I have ruptured dental abscess, do i need further treatment?

Yup: The abscess did not go away, just the symptom. You will need to see a local dentist to determine the cause of the abscess... Only then can treatment be rendered. It will return without care.

Yes you do!: You need to discover why you had an abscess. Was it a periodontal and/or endodontal abscess and what was the cause? While it has "ruptured" and presumably drained, you still have an infection that caused its appearance, and this must be treated. Treatments include antibiotic therapy, a root canal treatment, a thorough cleaning (scaling and curettage) or even tooth removal. Contact your dds asap.

Draining abcess: You are probably describing a draining abscess. If that is the case, you need to treat the infection, and, the sooner the better. The infection did not go away-- it simply found a place to drain. Consult with a dentist immediately.