Lack of Correlation among Three Methods for Evaluation of Apical Leakage

Pommel, Ludovic; Jacquot, Bruno; Camps, Jean

doi:10.1097/00004770-200105000-00010

Cited by 97 publications

(95 citation statements)

References 19 publications

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“…Previous studies have emphasized that different leakage evaluation methods have little influence on study results. [24][25][26] Dye leakage testing was chosen especially for the assessment of apical leakage, and also provided an additional control for the presence of eventual cracks and fissures in the roots. The FTM chosen for the evaluation of throughand-through leakage had the advantage of re-using the same specimens for sequential leakage measurements.…”

Section: Discussionmentioning

confidence: 99%

Longitudinal Study on the Influence of Nd:YAG Laser Irradiation on Microleakage Associated with Two Filling Techniques

Meire

Mavridou²,

Dewilde³

et al. 2009

Photomedicine and Laser Surgery

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Objective: This study investigates the effects of Nd:YAG laser irradiation on apical and coronal seals, when used prior to two root canal filling techniques. Background Data: Limited information exists regarding the effects of morphologic changes to dentin walls following Nd:YAG laser irradiation on the sealing ability of root fillings. Methods: Two hundred forty teeth were analyzed by observing coronal and apical leakage of Indian ink (DL), and 60 were analyzed for through-and-through leakage using the fluid transport model (FTM). The Nd:YAG laser parameters were 1.5 W, 100 mJ, and 15 Hz (four times for 5 s at 20 s intervals). Each group consisted of a lased and a nonlased subgroup: each subgroup had root fills done by either cold lateral condensation (CLC) or hybrid condensation (HC). Leakage was assessed after 48 h, and then at 1, 6, and 12 months. The DL group was divided into four groups of 15 teeth for each evaluation point. Through-and-through leakage (L in microliters= day) was measured for 48 h under a pressure of 1.2 atm using FTM, and recorded as L ¼ 0 (L1), 0 < L 10 (L2), or L > 10 (L3). Results: Apical and coronal dye leakage was observed in all groups. Significant differences ( p < 0.05) in apical leakage were found between HC and HC þ Nd after 1, 6, and 12 months, and between CLC and CLC þ Nd at 6 and 12 months. No significant differences were found between laser-irradiated and non-laserirradiated groups with FTM. Conclusion: Pulsed Nd:YAG laser irradiation following root canal preparation may reduce apical leakage in association with hybrid gutta-percha condensation.

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Section: Discussionmentioning

confidence: 99%

Longitudinal Study on the Influence of Nd:YAG Laser Irradiation on Microleakage Associated with Two Filling Techniques

Meire

Mavridou²,

Dewilde³

et al. 2009

Photomedicine and Laser Surgery

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“…However, there is no consensus about the methods used for leakage evaluation (9). A number of studies which evaluated the correlation between various leakage methodologies found no correlation (12)(13)(14). The lack of correlation may be related to the different physical mechanisms of the methodologies (15).…”

Section: Discussionmentioning

confidence: 99%

Apical Microleakage of a Silicone Based Root Canal Sealer: an Electrochemical Study

