Introduction: In recent years, significant developments have been taking place in caries removal and cavity preparation using laser in dentistry. As laser use is considered for cavity preparation, it is necessary to determine the quality of restoration margins. Glass ionomer cements have great applications for conservative restoration in the pediatric field.
The purpose of this in vitro study was to compare resin-modified glass ionomer restorations micro-leakage in cavities prepared by Er:YAG (Erbium-Doped Yttrium Aluminum Garnet) laser irradiation and conventional method in primary teeth.
Methods: This was an in vitro experimental study. Forty primary canine teeth were divided into 2 groups: group 1 represented cavities prepared by the no. 008 diamond bur, group 2 represented cavities prepared by Er:YAG laser. After cavity preparation, samples were restored by resin-modified glass ionomer. The teeth were thermocycled for 700 cycles, placed in 2% methylene blue for 24h and sectioned in the buccolingual direction. The degree of dye penetration was scored by 3 examiners. Data was analyzed using Mann-Whitney Test.
Results: There was no statistical difference in micro-leakage between the two modes of cavity preparation (P=0.862)
Conclusion: Since preparing conservative cavities is very important in pediatric dentistry, it is possible to use Er:YAG laser because of its novel and portable technology. However, further investigations of other restorative materials and other laser powers are required.
Gutknecht N, Apel C, Schafer C, Lampert F. Microleakage of composite filling in Er,Cr:YSGG laser-prepared class II cavities. Lasers Surg Med 2001; 28(4): 371-4.
Maiman TH. Stimulated optical radiation in ruby. Nature 1960; 187: 493-4.
Harris DM, R Pick. Laser Physics. in: Lasers In Dentistry.1st ed. LJ.Miserendino and RM. Pick (eds.), Chicago: Quintessence 1995. 27-38.
George R. Laser in dentistry-Review. Int J Dent Clin 2009; 1(1): 13-9.
Kotlow LA. Lasers in pediatric dentistry. Dent Clin North Am 2004; 48(4): 889-922.
Rossi RR, Aranha AC, Eduardo Cde P, Ferreira LS, Navarro RS, Zezell DM. Microleakage of glass ionomer restoration in cavities prepared by Er,Cr:YSGG laser irradiation in primary teeth. J Dent Child (Chic) 2008; 75(2): 151-7.
Pelagalli J, Gimbel CB. Investigational study of the use of Er:YAG laser versus dental drill for caries removal and cavity preparation - phase I. J Clin Lasser Med Surg 1997; 15(3): 109-15.
Cozean C, Arcoria CJ. Dentistry for the 21st century Er:YAG laser for teeth. J Am Dent Assoc 1997; 128(8): 1080-7.
Donavan TE, Daftary F. Clinical use of glass ionomer restorative materials. Compend Contin Educ Dent 1987; 8(3): 180.
Cooley RL, Robbins JW. Glass ionomer microleakage in Class V restorations. Gen Dent 1988; 36(2): 113-5.
Mount G, Hume W. Preservation and restoration of tooth structure. St. Louis; Mosby 2006; 220-50.
Powers John M, Sakaguchi Ronald L. Craig’s restorative dental materials. St. Louis; Mosby 2006; 216-217, 486.
Cortes O, Carcia C. Marginal microleakage around enamel and cementum surfaces of two compomers. J Clin Pediatr 1998; 28(4): 307-15.
Kohara EK, Hossain M, Kimura Y, Matsumoto K,Inoue M, Sasa R. Morphological and microleakage studies of the cavities prepared by Er:YAG laser irradiation primary teeth. J Clin Laser Med Surg 2002; 20(3): 141-7.
Delme KI, Deman PJ, Nammour S, De Moor RJ. Microleakage of class V glass ionomer restorations after conventional and Er:YAG laser preparation. Photomed Laser Surg 2006; 24(6): 715-22.
Salama FS. Effect of laser pretreated enamel and dentin of primary teeth on microleakage of different restorative materials. J Clin Pediatr Dent 1998; 22(4): 285-91.
Corona SA, Borsatto MC, Pecora JD, De SA Rocha RA, Ramos TS, Palma-Dibb RG. Assessing microleakage of different class V restorations after Er:YAG laser and bur preparation. J Oral Rehabil 2003; 30(10): 1008-14.
