In 1962, he published another paper which talked about clinical applications of using Bolton Analysis in Orthodontics.
However, in 1995, Shellhart et al. showed during their study that Vernier caliper can also be used as an alternative for Bolton Analysis.
[3] Many other investigation models have been developed, such as measurement from photocopies and traveling microscope but the studies have produced no results.
[4] Recently, digital calipers from companies such as OrthoCad, are being used to measure the mesiodistal widths of the teeth.
One of the drawbacks of this analysis, is that the sample that Bolton measured in his paper in 1958, consisted of only Caucasian population.