Use a conventional syringe to inject anesthetic solution by the inferior alveolar nerve block (IANB) technique. Also, use a conventional syringe to inject anesthetic solution by buccal infiltration (BI) technique.

Use STA Wand® (CCLA) to inject anesthetic solution by the inferior alveolar nerve block (IANB) technique. Also, use STA Wand® (CCLA) to inject anesthetic solution by buccal infiltration (BI) technique.

Use a Star Pen device to inject anesthetic solution by the inferior alveolar nerve block (IANB) technique. Also, use a Star Pen device to inject anesthetic solution by buccal infiltration (BI) technique.

Dental local anesthesia injection is given by conventional syringe by two injection methods inferior alveolar nerve block and buccal infiltration.

The primary outcome was evaluated using Wong-Baker FACES Pain Rating scale. The child was briefly explained about each face and then asked to select the face that best described their feelings during the administration of local anesthesia. The scale consists of 6 cartoon faces depicting varying facial expressions, ranging from a very happy face (score 0) to a very sad one (score 10).

The primary outcome was evaluated using Sounds, eyes, and motor (SEM) scale. These responses are categorized on a scale ranging from 1-4 categories comfort, mild discomfort, moderately painful, and painful. Two pediatric dentists who are blind to injection devises will conduct the clinical evaluation. A third examiner will be consulted if there is a disagreement between the results of the first two.