Scanning electron microscopic evaluation of dentinal tubule penetration of Epiphany in severely curved root canals

Rouhani, Armita; Ghoddusi, Jamileh; Naghavi, Nadia; Al-Lawati, Ghadir

doi:10.4103/1305-7456.120673

Cited by 11 publications

(6 citation statements)

References 34 publications

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“…According to an in vitro study by Rouhani et al, removing the smear layer helps increase the penetration depth of all the sealers [27] , consistent with the present study. The sealers' penetration depth in the apical third was significantly less than that in the middle and coronal thirds, consistent with the present study.…”

Section: Discussionsupporting

confidence: 92%

Evaluation of dentin penetration of three different endodontic sealers in the presence and absence of the smear layer

Bolbolian¹,

Hamzei²,

Mohammadi³

et al. 2022

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Introduction: A sealer’s ability to effectively and stably penetrate the dentinal tubules is an essential factor for selecting an effective root canal obturation material. Evaluation of the sealers’ penetration into the dentinal tubules provides valuable data in the endodontic treatment outcome. Aim: To compare the dentin penetration of AH Plus, Endoseal MTA, and Syntex endodontic sealers in the presence and absence of the smear layer. Materials and methods: Thirty single-rooted teeth were selected in the present in vitro study and randomly assigned to three experimental groups (n=10). Half of the samples were prepared by removing the smear layer in each group, and the remaining samples were prepared without removing the smear layer. Root canal preparation was carried out with the Perfect Rotary system up to file T3. The root canals were obturated with gutta-percha and AH Plus, Endoseal MTA, or Syntex endodontic sealers. The samples were incubated at 100% relative humidity at 37°C for one week. Each root was sectioned at 2-, 5-, and 8-mm distances from the apex, and sealer penetration depth at each section was determined under a scanning electron microscope (SEM). ANOVA was used to compare penetration depths. Results: There were significant differences in sealer penetration between the samples with and without smear layer removal in each group. The maximum and minimum sealer penetration was at the coronal and apical sections, respectively. The maximum sealer penetration depths in descending order were observed with AH Plus, Syntex, and Endoseal MTA sealers (p<0.05). Conclusions: Elimination of smear layer increased three sealers’ dentin penetration depth, with the deepest penetration for the AH Plus sealer in the coronal section without the smear layer.

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Section: Discussionsupporting

confidence: 92%

Evaluation of dentin penetration of three different endodontic sealers in the presence and absence of the smear layer

Bolbolian¹,

Hamzei²,

Mohammadi³

et al. 2022

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show abstract

“…As the surface area of dentin exposed to the sealer increases, the adhering and penetrating capacity of sealer also improves and a better seal is expected The penetration of AH plus into dentinal tubules for EDTA group in our study was found to be 181μm. A similar depth of penetration was observed in study done by A Rouhani et al 24 ie 172.22µm…”

Section: Discussionsupporting

confidence: 86%

Effect of Final Irrigating Solutions on Smear Layer Removal and Penetrability of an Epoxy Resin based Sealer into Dentinal Tubules

Kour¹,

P.R²,

R³

et al. 2019

IJCMR

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Introduction: During instrumentation smear layer formation occurs on dentinal wall and for a successful root canal its removal is necessary. Aim of the study was to compare effect of 17% EDTA, MTAD & 18%Etidronic acid (HEBP) + 5% NaOCl, irrigating solutions on smear layer removal and penetrability of AH Plus sealer into dentinal tubules using scanning electron microscopy (SEM). Material and methods: Sixty single rooted mandibular premolars, were divided into three groups (n=20).Group-I 17% EDTA, Group-II MTAD, Group-III 18%Etidronic acid+ 5% NaOCl. The final rinse was done by 5ml of solution for 2 minutes. Ten samples from each group were evaluated at middle and apical thirds for smear layer removal using SEM. Remaining ten samples of each group were obturated with gutta-percha & AH PLUS sealer and evaluated at 5mm above from the root apex for sealer penetration using SEM. Results: At middle 3rd no difference in smear layer removal was seen between Group-I and Group-II For apical 3rd Group-II showed better smear layer removal than Group-I and Group-III. Thus both in middle and apical thirds MTAD showed better smear layer removal. For mean sealer penetration Group-II showed a highest depth of sealer penetration i.e, 231.37±18.12µm followed by Group-I 154.95±22.53µm and Group-III 125.99±17.39µm Conclusion: MTAD is effective in smear layer removal from both middle and apical thirds. Maximum depth of sealer penetration was seen in MTAD group followed by EDTA group and least in Etidronic acid group.

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“…SEM has been used by a number of investigators to evaluate the penetration of sealer cements into dentinal tubules, [5,7,16,17] & digital microscope. [18,19] However, in the present study, the use of the CLSM model allowed for a full cross-sectional observation, which clearly showed the amount of labelled sealer inside the dentin. Confocal microscopy allowed visualization of the sealers within the dentinal tubules without resorting to specimen preparation techniques that would have caused artefacts.…”

Section: Discussionmentioning

confidence: 59%

Comparison of Root Canal Sealer Penetration and Distribution by Novel Reciprocating NITI Spreader with Sonic, Ultrasonic and Rotary Methods: A Confocal Laser Scanning Microscopic Study

Purra¹,

Ashraf²,

Misgar³

et al. 2017

Ann. Int. Med. Den. Res.

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Background: A sealer is required during obturation to fill space between gutta-percha and canal walls. It provides an impervious seal, fills the irregularities and minor discrepancies between the root canal wall and core filling material, and assists in microbial control. Aim: To evaluate the penetration depth and percentage area of a root canal sealer placed by five different techniques using confocal laser scanning microscope (CLSM). In our study we compared ultrasonic, endoactivator (sonic device), lentulospiral (rotary) and master gutta-percha with NiTi spreader in reciprocating hand piece for sealer placement using AH Plus sealer. Methods: Thirty extracted then decoronated and standardised mandibular premolars were prepared by Protaper rotary files up to master apical file F3. Samples were randomly divided into five groups for sealer placement; Group 1, Ultrasonic file; Group 2, Endoactivator; Group 3, Reciprocating hand piece with NiTi spreader; Group 4, Rotary Lentulospiral; Group 5, Master apical gutta-percha .Two root sections from apical and coronal third were analysed for sealer distribution and depth of sealer penetration by confocal microscope, using the ruler tool of the IOB software (Olympus). Results: Results showed that maximum depth and percentage of sealer penetration is shown by Group 1; ultrasonic file and least by Group 5; master apical gutta-percha both at apical as well as coronal levels. Conclusion: Sealer penetration is influenced by placement method and new method of using reciprocating NiTi spreader was comparable to ultrasonic method which showed best sealer penetration and distribution.

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Scanning electron microscopic evaluation of dentinal tubule penetration of Epiphany in severely curved root canals

Cited by 11 publications

References 34 publications

Evaluation of dentin penetration of three different endodontic sealers in the presence and absence of the smear layer

Evaluation of dentin penetration of three different endodontic sealers in the presence and absence of the smear layer

Effect of Final Irrigating Solutions on Smear Layer Removal and Penetrability of an Epoxy Resin based Sealer into Dentinal Tubules

Comparison of Root Canal Sealer Penetration and Distribution by Novel Reciprocating NITI Spreader with Sonic, Ultrasonic and Rotary Methods: A Confocal Laser Scanning Microscopic Study

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