A. Absolute.

1. Central Haemangioma. May cause uncontrolled bleeding.
2. A-V malformation.

B. Relative. When some precautions have to be taken.

1. Local

1. Acute cellulitis.
2. ANUG.

2. Systemic

3. Uncontrolled Diabetes Mellitus, Hypertension.
4. Bleeding disorders.
5. Cardiovascular diseases.
6. Liver disorders.
7. Patients on long-term steroid therapy.
8. Teeth that have undergone radiation [6 months – 1 yr ].