1. Factors Influencing The Survival Of Composite Restorations In Primary Teeth
Vinay Pitchika

2. Objective
Little information is available on which factors influence the survival and longevity of composite restorations in primary teeth.
To analyse several groups of risk factors in relation to the survival of composite restorations in children with a maximum follow-up of 9 years

3. Methods Inclusion criteria Exclusion criteria:
Both male and female children
Age 1-13 years
Fillings involving primary dentition
More than one filling per patient is acceptable
Exclusion criteria:
Fillings involving permanent dentition
Less frequently used restorative materials

4. Methods Study population: Mean age of 6.6 years (range: 1-13 years )
601 patients (319 males & 282 females)
2146 composite restorations

5. Methods Factors analyzed:
Patient factors – age, gender, insurance status
Tooth factors – surfaces filled, Black’s classification, dmft
Operator factors – dental dam, bonding system, composite material

6. Methods Statistical methods: Descriptive analyses
Cox regression method using backward elimination model
Step-wise model with different factor groups separately
Overall model with all factors together

7. Results 3.6 fillings per patient (range: 1-20)
Males have higher dmft (6.21 vs. 5.06)sig
17% of overall fillings had failed
Mean annual failure rate of 11.7%
Secondary caries – major cause of failure (52.2%)
sig denotes – statistically significant result

8. Results – Patient related factors
0.07
0.03*
0.002*
0.03*

9. Results – Tooth related factors
0.22
0.05*

10. Results – Operator related factors
0.002*
0.003*

11. Conclusion
There are various factors that influence the survival and longevity of composite restorations.
This study also underlines that the bonding system is more important than the composite material itself in deciding the success of a composite restoration.

12. Thank you