Cureus. 2024 Oct 16;16(10):e71611. doi: 10.7759/cureus.71611. eCollection 2024 Oct.
ABSTRACT
INTRODUCTION: The modified OXIS (O – open contact, X – point contact, I – straight contact, S – curved contact) classification provides a useful framework for assessing interproximal contacts in primary canines and predicting caries risk. The study aimed to assess the incidence of modified OXIS classification of canine interproximal contacts in six-to-nine-year-old children from the Delhi National Capital Region (NCR) population.
METHODS: A cross-sectional study was conducted to assess the interproximal contact areas between primary canine and first molar among six-to-nine-year-old children (n=400) according to the modified OXIS classification using the die stone study model. A single calibrated examiner performed a type III examination to assess a total of 1,536 contact areas from the occlusal aspect. The prevalence of each type was reported in terms of both numbers and percentages using the Chi-square test to find the prevalence, Fisher’s exact test to compare the inter- and intra-arch occurrence of the different contact types, and Kruskal-Wallis test to find its correlation with age.
RESULTS: The Chi-square test showed that the most common contact type was I at 46.55% (715), followed by S1 at 28.06% (431), X at 18.56% (285), O at 6.19% (95), and S2 at 0.65% (10). The p-value of 0.000 indicated a statistically significant difference among the groups. The Kruskal-Wallis test found no statistically significant differences in patient ages. Additionally, Fisher’s exact test demonstrated a statistically significant prevalence of types O, I, and S1 when comparing them across arches.
CONCLUSION: Based on the current study, the most common contact type observed was type I, followed by type S1, according to the modified OXIS criteria. The findings indicate a higher prevalence of closed-type contacts in this population, suggesting that the occurrence of such contacts increases as permanent teeth erupt. This tool may be useful for assessing caries risk in this age group.
PMID:39553136 | PMC:PMC11566099 | DOI:10.7759/cureus.71611
