الفهرس 
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Abstract
- Aim: The aim of the study was to investigate the caries experience in primary molars
and first permanent molars among a group of Egyptian children.
- Methodology: The study was carried out on 68 patients with age range from 6-9 years
old, attending the Outpatients’ Clinic of Pediatric Dentistry Department, Faculty of Dentistry,
Cairo University. A specially designed assessment chart was filled for each child. The child teeth
were cleaned using sterile gauze, then dental examination was performed on dental unit using
disposable diagnostic set, the caries was assessed using deft index for primary teeth and DMFT
index for permanent teeth. Also, a bite-wing radiograph was obtained for each child in order to
diagnose proximal caries.
VIII
- Results: As regards gender, male and female patients were counted as (42.65%) and (57.3%)
respectively, it was revealed that there was no significant difference between genders and caries
prevalence as P-value > 0.05. Regarding age(years) there was significant difference between all ages as
deft and DMFT scores were higher in older ages. The caries prevalence was higher in primary molars with
mean deft of (3.02± 1.17), while in permanent molars the mean DMFT was (1.13±1.18). Regarding the
relation between caries experience in primary molars and first permanent molars, a positive correlation
was found.
- Conclusion: The data obtained from this study revealed that the presence of caries in primary
molars posed a risk for developing caries in the first permanent molars. However, since we could examine
only a limited number of children, further clinical studies with larger patient groups are needed.