This an analysis that is used in dentistry to predict the size of the permanent premolars and canines by measuring the width of the permanent incisors.
The analysis usually requires a dental cast, Boley's gauge and a Probability Chart.
Following are the steps used in this analysis Some of the advantages of this analysis are that it has minimum systemic errors, easy to perform by both beginners and expert dentists, it can be used for both the arches, can be performed on both casts or in mouth, and does not require any radiographic projections.
Limitations of this analysis are that this is a probability analysis,[1] does not account for tipping of incisors lingual or buccal and that maxillary tooth sizes are predicted by the mandibular tooth sizes.
This was confirmed by a systematic review which was performed in 2004.