Emre KORKUT, Murat S. BOTSALI, Yağmur ŞENER

EVALUATION OF MECHANICAL AND FLUORIDE RELEASE PROPERTIES OF A BIOACTIVE GLASS ADDED GLASS IONOMER BASED FISSURE SEALANT

Aim: Bioactive glass has a wide range of medical and dental applications and is a potential filler component for dental restorative materials. The aim of this study was to examine the influence of adding bioactive glass to glass ionomer based fissure sealant on its mechanical properties and fluoride releasing ability. Material and Methods: Two experimental groups were prepared with BAG added to the powder component of the material at different ratios of %30 (BAG30) and %10 (BAG10) by weight. The glass ionomer based fissure sealant material without the addition of BAG was determined as the control group. Cylindrical shaped specimens (8mm x 2mm) were prepared from each group. Fluoride release, surface roughness and surface microhardness of the specimens were measured and the data were statistically analyzed using one way ANOVA and Wilcoxon Signed Rank tests. Results: There was no difference between fluoride releases of the materials except the first two days. BAG30 showed the highest surface microhardness and surface roughness values. There was no significant difference between surface microhardness values of BAG30 and BAG10. Conclusion: The results of the study showed that adding BAG did not adversely affect the mechanical and fluoride release properties of glass ionomer based fissure sealants. Keywords: Bioactive glass, fluoride release, surface roughness, surface microhardness BİYOAKTİF CAM İLAVE EDİLMİŞ CAM İYONOMER ESASLI FİSSÜR ÖRTÜCÜNÜN MEKANİK VE FLORİD SALINIM ÖZELLİKLERİNİN ARAŞTIRILMASI ÖZ Amaç: Biyoaktif cam, medikal ve dental uygula- malarda geniş bir kullanım alanına sahiptir ve dental restoratif materyaller için potansiyel bir doldurucu bile- şendir. Bu çalışmanın amacı, cam iyonomer esaslı fis- sür örtücüye biyoaktif cam ilave edilmesinin, materya- lin mekanik ve florid salınım özellikleri üzerine etkilerini araştırmaktır. Gereç ve Yöntem: Cam iyonomer esaslı fissür örtü- cünün toz kısmına ağırlıkça %30 (BAC30) ve %10 (BAC10) oranlarında biyoaktif cam ilave edilerek iki farklı deney grubu elde edildi. Biyoaktif cam ilave edilmeyen materyal ise kontrol grubu olarak belirlendi. Her grup için (8mm X 2mm) silindir şeklinde örnekler hazırlandı. Tüm örneklerin florid salınım değerleri, yü- zey pürüzlülükleri ve yüzey mikrosertlikleri belirlene- rek, veriler tek yönlü ANOVA ve Wilcoxon Signed Rank testleri kullanılarak istatistiksel olarak analiz edildi. Bulgular: İlk iki gün yapılan ölçümler haricinde, tüm günlerde yapılan ölçümlerde materyallerden yapılan florid salınım miktarları arasında anlamlı bir fark olmadığı bulundu. En yüksek yüzey pürüzlülüğü ve yüzey mikrosertlik değerlerinin BAC30 grubunda oldu- ğu gözlendi. BAC30 ve BAC10 gruplarında gözlenen yüzey pürüzlülüğü ve yüzey mikrosertlik değerleri ara- sında istatistiksel olarak anlamlı bir fark gözlenmedi. Sonuç: Çalışmadan elde edilen sonuçlar, biyoaktif cam ilave edilmesinin cam iyonomer esaslı fissür örtücü materyalin mekanik ve florid salınım özelliklerini olumsuz yönde etkilemediğini göstermiştir.Anahtar Kelimeler: Biyoaktif cam, florid salınımı, yüzey pürüzlülüğü, yüzey mikrosertliği

Anahtar Kelimeler:

