Aim of the study is to test the effect of Buzzy System (vibrating device) compared to topical anaesthesia on pain reduction during injection of infiltration anaesthesia in children.

Inclusion Criteria:

1. Children classified as cooperative or potentially cooperative according to Wright's classification of child behaviour with rating 3 (positive) or 4 (definitely positive) according to Frankl behaviour rating scale.
2. Children aged 5-8 years old.
3. Patients who need maxillary buccal infiltration anesthesia.

Exclusion Criteria:

1. Children with any neurological or psychological disorders.
2. Children with known allergy to topical or local anesthetic agents.
3. Parental refusal for participation.
4. Children with previous history of local anesthesia injection.

Both the patient and the investigator cannot be blinded due to the different techniques.