EFFECT OF DIFFERENT DENTIN TREATMENT PROTOCOLS ON SURFACE ROUGHNESS AND COMPOSITE BONDING

Okda, Raghda A.; El Kadi, Ahmed S.; AlAbbassy, Fayza H.

doi:10.21608/adjalexu.2020.122965

EFFECT OF DIFFERENT DENTIN TREATMENT PROTOCOLS ON SURFACE ROUGHNESS AND COMPOSITE BONDING

Document Type : Original Article

Authors

¹ Resident at Conservative Dentistry Department, Faculty of Dentistry, Alexandria University, Alexandria, Egypt.

² Professor of Conservative Dentistry, Faculty of Dentistry, Alexandria University, Alexandria, Egypt.

³ Professor of Dental Biomaterials Department, Faculty of Dentistry, Alexandria University, Alexandria, Egypt.

10.21608/adjalexu.2020.122965

Abstract

Introduction: With advances in technology, other options besides the traditional cavity preparation with diamond and carbide burs have emerged; among them are laser and sono-abrasive systems.
Objectives: The aim of this study was to compare in vitro the effect of (Er:YAG) laser with different radiation distances, sono-abrasion and rotary cutting on the surface roughness of dentin and the shear bond strength of resin composite to dentin using self-etching adhesive system.
Materials and methods: 50 extracted human molars were randomly divided into 5 groups (n=10) received the following treatments. Group 1: carbide bur, Group 2: diamond bur, Group 3: sono-abrasion, Group 4: contact Er:YAG laser, Group 5: non-contact Er:YAG laser. Average surface roughness (Ra) was determined with a profilometer. Specimens in all groups were treated with self-etching adhesive system and composite build ups were done with Filtek Z-250. Bonding of resin composites to the dentine specimens was tested in shear mode. For morphological analysis; two extra teeth from each group were examined using a scanning electron microscope (SEM).
Results:The shear bond strength of composite to the laser irradiated dentine (contact and non-contact) ranged from 6.64 ± 5.24 MPa and 6.29 ± 2.08 MPa respectively, and were significantly lower than the bond strength seen in other groups. However, the surface roughness of the laser irradiated dentine was significantly higher than that of the sono-abraded dentine and bur-cut dentine. SEM revealed that, the dentine surfaces irradiated by laser showed a scaly and rugged appearance and open dentinal tubules without smear layer production.
Conclusions: It was concluded that Er:YAG laser treatment reduced shear bond strength of resin composite to dentin in comparison with conventional treatment with high speed rotary and treatment with sono-abrasion. Different Er:YAG laser distance irradiations did not influence the shear bond strength of composite to dentin.

