Skip to main content
Key Specialties
Cardiology Diabetology Endocrinology Gastroenterology Geriatrics and Gerontology Gynecology and Obstetrics Hematology Infectious Disease Internal Medicine Nephrology Neurology Oncology Pediatrics Respiratory Medicine Rheumatology Surgery
Congress Coverage
2024 ACC Congress 2023 ESMO Congress 2023 EASD Congress 2023 ERS Congress 2023 ESC Congress
Clinical Collections
Advances in Alzheimer’s

Keynote webinar | Spotlight on medication adherence

LIVE: Thursday 27th June 2024, 18:00-19:30 (CEST)
Join our expert panel to discover why you need to understand the drivers of non-adherence in your patients, and how you can optimize medication adherence in your clinics to drastically improve patient outcomes.
ADVANCED SEARCH
Log in
Top
Clinical Oral Investigations
Published in: Clinical Oral Investigations 4/2007

01-12-2007 | Original Article

The influence of smear layer in lateral channels filling

Authors: Angelica Bertacci, Chiara Baroni, Lorenzo Breschi, Mauro Venturi, Carlo Prati

Published in: Clinical Oral Investigations | Issue 4/2007

Login to get access

Abstract

This in vitro study evaluated the ability of a warm gutta-percha obturation system Thermafil to fill lateral channels in presence/absence of smear layer. Forty single-rooted extracted human teeth were randomly divided into two groups for which different irrigation regimens were used: group A, 5 ml of 5% NaOCl + 2.5 ml of 3.6% H2O2; group B, 5 ml of 5% NaOCl 5% + 2.5 ml of 17% ethylenediamine tetraacetic acid. A conventional crown-down preparation technique was employed. Obturation was performed using epoxy resin-based cement (AH Plus) and a warm gutta-percha plastic carrier system (Thermafil). Specimens were cleared in methyl salicylate and analyzed under a stereomicroscope to evaluate the number, length, and diameter of lateral channels. Lateral channels were identified in both groups at medium and apical thirds. Additional samples were prepared for scanning electron microscopy inspection to confirm the presence of smear layer in group A, and the absence of smear layer in group B. All lateral channels resulted filled in both groups. No statistically significant differences regarding number, length, and diameter were observed between the two groups. Smear layer did not prevent the sealing of lateral channels.
Literature
1.
Baumgartner JC, Cuenin PR (1992) Efficacy of several concentrations of sodium hypochlorite for root canal irrigation. J Endod 18:605–612PubMedCrossRef
2.
Becker TA, Donnelly JC (1997) Thermafil obturation: a literature review. Gen Dent 45:46–55PubMed
3.
Bradshaw GB, Hall A, Edmunds DO (1989) The sealing ability of injection-molded thermoplasticized gutta-percha. Int Endod J 22:17–20PubMedCrossRef
4.
Chu CH, Lo CM, Cheung GSP (2005) Outcome of root canal treatment using Thermafil and cold lateral condensation filling techniques. Int Endod J 38:179–185PubMedCrossRef
5.
Clark-Holke D, Drake D, Walton R, Rivera E, Guthmiller JM (2003) Bacterial penetration trough canals of endodontically treated teeth in the presence or absence of smear layer. J Dent 31:275–281PubMedCrossRef
6.
Dummer PMH, Lyle L, Rawle J, Kennedy JK (1994) A laboratory study of fillings in teeth obturated by lateral condensation of gutta-percha or Thermafil obturator. Int Endod J 27:32–38PubMedCrossRef
7.
Evans JT, Simon JH (1986) Evaluation of the apical seal produced by injected thermoplasticized gutta-percha in the absence of smear layer and root canal sealer. J Endod 12:100–107PubMedCrossRef
8.
Foschi F, Nucci C, Montebugnoli L, Marchionni S, Breschi L, Malagnino VA, Prati C. (2004) SEM evaluation of canal wall dentine following use of Mtwo and ProTaper NiTi rotary instruments. Int Endod J 37:832–839PubMedCrossRef
9.
Gencoglu N, Garip Y, Samani S (2002) Comparison of different gutta-percha root filling techniques: Thermafil, Quick-Fill, System B and lateral condensation. Oral Surg Oral Med Oral Pathol 93:333–336
10.
Grandini S, Balleri P, Ferrari M (2002) Evaluation of Glyde File Prep in combination with sodium hypochlorite as a root canal irrigant. J Endod 28:300–303PubMedCrossRef
11.
Haikel Y, Wittenmeyer W, Bateman G, Bentaleb A, Allemann C (1999) A new method for the quantitative analysis of endodontic microleakage. J Endod 25:172–177PubMedCrossRef
12.
Jarret IS, Marx D, Covey D, Karmazin M, Laviv M, Gound T (2004) Percentage of canals filled in apical cross-section an in vitro study of seven obturation techniques. Int Endod J 37:392–398CrossRef
13.
Kopper PMP, Figueiredo JAP, Della Bona A, Vanni JR, Bier CA, Bopp S (2003) Comparative in vivo analysis of the sealing ability of three endodontic sealers in post-prepared root channels. Int Endod J 36:857–863PubMedCrossRef
