Evaluation of efficacy of different surface treatment protocols by laser fluorescence: an invitro study
Dental Oral and Craniofacial Research
Demineralization and remineralisation of enamel are occurring concomitantly in oral cavity. Fluorides and other remineralizing pastes alone or along with high powered lasers to harnesses the remineralization potentiality of the tooth have been used with varying results. Low powered lasers like aluminium gallium arsenide lasers are being evaluated to bring about caries inhibition. Aim: The aim of the study was to evaluate caries inhibitory potentiality of aluminium gallium arsenide laser.
... l and method: 54 extracted intact posterior teeth were selected. They were sectioned mesio -distally and coated with nail varnish so to obtain windows of 3mm X 3mm.The samples were then divided so that each group and sub group had 6 samples each. Group 1: Control; Group 2 A:Laser irradiation with 2 watts for 30 secs; Group 2 B: Laser Irradiation with 3 watts for 30 secs; Group 3: Enafix Paste for 1 hour; Group 4: CPP-ACPF remineralizing paste for 1hour; Group 5 A: Laser Irradiation 2 watts for 30 secs followed by application of Enafix for 1 hour; Group 5 B:Laser Irradiation 3 watts for 30 secs followed by application of Enafix for 1 hour; Group 6 A: Laser Irradiation 2 watts for 30 secs followed by application of CPP-ACPF for 1 hour; Group 6 B: Laser Irradiation 3 watts for 30 secs followed by application of CPP-ACPF for 1 hour. The control group had no treatment done on it and baseline values recorded by laser fluorescence device. All Groups except control group were demineralised by 30% phosphoric acid for 20 secs and laser fluorescence values noted. The groups were surface treated and the laser fluorescence readings were recorded. Results: The data was collected and statistical analysis was done by paired 't' test to compare control and test goup and one way analysis of variance ANOVA test. A significant difference between three or more sample means was revealed by an ANOVA, hence for multiple comparison Tukey HSD Post hoc Tests were undertaken. Conclusion: The laser irradiation of 2 watts followed by CPP-ACPF application was observed as the most effective surface treatment modality.