This study is to find the relation of caries color to caries severity and its microbial load in primary molars.

This study is to investigate the relationship between the caries color to caries severity and its microbial load.

Inclusion Criteria:

1. Their ages ranged from (4 to 7) years.
2. They were healthy, free from any chronic disease and had no previous anxiety disorder or medical disability such as the history of seizures or convulsion disorders, nystagmus, vertigo or equilibrium disorders, eye problems and autism.
3. Primary molars with class 1 caries, normal furcation and normal periapical bone structure
4. They were indicated for restorative treatment under local anesthesia.
5. They were not indicated for pharmacological management

Exclusion Criteria:

1. Primary molars with class 2 caries
2. Teeth with mobility
3. Periapical abscess
4. Fistula