EFFECT OF CURING UNITS AND ADHESION STRATEGIES ON MICROLEAKAGE OF BULK-FILL COMPOSITES: AN IN VITRO STUDY

Year 2019, Volume: 29 Issue: 1, 74 - 79, 15.01.2019

Betul Memiş Özgül , G. Burcu Bostancı R. Ebru Tirali Sevi Burcak Çehreli

https://doi.org/10.17567/ataunidfd.522743

Cited By: 1

Abstract

ABSTRACT

 

Aim: This
study was performed to investigate the effects of different light-curing units
on microleakage of bulk-fill composites applied using different adhesion
strategies (self-etch or selective etch).

Material
and Methods: Twenty-six extracted third molar teeth were randomly
divided into 2 groups (n=13) according to the light-curing units used: either a
quartz tungsten halogen lamp or light-emitting diode lamp. Two standardized
occlusal cavities (2×3×3 mm) were prepared on each tooth to create subgroups
(self-etch or selective etch). Cavities in the elective etch subgroup were
etched prior to restoration procedures using 37% orthophosphoric acid. All
cavities were then restored with a nano-filler bulk-fill composite resin using
Universal Bond (All-Bond Universal; Bisco, Schaumburg, IL, USA) as an adhesive.
The light activations were performed according to the light-curing units. Teeth
were thermocycled 2500 times at 5°C–55°C, then immersed in 0.5% basic fuchsin
solution for 24 hours. Microleakage was quantitatively assessed using the
dye-penetration method along with quantitative computer-aided image
measurement. Data analysis was performed using the Mann–Whitney U test.

Results: The
selective etch group had significantly lower microleakage measurements than the
Universal Bond group (p<0.05) in both the quartz tungsten halogen lamp and
light-emitting diode lamp curing groups. However, there was no significant
difference between the self etch and selective etch subgroups according to the
light-curing units used (p>0.05).

Conclusions: The
selective etch method provides better adhesion when bulk-fill composites are
used regardless of the light-curing units being used. 

Keywords: Bulk-fill composites, LED, self-etch technique, selective etch
technique, QTH

IŞIK CIHAZLARI VE ADHEZYON STARTEJILERININ KÜTLESEL
IŞIKLANABILEN KOMPOZITLERIN MIKROSIZINTILARI ÜZERINE ETKILERI: IN-VITRO ÇALIŞMA

ÖZ

Amaç: Bu çalışma, farklı
ışık-polimerizasyon ünitelerinin farklı adhezyon stratejileri (self-etch veya
selektif etch) kullanılarak uygulanan kütlesel ışıklanabilen kompozitlerin
mikrosızıntısı üzerindeki etkilerini araştırmak amacıyla yapılmıştır.

Gereç ve
Yöntem: 26 adet çekilmiş üçüncü molar diş,
kullanılan ışık-polimerizasyon ünitelerine göre quartz tungsten halojen (QTH)
veya ışık yayan diyot (LED) olmak üzere 2 gruba (n=13) ayrıldı.  Alt grupları oluşturmak amacıyla (self-etch(SE)
veya selektif etch (SLE)) her diş üzerinde iki standart okluzal kavite (2 ×3 ×3
mm) hazır- landı. SLE alt grubundaki kaviteler, %37'lik ortofosforik asit
kullanılarak restorasyon prosedürlerinden önce hazırlandı. Tüm kaviteler daha
sonra Universal Bond (All-Bond Universal; Bisco, Schaumburg, IL, ABD) bağlayıcı
ajan kullanılarak bir nano dolduruculu kütlesel ışıklana- bilen kompozit
rezinle restore edildi. Işık aktivasyonları ait oldukları grubun
ışık-polimerizasyon ünitelerine göre ya- pıldı. Dişler, 5 °C-55 °C' de 2500 kez
termal döngüye ta- bi tutuldu daha sonra 24 saat boyunca %0.5 bazik fuksin
çözeltisinde bekletildi. Mikrosızıntı, boya-penetrasyon yöntemi kullanılarak,
bilgisayar destekli görüntü ölçümü ile kantitatif olarak değerlendirildi. Veri
analizi Mann-Whitney U testi kullanılarak yapıldı.

Bulgular:
Selektif etch (SLE) grubu için hem quartz tungsten halojen hem de ışık yayan diyot gruplarında Universal Bond
grubuna göre (p <0.05) anlamlı derecede düşük mikro-sızıntı ölçümleri
bulgulandı. Bununla birlikte kullanılan ışık-polimerizasyon ünitesine göre
self-etch ve selektif etch alt grupları arasında anlamlı fark görülmedi (p>
0.05).

Sonuç: SLE yöntemi,
kullanılan ışık cihazından bağımsız olarak kütlesel olarak ışıklanabilen
kompozitler kullanıldı- ğında daha iyi bir adezyon sağlamıştır.

Anahtar
Kelimeler:
Bulk-fill kompozitler, LED, self- etch tekniği, selektif etch tekniği, QTH

