Abstract
This neck measurement is valuable because occlusal wear is frequently severe in these teeth, with loss of crown substance. In measuring the mesiodistal dimension of tooth crowns some workers have recorded the maximum mesiodistal diameter, while others have preferred to measure the diameter between adjacent contact points. Goose maintains that: . . in many cases there will not be a serious discrepancy whichever way is chosen . . .2; Lunt found that there was little difference in the buccolingual measurements obtained by measuring teeth in situ, and the true projective measurements of extracted teeth3. Probably the intra-observer difference in measurements recorded at different times would cover the above source of error in
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