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Table 1 Characteristics of the study groups according to the operator

From: Pain perception following computer-controlled versus conventional dental anesthesia: randomized controlled trial

Study groups

Student-administered

Dentist-administered

Operator

Students (n = 31)

Dentist (n = 1)

Subjects

Students (n = 31)

Students (n = 29)

Injection Techniques

Supraperiosteal Infiltration (first right premolar) (n = 31)

Inferior Alveolar Nerve Block (right side) (n = 31)

Supraperiosteal Infiltration (first right and left premolar) (n = 58)

Inferior Alveolar Nerve Block (n = 0)

Injection Methods

Computer-controlled (n = 31):16 IAN-B and 15 Infiltration

Conventional (n = 31):15 IAN-B and 16 Infiltration

Computer-controlled (n = 29)

Conventional (n = 29)

Randomization

The injection methods were simply randomized between the two injection techniques

(even: computer-controlled /odd: conventional)

The injection methods were simply randomized between the right and left injection sites

(even: computer-controlled /odd: conventional)

Blinding

The students were blinded to the injection methods

The students were blinded to the injection methods

Split-mouth

Yes

No