14.
Lee K, Williams M, Camps J, Pashley D (2002) Adhesion of endodontic sealers to dentin and gutta-percha. J Endod 28:684–688PubMedCrossRef
15.
Levitan ME, Himel VT, Luckey JB (2003) The effect of insertion rates on fill length and adaptation of a thermoplasticized gutta-percha technique. J Endod 29:505–508PubMedCrossRef
16.
Lim TS, Wee TY, Choi, WC Koh, Sae-Lim V (2003) Light and scanning electron microscopic evaluation of Glyde File Prep in smear layer removal. Int Endod J 36:336–343PubMedCrossRef
17.
Love RM, Jenkinson HF (2002) Invasion of dentinal tubules by oral bacteria. Crit Rev Oral Biol Med 13:171–183PubMed
18.
McGurkin-Smith R, Trope M, Caplan D, Sigurdsson A (2005) Reduction of intracanal bacteria using GT rotary instrumentation, 5.25% NaOCl, EDTA, and Ca(OH)2. J Endod 31:359–363PubMedCrossRef
19.
O’ Connel MS, Morgan LA, Beeler WJ, Baumgartner JC (2000) A comparative study of smear-layer removal using different salts of EDTA. J Endod 26:739–733CrossRef
20.
Prati C, Chersoni S, Pashley DH (1999) Effect of removal of surface collagen fibrils on resin dentin-bonding. Dent Mater 15:323–331PubMedCrossRef
21.
Prati C, Foschi F, Nucci C, Montebugnoli L, Marchionni S (2004) Appearance of the root canal walls after preparation with NiTi rotary instruments: a comparative SEM investigation. Clin Oral Investig 8:102–110PubMedCrossRef
22.
Reader CM, Himel VT, Germain LP, Hoen MM (1993) Effect of three obturation techniques on the filling of lateral canals and the main canal. J Endod 19:404–408PubMedCrossRef
23.
Rud J, Andreasen JO (1972) Operative procedures in periapical surgery with contempraneous root filling. Int J Oral Surg 1:297–310PubMedCrossRef
24.
Saleh IM, Ruyter IE, Haapasalo M, Orstavik D (2002) The effects of dentine pretreatment on the adhesion of root-canal sealers. Int Endod J 35:859–866PubMedCrossRef
25.
Saleh IM, Ruyter IE, Haapasalo M, Ǿrstavik D (2004) Survival of Enterococcus faecalis in infected dentinal tubules after root canal filling with different root canal sealer. Int Endod J 37:193–198PubMedCrossRef
26.
Schafer E, Olthoff G (2002) Effect of three different sealers on the sealing ability of both Thermafil obturators and cold laterally compacted gutta-percha. J Endod 28:638–642PubMedCrossRef
27.
Sen BH, Wesselink PR, Turkun M (1995) The smear layer: a phenomenon in root canal therapy. Int Endod J 28:141–148PubMedCrossRef
28.
Siqueira JF (2001) Aetiology of root canal treatment failure: why well-treated teeth can fail. Int Endod J 34:1–10PubMedCrossRef
29.
Torabinejad M, Handysides R, Ali Khademi A, Bakland LK (2002) Clinical implications of the smear layer in endodontics: a review. Oral Surg Oral Med Oral Pathol Oral Radiol Endod 94:658–666PubMedCrossRef
30.
Venturi M, Di Lenarda R, Prati C, Breschi L (2005) An in vitro model to investigate filling of lateral canals. J Endod 31:877–881PubMedCrossRef
31.
Venturi M, Prati C, Capelli G, Falconi M, Breschi L (2003) A preliminary analysis of the morphology of lateral channels after root canal filling using a tooth-clearing technique. Int Endod J 36:54–63PubMedCrossRef
32.
Villegas JC, Yoshioka T, Kobayashi C, Suda H (2002) Obturation of accessory canals after four different final irrigation regimes. J Endod 28:534–536PubMedCrossRef
33.
Weis MV, Parashos P, Messer HH (2004) Effect of obturation technique on sealer cement thickness and dentinal tubule penetration. Int Endod J 37:653–663PubMedCrossRef
34.
Wu M-K, Özok AR, Wesselink PR (2000) Sealer distribution in root canals obturated by three techniques. Int Endod J 33:340–345PubMedCrossRef
Metadata
Title
The influence of smear layer in lateral channels filling
Authors
Angelica Bertacci
Chiara Baroni
Lorenzo Breschi
Mauro Venturi
Carlo Prati
Publication date
01-12-2007
Publisher
Springer-Verlag
Published in
Clinical Oral Investigations / Issue 4/2007
Print ISSN: 1432-6981
Electronic ISSN: 1436-3771
DOI
https://doi.org/10.1007/s00784-007-0127-y

Other articles of this Issue 4/2007

Clinical Oral Investigations 4/2007 Go to the issue

Original Article

In vitro analysis of the radiodensity of indirect composites and ceramic inlay systems and its influence on the detection of cement overhangs

Original Article

Supra-gingival microbiota in Sjögren’s syndrome

Original Article

Three-year survival of single- and two-surface ART restorations in a high-caries child population

Original Article

Reproducibility and validity of self-perceived oral health conditions

Original Article

Radiographic evaluation of the chronological development of permanent dentition in children infected with HIV

Original Article

Nonsurgical and surgical periodontal therapy in single-rooted teeth