Evaluation of Computer-controlled Local Anesthesia in Children - a Clinical Trial

The goal of this clinical trial is to learn if Computer Controlled Local Anesthetic Delivery (CCLAD) results in lower pain during local anesthesia administration for infiltration in the buccal region of the upper jaw in patients between 6 and 16 years old who will receive a dental treatment. The main questions it aims to answer are: * Does CCLAD result in lower self-reported pain (Visual Analogue Scale (VAS) and Face Pain Scale-Revised (FPS-R)) for patients between 6 and 16 years old who need local anesthesia in the upper jaw for a dental treatment? * Does CCLADD result in lower observed pain (Sound Eye Motor Scale (SEM)) for patients between 6 and 16 years old who need local anesthesia in the upper jaw for a dental treatment? * Does CCLAD result in lower hearth rate (HR) and galvanic skin response (GSR) for patients between 6 and 16 years old who need local anesthesia in the upper jaw for a dental treatment? Researchers will compare CCLAD (Dentapen, Septodont, France) to conventional local anesthesia infiltration with a metallic syringe to see if the infiltration is less painful in patients between 6 and 16 years old who will receive a dental treatment. Participants will receive local anesthesia either with the Dentapen or metallic syringe. * GSR and heart rate are measured before anesthesia, during needle insertion, at 0.3 - 0.6 - 0.9ml, and after anesthesia. * Post-injection, the child provides VAS scores (if 8 years or older) and FPS-R (all patients). * A researcher not administering the injection determines the SEM score.