 |
Publisher: Peytchinski Publishing Ltd.
ISSN: 1312-773X (Online)
Issue: 2019, vol. 25, issue1
Subject Area: Debtal Medicine
-
DOI: 10.5272/jimab.2019251.2419
Published online: 15 March 2019
Original article
J of IMAB. 2019 Jan-Mar;25(1):2419-2425
IN VITRO STUDY OF DENTAL COMPOSITE ROUGHNESS AND MICROLEAKAGE OF REPAIRED OBTURATIONS BY VARIOUS TECHNIQUES
Radostina Anastasova1
, Tsanka Dikova2, Vladimir Panov1,
1) Department of Conservative Dentistry and Oral Pathology, Faculty of Dental Medicine, Medical University of Varna
2) Department of Dental Materials Science and Propaedeutic of Prosthetic Dentistry, Faculty of Dental Medicine, Medical University of Varna, Bulgaria.
ABSTRACT:
Tooth restoration is one of the most common procedures in dental practice. The replacement of the whole restoration leads to loss of tooth structure and it’s weakening, there is a risk of pulp injury, it’s time and cost consuming. According to the minimally invasive approach when minimal defects have occurred, or the diagnosed defect is localized only in one region of the restoration, the repairmant is a better choice than the total replacement of the restoration.
The aim of the present study is to investigate the roughness of the surface of dental composites processed by different technics as well as to assess the micro-leakage between a cavity and composite walls and between old and new material after repairment.
In our study, 28 extracted human teeth (premolars and molars without visible cavity) were used for micro-leakage assessement.Class5 cavities were preparated and obturated on them. For artificial aging, the teeth were thermocycled. They were placed in a colorant - 2% methylene blue solution, then washed, cut horizontally through the crown with diamond separators and re-examined on a microscope. The degree of penetration of the dye was evaluated by measuring the penetration depth using the TourView program.
For roughness measurements20 samples (10 mm diameter and 4 mm thickness) were manufactured of micro-hybrid filling light curing material Essentia Universal (GC).The composite resin was put in a special plastic mold, then the surface was treated by different techniques and the surface roughness was measured by profile meter Mitotoyo SJ-210.
Our study showed that the different types of surface treatments of dental composites lead to different roughness, with the highest values being obtained after laser treatment, followed by turbine application and air abrasion. Microleakage in repaired obturations is influenced not only by the roughness of the surface of the "old" material but also by the chemical composition and physical properties (viscosity) of the used primer and adhesive. The smallest microleakage was obtained in group A, where the "old" composite was treated with a turbine, etched and applied only G-Premio Bond.
Keywords: dental composite, repairment, microleakage, composite roughness,
- Download FULL TEXT /PDF 1944 KB/
Please cite this article as: Anastasova R, Dikova Ts, Panov V. In vitro study of dental composite roughness and microleakage of repaired obturations by various techniques. J of IMAB. 2019 Jan-Mar;25(1):2419-2425. DOI: 10.5272/jimab.2019251.2419
Correspondence to: Radostina Anastasova, Department of Conservative Dentistry and Oral Pathology, Faculty of Dental Medicine, Medical University of Varna; 84, Tsar Osvoboditel Blvd. Varna 9000, Bulgaria; E-mail: radostdent@abv.bg
REFERENCES:
1. Mjor IA, Shen C, Eliasson S, Richter S. Placement and replacement of restorations in general dental practice in Iceland. Oper Dent. 2002 Mar-Apr;27(2):117-23. [PubMed]
2. Gordan VV, Riley JL 3rd, Geraldeli S, Rindal DB, Qvist V, Fellows JL, et al. Repair or replacement of defective restorations by dentists in The Dental Practice-Based Research Network. J Am Dent Assoc.2012 Jun;143(6):593-601. [PubMed] [Crossref]
3. Gordan VV, Shen C, Riley JL 3rd, Mjor IA. Two-year clinical evaluation of repair versus replacement of composite restorations. J EsthetRestor Dent. 2006; 18(3):144-53. [PubMed] [Crossref]
4. Bernardo M, Luis H, Martin MD, Leroux BG, Rue T, Leitão J, et al. Survival and reasons for failure of amalgam versus composite posterior restorations placed in a randomized clinical trial. J Am Dent Assoc.2007 Jun;138(6):775-83. [PubMed]
5. Manhart J, Chen HY, Hamm G, Hickel R. Review of the clinical survival of direct and indirect restorations in posterior teeth of the permanent dentition. Oper Dent. 2004 Sep-Oct;29(5):481-508. [PubMed]
6. Sharif MO, Fedorowicz Z, Tickle M, Brunton P. Repair or replacement of restorations: do we accept built in obsolescence or do we improve the evidence? Br Dent J. 2010 Aug;209(4):171-4. [PubMed] [Crossref]
7. Dalli M, Çolac H, Hamidi MM. Minimal intervention concept: a new paradigm for operative dentistry. J of Invest and Clin Dent. 2012;3(3):167-175.
8. Roberson TM, Heyman HO, Ritter AV. Repairing composite restorations. In: Sturdevant’s art and science of operative dentistry. St. Luis: Mosby. 2002. 497-498p.
9. Wilson NH, Setcos JC, Brunton PA. Repair versus replacement of restorations. In: Advences in operative dentistry. volume 2: Challenges of the future. Wilson NHF, Roulet JF, Fuzzi M. eds. Chicago: Quintessence publishing Company. 2001; pp.105-115.
10. Anastasova R, Panov Vl. Repairment of dental restorations. Varna Medical Forum. 2018;7(2):103-107.
11. Anusavice KJ. Philips’ Science of Dental Materials. 11th ed. London: Elsevier; 2003.806 p.
12. Dikova Ts.Dental Materials Science, Lectures and laboratory classes notes. Part II. Varna: MU-Varna; 2014.150 p.
13. Craig RG, O’Brien WJ, Powers JM. Dental Materials, Properties & Manipulation. 6th ed. St. Luis:< Mosby; 1996. 294 p.
14. Marinova-Takorova M, Panov Vl, Anastasova R. Frequency and Quality of the Repaired Restorations in Adults from Varna, Bulgaria. IJSR. 2016 Sept;5(9):358-361.
15. Moszner N, Klapdohr S. Nanotechnology for dental composites. Int J of Nanotechnology. 2004; 1(1/2):130-156. [Crossref]
16. G-Premio Bond, Safety Data Sheets. © GC EUROPE N.V. 2018. [Internet]
17. Composite primer, Safety Data Sheets. © GC EUROPE N.V. 2018. [Internet]. .
Received: 14 November 2018
Published online: 15 March 2019