Advances in Clinical and Experimental Medicine

Adv Clin Exp Med
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Advances in Clinical and Experimental Medicine

2018, vol. 27, nr 9, September, p. 1263–1270

doi: 10.17219/acem/70413

Publication type: original article

Language: English

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Creative Commons BY-NC-ND 3.0 Open Access

Comparison of the clinical and microbiological effects of antibiotic therapy in periodontal pockets following laser treatment: An in vivo study

Kinga Grzech-Leśniak1,A,B,C,D,E,F, Jacek Matys1,2,C,D, Marzena Dominiak1,E,F

1 Department of Dental Surgery, Wroclaw Medical University, Poland

2 Private Dental Practice, Wschowa, Poland


Background. Laser technology in periodontal therapy could help in reducing total bacterial count.
Objectives. The aim of this study was to evaluate the effects of pocket debridement using an erbium-doped yttrium aluminium garnet laser (Er:YAG laser – ERL), scaling and root planing (SRP) with photodynamic therapy (PDT), or SRP alone. Teeth vitality and soft tissue carbonization were also assessed.
Material and Methods. This study included 1,169 single-rooted teeth from 84 patients divided into 3 groups (n = 28). The G1 group had ERL with 40 mJ of energy, a frequency of 40 Hz and a fluence of 63.66 J/cm2. The G2 group had SRP + PDT (635 nm diode laser, 12 J of energy and irradiation time of 30 s) and a Toluidine Blue photosensitizer (PS) (application time of 60 s). The G3 group was administered SRP alone. In the 42 subjects (G1: n = 11, G2: n = 14 and G3: n = 17) with high amounts of Aggregatibacter actinomycetemcomitans (Aa), Porphyromonas gingivalis (Pg), Treponema denticola (Td) and Tannerella forsythia (Tf), additional 1-week antibiotic treatments with clindamycin or amoxicillin + clavulanic acid – in doses of 600 mg/day or 1000 mg/day, respectively – were prescribed 3 months after the therapy. Microbiological and clinical analyses of the probing depth (PD), recession (RC), plaque index (PI), bleeding on probing (BOP), and attachment loss (AT) were performed at baseline and at the follow-up of 3 months, 3 months and 1 week, and 6 months.
Results. Plaque index decreased in G1 after 3 months, 3 months and 1 week, and 6 months (p < 0.05) and was lower in G1 vs G2 after 3 months (p < 0.05). The reduction in BOP in G1 after 3 months and 1 week was higher in comparison with G2 or G3 (p < 0.02). Probing depth decreased in all groups (p < 0.05). We found a reduction in the percentage of sites with some bacteria after 3 months – Prevotella intermedia (Pi) (G1 and G2), Capnocytophaga gingivalis (Cg) and Eubacterium nucleatum (En) (G3), and after 3 months and 1 week with En, Td, Tf (G1, G2 and G3), Pi (G1 and G2), Aa, Peptostreptococcus micros (Pm), and Cg (G3), and with Pi (G1 and G2), Tf (G2), Pg, En (G2 and G3), and Pm (G3) after 6 months (p < 0.05). We observed no signs of carbonization or teeth injury.
Conclusion. Scaling and root planing + PDT and ERL may be an alternative therapy for chronic periodontitis.

Key words

chronic periodontitis, photodynamic therapy, antibacterial therapy, scaling and root planning, Er:YAG laser

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