Gao YZ, Li Y, Chen SS, Feng B, Wang H, Wang Q. Treatment effects and periodontal status of chronic periodontitis after routine Er:YAG laser-assisted therapy. World J Clin Cases 2021; 9(32): 9762-9769 [PMID: 34877315 DOI: 10.12998/wjcc.v9.i32.9762]
Corresponding Author of This Article
Yong-Zhi Gao, MD, Chief Doctor, Department of Stomatology, The First Affiliated Hospital of Qiqihar Medical University, No. 26 Xiangyang Street, Fularji District, Qiqihar 161041, Heilongjiang Province, China. g13796878176@163.com
Research Domain of This Article
Dentistry, Oral Surgery & Medicine
Article-Type of This Article
Retrospective Study
Open-Access Policy of This Article
This article is an open-access article which was selected by an in-house editor and fully peer-reviewed by external reviewers. It is distributed in accordance with the Creative Commons Attribution Non Commercial (CC BY-NC 4.0) license, which permits others to distribute, remix, adapt, build upon this work non-commercially, and license their derivative works on different terms, provided the original work is properly cited and the use is non-commercial. See: http://creativecommons.org/licenses/by-nc/4.0/
World J Clin Cases. Nov 16, 2021; 9(32): 9762-9769 Published online Nov 16, 2021. doi: 10.12998/wjcc.v9.i32.9762
Table 1 Comparison of treatment effectiveness in the two groups, n (%)
Groups
Cases
Significant effect
Valid
Invalid
Total effectiveness
Study group
53
27 (50.94)
23 (43.40)
3 (5.66)
50 (94.34)
Control group
53
20 (37.74)
22 (41.51)
11 (20.75)
42 (79.25)
χ2
5.267
P value
0.022
Table 2 Comparison of periodontal status in the two groups (mean ± SD)
Group
Cases
PD in mm
CAL in mm
SBI
GI
PLI
Before therapy
Study group
53
5.28 ± 1.08
4.81 ± 0.79
3.37 ± 0.59
1.38 ± 0.40
2.05 ± 0.65
Control group
53
5.51 ± 1.14
5.09 ± 0.83
3.51 ± 0.62
1.41 ± 0.37
1.98 ± 0.70
t
1.344
1.779
1.280
0.401
0.533
P value
0.182
0.078
0.204
0.689
0.595
After therapy
Study group
53
2.97 ± 0.38
2.71 ± 0.64
2.07 ± 0.32
0.51 ± 0.11
1.29 ± 0.34
Control group
53
3.71 ± 0.42
3.60 ± 0.71
2.80 ± 0.44
0.78 ± 0.23
1.70 ± 0.51
t
9.512
6.778
9.768
7.710
4.605
P value
0.000
0.000
0.000
0.000
0.000
Table 3 Comparison of inflammatory factors in gingival crevicular fluid from the two groups (mean ± SD)
Groups
Cases
TNF-α in ng/mL
IL-6 in ng/mL
IL-8 in pg/mL
Before therapy
Study group
53
7.82 ± 3.43
11.67 ± 2.59
12.12 ± 3.19
Control group
53
9.06 ± 3.89
12.13 ± 2.97
10.99 ± 3.30
t
1.741
0.850
1.792
P value
0.085
0.397
0.076
After therapy
Study group
53
2.04 ± 0.89
4.60 ± 1.26
3.15 ± 1.08
Control group
53
3.11 ± 1.07
6.25 ± 1.41
4.64 ± 1.23
t
5.597
7.182
6.627
P value
0.000
0.000
0.000
Table 4 Comparison of colony forming units in the two groups (mean ± SD, × 104/mL)
Groups
Cases
Before therapy
After therapy
t
P value
Study group
53
367.91 ± 74.32
36.09 ± 15.26
31.840
0.000
Control group
53
371.09 ± 80.25
45.89 ± 18.08
28.780
0.000
t
0.212
2.988
P value
0.833
0.004
Citation: Gao YZ, Li Y, Chen SS, Feng B, Wang H, Wang Q. Treatment effects and periodontal status of chronic periodontitis after routine Er:YAG laser-assisted therapy. World J Clin Cases 2021; 9(32): 9762-9769