title: Effectiveness of Er:YAG and CO2 lasers in the management of gingival melanin hyperpigmentation.
abstract: BACKGROUND
  Although clinical melanin pigmentation does not present itself as a medical problem or a disease entity, "black gums" is a major esthetic complaint for many people, who often requests cosmetic corrections. Gingival depigmentation can be carried out using many procedures; lasers of various types being a new addition. This study was undertaken to evaluate and compare the effectiveness of CO2 and Er:YAG lasers for the treatment of gingival melanin hyper pigmentation.
  
  
  METHODS
  Twenty young age and gender matched subjects were selected for a randomized split mouth depigmentation procedure using Er:YAG (Group A) and CO2 laser (Group B). Parameters evaluated were: Dummet index, Hedin melanin Index, Gingival and Plaque Index, time taken for the procedure, bleeding during the procedure, VAS scale for pain perception and wound healing and patient preference for the procedure. Wilcoxon signed rank test, Chi-square test, paired t test were used to analyze statistical significance between different variables.
  
  
  RESULTS
  CO2 laser treatment caused increased pain and delayed wound healing when compared to Er:YAG laser treatment.
  
  
  CONCLUSIONS
  Although both treatment modalities are highly effective depigmentation procedures, giving excellent esthetics results; when pain, wound healing and patient preferences were considered Er:YAG outscored CO2 Laser.
  
  
  CONCLUSIONS
  The effectiveness of the Er:YAG and CO2 laser for the treatment of gingival melanin depigmentation was evaluated clinically and histologically, although both treatment modalities are highly effective, giving excellent esthetics results, however, when pain and wound healing were considered Er:YAG was better than CO2 laser.
authors.forename: A
authors.initials: A
authors.lastname: Kishore
authors.affiliation: Department of Periodontology and Oral Implantology, Dr. D.Y Patil Dental College & Hospital, Dr. D.Y Patil Vidyapeeth (Deemed University), Pune-411018, India; Tel: +918983370741; e-mail: rkathariya@gmail.com.
authors.forename: R
authors.initials: R
authors.lastname: Kathariya
authors.forename: V
authors.initials: V
authors.lastname: Deshmukh
authors.forename: S
authors.initials: S
authors.lastname: Vaze
authors.forename: N
authors.initials: N
authors.lastname: Khalia
authors.forename: R
authors.initials: R
authors.lastname: Dandgaval