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Updated: Aug 30, 2026
Adjunctive Diode Laser Therapy and Probiotic Lactobacillus Therapy in the Treatment of Periodontitis and Peri-Implant Disease
Published on: May 9, 2022
[The effect of pulsed Nd:YAG laser used as an adjunct to subgingival scaling and root planning]
Zheng Wang1, Yi Ding, Yafei Wu
1Department of Oral Medicine, West China College of Stomatology, Sichuan University, Chengdu 610041, China.
Objective:
This study was to observe and compare the microbiological effects of laser therapy combined with ultrasonic subgingival scaling and root planning (SRP) versus SRP alone.
Methods:
26 contra lateral teeth were randomly assigned to the test group (laser + SRP) or the control group (SRP alone). Subgingival microbial samples were collected, cultured and analyzed at baseline, then repeated immediately after laser treatment at week 1, week 2 and week 4.
Results:
Although both groups had significant increase in G+/G- ratio (P < 0.01), the changes of G+ and G- were more obvious in the test group till week 1(P < 0.05). The total CFU of test group diminished significantly just after laser irradiation (P < 0.05). That revealed the laser therapy followed by SRP appeared to have a stronger effect on converting the subgingival micro-ecosystem to healthy status.
Conclusion:
Laser appeared to have a stronger bactericidal action in vivo. especially on the dark-pigmented G- rods associated with periodontal disease.
