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jsmc-10036


CORONAL SEALING ABILITY OF COPALITE VARNISH WITH DIFFERENT INTERMEDIATE RESTORATIONS AS AN INTRA-ORIFICE BARRIER IN ENDODONTICALLY TREATED TEETH. A COMPARATIVE IN-VITRO STUDY


Bestoon Mohammad Faraj *, Hawzhen Masud Mohammed * and Kali Masud Mohammed *


* Conservative Department, School of Dentistry, Faculty of Medical Science, University of Sulaimani.


Submitted: 6/1/2013; Accepted: 26/5/2013; Published 1/12/2013


ABSTRACT


Background

Coronal restorations having an effect on the outcome of root canal treatment.

Objectives

The aim of this study was to evaluate and compare sealing ability of three cement base materials with and without cavity varnish in the orifice of root canal systems after root-canal treatment.

Methods

The palatal root of extracted human maxillary first molar teeth were selected, after preparation and obturation three millimeters of coronal gutta-percha were removed from the coronal aspect of the root canal and divided randomly into six groups (6 roots each). Root canal orifices were restored with conventional glass ionomer cement, zinc polycarboxylate cement and zinc phosphate cement bases with and without cavity varnish. All the specimens were thermocycled for 100 cycles at 7°C – 55°C for 60 sec in each bath. They were immersed in the 1% methylene blue solution for 7 days, and then sectioned into longitudinal sections. The extent of dye penetration was measured using stereomicroscope. Data were analyzed statistically.

Results

All the materials leaked at the interface of restorative material-dentin wall. Glass ionomer cement with varnish sealed significantly better than the other groups.

Conclusion

Placement of a suitable intra-orifice barrier, like conventional glass ionomer cement with a layer of copalite cavity varnish over it, may help minimize coronal microleakage in endodontically treated teeth.

KEYWORDS

Glass-ionomer; Zinc polycarboxylate; zinc phosphate; Copalite cavity varnish; Microleakage.

References 

1- Siqueira JF Jr, Rocas IN, Lopes HP, de Uzeda M. Coronal leakage of two root canal sealers containing calcium hydroxide after exposure to human saliva. J Endod 1999; 25: 14-16. 

2- Ray HA, Trope M. Periapical status of endodontically treated teeth in relation to the technical quality of the root filling and the coronal restoration. Int Endod J 1995; 28:8-12.

3- Singh SV, Nikhil V, Yadav S. Effect of cavity varnish and intermediate restorative material on coronal microleakage in endodontically treated tooth. Indian J Dent Res 2011; 22:103-106.

4- Gupta K V, Verma P, Trivedi A. Evaluation of microleakage of various restorative materials: An in vitro study. J Life Sci, 2011; 3: 29-33.

5- Uranga A, Blum JY, Esber S, Parahy E, Prado C.: A comparative study of four coronal obturation materials in endodontic treatment. J  Endod. 1999 Mar; 25 (3):178-80.

6- Imura N, Otani SM, Campos MJA, Jardim EG, Zuolo ML.: Bacterial penetration through temporary restorative materials in root-canal-treated teeth in vitro. Inter Endod J 1997 30,381-385

7- Hamidreza Y, Mohammad S, Mahsa E, Shahriar S, Marzieh A, Yones P.  An In Vitro Comparison of Coronal Microleakage of Three Orifice Barriers Filling Materials. IEJ Iranian Endodontic Journal 2012;7:156-160.

8- Wolcott S, Barr J. Temporary restorations in endodontics.a review.Compend Contin Educ Dent 2006; 27:599-600.

9- Derkson. G, Pashley. D.H, Derkson. M. Microleakage measurement of selected restorative materials: A new in vitro method. J Prosthet Dent 1986; 56:435-40.

10- Craig RG, Powers JM. Restorative Dental Materials. 11th ed. St Louis, MO: Mosby 2002; 636-656.

11- Trowbridge M. Model systems for determining biologic effects of micro leakage. Oper Dent 1987; 12: 164-72.

12- C, Kalvia M, Lambrianidis T, Kosti E (2005).An in vitro comparison of the sealing ability of three endodontic sealers used in canals with iatrogenic enlargement of the apical constriction. J Endod 31,190-93.

13- Shipper G, Orstavik D, Teixeira FB, Trope M. An evaluation of microbial leakage in roots filled with a thermoplastic synthetic polymer-based root canal filling material (Resilon). J Endod 2004; 30:342–47.

14-Roghanizad N, Jones JJ. Evaluation of coronal microleakage after endodontic treatment. J Endodon 1996; 22:471-3.  

15- Singh SV, Nikhil V, Yadav S. Effect of cavity varnish and intermediate restorative material on coronal microleakage in endodontically treated tooth. Indian J Dent Res 2011; 22:103-6.

16- Belli S, Zhang Y, Pereira PN, Pashley DH. Adhesive sealing of the pulp chamber. J Endod 2001;27:521-26.

17- Lawley GR, Schindler WG, Walker WA 3rd, Kolodrubetz D. Evaluation of ultrasonically placed MTA and fracture resistance with intracanal composite resin in a model of apexification. J Endod 2004;30:167-72.

18-Verissimo DM,Do Vale MS. Methodologies for assessment of apical and coronal leakage of endodontic filling materials: a critical review. J. Oral Sci 2006; 48:93-8

19- Bae KS, Baumgartner JC, Nakata TT. Development of an anaerobic bacterial leakage model. J Endod 1998; 24:233–5.

20- Uranga A, Blum JY, Esber S, Parahy E, Prado C. A comparative study of four coronal obturation materials in endodontic treatment. J Endod 1993; 25: 178-180.

21- Grim G.A, Mattingly S.L. Evaluation of two methods for assessing marginal leakage.J Prosthet Dent 1981;45;190-93.

22- Ahlberg KMF,Assavanop P,Tay WM.A comparison of the apical dye penetration patterns shown by methylene blue and India ink in root-filled teeth. Int Endod J 1995; 28:30-4. 

23- Jeffery E. Turner, Ronald W. Anderson, David H. Pashley. Microleakage of temporary restorations in teeth restored with amalgam.J Endod.1990:16;1;1-4.

24- Ozturk B, Ozer F, Belli S. An in vitro comparison of adhesive systems to seal pulp chamber walls. Int Endo J 2004; 37:297-306.

25- Manders CA, Garcia-Godoy F, Barnwell GM. Effect of a copal varnish, ZOE or glass ionomer cement bases on microleakage of amalgam restorations. Am J Dent. 1990 Apr;3(2):63-6.