when caries reaches the pulp of the tooth, it has to be removed and replaced with a material. In this study im examining the clinical and radiographic signs and symptoms after using different natural materials in pulpotomized molars and compared to the formocresol.

Patients who have irreversible pulpitis and need pulpotomy will be selected randomly from the out patient clinic. they will be assigned randomly to different study and control groups. pulpotomy will be performed in the second primary molar and 1 of the five materials will be put in the pulp chamber (aloe vera, nigella sativa, thymus vulgaris, turmeric and formocresol). It will be covered with a restoration and a stainless steel crown. Patients follow up will be done after 1,3,6 and 12 months to assess clinical and radiographic signs and symptoms.

Inclusion Criteria:

• Patients aged from 4 to 7 years old
• Patients who are medically free
• Patients who have a restorable vital deep carious primary molar which is indicated for pulpotomy.
• No clinical signs or symptoms as pain on percussion, tooth mobility, presence of sinus or fistula, history of swelling.
• No radiographic signs of any periapical pathosis or signs of internal or external root resorption.

Exclusion Criteria:

• Patients who have any medical condition.
• Teeth that are badly broken down, that cannot be restored.
• Presence of uncontrolled bleeding.
• Clinical evidence of non-vitality such as presence of an abscess or a sinus or premature mobility.
• Radiographic evidence of bone resorption, internal or external root resorption and periapical or interradicular radiolucency.