Nd:YAG laser irradiation of darkened dental enamel by means of dentrifice use
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2018
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LASER DENTISTRY WORLD CONGRESS, 16th; DGL ANNUAL MEETING, 27th; INTERNATIONAL WALED CONGRESS, 6th
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Resumo
As the world population is growing
older, dental erosion became
a real concern on dentistry.
Optical Coherence Tomography
and X-Ray fluorescence were
used to analyze enamel samples
covered by black dentifrice as
photoabsorber irradiated with
NdYAG laser, then submitted to
an erosive cycling. Heat injury
risk in deeper tissue decreases
because of the dentifrice dark
pigment, when the most of photons
are absorbed in the surface.
Sixty Bmm2 blocks of bovine
enamel, were randomized into 4
groups: G1- untreated; G2- treated
with acidulated phosphate
fluoride (APF, [FJ::1.23%, pH::3.3 to
3.9); G3- irradiated with Nd:YAG
laser (1064nm, 0.6W, 10Hz- Lares
Research®) using a coal paste as
photoabsorber; G4- irradiated
with Nd:YAG laser (1064nm, 0.6W,
10Hz), using a black dentifrice
(Black is White, Curaprox®). All
samples were submitted to a
3-day erosive demineralization
(Citric acid 1%, pH::3.6, 5min,
2x/day) under agitation, and
remineralization cycling (artificial
saliva, pH::7, 120minJ. After
treatments and pH cycling, the
[Ca]/[P] ratio decreased in the
laser irradiated groups. The
samples were evaluated by OCT
before and after treatment and
after erosive cycling. OCT measurements
found smaller lesion
depths in laser irradiated groups
than in the other groups and
there were statistically significant
differences between G3 and G4
groups (p<0.05). Heating promoted
by Nd:YAG laser irradiation
changed the morphological and
crystallographic enamel surface
properties and has shown to be a
promissory alternative to prevent
erosion.
Como referenciar
PEREIRA, DAISA L.; GOMES, GABRIELA V.; SUGAHARA, VANESSA M.L.; SCAPIN, MARCOS A.; ANA, PATRICIA A.; ARANHA, ANA C.C.; ZAMATARO, CLAUDIA B.; ZEZELL, DENISE M. Nd:YAG laser irradiation of darkened dental enamel by means of dentrifice use. In: LASER DENTISTRY WORLD CONGRESS, 16th; DGL ANNUAL MEETING, 27th; INTERNATIONAL WALED CONGRESS, 6th, October 1-3, 2018, Aachen, Germany. Abstract... Aachen, Germany: International Society for Laser in Dentistry, 2018. p. 87-87. Disponível em: http://repositorio.ipen.br/handle/123456789/32772. Acesso em: 30 Dec 2025.
Esta referência é gerada automaticamente de acordo com as normas do estilo IPEN/SP (ABNT NBR 6023) e recomenda-se uma verificação final e ajustes caso necessário.