What is the treatment for the patients who need emergency dental care for getting relief from tooth pain?
Dental treatment Depends on source and intensity of pain.
If tooth is decayed along with pain then most probably RCT is required and in severe cases extraction may be the only option
Does health insurance cover dental care?
Medical and dental benefits are separate where I am (Ontario, Canada). Really inclusive dental plans are cheaply available through work though, and there are social plans to provide basic and emergency dental care to people living on low income or social assistance, though many do fall through the cracks.
Dental clinics vary widely in cost and type of services offered. Some are glossy, ultra modern smile reconstruction facilities and others are neighborhood clinics with bins of toys and lollies (sugar free!) for kids.