scholarly journals The effect of different irrigation techniques on the quality of cleaning of root canal walls

2008 ◽  
Vol 55 (4) ◽  
pp. 221-228
Author(s):  
Violeta Pavlovic ◽  
Slavoljub Zivkovic
Keyword(s):  
Root Canal ◽  
Smear Layer ◽  
Sodium Hypochlorite Solution ◽  
Efficient Removal ◽  
Human Teeth ◽  
Root Canals ◽  
Group I ◽  
Different Types ◽  
The Difference

Aim: To evaluate the effect of irrigation techniques, i.e. different types of irrigation needles, on the quality of cleaning of root canal walls using scanning electron microscopy (SEM). Material and Method: The study was conducted on 16 extracted, single-rooted, human teeth. The samples were allocated to two experimental groups depending on the type of the irrigation needle. Conventional needles were used for the irrigation of Group I and laterally perforated ones for Group II. All root canals were instrumented using K files and the Step-back technique. During instrumentation, all samples were irrigated with 2.5 % sodium hypochlorite solution followed by final irrigation with 17 % EDTA for 1 min. After that, all samples were irrigated with 10 ml of distilled water. The roots were, then, sectioned longitudinally and middle one third of each root canal was analyzed using SEM. Quantitative analysis was based on criteria by H?lsmann et al. Results: The obtained results showed that the more efficient removal of debris and the smear layer was accomplished in the group of samples irrigated using laterally perforated needles than conventional needles. The difference between the investigated irrigation techniques were statistically significant (p<0.01). Conclusion: The use of laterally perforated needles for irrigation allows more efficient cleaning of root canal walls, i.e. the removal of debris and the smear layer.

scholarly journals Coronal microleakage in intact and carious teeth obturated using lateral compaction of gutta-percha

2008 ◽  
Vol 55 (2) ◽  
pp. 99-106
Author(s):  
Aleksandra Djeri ◽  
S. Sukara ◽  
R. Arbutina ◽  
Z. Trnic ◽  
N. Gajic
Keyword(s):  
Endodontically Treated Teeth ◽  
Human Teeth ◽  
Root Canals ◽  
Dye Penetration ◽  
Gutta Percha ◽  
Group I ◽  
The Difference ◽  
Micrometer Scale ◽  
Carious Teeth

Introduction: Coronal microleakage is one of the most important factors for the success and longevity of endodontically treated teeth. Aim: The aim of this study was to evaluate in vitro the coronal microleakage in carious and intact teeth obturated with lateral compaction of gutta-percha using the dye penetration method. Materials and Methods: Forty extracted human teeth were allocated to two groups: Group I consisted of 20 intact teeth (10 single-rooted and 10 multi-rooted) and Group II comprised 20 carious teeth (10 single-rooted and 10 multi-rooted). Root canal preparation was performed using the Step-back technique and copious irrigation with 2.5% NaOCl. All root canals were obturated using lateral compaction and AH Plus endodontic sealer. The teeth were coronally filled with either CAVIT only or the combination of GIC and CAVIT, coated with 2 layers of nail varnish and immersed in 50% AgNO3. Afterwards, the teeth were sectioned mesio-distally using a diamond disc and linear dye penetration was evaluated using a stereo loupe with a micrometer scale at x6 magnification. Results: The results showed dye penetration in 70% of teeth filled with CAVIT and in 10% of teeth filled with GIC+CAVIT. The difference was statistically significant (p<0.05). Conclusion: Based on the obtained results, it may be concluded that the least coronal microleakage was observed in intact teeth temporarily filled with the GIC+CAVIT combination.

scholarly journals In vitro evaluation of root canal preparation with two rotary instrument systems – Pro Taper and Hero Shaper

2015 ◽  
Vol 88 (3) ◽  
pp. 395-402
Author(s):  
Carola Pentelescu ◽  
Loredana Colceriu ◽  
Ovidiu Pastrav ◽  
Carina Culic ◽  
Radu Chisnoiu
Keyword(s):  
Cross Sections ◽  
Root Canal ◽  
Working Time ◽  
Smear Layer ◽  
Root Canal Preparation ◽  
Root Canals ◽  
Maxillary Premolars ◽  
Oval Cross Section ◽  
The Difference

