Micro-CT evaluation of four final irrigation protocols on hard-tissue debris removal from mesial roots of mandibular molars containing isthmus

Araujo, Bianca de Mattos de Marques; Cruz, Alessandra Timponi Goes; Piasecki, Lucila; Webber, Mariel; Carneiro, Everdan; Westphalen, Vânia Portela Ditzel; Neto, Ulisses Xavier da Silva

doi:10.1007/s00784-022-04561-3

Cited by 11 publications

(4 citation statements)

References 20 publications

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“…Supplementary irrigation techniques such as sonic, passive ultrasonic, and negative apical pressure should be used to obtain clean canals. These techniques resulted in better debris removal than conventional techniques ( de Mattos de Araujo et al, 2022 , Kumar et al, 2023 ). Recent developments in equipment based on the concept of Photoactivated disinfection, photon-induced photoacoustic streaming, gentle wave system, etc., are significant milestones in the irrigation of root canals.…”

Section: Resultsmentioning

confidence: 97%

“…Most MMCs are narrow, tortuous, curved, or joined to one of the primary root canals; therefore, these canals must be cleaned and shaped meticulously to avoid procedural errors ( de Mattos et al, 2022 ). A proper glide path preparation, the right selection of rotary files, and a proper technique would efficiently clean and shape without procedural errors ( Ajina et al, 2022 , Chaniotis and Ordinola-Zapata, 2022 , Patil et al, 2017 ).…”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Middle mesial canal in mandibular first molar: A narrative review

Penukonda

Pattar

Nambiar

et al. 2023

The Saudi Dental Journal

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Section: Resultsmentioning

confidence: 97%

Section: Resultsmentioning

confidence: 99%

Middle mesial canal in mandibular first molar: A narrative review

Penukonda

Pattar

Nambiar

et al. 2023

The Saudi Dental Journal

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“…In addition, the frequency of secondary oscillation, which results from the reflex of insert vibration due to the physical contact with the hard tissue, is dependent on file stiffness 19 : the stiffer the ultrasonic insert, the faster it may return to the canal wall during oscillation 19 , 20 . Thin and flexible inserts can also be used to mechanically activate the irrigants in root canals with an acute angle of curvature because they can reach further into the apical, such as Easy Clean (EC) (Easy Equipamentos Odontológicos, Belo Horizonte, Brazil) 10 , XP-Endo Finisher (XPF) (FKG, La Chaus-de Fonds, Switzerland) 21 , or Eddy (VDW, Munich, Germany), which may be also safer for similar cases 10 . Despite this, the effectiveness of these devices regarding root canal cleaning is still controversial when compared to ultrasonic agitation, and most of them did not assess uncontrolled wear on the canal wall 22 .…”

Section: Discussionmentioning

confidence: 99%

Root canal curvature influences uncontrolled removal of dentin and cleaning efficacy after ultrasonic activation

Paiva,

Iglecias,

Freire

et al. 2024

Braz. Dent. J.

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This study evaluated the correlation between root canal curvature and the effects of ultrasonic irrigation in the following parameters: volume of uncontrolled dentin removal (UDRVol), maximum depth of dentin defects, removal of accumulated hard tissue debris (AHTD), and canal transportation in prepared curved root canals. Twenty-four human permanent mandibular molars were divided into two groups according to root canal curvature: moderate curvature (MC: mean 25°); and severe curvature (SC: mean 48°). The specimens were scanned using an X-ray microcomputed scanner (Skyscan 1172) before and after cleaning and shaping and after the final irrigation protocol with ultrasonic irrigation. There was a moderate correlation between the degree of root canal curvature and the volume of remaining AHTD (p<0.05) and between the degree of root canal curvature and maximum depth of defects due to uncontrolled removal of dentin (p<0.05). The teeth in the SC group had a greater maximum depth of defects on the dentin wall in the apical third than the teeth in the MC group (p <0.05). Both groups had a significant reduction of AHTD in all canal thirds, but the amount of remaining AHTD in the middle and apical thirds and the whole canal was significantly greater in the SC than in the MC group (p <0.05). Canal transportation was not influenced by the canal curvature in all thirds (p >0.05). This study concluded that root canal curvature affects significantly the uncontrolled removal of dentin and remaining AHTD volume after the final irrigation protocol with ultrasonic irrigation.

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“…Several studies demonstrated that mechanical instrumentation alone is unsuccessful in completely removing the remaining bacteria and smear layer [2,5,8]. Irrigation plays a crucial role during endodontic treatment as it removes the smear layer and bacteria and decontaminates the surfaces of the root canal system, even when involving anatomical complexities [23,39]. Several protocols and systems have been introduced that combine irrigating solutions and activation methods in order to achieve satisfactory disinfection.…”

Section: Discussionmentioning

confidence: 99%

Evaluation of the Efficacy of Different Irrigation Systems on the Removal of Root Canal Smear Layer: A Scanning Electron Microscopic Study

et al. 2022

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Irrigation represents a crucial step in endodontics for bacteria disinfection and smear layer removal. Several irrigation strategies have been proposed, although their effects are controversial. This study aims to assess the comparison of four different irrigation systems on the smear layer removal utilizing scanning electron microscopy (SEM). Forty sound monoradicular teeth were collected and casually allocated into four groups (n = 10): Group A, conventional irrigation; Group B, IrriFlex irrigation; Group C, ultrasonic irrigation system; Group D, apical negative pressure irrigation. After chemo-mechanical preparation and longitudinal root separation, the three root thirds were analyzed by SEM. Micrographs were carried out at ×2000 to analyze the smear layer residual in each third of the root canal. Statistically significant differences were found between Group A and Group D (p < 0.05). Groups B and C showed satisfactory results in the coronal and middle thirds, while Group D was the only system that achieved satisfactory results in the apical third. However, the complete smear layer removal in the root canal was never achieved with any of the four systems tested. In conclusion, among the four tested irrigation systems, the greatest efficacy on smear layer removal was reached by Group D.

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Micro-CT evaluation of four final irrigation protocols on hard-tissue debris removal from mesial roots of mandibular molars containing isthmus

Cited by 11 publications

References 20 publications

Middle mesial canal in mandibular first molar: A narrative review

Middle mesial canal in mandibular first molar: A narrative review

Root canal curvature influences uncontrolled removal of dentin and cleaning efficacy after ultrasonic activation

Evaluation of the Efficacy of Different Irrigation Systems on the Removal of Root Canal Smear Layer: A Scanning Electron Microscopic Study

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