A comparison of 3 computerized Bolton tooth-size analyses with a commonly used method

The Angle Orthodontist
J J TomassettiJ R Fischer

Abstract

Four methods of conducting overall and anterior Bolton tooth-size analyses were compared using 22 (11 pretreatment and 11 posttreatment) sets of models. No more than 3 mm of crowding existed in any of the models, and all were in good condition. An analysis employing vernier calipers was completed 3 times to set a standard. Pearson correlation coefficients revealed a high degree of intra-operator reliability with mean R values of 0.930 and 0.843 for the overall and anterior discrepancies, respectively. The mean Vernier caliper results were compared with each of the following computerized methods: QuickCeph, Hamilton Arch Tooth System (HATS), and OrthoCad. No statistically significant error was present for any of the methods using repeated-measures analysis of variance testing and paired t-tests (p < .05). Clinically significant differences (>1.5 mm) were present for each method. Absolute differences were calculated, and linear regression and R values were determined. The HATS analysis had the highest degree of correlation (R = 0.885 for overall and 0.825 for anterior), followed by OrthoCad (R = 0.715, 0.574), and QuickCeph (R = 0.432, 0.439). Each method also was compared based on the time required to complete each analysis. The...Continue Reading

Citations

Jun 1, 2013·Biomedical Engineering Online·Magdalena KasparovaSoroush Kakawand

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