Background and aims. The purpose of this study was to compare several parameters of root canal preparation using two different rotary Nickel-Titanium instruments: Pro-Taper (Dentsply Maillefer, Ballagigues, Switzerland) and Hero-Shaper (Micro Mega, Besancon, France).Methods. Twelve extracted maxillary premolars were randomly divided into two groups and embedded into a muffle system. All root canals were prepared to size 25 using Pro-Taper or Hero-Shaper rotary instruments.  The following parameters were evaluated: root canal form, centering capacity of the instrument, the presence of residual dentinal debris and smear layer on the root canal walls, working time and the occurrence of intraoperative accidents. Statistical analysis was performed using the chi2 test (p=0.05).Results. The majority of the root canals prepared with Hero Shaper (88.89%) and ProTaper (77.78%) showed a round or oval cross-section postoperatively. Superposition of pre- and postoperative photographs of the cross-sections showed that for the coronal third of the root canals the Hero Shaper performed in a superior manner, while for the apical third better results were obtained with the Pro Taper system. Cleanliness of the root canal walls was investigated under the SEM, in the middle third of the canal, using a five-score system for debris and smear layer. For debris Hero Shaper and Pro Taper rotary systems achieved 66.67% and 50% scores of 1 or 2, respectively. The results for the smear layer were similar: cleaner root canal walls were found after preparation with Hero Shaper (66.67% scores 1, 2), followed by Pro Taper (50%). Mean working time was shorter for Hero Shaper (124s) than for Pro Taper (184s); the difference was not significant.Conclusions. Within the limits of this study, both systems had almost the same cleaning ability and excellent centering capacity.

scholarly journals The Difference of Irrigant Solution between Red Pine Extract (Pinus densiflora) and Green Pine Extract (Pinus merkusii) Against Cleanliness of Root Canal Walls

2020 ◽  
Vol 10 (2) ◽  
pp. 62
Author(s):  
Dian Agustin Wahjuningrum ◽  
Setyabudi Setyabudi ◽  
Sukaton Sukaton ◽  
Yuline Krishartini
Keyword(s):  
Root Canal ◽  
Pinus Densiflora ◽  
Inorganic Materials ◽  
Red Pine ◽  
Smear Layer ◽  
Herbal Extract ◽  
Group Iii ◽  
Group I ◽  
The Difference ◽  
Pinus Merkusii

Background: Smear layer is an accumulation of organic material, debris, and inorganic material in root canal wall. Irrigant solution must be able to eliminate organic and inorganic materials. Herbal extract such as pine contain saponins that can dissolve organic and inorganic materials. Korea is a country that has used pine in this case red pine as an antibacterial medicament. In Indonesia, there are also green pine species. Purpose: To explain the differences in cleanliness of the root canals after irrigation using extracts of red pine (Pinus densiflora) and green pine (Pinus merkusii). Methods: This study used twenty-seven mandibular premolar teeth which were divided into 3 groups each group consisted of 9 premolar teeth. All samples were prepared using ProTaper for Hand Use and irrigated. Group I was irrigated using 2.5% NaOCl, group II was irrigated with red pine extract, and group III was irrigated using green pine extract. Tooth that has been prepared, were cut vertically into 2 and cut horizontally in 1/3 apical section. The root canal surface was observed using a scanning electron microscope. Photomicrograph was observed by three observers using a score and performed an analysis test. Results: There were no difference between red pine (Pinus densiflora) and green pine (Pinus merkusii) in root canal cleanliness with a significance value of 0.169 (p> 0.05) Conclusion: Red pine extract had the same smear layer cleaning power as green pine extract.

scholarly journals Comparative study of coronal sealing ability using root cross sections method

2007 ◽  
Vol 54 (4) ◽  
pp. 224-230
Author(s):  
Dejan Markovic ◽  
Vesna Zivojinovic ◽  
Slavoljub Zivkovic
Keyword(s):  
Cross Sections ◽  
Root Canal ◽  
Smear Layer ◽  
Blue Dye ◽  
Human Teeth ◽  
Root Canals ◽  
Dye Penetration ◽  
Gutta Percha ◽  
Significant Difference

