The study will be self-funded by investigator and carried out on patients from outpatient clinic in Pediatric Dentistry and Public Health Department- Faculty of Dentistry, Cairo University- Egypt. The procedures will be carried out by postgraduate student Rawda Nader Fathy who has B.D.S. (2011) -Alexandria University- Egypt. The procedures will be carried out on a Knight Midmark Biltmore dental unit (Midmark Corporation 1700 S. Patterson Blvd. Suite 400 Dayton, Ohio 45409, USA) in the post graduate clinic of Pediatric Dentistry and Public Health Department- Faculty of Dentistry, Cairo University- Egypt.

Inclusion Criteria:

1. Cooperative patient
2. Healthy 5-8 years old patient with at least one carious primary molar tooth at each side of the patient's mouth.
3. Presence of at least two-thirds of the root length radiographically.
4. Restorable tooth.
5. No signs of hyperemia and hemostasis will be adequately achieved with moistened cotton pellet within 5 minutes after coronal pulp amputation.

Exclusion Criteria:

1. Teeth showing clinical and radiographic evidence of pulp degeneration such as history of spontaneous or nocturnal pain, tenderness to percussion or palpation, pathologic mobility, swelling or fistulous tract, periodontal ligament (PDL) space widening, internal root resorption, external root resorption, furcal radiolucency/inter- radicular bone destruction and/or periapical bone destruction.
2. Patients eliciting history of known allergy to pollens associated with propolis.
3. Parent or guardian refusal to participate.

data will be available within 9 months completion of study

data Access will be reviewed by external independent review panel