Influence of smear layer removal on the obturation of root canal ramifications

Fachin, Elaine Vianna Freitas; Scarparo, Roberta Kochenborger; Massoni, Liliane Inês Sachet

doi:10.1590/s1678-77572009000300021

Cited by 5 publications

(4 citation statements)

References 18 publications

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“…However, irrigation with EDTA was shown to have no effect on the filling quality of root canal ramifications in several studies (20)(21)(22). In the present study, after the lateral canals were drilled, smear layer was created in order to mimic the clinical conditions and smear layer was not removed.…”

Section: Discussionmentioning

confidence: 77%

Effect of Six Obturation Techniques on Filling of Lateral Canals

Gençoğlu¹,

Helvacıoḡlu²,

Gundogar³

2014

DENT

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Lateral canals establish connection between the main root canal and periodontal ligament. The necrotic tissues and bacteria residing in the lateral canals are difficult to remove by mechanical and chemical cleaning and this influences filling the root canal efficiently and the outcome of the root canal therapy. The aim of this study was to evaluate the filling of artificially prepared lateral canals using six different gutta-percha obturation techniques. For this study, sixty extracted human single rooted teeth were used. Root canals were cleaned and shaped by step back technique. Six lateral canals were prepared in the coronal, middle and apical thirds in each root using #15 engine driven reamer. The teeth were randomly divided into six groups of 10

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Section: Discussionmentioning

confidence: 77%

Effect of Six Obturation Techniques on Filling of Lateral Canals

Gençoğlu¹,

Helvacıoḡlu²,

Gundogar³

2014

DENT

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“…The effect of the smear layer on the filling of lateral canals by sealer or gutta-percha has been examined in only a few studies. In a study by Fachin et al (64), eighty teeth were instrumented and irrigated either with NaOCl only or with NaOCl and EDTA and root-filled using cold lateral condensation. No statistically significant difference between the two groups was found in the number of lateral canals filled, which may indicate that lateral canals are so large that they are not covered (blocked) by the smear layer.…”

Section: Effect Of Irrigation In Lateral Canalsmentioning

confidence: 99%

Irrigation: beyond the smear layer

Haapasalo¹,

Qian²,

Shen³

2012

Endodontic Topics

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Traditionally, much of the attention placed on irrigation in endodontics has focused on smear layer removal. While the smear layer continues to be a relevant topic, other areas related to irrigation and irrigants have emerged that also require a more in‐depth analysis and understanding. This review starts with the smear layer, partially from a new angle, and expands into other topics such as uninstrumented root canal areas, and effect of irrigation in lateral canals and dentin canals. Advanced microbiological models for irrigation research will be presented and discussed. The effect of sodium hypochlorite and decalcifying solutions on dentin structure and dentin strength has become an important topic, which is related to the possible harmful effects of irrigation such as dentin erosion and even vertical root fracture. The impact of irrigant sequence and time of exposure will also be discussed, and recommendations for irrigation protocols will be made.

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“…After root canal instrumentation, the dentin debris and smear layer cover the canal lumen [8]. The smear layer weakens the seal of the canal filling by blocking the dentinal tubules and preventing penetration of sealers and disinfectants [9], [10].…”

Section: Introductionmentioning

confidence: 99%

Smear Layer Removal by 1% Phytic Acid after Root Canal Preparation with Three Different Rotary Systems

Soliman

Rabie

Hassan³

2022

Open Access Maced J Med Sci

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AIM: This study compared the removal of the smear layer using 1% phytic acid or 17% ethylenediaminetetraacetic acid (EDTA) after root canal instrumentation with SmartTrack X3, Endo*star E, and ProTaper Gold rotary systems using an environmental scanning electron microscope (ESEM). METHODS: Sixty single-rooted unidentified extracted human maxillary anterior teeth were selected. The length of all the roots used was adjusted to 16 mm from the apex. Modified access cavities were done. Roots were equally and randomly allocated to three main groups (n = 20) corresponding to the rotary systems: group A1, SmartTrack X3; group A2, Endo*star E3; and group A3, ProTaper Gold. Each group was divided into two equal subgroups (n = 10), corresponding to the chelating agents applied as a final rinse: subgroup B1, 1% phytic acid, and subgroup B2, 17% EDTA. Roots were split in a buccolingual direction into two equal halves and examined under ESEM in the presence or absence of a smear layer at the cervical, middle, and apical segments. RESULTS: 1% Phytic acid and 17% EDTA recorded no statistically significant for removing the smear layer. For all subgroups, there was a significant difference in smear layer removal and more open dentinal tubules in the cervical segment versus the apical segment. CONCLUSION: In smear layer removal from root canals, 1% phytic acid was effective as 17% EDTA in smear layer removal form root canals after SmartTrack X3, Endo*star E3, or ProTaper Gold rotary systems instrumentation.

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Influence of smear layer removal on the obturation of root canal ramifications

Cited by 5 publications

References 18 publications

Effect of Six Obturation Techniques on Filling of Lateral Canals

Effect of Six Obturation Techniques on Filling of Lateral Canals

Irrigation: beyond the smear layer

Smear Layer Removal by 1% Phytic Acid after Root Canal Preparation with Three Different Rotary Systems

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