From the research I've been doing it seems that the upside to dental bridges is that it preserves the spacing of the teeth and is only moderately expensive and is usually covered by dental insurance,unlike implants which are expensive and rarely covered.
The downside is that the two teeth used to support the bridge have to be ground down and crowned.
It sounds to me like you can clean under the bridge, but it takes a bit more effort and sometimes a special brush and floss.
I'd never heard of biological dentistry until a few days ago, but after days of researching this I'm switching to one. Perhaps this is worth considering for yourself.
Hope that helps.