title: Comparison of Micro-Leakage from Resin-Modified Glass Ionomer Restorations in Cavities Prepared by Er:YAG (Erbium-Doped Yttrium Aluminum Garnet) Laser and Conventional Method in Primary Teeth.
abstract: BACKGROUND
  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.
authors: Department of Pediatric Dentistry, Shahid Sadoughi University of Medical Sciences,Yazd, Iran.
authors: Zahra
authors: Z
authors: Bahrololoomi
authors: Department of Prosthodontics, Shahid Sadoughi University of Medical Siences,Yazd, Iran.
authors: Forooghosadat
authors: F
authors: Razavi
authors: Department of Pediatric Dentistry, Shahid Sadoughi University of Medical Sciences,Yazd, Iran.
authors: Ali Asghar
authors: AA
authors: Soleymani
keywords: Er:YAG lasers; dental leakages; primary tooth
references: Lasers Med Sci. 2010 Nov;25(6):881-9
references: 19802717
references: J Clin Laser Med Surg. 1997;15(3):109-15
references: 9612157
references: Dent Mater. 1998 Nov;14(6):417-23
references: 10483404
references: Lasers Med Sci. 2012 Jul;27(4):785-94
references: 21845398
references: J Clin Laser Med Surg. 2002 Jun;20(3):141-7
references: 12165127
references: Compendium. 1987 Mar;8(3):180-2, 184-8, 190
references: 3471333
references: Photomed Laser Surg. 2006 Dec;24(6):715-22
references: 17199471
references: J Am Dent Assoc. 2003 Dec;134(12):1621-9
references: 14719760
references: J Clin Laser Med Surg. 1998 Aug;16(4):227-31
references: 9796492
references: Eur J Paediatr Dent. 2002 Mar;3(1):39-45
references: 12871016
references: J Oral Rehabil. 2003 Oct;30(10):1008-14
references: 12974861
references: J Am Dent Assoc. 1997 Aug;128(8):1080-7
references: 9260417
references: Gen Dent. 1988 Mar-Apr;36(2):113-5
references: 3215486
references: Dent Today. 2001 Nov;20(11):82-7
references: 11715657
references: Dent Clin North Am. 2004 Oct;48(4):889-922, vii
references: 15464557
references: J Dent Child (Chic). 2008 May-Aug;75(2):151-7
references: 18647510
references: J Dent. 2002 May;30(4):141-6
references: 12450720
references: J Clin Pediatr Dent. 1998 Summer;22(4):285-91
references: 9796497
references: Eur Arch Paediatr Dent. 2011 Apr;12(2):68-78
references: 21473836
references: Pediatr Dent. 1993 Nov-Dec;15(6):425-6
references: 8153007
references: Lasers Surg Med. 2001;28(4):371-4
references: 11344519
references: Lasers Med Sci. 2013 Nov;28(6):1453-60
references: 23135785
references: J Clin Pediatr Dent. 1998 Summer;22(4):307-10
references: 9796500
references: Dent Mater. 1993 Sep;9(5):306-11
references: 7995482
references: J Dent Child (Chic). 2006 May-Aug;73(2):122-6
references: 16948375
references: J Clin Laser Med Surg. 2002 Jun;20(3):129-33
references: 12165125
references: Lasers Surg Med. 2005 Aug;37(2):172-7
references: 16037969
references: Oper Dent. 2004 Jul-Aug;29(4):430-6
references: 15279483
references: J Mater Sci Mater Med. 2004 Nov;15(11):1213-6
references: 15880930
references: Pediatr Dent. 2002 Jan-Feb;24(1):23-8
references: 11874054