European Archives of Paediatric Dentistry

, Volume 17, Issue 1, pp 59–64 | Cite as

Inhibition of enamel demineralisation using “Nd-YAG and diode laser assisted fluoride therapy”

  • B. R. ChandEmail author
  • S. Kulkarni
  • P. Mishra
Original Scientific Article



This in vitro study was to evaluate the irradiation efficacy of the Diode laser and the Nd-YAG laser either un-assisted or assisted by acidulated phosphate fluoride (APF) treatment on enamel’s acid resistance.


Seventy-two enamel samples, obtained from 12 extracted human molars, were randomly assigned to 6 groups as follows: (1) Control (C); (2) Exposed to APF gel (F); (3) Diode laser (DL); (4) Irradiated with Diode laser through APF gel (DL/F); (5) Nd-YAG laser (NL) and (6) Irradiated with Nd-YAG laser through APF gel (NL/F). The specimens were individually demineralised in an acidified hydroxyethylcellulose system, and the acid resistance was evaluated by determining the calcium ion dissolution using atomic absorption spectrometry.


The average concentration of the calcium ion determined in groups 1 to 6 was 901, 757, 736, 592, 497 and 416 parts per million micrograms/gram, respectively. The results showed that demineralisation in the NL/F group was significantly less than the other groups and the control group was significantly greater than the other groups (P < 0.001).


The effect of Nd-YAG laser irradiation, used alone or in combination with APF, in decreasing the enamel demineralisation was greater than all the other groups.


Enamel Lasers Demineralisation Atomic absorption spectrometry 


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Copyright information

© European Academy of Paediatric Dentistry 2015

Authors and Affiliations

  1. 1.Department of Pedodontics and Preventive DentistrySri Aurobindo College of DentistryIndoreIndia
  2. 2.Department of Public Health DentistrySri Aurobindo College of DentistryIndoreIndia

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