title: KTP laser on microleakage of compomer restorations in Class V restorations.
abstract: OBJECTIVE
  To evaluate the effects of pulsed KTP (potassium-titanyl-phosphate) laser on decrease of dentinal microleakage of compomer restorations in primary teeth.
  
  
  METHODS
  Twenty four primary molars were selected for the study After Class V cavity preparations in buccal and lingual surfaces, teeth were divided into three groups: Group 1: Control, Group 2: 1 WKTP laser Group 3: 1.5 WKTP laser. Then cavities were restored with compomer and teeth were thermocycled to 500 cycles, isolated and immersed in 0.5% basic fuchsin for 24 hours. Teeth were rinsed, dried, and sectioned, and microleakage was assessed by dye penetration at the occlusal and gingival surface of the teeth with stereomicroscope (40X). The data were analyzed with Kruskal-Wallis, Mann-Whitney U and Wilcoxon tests.
  
  
  RESULTS
  When the scores of microleakage at the gingival margins of the groups were compared, the differences among the groups were found to be statistically significant (p<0.05). At the occlusal margins of the groups, there were no statistical differences (p>0.05). Comparing the gingival and the occlusal margins in the each group, statistically significant differences existed in the Groups 1 and 3 (p<0.05).
  
  
  CONCLUSIONS
  KTP laser is able to seal dentinal tubules and consequently reduce microleakage towards pulp in primary teeth.
authors.affiliation: Department of Pediatric Dentistry, Faculty of Dentistry, Cumhuriyet University, Sivas, Turkey. arife_sozen@yahoo.com
authors.forename: Arife
authors.initials: A
authors.lastname: Kapdan
authors.affiliation: Department of Endodontics, Faculty of Dentistry, Akdeniz University, Antalya, Turkey.
authors.forename: Alper
authors.initials: A
authors.lastname: Kuştarci
authors.affiliation: Department of Restorative Dentistry, Faculty of Dentistry, Cumhuriyet University, Sivas, Turkey.
authors.forename: Alper
authors.initials: A
authors.lastname: Kapdan
authors.affiliation: Department of Pediatric Dentistry, Faculty of Dentistry, Cumhuriyet University, Sivas, Turkey.
authors.forename: Fatih
authors.initials: F
authors.lastname: Oznurhan
authors.affiliation: Department of Pediatric Dentistry, Faculty of Dentistry, Cumhuriyet University, Sivas, Turkey.
authors.forename: Murat
authors.initials: M
authors.lastname: Unal
authors.affiliation: Department of Pediatric Dentistry, Faculty of Dentistry, Cumhuriyet University, Sivas, Turkey.
authors.forename: Serkan
authors.initials: S
authors.lastname: Aksoy
mesh_terms: D020770:Compomers; D003763:Dental Leakage / Q000517:prevention & control*; D003793:Dental Restoration, Permanent / Q000379:methods*; D003799:Dental Stress Analysis; D003806:Dentin Permeability; D006801:Humans; D053844:Lasers, Solid-State / Q000627:therapeutic use*; D008963:Molar; D010710:Phosphates; D018709:Statistics, Nonparametric; D014025:Titanium; D014094:Tooth, Deciduous
chemical_list: D020770:Compomers; D010710:Phosphates; C064806:potassium titanylphosphate; D014025:Titanium