Chinelatti MA, Ramos RP, Chimello DT, Borsatto MC, Pécora JD, Palma-Dibb RG. Influence of the use of Er:YAG laser for cavity preparation and surface treatment in microleakage of resin-modified glass ionomer restorations. Oper Dent 2004; 29(4): 430-6.
Yaman BC, Guray BE, Dorter C, Gomeç Y, Yazıcıoglu O, Erdilek D. Effect of the erbium:yttrium-aluminum-garnet laser or diamond bur cavity preparation on the marginal microleakage of class V cavities restored with different adhesives and composite systems. Lasers Med Sci 2011; 16.
Yamada Y, Hossain M, Nakamura Y, Murakami Y, Matsumoto K. Microleakage of composite resin restoration in cavities prepared by Er:YAG laser irradiation in primary teeth. Eur J Paediatr Dent 2002; 3(1): 39-45.
Quo BC, Drummond JL, Koerber A, Fadavi S, Punwani I. Glass ionomer microleakage from preparations by an Er/YAG laser or a high-speed handpiece. J Dent 2002; 30(4): 141-6.
Oda M, Araujo RM, Oliviera DC. Microleakage in vitro study comparative of class V cavity preparations by high speed and Er:YAG laser restored with aesthetic materials. Rev inst scienc saude 2005; 23(1): 47-52.
Navarro RS, Gouw-Soares S, Cassoni A, Haypek P, Zezell DM, de Paula Eduardo C. The influence of erbium:yttrium-aluminum-garnet laser ablation with variable pulse width on morphology and microleakage of composite restorations. Lasers Med Sci 2010; 25(6): 881-9.
Hallett KB, Garcia-Godoy F. Microleakage of resin modified glass ionomer cement restoration: An in vitro study. Dent Mater 1993; 9(5): 306-11.
Castro A, Feigal RF. Microleakage of a new improved glass ionomer restorative material in primary and permanent teeth. Pediatr Dent 2002; 24(1): 23-8.
Reis LS, Chinelatti MA, Corona SA, Palma-Dibb RG, Borsatto MC. Influence of air abrasion preparation on microleakage in glass ionomer cement restorations. J Mater Sci Mater Med 2004; 15(11): 1213-6.
Tolidis K, Nobecourt A, Randall RC. Effect of a resin-modified glass ionomer liner on volumetric polymerization shrinkage of various composites. Dent Mater 1998; 14(6): 417-23.
Leinfelder KF, Freedman G, Pakroo JS. Postoperative sensitivity: bonded cavity liners revisited. Dent Today 2001; 20(11): 82-7.
Perdigão J, Geraldeli S, Hodges JS. Total-etch versus self-etch adhesive: effect on postoperative sensitivity. J Am Dent Assoc 2003; 134(12): 1621-9.
Aranha ACC, Turbino ML, Powell GL, Eduardo CP. Assessing microleakage of class V resin composite restorations after Er:YAG laser and bur preparation. Lasers Surg Med 2005; 37(2): 172–7.
Niu W, Eto JN, Kimura Y, Takeda FH, Matsumoto K. A study on microleakage after resin filling of Class V cavities prepared by Er:YAG laser. J Clin Laser Med Surg 1998; 16(4): 227-31.
Wright GZ, Mcconnell RJ, Keller U. Microleakage of class V composite restorations prepared conventionally with those prepared with an Er:YAG laser: a pilot study. Pediatr Dent 1993; 15(6): 425–6.
Borsatto MC, Corona SA, Chinelatti MA, Ramos RP, de Sá Rocha RA, Pecora JD, et al. Comparison of marginal microleakage of flowable composite restorations in primary molars prepared by high-speed carbide bur, Er:YAG laser, and air abrasion. J Dent Child (Chic) 2006; 73(2): 122-6.
Palma Dibb R.G, Corona SAM, Borsatto MC, Ferreira KC, Pecora JD, Ramos RP. Assessing microleakage on class V composite resin restorations after Er:YAG laser preparation varying the adhesive systems. J Clin Laser Med Surg 2002; 20(3): 129-33.
Baghalian A, Nakhjavani YB, Hooshmand T, Motahhary P, Bahramian H. Microleakage of Er:YAG laser and dental bur prepared cavities in primary teeth restored with different adhesive restorative materials. Lasers Med Sci 2013; 28(6):1453-60.
Olivi G, Genovese MD. Laser restorative dentistry in children and adolescents. Eur Arch Paediatr Dent 2011 Apr;12(2):68-78