Comparison of different doses of Er:YAG laser irradiation combined with MI-varnish on the inhibition of enamel demineralization
Purpose White spot lesions during fixed orthodontic treatment can be prevented by the application of lasers, fluoride varnishes or products containing calcium-phosphorus. This novel study aimed to evaluate the effect of different doses of Er:YAG laser irradiation combined with casein phosphopeptide-...
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Veröffentlicht in: | Lasers in dental science 2023-09, Vol.7 (3), p.139-146 |
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Format: | Artikel |
Sprache: | eng |
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Zusammenfassung: | Purpose
White spot lesions during fixed orthodontic treatment can be prevented by the application of lasers, fluoride varnishes or products containing calcium-phosphorus. This novel study aimed to evaluate the effect of different doses of Er:YAG laser irradiation combined with casein phosphopeptide-amorphous calcium phosphate varnish (MI varnish 5% NaF with 2% CPP-ACP) on the prevention of enamel demineralization around orthodontic brackets.
Methods
Buccal surface of eighty extracted human permanent premolars was prepared. Specimens were randomly divided into 8 groups (i.e., 10 per each): A: Er:YAG laser with 0.9 mm tip B: Group A + varnish C: Er:YAG laser with 7 mm tip D: Group C +varnish E: Er:YAG laser with 1.3 mm tip F: Group E+ varnish G: MI varnish H: control. Er:YAG laser was irradiated at energy densities as 10 J/cm
2
, 620 J/cm
2
or 300 J/cm
2
. The teeth were further subjected to 10-day pH cycling (6-h demineralization /18-h remineralization). The excrement of calcium and phosphorous ions was quantified by inductively coupled plasma (ICP).
Results
The laser treatments with 1.3, 0.9, and 7 mm diameter and the interaction of laser and MI varnish have no significant preventive effect against enamel demineralization, but MI varnish application (
p
value = 0/005) reduced enamel white spots.
Conclusions
There was a tendency to higher caries resistance by MI varnish application However, Er:YAG laser irradiation did not have a remarkable effect on demineralization control.
Clinical Relevance
MI varnish can control caries, whereas Er:YAG laser irradiation does not have a protective effect. |
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ISSN: | 2367-2587 2367-2587 |
DOI: | 10.1007/s41547-023-00192-3 |