Objective: An in vitro comparison of coronal microleakage of three root canal sealers was performed using the dye leakage method. Methodology: Ninety-eight single-rooted human teeth were instrumented and randomly allocated to two groups. In the first group, root canals were treated with EDTA to remove the smear layer. The roots in both groups were obturated using laterally condensed gutta-percha and Sealapex, AH-26 or Ketac-Endo as the sealer. The teeth were suspended in 1% methylene blue dye for 6 days. The teeth were then rinsed, sectioned perpendicular to the long axis and evaluated for coronal dye penetration. Results: In general, Ketac-Endo root canal sealer showed greater dye penetration than Sealapex and AH-26. A statistically significant difference in the coronal penetration of the dye was found in the group with intact smear layer. Conclusion: Highly significant differences between AH-26 and Ketac-Endo (p < 0.001) and Sealapex and Ketac Endo (p < 0.001) were found.

scholarly journals In vitro evaluation of coronal microleakage associated with two root obturation techniques

2007 ◽  
Vol 54 (3) ◽  
pp. 184-190 ◽  
Author(s):  
Slavoljub Zivkovic ◽  
Borislava David-Burlica ◽  
Jelena Stanisic ◽  
Sonja Stojcic ◽  
Milica Medojevic-Jovanovic ◽  
...  
Keyword(s):  
Nitrate Solution ◽  
Silver Nitrate Solution ◽  
Smear Layer ◽  
Human Teeth ◽  
Root Canals ◽  
Gutta Percha ◽  
Ah Plus ◽  
The Difference ◽  
Micrometer Scale

Aim: The purpose of this study was to determine the influence of the smear layer on the coronal microleakage in root canals obturated with laterally condensed cold gutta-percha or Thermafil and two root canal sealers. Materials and methods: Sixty extracted single-rooted human teeth with straight root canals were allocated to two experimental groups. The root canals were instrumented using the STEP-BACK technique, K reamers and K files and irrigated with 2.5 % NaOCl. The teeth in the first group were treated with 17% EDTA and 2.5 % NaOCl to remove the smear layer. The teeth in both groups were obturated either with laterally condensed cold guttapercha (28 teeth) or Thermafil gutta-percha with plastic cores (28 teeth) and RSA or AH-PLUS sealers. The specimens were evaluated for coronal microleakage using silver nitrate solution. The linear penetration of the dye was assessed using a binocular magnifying glass (x25), with an inserted micrometer scale. Results: The results showed low coronal microleakage in the group where the smear layer was removed in both the lateral compaction technique (RSA - 1.71mm and AHPLUS - 1.61mm) and the Thermafil groups - RSA (1.65mm) and AH-PLUS (1.66mm). In the group with the intact smear layer, greater microleakage was noticed in both groups, lateral compaction technique -RSA (3.06 mm) and AH-PLUS (2.83mm) and Thermafil technique -RSA (2.99mm) and AH-PLUS ( 2.83mm). The difference was statistically significant between the groups with and without the smear layer for both RSA (p< 0.001) and AH-PLUS sealers ( p<0.001). Conclusion: The present results suggest that the removal of the smear layer significantly improves the tightness of the coronal seal and reduces the coronal microleakage.

scholarly journals Perbedaan Kebersihan Sepertiga Apikal Saluran Akar dari Smear Layer Menggunakan Sistem Aktivasi Ultrasonik dan Sonik

2019 ◽  
Vol 4 (1) ◽  
pp. 26-32
Author(s):  
Della Puspita ◽  
Rudy Djuanda ◽  
Angela Evelyna
Keyword(s):  
Root Canal ◽  
Smear Layer ◽  
Activation Technique ◽  
Ultrasonic Activation ◽  
Group Iii ◽  
Root Canals ◽  
Group I ◽  
Sonic Activation ◽  
Irrigant Activation ◽  
Scanning Electron

