Figure 1 Changes in soft-tissue anesthesia sensations with time in laser group where photobiomodulation (PBM) was performed (G1A – 635 nm and G1B – 808 nm) in comparison to control group (G2 sham laser). The results were expressed in the number of cases (No of obs) and a percentage (%) of the total patients’ number per group, NS – not significant (P>0.05); NA – P value not available. The same capital letters (A,B,C,D,E,F) indicate a significant difference between groups. The statistical analysis and graphs in this figure were produced using Statistica® Version 13.5.0 software for Windows (TIBCO Software, Inc., Palo Alto, CA) and PQStat 1.8.0.414 software (PQStat software; Poznań, Poland). No of obs – number of observations (number of patients);% of all cases; RL – lack of reaction = anesthesia; SR – return of normal sensation; NS – not significant (P>0.05); NA – P value not available (due to lack of cases in RL group); min – minutes; nm – nanometers (1.1A) After 15 min PBM with 635-nm laser in comparison to sham laser. (1.1B) After 30 min PBM with 635-nm laser in comparison to sham laser. (1.1C) After 45 min PBM with 635-nm laser in comparison to sham laser. (1.2A) After 15 min PBM with 808-nm laser in comparison to sham laser. (1.2B) After 30 min PBM with 808-nm laser in comparison to sham laser. (1.2C) After 45 minutes PBM with 808-nm laser in comparison to sham laser.