Bioactive glass, fluoride release, surface roughness

PDF

___

1. Croll TP, Nicholson JW. Glass ionomer cements in pediatric dentistry: review of the literature. Pediatr Dent 2002;24:423-9.
2. Simonsen RJ, Neal RC. A review of the clinical application and performance of pit and fissure sealants. Aust Dent J 2011;56:45-58.
3. Berg JH, Croll TP. Glass ionomer restorative cement systems: an update. Pediatr Dent 2015;37:116-24.
4. Forsten L. Fluoride release and uptake by glass ionomer and related materials and clinical effect. Biomaterials 1998;19:503-8.
5. Haznedaroğlu E, Menteş A. Scanning electron microscope and microhardness evaluation of GIC sealant application after different enamel treatment procedures. Atatürk Üniv Diş Hek Fak Derg 2013;21:177-86.
6. Smith DC. Development of glass-ionomer cements systems. Biomaterials 1998;19:467-78.
7. Hench LL. The story of Bioglass. J Mater Sci: Mater Med 2006;17:967-78.
8. Kaur G, Pandey OP, Singh K, Homa D, Scott B, Pickrell G. A review of bioactive glasses: the structure, properties, fabrication, and apatite formation. J Biomed Mater Res 2014;102:254-74.
9. Hu S, Chang J, Liu M, Ning C. Study on antibacterial effect of 45S5 bioglass. J Mater Sci: Mater Med 2009;20:281-6.
10. Imazato S. Bio-active restorative materials with antibacterial effects: new dimension of innovation in restorative dentistry. Dent Mater J 2009;28:11-9.
11. Matsuya S, Matsuya Y, Ohta M. Structure of bioctive glass and its application to glass ionomer cement, Dent Mater J 1999;18:155-66.
12. Mehta AB, Kumari V, Jose R, Izadikhah V. Remi- neralization potential of bioactive glass and casein phospopeptide-amorphous calcium phosphate on initial carious lesion: An in-vitro pH-cycling study. J Conserv Dent 2014;17:3-7.
13. Chen S, Cai Y, Engqvist H, Xia W. Enhanced bioactivity of glass ionomer cement by incorporating calcium silicates. Biomatter 2016;6:e1123842.
14. Valanezhad A, Odatsu T, Udoh K, Shiraishi T, Sawase T, Watanabe I. Modification of resin modified glass ionomer cement by addition of bioactive glass nanoparticles. J Mater Sci: Mater Med 2016;27:e3.
15. Khvostenko D, Mitchell JC, Hilton TJ, Ferracane JL, Kruzic JJ. Mechanical performance of novel bioactive glass containing dental restorative composites. Dent Mater 2013;29:1139-48.
16. Profeta AC, Mannocci F, Foxton RM, Thompson I, Watson TF, Sauro S. Bioactive effects of a calcium/sodium phosphosilicate on the resin dentine interface: a microtensile bond strength, scanning electron microscopy, and confocal microscopy study. Eur J Oral Sci 2012;120:353-62.
17. Ana ID, Matsuya S, Ohta M, Ishikawa K. Effects of added bioactive glass on the setting and mechanical properties of resin-modified glass ionomer cement. Biomaterials 2003;24:3061-7.
18. Yang YS, Piao ZY, Kim MS, Lee KY, Kim NK, Kim MK. Acid neutralizing, mechanical and physical properties of pit and fissure sealants containing melt-derived 45S5 bioactive glass. Dent Mater 2013;29:1228-35.
19. Yang YS, Kwon SJ, Kim NK, Kim MK. Enamel Surface with Pit and Fissure Sealant Containing 45S5 Bioactive Glass. J Dent Res 2016;95:550-7.
20. Prabhakar AR, Prahlad D, Kumar SR. Antibacterial activity, fluoride release and physical properties of an antibiotic-modified glass ionomer cement. Pediatr Dent 2013;35:411-5.
21. Lucas EM, Arita K, Nishino M. Toughness, bonding and fluoride release properties of hydroxyapatite added glass ionomer cement. Biomaterials 2003;24:3787-94.
22. Tiwari S, Nandlal B. Comparative evaluation of fluoride release from hydroxyapatite incorporated and conventional glass ionomer cement: an in vitro study. J Indian Soc Pedod Prev Dent 2012;30:284-7.
23. De Caluwé T, Vercruysse CW, Ladik I, Convents R, Declercq H, Martens LC, Verbeeck RM. Addition of bioactive glass to glass ionomer cements: Effect on the physico-chemical properties and biocompatibility. Dent Mater 2017;33:e186-e203
24. Guida A, Hill RG, Towler Mr, Eramo S. Fluoride release from model glass ionomer cements. J Mater Sci: Mater Med 2002;13:645-9.
25. Paschoal MA, Gurgel CV, Rıos D, Magalhaes AC, Buzalaf MA, Machado MA. Fluoride release profile of a nanofilled resin-modified glass ionomer cement. Braz Dent J 2011;22:275-9.
26. Wiegand A, Buchalla W, Attin T. Review on fluoride releasing restorative materials fluoride release and uptake characteristics, antibacterial activity and influence on caries formation. Dent Mater 2007;23:343-62.
27. Ylı-Urpo H, Vallıttu PK, Narhı TO. Release of silica, calcium, phosphorus, and fluoride from glass ionomer cement containing bioactive glass. J Biomater Appl 2004;19:5-20.
28. De Witte AM, De Maeyer EA, Verbeeck RM. Surface roughening of glass ionomer cements by neutral NaF solutions. Biomaterials 2003;24:1995-2000.
29. Silva RC, Zuanon AC. Surface roughness of glass ionomer cements indicated for atraumatic resto- rative treatment. Braz Dent J 2006;17:106-9.
30.Yap AU, Cheang PH, Chay PL. Mechanical properties of two restorative reinforced glass-ionomer cements. J Oral Rehabil 2002;29:682-8.