Available online 4 March 2023
Author links open overlay panel, , , , AbstractBackgroundThe aim of the present study is to evaluate the most common reasons for replacing posterior amalgam and resin composite restorations in patients attending the university dental restorative clinics.
MethodsA total of 318 restorations which needed to be replaced were clinically and radiographically evaluated in a period of nine months. The frequencies of reasons for replacing posterior amalgam and resin composite restorations were calculated; secondary caries, restoration/tooth fracture, marginal discoloration/ditching, proximal overhang/open margin, loss of anatomy, pain/sensitivity, and esthetics.
ResultsThe sample population comprised of 191 females and 106 males. The majority of the sample population fell in the age group of 40-50 years (n=110). 318 restorations (n=318) were examined in this study. 82% of examined teeth were restored with amalgam (n=261), while posterior composite restorations comprised 18% of the examined teeth (n=57). Among all restorations demanded to be replaced by the patients (n=318), aesthetic need was the most common reason (n=98), followed by Ditching or discoloration (n=64), secondary caries (n=57), and fracture (n=44). Loss of anatomy was the least common cause to replace both amalgam and resin composite restorations (n=5). The different reasons of failure were all significant between amalgam and resin composite restorations as shown in (Figure 1) (p<0.005). The most common reason for amalgam replacement was aesthetic. The most common reason for composite replacement was secondary caries and marginal ditching.
Conclusionboth amalgam and composite had different reasons for replacement. Amalgam had lesser risk of developing secondary caries and higher longevity than composite.
Keywordsresin composite
amalgam
recurrent caries
fracture
aesthetics
© 2023 Published by Elsevier B.V. on behalf of King Saud University.
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