Table 3. Correlations between barrier factors and mean REX scores and the proportion of ART restorations in the total number of restorations placed per dentition.

Primary dentition Barrier factors	Mean REX score	ART % of the total number of restorations placed
TOTAL	0.15	-0.58*
Patient load	0.17	-0.31
Operator opinion	0.35	-0.40
Patient opinion	-0.06	-0.34
Service management	-0.06	-0.33
Material supply	0.48*	-0.40
Clinical ART skills	0.19	-0.63**
Chair side assistance	-0.29	-0.15
Permanent dentition Barrier factors	Mean REX score	ART % of the total number of restorations placed
TOTAL	0.35	-0.84**
Patient load	0.39	-0.54*
Operator opinion	0.39	-0.53*
Patient opinion	0.13	-0.76**
Service management	-0.04	-0.46*
Material supply	0.49*	-0.29
Clinical ART skills	0.30	-0.44
Chair side assistance	-0.03	-0.57*

p-value: Pearson correlation test

^*0.01<p<0.05

^**p< 0.01

Correlations among all barrier factors are shown in Table 4. Statistically significant correlations were observed between patient load/work load and operator opinion (r= 0.70; p<0.05) and between patient load/work load and patient opinion (r = 0.73; p<0.01). There was a significant correlation between the barrier factors, operator opinion and patient opinion (r = 0.77; p<0.01). The barrier factors, oral health service management, correlated significantly with operator opinion (r = 0.52; p<0.05) and patient opinion (r = 0.57; p<0.01).