Comparative evaluation of depth of penetration of root canal irrigant after using manual, passive ultrasonic, and diode laser–assisted irrigant activation technique

Abstract

AIM: The aim of this study was to compare and evaluate the penetration depth of irrigant after using manual, passive ultrasonic, and diode laser–assisted irrigant activation technique. Materials and Methods: Ninety extracted single-rooted human mandibular premolars were selected ( N = 90). Teeth were decoronated and working length was standardized for 12 mm. Root canals were shaped using ProTaper Universal F3. Saline was used as an irrigant in between every successful instrumentation. After completion of chemomechanical preparation, root canals were filled with Rhodamine-B-labeled sodium hypochlorite (3%). Teeth samples were divided into three experimental groups. In Group 1 ( n = 30), manual irrigant activation was performed for 30 seconds with master cone gutta-percha (F3) in gentle up and down motion. In Group 2 ( n = 30), ultrasonic irrigant activation was performed using passive ultrasonic endo tips for 30 seconds. In Group 3 ( n = 30), laser activation was performed using diode laser for 30 seconds with 200-µm tips. Transverse sections were made at 2, 5, and 8 mm from the root apex and were observed under confocal laser scanning microscopy. Maximum penetration depth of irrigant was recorded and statistically analyzed. Result: In the all three groups, coronal third (sections at 8 mm from root apex) showed the highest penetration depth of irrigant. Laser activation (Group 3) showed the highest penetration depth in all the three sections when compared with manual and passive ultrasonic irrigant activation. One-way analysis of variance and post hoc test showed there were significantly high differences among all the three groups and also at all three levels ( P < 0.05). Conclusion: Diode laser–assisted irrigant activation technique had better penetration depth in all the three aspects of root dentin.

Evaluation of Penetration Depth of Sodium Hypochlorite Into Dentinal Tubules After Passive Ultrasonic Irrigation Compared to Er;Yag Laser Activation. An In-Vitro Study

“…Significant difference was seen between apical third and both middle and coronal thirds. This was consistent with Rajakumaran et al 33 and Ghorbanzadeh et al 16 study that showed highest penetration depth with laser activated irrigant in coronal third followed by middle and apical thirds. Highest penetration depth in coronal third could be attributed to thelarge and densely packed dentinal tubules seen in the coronal thirdof the root canal followed by middle third, while narrower tubules are located more in the apical thirds, and as a result can limit the ability of irrigant penetration.…”

Evaluation of Antibacterial Efficacy of Vitex negundo Linn. extract as Root Canal Irrigant against Enterococcus faecalis and its penetration into Root Dentin: An in-vitro study

“…Higher penetration seen in coronal third and middle third levels in the present study could be because of the larger tubular size of the dentin in the coronal part of the canal and the absence of complex anatomical structures. (42) Dentinal tubules hoard the maximum bacteria and thus must be cleaned effectively and efficiently. (43) In the present study, all the four root canal irrigants, NaOCl, CHX, Vitex negundo Linn.…”

Hipoglicemia neonatal e a atuação do enfermeiro: uma revisão de literatura

“…Diante este cenário, o uso da irrigação ultrassônica passiva (PUI) tem surgido para complementar a limpeza biomecânica dos sistemas de canais radiculares, atingindo toda sua extensão. A irrigação ultrassônica passiva otimiza a ação do agente químico pela sua capacidade de cavitação e movimentação resultando no deslocamento dos detritos que impossibilitariam a ação da solução irrigadora no interior dos túbulos dentinários (Abu Rajakumaran and Ganesh 2019).…”