Restorative Dentistry & Endodontics

Research Articles

In vitro apical pressure created by 2 irrigation needles and a multisonic system in mandibular molars: Ronald Ordinola-Zapata, Joseph T. Crepps, Ana Arias, Fei Lin; Restor Dent Endod 2021;46(1):e14. Published online February 8, 2021; DOI: https://doi.org/10.5395/rde.2021.46.e14

Objectives

The aim of this study was to evaluate the apical pressure generated by 2 endodontic irrigation needles and the GentleWave system in mandibular molars.

Materials and Methods

The mesial and distal root canals of 12 mandibular molars were irrigated with a 30-gauge close-end needle or with a 30-gauge open-end needle. Procedures were performed in the mesial and distal canals. The GentleWave procedure and irrigation at 1 mm from the apex in the distal roots using an open-end needle were used, respectively, as negative and positive controls. The apical pressure was measured using a data acquisition pressure setup. Apical pressure exerted by the different needles in the 2 different canal types was statistically compared using 2-way analysis of variance.

Results

Significant differences were found in the apical pressure for both needles and the canal type. The lowest values were obtained with close-end needles and in mesial canals. Negative apical pressure values were obtained using GentleWave.

Conclusions

The needle and the canal type influenced the apical pressure. The GentleWave procedure produced negative apical pressure.

Citations

Citations to this article as recorded by

Use of the gentlewave system in endodonticsUse of the gentlewave system in endodontics
Daiana Jacobi Lazzarotto, Mayara Colpo Prado, Lara Dotto, Rafael Sarkis-Onofre
Brazilian Journal of Oral Sciences.2025; 24: e254250. CrossRef
The effect of ultrasonic and multisonic irrigation on root canal microbial communities: An ex vivo study
Ki Hong Park, Ronald Ordinola‐Zapata, W. Craig Noblett, Bruno P. Lima, Christopher Staley
International Endodontic Journal.2024; 57(7): 895. CrossRef
Efficacy of the GentleWave System in the removal of biofilm from the mesial roots of mandibular molars before and after minimal instrumentation: An ex vivo study
Kwang Ho Kim, Céline Lévesque, Gevik Malkhassian, Bettina Basrani
International Endodontic Journal.2024; 57(7): 922. CrossRef
A critical analysis of research methods and experimental models to study irrigants and irrigation systems
Christos Boutsioukis, Maria Teresa Arias‐Moliz, Luis E. Chávez de Paz
International Endodontic Journal.2022; 55(S2): 295. CrossRef
Outcomes of the GentleWave system on root canal treatment: a narrative review
Hernán Coaguila-Llerena, Eduarda Gaeta, Gisele Faria
Restorative Dentistry & Endodontics.2022;[Epub] CrossRef

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Influence of size and insertion depth of irrigation needle on debris extrusion and sealer penetration: Emel Uzunoglu-Özyürek, Hakan Karaaslan, Sevinç Aktemur Türker, Bahar Özçelik; Restor Dent Endod 2018;43(1):e2. Published online December 22, 2017; DOI: https://doi.org/10.5395/rde.2018.43.e2

Abstract PDF PubReader ePub

Objectives

To determine the effect of size and insertion depth of irrigation needle on the amount of apical extruded debris and the amount of penetration depth of sealer using a confocal laser scanning microscope (CLSM).

Materials and Methods

Twenty maxillary premolars were assigned to 2 groups (n = 10), according to the size of needle tip, 28 G or 30 G. Buccal roots of samples were irrigated with respective needle type inserted 1 mm short of the working length (WL), while palatal roots were irrigated with respective needle type inserted 3 mm short of the WL. Prepared teeth were removed from the pre-weighed Eppendorf tubes. Canals were filled with F3 gutta-percha cone and rhodamine B dye-labeled AH 26 sealer. Teeth were transversally sectioned at 1 and 3 mm levels from the apex and observed under a CLSM. Eppendorf tubes were incubated to evaporate the irrigant and were weighed again. The difference between pre- and post-weights was calculated, and statistical evaluation was performed.

Results

Inserting needles closer to the apex and using needles with wider diameters were associated with significantly more debris extrusion (p < 0.05). The position of needles and level of sections had statistically significant effects on sealer penetration depth (p < 0.05 for both).

Conclusions

Following preparation, inserting narrower needles compatible with the final apical diameter of the prepared root canal at 3 mm short of WL during final irrigation might prevent debris extrusion and improve sealer penetration in the apical third.

Citations

Citations to this article as recorded by

Preliminary insights: exploring irrigation practices during endodontic treatment among general dental practitioners in Malaysia
Kai Qi Chiew, Xin Ni Lim, Shekhar Bhatia, Naveen Chhabra
British Dental Journal.2024;[Epub] CrossRef
Efficiency of diode laser in control of post-endodontic pain: a randomized controlled trial
Hend H. Ismail, Maram Obeid, Ehab Hassanien
Clinical Oral Investigations.2023; 27(6): 2797. CrossRef
Endodontic management of an aberrant germinated composite odontome: A case report
Ankit Arora, Kavina Desai, Sonali Kapoor, Seema Gajera
Australian Endodontic Journal.2023; 49(3): 684. CrossRef
Potentials of 3D-Modeling in the Preclinical Stage of Root Needle Research
Aleksandr V. Kuligin, Larisa N. Kazakova, Oksana S. Tereshchuk, Vadim V. Bokov
I.P. Pavlov Russian Medical Biological Herald.2022; 30(1): 95. CrossRef
Effect of root canal geometry and needle type on apical extrusion of irrigant: an ex vivo study
Büşra SERÇE FİKİRLİ, Bülent ALTUNKAYNAK, Güven KAYAOĞLU
Acta Odontologica Turcica.2022; 39(3): 58. CrossRef
An in vitro radiological evaluation of irrigant penetration in the root canals using three different irrigation systems: Waterpik WP-100 device, passive irrigation, and manual dynamic irrigation systems
Suragani Hemalatha, Archana Srinivasan, A Srirekha, Lekha Santhosh, C Champa, Ashwija Shetty
Journal of Conservative Dentistry.2022; 25(4): 403. CrossRef
Preparation Ability of ProTaper Next and XP-endo Shaper Instruments in Isthmus-containing Root Canal System
Mustafa Sarıkahya, Tayfun Alaçam
Conservative Dentistry and Endodontic Journal.2021; 5(2): 28. CrossRef
Penetration depth of irrigants into root dentine after sonic, ultrasonic and photoacoustic activation
K. M. Galler, V. Grubmüller, R. Schlichting, M. Widbiller, A. Eidt, C. Schuller, M. Wölflick, K.‐A. Hiller, W. Buchalla
International Endodontic Journal.2019; 52(8): 1210. CrossRef

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