After clearing dust at home I sneezed and got cold with running nose and cough after sometime and my root canaled lower molar tooth( Capped 6 years back ) )started paining. Dentists say it is due to infection in tooth but no x ray was taken . My gums are not swollen and reddishThis is my third attack But I am sure that is due to sinus ! While browsing the net I got the information that lower teeth also get affected due to sinus in some cases. I have been taking Amox 500 mg and pain killer for almost 10 days . I also consulted ENT doctor but the recovery is not fast though there is some improvement I also take ketoral DT 10 mg. I strongly believe that it is due to sinusitis as I get pain near my ear . after some improvement I again exposed myself unwittingly to dust and the symptoms re appeared But Now I have no running nose. I get this trouble only when I get cold attack Kindly advise what to do next