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American Journal of Orthodontics and Dentofacial Orthopedics, 2007-07-01, Volume 132, Issue 1, Pages 127-127, Copyright © 2007 American Association of Orthodontists

Introduction: The objectives of this study were to determine whether differences exist in dental arch relationships (favorable vs unfavorable) after primary surgery for children with unilateral cleft lip and palate between 2 craniofacial centers and to consider the reliability and validity of the Goslon Yardstick.

Methods: Nonsyndromic unilateral cleft lip and palate children were treated. Several surgical protocols were used to repair the cleft lips and palates. The dental arch relationships were categorized by using the Goslon Yardstick. Favorable interarch relationships were categorized as groups 1, 2, and 3 and unfavorable arch relationships as groups 4 and 5. Odds ratios were calculated to quantify the association between unfavorable dental arch relationships and the samples. Kruskal-Wallis and Mann-Whitney statistics tested for differences in dental arch relationships among the 3 samples. Unfavorable arch relationships were found for 22%, 11%, and 28% for samples A, B, and C, respectively. There was no statistically significant association between the samples and unfavorable outcomes ( P <.05). Samples A and B had statistically significant lower mean rank Goslon groupings compared with sample C ( P <.05). The Goslon Yardstick gives a general outcome assessment of the relationship of the dental arches.

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Conclusion: Even though a statistically significant higher prevalence of unfavorable outcomes was found in sample C ( P <.05), one cannot conclude that an unfavorable outcome will be more likely in any 1 sample.