The purpose of this clinical trial was to compare two methods of delivering local dental anesthesia in undergraduate dental students: a computer-controlled local anesthetic delivery (CCLAD) system and a conventional dental syringe. The study evaluated whether the computer-controlled system reduced pain during the administration of local anesthesia compared with the conventional technique.
The main questions this study aimed to answer were:
Does a computer-controlled local anesthetic delivery system reduce pain during maxillary buccal infiltration compared with a conventional dental syringe? Are there differences in physiological responses (blood pressure, heart rate, and oxygen saturation) between the two anesthetic delivery methods? Which anesthetic delivery method do participants prefer after experiencing both techniques? Would participants recommend their preferred anesthetic delivery method to others? Participants attended two study visits approximately one week apart. Each participant received local anesthesia using both delivery methods in a randomized order, serving as his or her own control. Pain, dental anxiety, physiological parameters, anesthetic delivery preferences, and willingness to recommend the preferred method were assessed during the study.
Inclusion Criteria:
Exclusion Criteria:
The investigator responsible for assessing participant-reported outcomes (pain perception, preferred anesthetic delivery method, and willingness to recommend the preferred method) remained blinded to treatment allocation throughout the study. Participants and the care provider administering the interventions were not blinded because of the nature of the interventions. The investigator recording physiological measurements became aware of the allocated intervention during anesthetic administration because the delivery device was visible.
Participants received maxillary buccal infiltration anesthesia using a computer-controlled local anesthetic delivery (CCLAD) system during one of two study periods according to the randomized treatment sequence. Each participant received both study interventions and served as his or her own control.
Participants received maxillary buccal infiltration anesthesia using a conventional aspirating dental syringe during one of two study periods according to the randomized treatment sequence. Each participant received both study interventions and served as his or her own control.
Montemorelos, Nuevo León 67530, Mexico
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