Irrigant activation is important for successful endodontic treatment. There are some of activation technique those are manual irrigation with needle irrigation and mechanics irrigation with sonic, and ultrasonic activation. The aim of this study was to compare the effectiveness between sonic and ultrasonic activation technique as irrigation activation for smear layer removal in apical third of the root canal. Fifteen mandibular premolars were used. NaOCl 2,5% and EDTA 17% was used as an irrigant. Sample were divided into 3 equal group (n=5) according to the final activation technique: group I as a needle irrigation  II as a ultrasonic activation, group III sonic activation. Root canals were split longitudinnaly and subjected to scanning electron microscope with 2000x magnification. Data were evaluated using statistics kruskall wallis and mann whitney. The result of this study shows there were statistically significant differences in staistics Mann Whitney on group III  were more clean than group II p < 0,05. Sonic technique more effective in removal of smear layer in apical third of the root canal than ultrasonic activation technicque. Important to noted the variant of irrigant and activation.

scholarly journals In vitro study of the effect of Er: YAG laser irradiation on the apical sealing of different root canal sealers

2006 ◽  
Vol 14 (4) ◽  
pp. 260-263 ◽  
Author(s):  
Fernanda Vieira Medina ◽  
Manoel Damião Souza-Neto ◽  
Jacy Ribeiro Carvalho-Junior ◽  
Heid Sueli Leme dos Santos ◽  
Melissa Albanese Mezzena ◽  
...  
Keyword(s):  
Laser Irradiation ◽  
Sodium Hypochlorite ◽  
Root Canal ◽  
Er:Yag Laser ◽  
Sodium Hypochlorite Solution ◽  
Laser Application ◽  
Hypochlorite Solution ◽  
Root Canals ◽  
Group I ◽  
Significant Difference

OBJECTIVES: The aim of this study was to determine the effect of Er:YAG laser irradiation used to clean dentinal walls on the apical sealing of root canals filled with different types of sealers. Background Data: Laser application to the dentinal walls removed debris, rendering the root canals free of smear layers and leaving the dentinal canaliculi open. METHODS: Sixty-four maxillary canines obtained from laboratory files were instrumented with K-files (Dentsply, Maillefer, Ballaigues, Switzerland) using the crown-down technique, and irrigated with a 0.5% sodium hypochlorite solution. The specimens were divided into two groups of 32 teeth each. In group I, the teeth were instrumented and irrigated with sodium hypochlorite solution, and divided into four subgroups to be sealed with the different materials (Endofill, N-Rickert, Sealapex and Sealer 26). In group II, the root canals were subjected to Er:YAG laser irradiation (200 mJ, 7 Hz and 60 J total energy), followed by root canal sealing as in group I. RESULTS: The data showed lower levels of apical microleakage in the teeth filled with N-Rickert, Sealapex and Sealer 26 cements than in those sealed with Endofill (p < 0.01). No significant difference in microleakage was observed between teeth irrigated only with 0.5% sodium hypochlorite and those submitted to Er:YAG laser application (p > 0.05). CONCLUSIONS: The Er:YAG laser irradiation applied to the root canal walls was not able to prevent apical microleakage.

scholarly journals Possibility of "Spongio cement" usage for root canal opturation

2002 ◽  
Vol 49 (3-4) ◽  
pp. 81-85 ◽  
Author(s):  
Branislav Karadzic
Keyword(s):  
Root Canal ◽  
Smear Layer ◽  
Root Canals ◽  
Single Root ◽  
Dye Penetration

The aim of this study was to evaluate of apical and canal opturation quality of polymethyl metacrylate based material for canal opturation. Investigations were included 60 extracted human single root teeth. Root canals were opturated by standard endodontic technic with three different materials. Teeth were decalcificated and enlightened in 2% methyl salicilate solution. Linear dye penetration was measured with bynocular magnifying glass with 25x magnification. Results showed that the highest apical dye penetration in canals opturated with PMMA based material in relation of AH-26 and Sealapex. Middle value of linear dye penetration in canals opturated with PMMA based material where smear layer was removed was significantly les then in group of teeth where smear layer present.

scholarly journals Root canal cleaning with different reciprocating and rotary instrumentation systems

2019 ◽  
Vol 9 (1) ◽  
pp. 1-8
Author(s):  
Selen İnce Yusufoğlu ◽  
Hale Arı Aydınbelge
Keyword(s):  
Root Canal ◽  
File Systems ◽  
Smear Layer ◽  
Human Teeth ◽  
Root Canals ◽  
Group 4 ◽  
Native Speakers Of English ◽  
Group 3 ◽  
The Mean ◽  
Group 2

