Study: NCT05361278

Intervention type: OTHER
Group type: EXPERIMENTAL
Intervention: Chlorhexidine solution
Description: * Irrigate the root canal with 1 ml of 2% CHx solution between each file 1 mm from the apical foramen by using a 27-gauge irrigation needle.~* Irrigate the root canal with 3 ml of the solution after using the last file.~* Irrigation with 3 ml of 0.5% Tween 80 and 0.07 % lecithin to remove residual chlorhexidine solution.~* Drying the canal with paper points (placing a 20 size paper point for 60 seconds in each canal) to take the bacterial smear.~* Follow-up of endodontic treatment procedures for the treated tooth.

Intervention type: OTHER
Group type: EXPERIMENTAL
Intervention: Activated chlorhexidine solution
Description: * Irrigate the root canal with 1 ml of 2% CHx solution between each file 1 mm from the apical foramen by using a 27-gauge irrigation needle with activation using an ultrasonic irrigation head.~* Irrigate the root canal with 3 ml of the solution after using the last file with activation using an ultrasonic irrigation head.~* Irrigation with 3 ml of 0.5% Tween 80 and 0.07 % lecithin to remove residual chlorhexidine solution.~* Drying the canal with paper points (placing a 20 size paper point for 60 seconds in each canal) to take the bacterial smear.~* Follow-up of endodontic treatment procedures for the treated tooth.

Intervention type: OTHER
Group type: EXPERIMENTAL
Intervention: Chlorhexidine gel
Description: * Irrigate the root canal with 1 ml of 2% CHx gel between each file 1 mm from the apical foramen by using a 27-gauge irrigation needle.~* Irrigate the root canal with 3 ml of the gel after using the last file.~* Irrigation with 3 ml of 0.5% Tween 80 and 0.07 % lecithin to remove residual chlorhexidine gel.~* Drying the canal with paper points (placing a 20 size paper point for 60 seconds in each canal) to take the bacterial smear.~* Follow-up of endodontic treatment procedures for the treated tooth.

Intervention type: OTHER
Group type: EXPERIMENTAL
Intervention: Activated chlorhexidine gel
Description: * Irrigate the root canal with 1 ml of 2% CHx gel between each file 1 mm from the apical foramen by using a 27-gauge irrigation needle with activation using an ultrasonic irrigation head.~* Irrigate the root canal with 3 ml of the gel after using the last file with activation using an ultrasonic irrigation head.~* Irrigation with 3 ml of 0.5% Tween 80 and 0.07 % lecithin to remove residual chlorhexidine gel.~* Drying the canal with paper points (placing a 20 size paper point for 60 seconds in each canal) to take the bacterial smear.~* Follow-up of endodontic treatment procedures for the treated tooth.

Intervention type: OTHER
Group type: OTHER
Intervention: Sodium hypochlorite solution
Description: * Irrigate the root canal with 1 ml of 5.25% sodium hypochlorite solution between each file 1 mm from the apical foramen by using a 27-gauge irrigation needle.~* Irrigate the root canal with 3 ml of the solution after using the last file.~* Irrigating the canal with 3 ml of 5% sodium thiosulfate solution to remove residual of sodium hypochlorite.~* Drying the canal with paper points (placing a 20 size paper point for 60 seconds in each canal) to take the bacterial smear.~* Follow-up of endodontic treatment procedures for the treated tooth.