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

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

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

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

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

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

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

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

Results – Tooth related factors 0.22 0.05*

Results – Operator related factors 0.002* 0.003*

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.

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