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document
Clinical evaluation of Er , Cr : YSGG and GaAlAs laser therapy for treating dentine hypersensitivity : A randomized controlled clinical trial . OBJECTIVE The advent of dental lasers has raised another possible treatment option for dentine hypersensitivity ( DH ) and has become a research interest in the last decades . The aim of this randomized , controlled , double-blind , split mouth , clinical study was to evaluate and compare the desensitizing effects of erbium , chromium-doped : yttrium , scandium , gallium and garnet ( Er , Cr : YSGG ) to galium-aluminium-arsenide ( GaAlAs ) laser on DH . METHODS Fifty-one patients participated in this study for a total of 174 teeth . DH was assessed for all groups with a visual analog scale . For each patient , the teeth were randomized to three groups . In the diode laser group , sensitive teeth were irradiated with the GaAlAs laser at 8.5J/cm ( 2 ) energy density . In the Er , Cr : YSGG laser group , sensitive teeth were irradiated with Er , Cr : YSGG laser in the hard tissue mode using a none-contact probe at an energy level of 0.25W and repetition rate of 20Hz , 0 % water and 10 % air . In the control group no treatment was performed . Treatment time was 60s for GaAlAs laser and 30s for Er , Cr : YSGG laser . RESULTS When compared with the control group and baseline data , in both laser groups , laser irradiation provided a desensitizing effect immediately after treatment and this effect was maintained throughout the study ( p < 0.05 ) . No significant differences between Er , Cr : YSGG and GaAlAs laser groups were found at any follow-up examination ( p > 0.05 ) . CONCLUSION Based on these findings , it may be concluded that both Er , Cr : YSGG and GaAlAs lasers were effective in the treatment of DH following a single application .
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Intervention_Physical
Er , Cr : YSGG and GaAlAs laser therapy
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Intervention_Physical
erbium , chromium-doped : yttrium , scandium , gallium and garnet ( Er , Cr : YSGG ) to galium-aluminium-arsenide ( GaAlAs ) laser
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Intervention_Physical
irradiated with the GaAlAs laser at 8.5J/cm ( 2 ) energy density .
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Intervention_Physical
irradiated with Er , Cr : YSGG laser
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Intervention_Control
no treatment
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Intervention_Physical
Er , Cr : YSGG laser .
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Intervention_Physical
GaAlAs laser
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Intervention_Physical
Er , Cr : YSGG and GaAlAs lasers
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Outcome_Physical
dentine hypersensitivity :
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Outcome_Physical
dentine hypersensitivity ( DH )
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Outcome_Other
evaluate and compare
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Outcome_Physical
visual analog scale .
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Outcome_Physical
desensitizing effect
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Outcome_Other
effective
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Participant_Condition
dentine hypersensitivity :
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Participant_Sample-size
Fifty-one