Görduysus¹,

Küçükkaya²

2014

Acta Stomatol Croat

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Adresa za dopisivanjeSelen Küçükkaya DDS Hacettepe University Faculty of Dentistry Department of Endodontics 06100 Sıhhıye -Ankara, Turkey selenkkkaya@yahoo.com Sažetak Svrha: Elektrokemijskom metodom procijenilo se apikalno propuštanje materijala RoekoSeal Automix (RSA) za punjenje korijenskog kanala samostalno i u kombinaciji s gutaperkom. Materijali i metode: Pedeset i dva prednja maksilarna zuba podijeljena su u dvije skupine. U prvoj su korijenski kanali punjeni samo RSA-om, a u drugoj gutaperkom i RSA-om (n = 24 u svakoj skupini). Preostala četiri zuba služila su kao pozitivna i negativna kontrolna skupina. Eksperimentalna jedinica konstruirana je tako da je bila neprekidno spojena na izvor struje. Jedanpostotni kalijev jodid (KI) korišten je kao elektrolit te su zubi uronjeni u otopinu. Bakrene elektrode s provodnim kapacitetom od jednoga miliampera (mA) korištene su kao anode za zatvaranje strujnog kruga. Rezultati su se očitavali ukupno tri tjedna, jedanput na dan, digitalnim voltmetrom spojenim na eksperimentalnu jedinicu. Promjene u količini propuštanja u skupini procjenjivale su se svaki dan t-testom za ovisne uzorke, a razlika između dviju skupina analizirana je t-testom za neovisne uzorke. Rezultati: Razlika u apikalnom propuštanju između dviju eksperimentalnih skupina nije bila statistički značajna (p>0,05). U objema je zabilježeno značajno propuštanje u svim vremenskim intervalima (p<0,05). Zaključak: RoekoSeal Automix samostalno nije se razlikovao u propuštanju od gutaperke punjene njime. Također nije bio potpuno učinkovit u sprječavanju propuštanja.Ključne riječi zub, apeks; korijenski kanal, preparacija; dentalno propuštanje; korijenski kanal, materijali za punjenje; dentalni cementi Sveučilište Hacettepe, Stomatološki fakultet, Zavod za endodonciju, Ankara-Turska Hacettepe University, Faculty of Dentistry, Department of Endodontics, Ankara-Turkey IntroductionThe purpose of endodontic filling is to provide a fluidtight seal at the apex and a total obturation of the root canal system (1). This is commonly achieved using a combination of gutta-percha as a core material and a root canal sealer. Root canal sealers are used to fill the minor interstices between the solid filling material and the wall of the canal. Unless a root canal sealer meets the necessary requirements, it may cause an increase in leakage which leads to endodontic failure (2). To date, there have been lasting attempts to develop better sealers, core materials and obturation techniques to increase the success of root canal treatment. Recently, RoekoSeal Automix (RSA, Roeko, Langenau, Germany), which is a polydimethylsiloxane-based sealer, has been introduced to endodontics. RSA is a silicone elastomer, consisting essentially of polydimethylsiloxane, silicone oil, paraffin base oil, hexachloroplatinic acid (catalyst), zirconium dioxide for the radiopacity. According to the manufacturer, RSA is ready for use in an automix system, does not contain eugenol, biocompatible, radiopaque, well flowing, sets in dry and moist conditions, p...

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“…the bacterial test on the same teeth and found no correlation between the tests. Pommel et al 27 also compared fluid filtration, electro-chemical and dye leakage tests in evaluating the sealing ability of single-cone and vertical condensation obturation techniques, using the same teeth, and found no correlation among the tests. However, Wu et al 28 compared fluid filtration and dye penetration methods and found fluid transport was a more sensitive method for detecting voids along the root canal filling than dye penetration.…”

Section: Discussionmentioning

confidence: 99%

Lack of correlation between obturation limits and apical leakage

et al. 2013

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The aim of this paper was to evaluate a possible correlation between obturation limits and leakage. Thirty-six extracted human mandibular incisors were used, characterized by straight and single canals, non-anatomical complexities, absence of previous endodontic treatment, complete root formation and patent foramen. For standardization of the specimens for the leakage analysis, foraminal instrumentation was performed up to a Flexofile #25 (Dentsply-Maillefer, Ballaigues, Switzerland). All specimens were instrumented and filled following the same protocol, and the obturation limits were measured using Axiovision 4.5 Software (Carl Zeiss Vision, Hallbergmoos, Germany). The specimens were then separated into three groups (n = 12) according to the following variables: Group I -obturation limits ranging from 0 mm to 0.76 mm of the main apical foramen. Group II -obturation limits ranging from 0.77 mm to 0.98 mm of the main apical foramen. Group III -obturation limits ranging from 0.99 mm to 1.68 mm of the main apical foramen. Apical leakage was quantified by fluid filtration. The analyses were confronted using Pearson's test (p > 0.05). Groups I, II and III showed Pearson correlation values (r 2 ) of −0.152, −0.186 and 0.058, respectively. No correlation was found between the obturation limits and apical leakage.

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Lack of Correlation among Three Methods for Evaluation of Apical Leakage

Cited by 97 publications

References 19 publications

Longitudinal Study on the Influence of Nd:YAG Laser Irradiation on Microleakage Associated with Two Filling Techniques

Longitudinal Study on the Influence of Nd:YAG Laser Irradiation on Microleakage Associated with Two Filling Techniques

Apical Microleakage of a Silicone Based Root Canal Sealer: an Electrochemical Study

Lack of correlation between obturation limits and apical leakage

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