Child 1 Child, Preschool 1 Dental Caries 1 Early childhood caries 1 Heart Septal Defects, Ventricular Humans 1 Interleukin-6 1 Periodontal Index 1 Quality of Life 1 Saliva 1 child 1 complication 1 dental caries 1 heart septum defect 1 human 1 interleukin 6 1 metabolism 1 periodontal index 1 preschool child 1 quality of life 1 saliva 1 salivary interleukin-6 1 ventricular septal defect 1