There isn't one version/mix of composite/plastic. I know this because when I was younger, I got a filling and it got wrecked quite quickly. They then said they'

There isn't one version/mix of composite/plastic. I know this because when I was younger, I got a filling and it got wrecked quite quickly. They then said they'd use a different mix but it was the last resort. I forgot the pros and cons. But I can say that approx 20 years later, my filling got replaced and the dentist (a different one, for sure) said 'this stuff breaks so quickly'.