Keywords

Bulk-fill composites, LED, self-etch technique, selective etch technique

References

• 1-Mackenzie L, Shortall AC, Burke FJ . Direct posterior composites: a practical guide. Dent Update 2009; 36: 71-80.
• 2- Sakaguchi RL, Douglas WH, Peters MCRB. Curing light performance and polymerization of composite restorative materials. J Dent 1992; 20: 183-8.
• 3- Opdam NJ, Roeters JJ, Joosten M, Veeke OV. Porosities and voids in Class I restorations placed by six operators using a packable or syringable composite. Dent Mater 2002; 18: 58-63.
• 4- Roeters JJ, Shortall AC, Opdam NJ. Can a single composite resin serve all purposes? Br Dent J 2005; 199: 73-9.
• 5- Bucuta S, Ilie N. Light transmittance and micro-mechanical properties of bulk fill vs. conventional resin based composites. Clin Oral Investig 2014; 18: 1991-2000.
• 6- Zorzin J, Maier E, Harre S, Fey T, Belli R, Lohbauer U, et al. Bulk-fill resin composites: polymerization properties and extended light curing. Dent Mater 2015; 31: 293-301.
• 7- Fatma A, Dilek T, Funda Y. Dentine bağlanma ve değerlendirme metodları. Atatürk Üniv Diş Hek Fak Derg. 2011; Suppl: 4 : 49-56.
• 8- Rotta M, Bresciani P, Moura SK, Grande RH, Hilgert LA, Baratieri LN, et al. Effects of phosphoric acid pretreatment and substitution of bonding resin on bonding effectiveness of self-etching systems to enamel. J Adhes Dent 2007; 9: 537-45.
• 9- Van Meerbeek B, Yoshihara K, Yoshida Y, Mine A, De Munck J, Van Landuyt KL. State of the art of self-etch adhesives. Dent Mater 2011; 27: 17-28.
• 10- Wagner A, Wendler M, Petschelt A, Belli R, Lohbauer U. Bonding performance of universal adhesives in different etching modes. J Dent 2014; 42: 800-7.
• 11- Rosa WL, Piva E, Silva AF. Bond strength of universal adhesives: a systematic review and meta-analysis. J Dent 2015; 43: 765-76.
• 12- Castillo-Oyagüe R, Milward PJ, Martín-Cerrato A, Lynch CD. Effect of preoperative occlusal matrices on the Vickers microhardness of composite disks polymerized with QTH and LED lamps. J Esthet Restor Dent 2015; 27: 203-12.
• 13- Rahiotis C, Kakaboura A, Loukidis M, Vougiouklakis G. Curing efficiency of various types of light-curing units. Eur J Oral Sci 2004; 112: 89-94.
• 14- Cenci MS, Tenuta LM, Pereira-Cenci T, Del Bel Cury AA, ten Cate JM, Cury JA. Effect of microle- akage and fluoride on enamel-dentine deminera- lization around restorations. Caries Res 2008; 42: 369-79.
• 15- - Cehreli SB, Gungor HC, Karabulut E. Er,Cr:YSGG laser pretreatment of primary teeth for bonded fissure sealant application: a quantitative microleakage study. J Adhes Dent 2006; 8: 381-6.
• 16- Faria-e-Silva AL, Lima AF, Moraes RR, Piva E, Martins LR. Degree of conversion of etch-and-rinse and self-etch adhesives light-cured using QTH or LED. Oper Dent. 2010; 35: 649-54
• 17-El-Damanhoury H, Platt J. Polymerization shrinkage stress kinetics and related properties of bulk-fill resin composites. Oper Dent 2014; 39: 374-82.
• 18- Yap AU, Pandya M, Toh WS. Depth of cure of contemporary bulk-fill resin-based composites. Dent Mater J 2016; 35: 503-10.
• 19- Cehreli SB, Arikan S, Gulsahi K, Arhun N, Arman A, Sargon M. Effect of LED curing on marginal integrity of an ormocer-based sealant. J Dent Child (Chic) 2009; 76: 53-7.
• 20- Bani M, Tirali RE. Effect of new light curing units on microleakage and microhardness of resin sealants. Dent Mater J 2016; 35: 517-22.
• 21- Zakavi F, Golpasand Hagh L, Sadeghian S, Freckelton V, Daraeighadikolaei A, Ghanatir E, et al. Evaluation of microleakage of Class II dental composite resin restorations cured with LED or QTH dental curing light: blind, cluster randomized, in vitro cross sectional study. BMC Res Notes 2014; 7: 416.
• 22- Soares GP, Ambrosano GM, Lima DA, Marchi GM, Correr-Sobrinho L, Lovadino JR, et al. Effect of light polymerization time, mode, and thermal and mechanical load cycling on microleakage in resin composite restorations. Lasers Med Sci 2014; 29: 545-50.
• 23- Takamizawa T, Barkmeier WW, Tsujimoto A, Berry TP, Watanabe H, Erickson RL, Latta MA, Miyazaki M. Influence of different etching modes on bond strength and fatigue strength to dentin using universal adhesive systems. Dent Mater 2016; 32: e9-21.
• 24- Ikeda M, Kurokawa H, Sunada N, Tamura Y, Takimoto M, Murayama R, et al. Influence of previous acid etching on dentin bond strength of self-etch adhesives. J Oral Sci 2009; 51: 527-534.
• 25- Van Landuyt KL, Peumans M, De Munck J, Lambrechts P, Van Meerbeek B. Extension of a one-step self-etch adhesive into a multi-step adhesive. Dent Mater 2006; 22: 533-544.
• 26- Hanabusa M, Mine A, Kuboki T, Momoi Y, Van Ende A, Van Meerbeek B, et al. Bonding effectiveness of a new ‘multi-mode’ adhesive to enamel and dentine. J Dent 2012; 40: 475-84.
• 27- Loguercio AD, de Paula EA, Hass V, Luque-Martinez I, Reis A, Perdigão J. A new universal simplified adhesive: 36-month randomized double-blind clinical trial. J Dent 2015; 43: 1083-92.
• 28- Loguercio AD, Muñoz MA, Luque-Martinez I, Hass V, Reis A, Perdigão J. Does active application of universal adhesives to enamel in self-etch mode improve their performance? J Dent 2015; 43: 1060-70.
• 29- McHugh LEJ, Politi I, Al-Fodeh RS, Fleming GJP. Implications of resin-based composite (RBC) restoration on cuspal deflection and microleakage score in molar teeth: Placement protocol and restorative material. Dent Mater. 2017;33: e329-35.