Aim: The purpose of the present study was to compare the cleaning effectiveness of two reciprocating single-file systems with ProTaper Next and ProTaper Universal rotary instruments during the preparation of single-rooted extracted teeth. Methodology: Sixty freshly extracted single-rooted human teeth were randomly divided into 4 groups (n=15). In group 1, root canals were prepared with ProTaper Universal, in group 2, they were prepared with ProTaper Next, in group 3, they were prepared with WaveOne and in group 4, root canals prepared with Reciproc systems. Canals were prepared to the following apical sizes: ProTaper Universal F3, ProTaper Next X3, WaveOne Primary and Reciproc 25. The irrigant in all groups was 2ml 2.5% sodium hypochlorite (NaOCl) solution, the final irrigation after preparation all groups was 2ml NaOCl, 2ml EDTA and 2ml saline solution. The roots were split longitudinally into halves and the canals examined using a scanning electron microscope. The presence of a debris and smear layer was recorded at the coronal, middle and the apical thirds of root canals using a five-step scoring scale. Data were statistically analyzed using Kruskal-Wallis and Mann-Whitney U tests. Results: All groups showed more efficient smear layer and debris removal coronally than in the middle and apical regions, whereas the mean total debris score and the mean smear layer score in all groups were less in the WaveOne and the Reciproc groups. Conclusions: Under the conditions of this study, for root canal cleanliness Reciproc and WaveOne may be preferred rather than ProTaperUniversal and ProTaperNext.   How to cite this article: İnce Yusufoğlu S, Arı Aydınbelge H. Root canal cleaning with different reciprocating and rotary instrumentation systems. Int Dent Res 2019;9(1):1-8.   Linguistic Revision: The English in this manuscript has been checked by at least two professional editors, both native speakers of English.

scholarly journals Efficiency of final irrigation of root canal in removal of smear layer

2009 ◽  
Vol 137 (9-10) ◽  
pp. 482-489 ◽  
Author(s):  
Aleksandar Mitic ◽  
Nadica Mitic ◽  
Slavoljub Zivkovic ◽  
Goran Tosic ◽  
Vojin Savic ◽  
...  
Keyword(s):  
Root Canal ◽  
Morphological Structure ◽  
Tween 80 ◽  
Sem Analysis ◽  
Smear Layer ◽  
Control Group ◽  
Water Control ◽  
Human Teeth ◽  
Irrigation Solution

Introduction A smear layer forms on the root canal walls as the consequence of root instrumentation. The smear layer formed in such a way considerably influences the quality of root obturation and endodontic treatment outcome. Objective The aim of this study was to ultrastructurally analyze the surface of intracanal dentine after removal of the smear layer by the solution of doxycycline, citric acid and detergent Tween-80 (MTAD). Methods The study involved 60 single-rooted, extracted, human teeth divided into four groups. All samples were instrumented by a step-back technique and manual K-files, and rinsed during instrumentation by 2% CHX and H2O2. The first group of samples was exclusively rinsed by CHX and H2O2; in the second group, besides using CHX and H2O2, MTAD solution was used for the final irrigation. The samples which were rinsed by distilled water (+ control) and the samples rinsed by 5.25% NaOCl and 17% Na EDTA (-control) served as control groups. All samples were observed under the scanning electronic microscope JEOL-JSM-5300. The coronary, middle and apex thirds of the radix region were analyzed. Results The obtained results of the SEM analysis showed that the application of 2% chlorhexidine and hydrogen peroxide did not give clear dentine walls, and the smear layer could not be removed completely. The application of the same combination (CHX and H2O2), added by the final MTAD irrigation solution, led to the efficient removal of the smear layer, while the morphological structure of dentine surface remained unchanged. Statistical analysis showed that canal walls in the experimental group with MTAD as the final irrigation were significantly clearer compared to the control group (p<0.001). Conclusion Based on the obtained results, it can be concluded that MTAD is an efficient solution for the final irrigation of the canal system.

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