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Table 4 Cumulative incidence of developing dental caries in the maxillary and mandibular teeth of the FPMs

From: The anticaries effects of pit and fissure sealant in the first permanent molars of school-age children from Guangzhou: a population-based cohort study

Tooth site Sealant group Control group χ2 value P value
All the FPMs Dental caries cumulative incidence of caries (%) All the FPMs Dental caries cumulative incidence of caries (%)
Maxilla 12234 821 6.71* 10917 1194 10.94* 129.68 < 0.001
Mandible 1768 160 9.05 2044 335 16.39 45.20 < 0.001
Total 14002 981 7.01 12961 1529 11.80 182.98 < 0.001
  1. FPMs = first permanent molars; * compare cumulative incidence of caries between maxilla and mandible, P < 0.001