Clinical evaluation of Er:YAG laser in the treatment of grade Ⅱ periodontitis with bifurcation lesions

doi:10.19439/j.sjos.2020.03.015

Abstract

Abstract: PURPOSE: To evaluate the clinical efficacy of erbium-doped yttrium aluminium garnet (Er: YAG) laser in the treatment of degree II bifurcation periodontitis. METHODS: Thirty patients(60 teeth) with grade II bifurcation lesions of chronic periodontitis were enrolled in this study. One week after supergingival scaling with ultrasound, the patients were randomly divided into experimental group: subgingival scaling with ultrasound and hand instruments + Er: YAG laser irradiation in periodontal pocket; control group: the contralateral homonymous teeth were treated with subgingival scaling with ultrasound and hand instruments alone. The changes of gingival index(GI), pocket depth(PD), horizontal probing depth (HPD) and attachment loss(AL) were compared between the two groups 12 and 20 weeks after treatment. SPSS 20.0 software package was used for statistical analysis. RESULTS: Periodontal clinical indexes(GI, PD, HPD, AL) of the experimental group and control group were significantly reduced compared with baseline at 12 and 20 weeks after treatment(P<0.05). At 12 and 20 weeks after treatment, PD in the experimental group was (4.03±0.48) mm and (3.43±0.45) mm, (4.82±0.55) mm and (4.27±0.36) mm in the control group, respectively. The reduction of PD in the experimental group was significantly greater than that in the control group (P<0.05). There was no significant difference in HPD between the two groups at 12 weeks after treatment. Twenty weeks after operation, HPD in the experimental group was found to be (3.01±0.34) mm and (3.78±0.29) mm in the control group. The decrease of HPD in the experimental group was significantly greater than that in the control group (P<0.05). GI and AL of the experimental group at 12 and 20 weeks were lower than those of the control group, but the difference was not statistically significant. CONCLUSIONS: Er: YAG laser is safe and effective in the treatment of chronic periodontitis patients with grade II root bifurcation lesions with significant clinical value.

Key words: Er: YAG laser, Periodontitis, Bifurcation lesions

CLC Number:

R781.4

WU Yu-zhuo, ZHOU Yan, MEI You-min, HUAN Hong, SUN Jing-wei. Clinical evaluation of Er:YAG laser in the treatment of grade Ⅱ periodontitis with bifurcation lesions[J]. Shanghai Journal of Stomatology, 2020, 29(3): 308-311.

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