Micro‐CT study on the removal of accumulated hard‐tissue debris from the root canal system of mandibular molars when using a novel laser‐activated irrigation approach

The success of endodontic treatment depends on many factors. The most important of them are the knowledge and manual skills of the dentist.Materials and methods. We analyzed the condition of teeth after endodontic treatment in 300 patients aged 20 to 70 years. Were studied 300 images of CBCT, the number of treated teeth and the number of cases of unsuccessful endodontic treatment was analyzed.Results. According to CBCT data, high-quality obturation of the root canal system was observed in 1335 (75%) endodontically treated teeth. The reasons for successful endodontic treatment are under-sealing of the root canal (16%), removal of material beyond the apex (5.6%), and missed root canals (3.4%).Conclusion. Clinical dental patient examination revealed that maxillary and mandibular molars most often undergo endodontic treatment.

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Debris Removal from the Mesial Root Canal System of Mandibular Molars with Laser-activated Irrigation

Journal of Endodontics ◽

10.1016/j.joen.2018.06.007 ◽

2018 ◽

Vol 44 (11) ◽

pp. 1697-1701 ◽

Cited By ~ 7

Author(s):

Stamatina Passalidou ◽

Filip Calberson ◽

Mieke De Bruyne ◽

Roeland De Moor ◽

Maarten August Meire

Keyword(s):

Root Canal ◽

Canal System ◽

Mandibular Molars ◽

Debris Removal ◽

Root Canal System

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Micro-CT evaluation of sonically and ultrasonically activated irrigation on the removal of hard-tissue debris from isthmus-containing mesial root canal systems of mandibular molars

International Endodontic Journal ◽

10.1111/iej.13100 ◽

2019 ◽

Vol 52 (8) ◽

pp. 1173-1181 ◽

Cited By ~ 6

Author(s):

T. Rödig ◽

C. Koberg ◽

S. Baxter ◽

F. Konietschke ◽

A. Wiegand ◽

...

Keyword(s):

Root Canal ◽

Micro Ct ◽

Hard Tissue ◽

Mandibular Molars ◽

Ct Evaluation ◽

Canal Systems

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Complete Obturation—Cold Lateral Condensation vs. Thermoplastic Techniques: A Systematic Review of Micro-CT Studies

Materials ◽

10.3390/ma14144013 ◽

2021 ◽

Vol 14 (14) ◽

pp. 4013

Author(s):

Shilpa Bhandi ◽

Mohammed Mashyakhy ◽

Abdulaziz S. Abumelha ◽

Mazen F. Alkahtany ◽

Mohamed Jamal ◽

...

Keyword(s):

Root Canal ◽

Risk Of Bias ◽

Micro Ct ◽

Canal System ◽

Gutta Percha ◽

Hermetic Seal ◽

Root Canal System ◽

Time Restriction ◽

Selection Of ◽

Ct Studies

To prevent re-infection and provide a hermetic seal of the root canal system, an endodontist must aim to produce a void-free obturation. This review aimed to compare the completeness of root canal obturation between the two most prevalent methods—cold lateral condensation and warm gutta-percha techniques—using micro-CT (PROSPERO reg no. 249815). Materials and Methods: A search of Scopus, Embase, PubMed (Medline via PubMed), and Web of Science databases was done without any time restriction according to the PRISMA protocol. Articles that compared both techniques and were published in English were included. Data was extracted and the risk of bias was assessed using an adapted tool based on previous studies. Results: A total of 141 studies were identified by the search. Following the screening and selection of articles, 9 studies were included for review. Data was extracted manually and tabulated. Most studies had a moderate risk of bias. None determined operator skill in both methods before comparison. The data extracted from the included studies suggests that both techniques produce voids in the obturation. The thermoplasticized gutta-percha techniques may result in fewer voids compared to cold lateral condensation. Conclusion: Considering the limitations of the included studies, it was concluded that neither technique could completely obturate the root canal. Thermoplasticized gutta-percha techniques showed better outcomes despite a possible learning bias in favor of cold lateral condensation. Establishing operator skills before comparison may help reduce this bias.

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C-SHAPED CANALS IN MANDIBULAR SECOND MOLARS: A CASE SERIES

10.36106/ijsr/7519920 ◽

2021 ◽

pp. 74-75

Author(s):

Ghosh S ◽

Uke M

Keyword(s):

Root Canal ◽

Case Series ◽

Canal System ◽

Second Molar ◽

Mandibular Molars ◽

Mandibular Second Molar ◽

Root Canal System

The mandibular molars are more prone to aberrations of canals. They include bifurcation and trifurcation of canals, fusion of roots, extreme canal curvatures and c-shaped canals which makes it difcult to diagnose and manage. The failure to treat them leads to re-infection and persistence of infection in the tooth. Hence, it is of utmost importance for the clinician to know the morphologic variations. The present case series aims to give a clinical insight of such aberrations. The ten cases presents with mandibular second molar with “c” shaped root canal system, which was diagnosed with Radiovisiography. The cases were treated endodontically and successfully managed

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Comparative Analysis of Ease of Removal of Fractured NiTi Endodontic Rotary Files from the Root Canal System—An In Vitro Study

International Journal of Environmental Research and Public Health ◽

10.3390/ijerph19020718 ◽

2022 ◽

Vol 19 (2) ◽

pp. 718

Author(s):

Vicente Faus-Matoses ◽

Eva Burgos Ibáñez ◽

Vicente Faus-Llácer ◽

Celia Ruiz-Sánchez ◽

Álvaro Zubizarreta-Macho ◽

...

Keyword(s):

Root Canal ◽

Study Groups ◽

Wilcoxon Test ◽

Ct Scans ◽

Micro Ct ◽

Micro Computed Tomography ◽

Canal System ◽

The Us ◽

Canal Systems ◽

Root Canal System

This study aimed at analyzing and comparing the ease of removal of fractured nickel–titanium (NiTi) endodontic rotary files from the root canal system between the ultrasonic tips and the Endo Rescue appliance removal systems, as well as comparing the volume of dentin removed between ultrasonic tips and the Endo Rescue appliance using a micro-computed tomography (micro-CT) scan. Material and Methods: Forty NiTi endodontic rotary files were intentionally fractured in 40 root canal systems of 20 lower first molar teeth and distributed into the following study groups: A: Ultrasonic tips (n = 20) (US) and B: Endo Rescue device (n = 20) (ER). Preoperative and postoperative micro-CT scans were uploaded into image processing software to analyze the volumetric variations of dentin using an algorithm that enables progressive differentiation between neighboring pixels after defining and segmenting the fractured NiTi endodontic rotary files and the root canal systems in both micro-CT scans. A non-parametric Mann–Whitney–Wilcoxon test or t-test for independent samples was used to analyze the results. Results: The US and ES study groups saw 8 (1 mesiobuccal and 7 distal root canal system) and 3 (distal root canal system) fractured NiTi endodontic rotary files removed, respectively. No statistically significant differences were found in the amount of dentin removed between the US and ER study groups at the mesiobuccal (p = 0.9109) and distal root canal system (p = 0.8669). Conclusions: Ultrasonic tips enable greater ease of removal of NiTi endodontic rotary files from the root canal system, with similar amounts of dentin removal between the two methods.

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