Dear practo user Consult specialist dentist for definite diagnosis and treatment planning.

Lower last molar position not upright. Its horizontaly placed and not erupted completely. Because of its position food  lodgement between last teeth and adjacent tooth. This x ray shows both tooth decayed and second molar this decay enter into tooth nerve. Also right upper 2premolars deep decayed

Consult an oral medicine specialist

Right upper 2 premolars are decayed. Right lower wisdom tooth needs to be removed or else atleast get right lower 2nd molar(decayed) restored asap.

You have all 4 wisdom teeth and I would advise you get the right ones - both upper and lower extracted. The lower right wisdom tooth because of its position is decayed and also caused deep decay in the next tooth. It is only a matter of time before you start having pain in that region. Once the lower is removed you should remove the upper to avoid it from growing downwards later. Also I see decay in atleast 3-4 other teeth as well.