Aim: The aim of this study was to investigate the 
relationship between Body Mass Index (BMI) and mean 
DMFT score of 12 year old school children in Ohrid city. 
Materials and Methods: This cross-sectional study 
assessed school children aged 12 years with measurement 
of the DMFT (Decayed, Missed, and Filled Teeth) dental 
indexes and BMI (Body-Mass Indexes) analyzed during 
four months period in 2014 year. Anthropometric 
measurements: the height and weight of the participants 
were determined according to standard criteria. Depending 
on their nutritional status, the subjects were categorized, 
as being ‘normal weight,’ "at risk of overweight" and 
"overweight". 
Results: In the group of 102 12-year-old children, 55 
children were with normal weight, 25 children were at risk 
of overweight and 22 overweight children. The majority 
of the children were having normal weight (BMI < 20.50) 
with 21.57% classified as overweight (BMI 24.35−34.53) 
and 25.49% at risk of overweight obese (BMI 20.50
24.35). The mean DMFT score of the 12 year old children 
from city Ohrid was 2.25±2.17. The mean DMFT score 
between the children with normal weight was 2.53±2.27, 
between the overweight children was 2.32±2.46 and while 
between the children at risk of overweight was 1.6±1.55. 
The children with normal weight had highest DMFT 
score. The difference between the average DMFT scores between the children with normal weight and the 
overweight children was not statistically significant. 
Children at risk of overweight were with lowest DMFT 
score.  
Conclusion: Being overweight was found to be negatively 
associated with mean DMFT in primary school children 
from Ohrid city. 

Keywords: Body Mass Index; Dental Caries; School 
Children.