Fakultas Kedokteran, Jurusan Kedokteran Gigi UNSOED - Indonesia
Fakultas Kedokteran, Jurusan Kedokteran Gigi UNSOED
PREHEATING EFFECT OF GIOMER’S SURFACE HARDNESS ON DIRECT RESTORATION
Irfan Dwiandhono
Aris Aji Kurniawan
Jenderal Soedirman University - Indonesia
Fakultas Kedokteran, Jurusan Kedokteran Gigi UNSOED
Rinawati Satrio
Jenderal Soedirman University - Indonesia
Fakultas Kedokteran, Jurusan Kedokteran Gigi UNSOED
Setiadi Warata Logamarta
Jenderal Soedirman University - Indonesia
Fakultas Kedokteran, Jurusan Kedokteran Gigi UNSOED
Muthiary Nitzschia Nur Iswary Winanto
Jenderal Soedirman University - Indonesia
Fakultas Kedokteran, Jurusan Kedokteran Gigi UNSOED
(*) Corresponding Author
Background: Composite resin is a material that is widely used for caries restoration, enamel abrasion, and aesthetic needs because of the good fit with teeth. Restorative materials that release fluoride ions may prolong the therapeutic and protective effects of the enamel. Nowadays, composite resins have been developed a new hybrid restorative material, named giomer. Giomer containing pre-reacted glass-ionomer (PRG) which can release and recharge fluoride ions. Composite resins have a disadvantage, a presence of shrinkage during polymerization, which can cause gaps between the tooth surface and composite resin. Preheating is carried out before irradiation with conventional oven. Preheating makes the composite resin stronger, reduces viscosity makes it easier to adapt and apply, and improves mechanical properties. This study aims to determine the effect of preheating on surface hardness.
Method: The research sample used is 27 pieces cylinder-shaped with 5 mm diameter and 2 mm depth. The number of treatments was divided into 3 treatment groups. The treatment groups were divided based on the preheating treatment temperature of 37°C, 60°C, and control group. The surface hardness test was carried out using Vicker's microhardness tester.
Result: The statistical One Way ANOVA test showed a significant result between the groups (p<0,05). LSD test (Least Significance Difference test) showed a significant result between the treatment temperature of 37°C, 60°C, and control group (p<0,05).
Conclusion: The result of the giomer surface hardness test with preheating showed a higher result than the control group. The preheating group with a temperature of 60°C had the highest result.
Keywords: Preheating; Giomer; Surface hardness
- Santoso L, Kristanti Y, Ratih DN. Perbedaan Kekerasan Mikro Giomer dan Kompomer setelah Prosedur In Office Bleaching Menggunakan Bahan Karbamid Peroksida 45%. J Kedokt Gigi. 2016;7(2):97-102.
- Griffin JD. Unique Characteristics of the Giomer Restorative System. Aegis Communications. 2014;10(3):4-5.
- Galvao MR, Caldas SGFR, Bagnato VS, Rastelli AN de S, Andrade MF de. Evaluation of Degree of Conversion and Hardness of Dental Composites Photo- activated with Different Light Guide Tips. Eur J Dent. 2013;7(1):86-93.
- Kaya MS, Bakkal M, Durmus A, Durmus Z. Structural and Mechanical Properties of A Giomer-Based Bulk Fill Restorative in Different Curing Conditions. J Appl Oral Sci. 2018;26:1- 10.
- Rusnac ME, Gasparik C, Irimie AI, Grecu AG, Mesaro§ A§, Dudea D. Giomers in Dentistry - at teh Boundary Between Dental Composites and Glass-Ionomers. Med Pharm Reports. 2019;92(2):123-8.
- Guglielmi C de AB, Calvo AFB, Tedesco TK, Mendes FM, Raggio DP. Contact with FluorideReleasing Restorative Materials Can Arrest Simulated Approximal Caries Lesion. J Nanomater. 2015;1(1):1-7.
- Mickenautsch S, Tyas MJ, Yengopal V, Oliveira LB, Bonecker M. Absence of carious lesions at margins of glass-ionomer cement (GIC) and resin-modified GIC restorations: a systematic review. Eur J Prosthodont Restor Dent. 2010 Sep;18(3):139-45.
- Dionysopoulos D, Tolidis K, Gerasimou P, Koliniotou-koumpia E. Effect of Preheating on The Film Thickness of Contemporary Composite Restorativematerials. J Dent Sci [Internet]. 2014;9(4):313-9.
- Kashi TSJ, Fereidouni F, Khoshroo K, Heidari S, Masaeli R, Mohammadian M. Effect of Preheating on the Microhardness of Nanohybrid Resin- based Composites. Biomed Technol. 2015;2(1):15-22.
- Didron PP, Ellakwa A, Swain M V. Effect of Preheat Temperatures on Mechanical Properties and Polymerization Contraction Stress of Dental Composites. 2013;2013(June):374-85.
- Nada K, El-Mowafy O. Effect of precuring warming on mechanical properties of restorative composites. Int J Dent. 2011;2011:536212.
- Leprince JG, Palin WM, Hadis MA, Devaux J, Leloup G. Progress in dimethacrylate-based dental composite technology and curing efficiency. Dent Mater [Internet]. 2012;29(2):139-56.
- Bds ems, elgayar il, a aak. Effect of Preheating On Microleakage And Microhardness Of Effect Of Preheating On Microleakage And Microhardness Of Composite Resin ( An In Vitro Study ). 2020;(April 2016).
- Jin mu, kim sk. Effect of pre-heating on some physical properties of composite resin. 2009;34(1):30-7.
- Daronch M, Rueggeberg FA, Goes MF De. Monomer Conversion of. 2005;
- Mohammadi N, Jafari-navimipour E, Kimyai S, Ajami A. Effect of pre-heating on the mechanical properties of silorane-based and methacrylate- based composites. 2016;8(4).
- Ribeiro BCI, Boaventura JMC, Brito-Gongalves J de, Rastelli AN de S, Bagnato VS, Saad JRC. Degree of conversion of nanofilled and microhybrid composite resins photo-activated by different generations of LEDs. J Appl Oral Sci. 2012;20(2):212-7.
