Removal of Surgical Smear Layer

Fabiani, Cristiano; Franco, Vittorio; Covello, Francesco; Brambilla, Eugenio; Gagliani, Massimo

doi:10.1016/j.joen.2011.03.001

Cited by 6 publications

(7 citation statements)

References 27 publications

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“…Surgical smear layer in endodontics is defined as a smear layer, which contains micro-organisms and necrotic pulpal tissues which is formed on the dentinal surfaces, cut by the instruments during apicoectomy and retrograde cavity preparation. Citric acid, EDTA, 35% orthophosphoric acid and BioPure MTAD™ (DENTSPLY Tulsa Dental)[ 7 8 ] have been recommended for the removal of surgical smear layer.…”

Section: Discussionmentioning

confidence: 99%

Assessment of apical seal obtained after irrigation of root end cavity with MTAD followed by subsequent retrofilling with MTA and Biodentine: An in vitro study

et al. 2015

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Introduction:The present study is designed to assess the apical seal obtained after root end cavity irrigation with MTAD and retrograde filling with mineral trioxide aggregate (MTA) and Biodentine.Materials and Methods:Sixty extracted maxillary central incisors were instrumented and obturated. Apical 3 mm of all the roots were resected and retrograde preparations of 3 mm were made in all the teeth using ultrasonic tips. Thirty root end preparations were irrigated with MTAD for 5 min (Group 1), while 30 were irrigated with saline for 5 min (Group 2). Each main group was subdivided into two subgroups containing 15 samples each. Samples under each subgroup were then filled either with MTA (1A and 2A) or Biodentine (1B and 2B). The amount of microleakage was assessed using a UV spectrophotometer.Results:Statistical analysis suggest a significant difference (P < 0.005) between group 1A and 2A and between the groups 1B and 2B (P < 0.1). There was a significant difference (P < 0.005) between group 1A and 1B and also between group 2A and 2B.Conclusion:Irrigation with MTAD significantly improved the apical seal of Biodentine, but it increased the microleakage in MTA-filled root end cavities. Also the apical seal obtained with Biodentine was superior to that obtained with MTA.

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Section: Discussionmentioning

confidence: 99%

Assessment of apical seal obtained after irrigation of root end cavity with MTAD followed by subsequent retrofilling with MTA and Biodentine: An in vitro study

et al. 2015

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“…This minimizes exposure of dentinal tubules on the resected surface when compared to the 45° angle root end resection. [16]…”

Section: Discussionmentioning

confidence: 99%

Evaluation of smear layer removal from ultrasonically prepared retrocavities by three agents

et al. 2014

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Objectives:To evaluate the efficacy of 35% orthophosphoric acid, 24% ethylenediaminetetraacetic acid (EDTA) and 10% citric acid in the removal of smear layer from retrocavities prepared with ultrasonic retro-tips using scanning electron microscopy.Materials and Methods:Root canals of fifty single-rooted teeth were cleaned, shaped, and obturated with gutta-percha and AH plus sealer. The apical 3 mm of each root was sectioned with a diamond disc and retrograde cavities were prepared with Kis # 1 ultrasonic retro-tips to a depth of 3 mm. Retro cavities in Group I were treated with a gel of 35% orthophosphoric acid for 15 seconds, Group II were treated with a gel of 24% EDTA at neutral pH for 2 minutes, and Group III were treated with a gel of 10% citric acid for 2 minutes, followed by 1 minute rinsing with distilled water for all groups. The samples were prepared for scanning electron microscopic observation. Scoring was performed for the presence of the smear layer on the walls of the retrocavity.Results:In the orthophosphoric acid group, it was observed that all dentinal tubules were open in 70% of the samples. The majority of analyzed samples in EDTA and citric acid group showed dentinal tubules covered with the smear layer.Conclusions:Application of 35% orthophosphoric acid gel for 15 seconds on retrocavities prepared with ultrasonic retro-tips is the most effective means for removal of smear layer.

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“…Root‐end preparations can result in the accumulation of debris and in the production of a smear layer, which may harbor bacteria and pulp remnants . The removal of the smear layer has been advocated for orthograde endodontics, and thus it seems reasonable to remove potentially contaminated debris during retrograde procedures as well .…”

Section: Apical Microsurgerymentioning

confidence: 99%

“…Demineralization of resected root ends with 50% citric acid has also been associated with more rapid and complete healing in what is seen to be enhanced cementogenesis . It has been found in one study that the smear layer can be effectively removed by applying 35% orthophosphoric acid gel for 15 s, followed by rinsing with distilled water for 1 min . Using 35% orthophosphoric acid resulted in improved smear layer removal in comparison to a 24% EDTA gel .…”

Section: Apical Microsurgerymentioning

confidence: 99%

“…It has been found in one study that the smear layer can be effectively removed by applying 35% orthophosphoric acid gel for 15 s, followed by rinsing with distilled water for 1 min . Using 35% orthophosphoric acid resulted in improved smear layer removal in comparison to a 24% EDTA gel . Various chelating agents and organic acids of varying concentrations have been tested for smear layer removal, which is reflected in the various protocols used in different studies .…”

Section: Apical Microsurgerymentioning

confidence: 99%

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Ultrasonics in endodontics

Park¹

2013

Endodontic Topics

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The power of ultrasonic vibrations has been harnessed in the field of dentistry—evolving in its use and purpose—for just over 60 years. The first section of this review describes the evolution and various applications of ultrasound in dentistry, and examines in detail the ultrasonic tools that have been developed for endodontic purposes. The second section of this review describes the use of ultrasonics during specific endodontic procedures, from access to obturation, incorporating as much as possible the most recent and relevant research available to date.

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Removal of Surgical Smear Layer

Cited by 6 publications

References 27 publications

Assessment of apical seal obtained after irrigation of root end cavity with MTAD followed by subsequent retrofilling with MTA and Biodentine: An in vitro study

Assessment of apical seal obtained after irrigation of root end cavity with MTAD followed by subsequent retrofilling with MTA and Biodentine: An in vitro study

Evaluation of smear layer removal from ultrasonically prepared retrocavities by three agents

Ultrasonics in endodontics

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