Kvaal et al Ageing Technique

There are many techniques for ageing individuals, some can be used on deceased and living, some just on deceased.  The Kvaal technique was published in 1995 and remains a popular method.  Based on the biological changes in pulp cavity size (caused by the result of secondary dentine deposit) the technique can be used on radiographs.

Teeth generally used are maxillary incisors and second premolars, mandibular lateral incisors, canines and first premolars.

Screen Shot 2015-08-03 at 15.55.22A total of six measurements are made on each tooth as shown here.  The technique is complex to undertake and therefore prone to examiner variability.  It is also highly subject to the quality of the radiographs that are examined.

It should be noted that the Kvaal technique found, in its initial use that the ratio of overall length of the tooth vs the root was not significantly correlated with age and hence is no longer used in analyses.

The technique has been revisited in numerous papers that have examined, as suggested by the authors, the difference in other populations where it has been found to be similarly accurate to the original study.

Once the measurements have been undertaken, and depending on the number and type of teeth used the following tables can be used to calculate the age:

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