Question

from poem - oh, i wish i'd looked after me teeth
and i gaze up his nose in despair,
and his drill it do whine,
in these molars of mine.
Q- who does 'his' refers to ?

Answer 1

his refers to the doctor who is going to drill in molars of poet as there is cavity in poet's molars

Answer 2

'His' refers to the doctor who was treating the poet. He had cavity in his teeth and so the doctor had come to check and who was drilling the molars of the poet.....