characteristics present in adulthood which
that author numbered from 0 to 3, where 0 represents absence of the feature and 3 represents
its presence in an advanced state.
The following table shows those characteristics and the respective values:
Attrition (A)
Periodontitis (P)
Secondary dentin (D)
Build-up of cementum (C)
Root resorption (R)
Root transparency (T)
346
0 1 2 3
Plotting the combined points in a Cartesian graph provides an estimate of age.
Determination of sex
Absence
Absence
Absence
Absence
Absence
Absence
Enamel affected
Onset of periodontitis
Formation in the upper
part of the pulp cavity
Build up somewhat
greater than normal
Resorption in small
isolated areas
Root transparency noted
Dentin affected
First third of
root affected
Pulp cavity up
to half filled
Large covering
of cementum
Greater degree of loss
of substance
Apical third exceeded
Teeth possess certain characteristics which, when combined with features of the skull and
jawbones, can help to determine sex. Some of those characteristics are shown in the following
charts.
Teeth Masculine Femenine
Diameter M-D incisors Disproportionate and misaligned Uniform and aligned
Angles Robustsand quadrangular Delicate and rounded
Colour Darker Clearer
Size Large Small
Jaw Masculine Femenine
Average weight 80g 63g
Gonial angle 125º
Symphysis menti Higher Lower
Size larger smaller
Condyles larger smaller
Inserciones musculares More marked Less marked
Bicondylar width 125mm