Keywords

Main Subjects

Conservative dentistry

References

1- Tyas MJ, Anusavice KJ, Frencken JE. Minimal intervention dentistry-a review. Int Dent J. 2000;50:1–12.
2- Stern RH, Sognnaes RF. Laser beam effect on dental hard tissues. J Dent Res. 1964;43:873.
3- Keller U, Hibst R. Experimental studies of the application of the Er:YAG laser on dentalhard substances. II. Light microscopic and SEM investigations. Lasers Surg Med. 1989; 9:345-51.
4- Lussi A, Megert B, Longbottom C, Reich E, Fransescut P. Clinical performance of a laser fluorescence device for detection of occlusal caries lesions. Eur J Oral Sci. 2001;109:14–9.
5- Ying D, Chuah GK, Hsu CY. Effect of Er:YAG laser and organic matrix on porosity changes in human enamel. J Dent. 2004;32:41–6.
6- Carrieri TC, Freitas PM, Navarro RS, Eduardo CP, Mori M. Adhesion of composite luting cement to Er:YAG laser- treated dentin. Lasers Med Sci. 2007;22:165–70.
7- Visuri SR, Gilbert JL, Wright DD, Wigdor HA, Walsh JT Jr. Shear strength of composite bonded to Er:YAG laser-prepared dentin. J Dent Res. 1996;75:599–605.
8- Botta SB, da Ana PA, Zezell DM, Pawers JM, Matos AB. Adhesion after erbium, chromium: yttrium-scandiumgallium-garnet laser application at three different irradiation conditions. Lasers Med Sci. 2009;24:67–73.
9- Armengol V, Jean A, Weiss P, Hamel H. Comparative in vitro study of the bond strength of composite to enamel and dentin obtained with laser irradiation or acid- etch. Lasers Med Sci. 1999;14:207–15.
10- Hugo B, Stassinakis A. Preparation and restoration of small interproximal carious lesions with sonic instruments. Pract Periodont Aesthet Dent. 1998;10:353–9.
11- Carvalho CA, Fagundes TC, Barata TJ, Trava-Airoldi VJ, Navarro MF. The use of CVD diamond burs for ultraconservative cavity preparations: A report of two cases. J Esthet Restor Dent. 2007;19:19-28.
12- Da Silva MA, Di Nicolo R, Barcellos DC, Batista GR, Pucci CR, Rocha Gomes Torres C, Borges AB. Influence of CVD diamond tips and Er:YAG laser irradiation on bonding of different adhesive systems to dentin. J Contemp Dent Pract. 2013;14:14-20.
13- Dunn WJ, Davis JT, Bush AC. Shear bond strength and SEM evaluation of composite bonded to Er:YAG laser-prepared dentin and enamel. Dent Mater. 2005;21:616-24.
14- Eguro T, Maeda T, Tanabe M, Otsuki M, Tanaka H. Adhesion of composite resins to enamel irradiated by the Er:YAG laser: Application of the ultrasonic scaler on irradiated surface. Lasers Surg Med. 2001;28:365–70.
15- Van Meerbeek B, De Munck J, Mattar D, Van Landuyt K, Lambrechts PB. Microtensile bond strengths of an etch & rinse and self-etch adhesive to enamel and dentins as a function of surface treatment. Oper Dent. 2003;28:647–60.
16- Kim YI, Hwang IN, Oh WM. Thermal change of the dentin by use of pulsed Nd: YAG laser. J Korean Acad Conserv Dent. 1996;21:218–26.
17- Cardoso MV, De Munck J, Coutinho E, Ermis RB, Van Landuyt K, de Carvalho RC, et al. Influence of Er,Cr:YSGG laser treatment on the microtensile bond strength of adhesives to dentin. J Adhes Dent. 2008;10:25–33.
18- Tay FR, Carvalho RM, Yiu CK, King NM, Zhang Y, Agee K, et al. Mechanical disruption of dentin collagen fibrils during resin-dentin testing. J Adhes Dent. 2000;2:175–92.
19- Apel C, Meister J, Gotz H, Duschner H, Gutknecht N. Structural changes in human dental enamel after subablative erbium laser irradiation and its potential use for caries prevention. Caries Res. 2005;39:65–70.
20- Secilmis A, Altintas S, Usumez A, Berk G. Evaluation of mineral content of dentin prepared by erbium,chromium: yttrium scandium gallium garnet laser. Lasers Med Sci. 2008;23:421–5.
21- Hossain M, Kimura Y, Nakamura Y, Yamada Y, Kinoshita JI, Matsumoto K. A study on acquired acid resistance of enamel and dentin irradiated by Er,Cr:YSGG Laser. J Clin Laser Med Surg. 2001;19:159-63.
22- Aranha ACC, Eduardo CP, Gutknecht N, Marques MM, Ramalho KM, Apel C.. Analysis of the interfacial micromorphology of adhesive systems in cavities prepared with Er,Cr:YSGG, Er:YAG laser and bur. Microsc Res Tech. 2007;70:745–51.
23- Daneshkazemi A, Modabber M, Davari A, Ravaii S. Comparative Study on Microtensile Bond Strength of Silorane-based Composite in Dentin Cavity Prepared with Erbium: Yttrium Aluminum Garnet Laser versus Bur-cut. J Int Oral Health. 2016;8:843-9.
24- Souza-Zaroni WC, Chinelatti MA, Delfino CS, Pécora JD, Palma-Dibb RG, Corona SA. Adhesion of a self-etching system to dental substrate prepared by Er: YAG laser or air abrasion. J Biomed Mater Res B Appl Biomater. 2008;86:321-9.
25- Koliniotou-Koumpia E, Kouros P, Dionysopoulos D, Zafiriadis L. Bonding strength of silorane-based composite to Er-YAG laser prepared dentin. Lasers Med Sci. 2015;30:509-16.

26- Verma M, Kumari P, Gupta R, Gill S, Gupta A. Comparative evaluation of surface topography of tooth prepared using erbium, chromium: Yttrium, scandium, gallium, garnet laser and bur and its clinical implications. J Indian Prosthodont Soc. 2015;15:23-8.
27- Chowdhury SR, Marques MM, Franzen R. Pedroni ANF, Trevelin LT, Abe GL, et al. Comparative ultrastructural analysis of Er:YAG laser scanner and conventional method for tooth cavity preparation. Laser Dent Sci. 2017;1:23-31.
28- De Oliveira MT, de Freitas PM, Carlos de Paula Eduardo, Ambrosano GMB, Giannini M. Influence of diamond sono-abrasion, air-abrasion and Er:YAG laser irradiation on bonding of different adhesive systems to dentin. Eur J Dent. 2007;1:158–66.