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Clinical Oral Investigations
Published in: Clinical Oral Investigations 6/2016

01-07-2016 | Original Article

Microbiological effects and recolonization patterns after adjunctive subgingival debridement with Er:YAG laser

Authors: Ignacio Sanz-Sánchez, Alberto Ortiz-Vigón, David Herrera, Mariano Sanz

Published in: Clinical Oral Investigations | Issue 6/2016

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Abstract

Objectives

The objective of this study was to assess the microbiological effects and recolonization patterns after non-surgical periodontal treatment protocol based on the adjunctive use of erbium-doped yttrium aluminium garnet (Er:YAG) laser.

Material and methods

Patients diagnosed with chronic periodontitis were randomly assigned to two different treatment protocols: test, full-mouth subgingival ultrasonic instrumentation followed by Er-YAG laser application 1 week later to sites with initial probing pocket depth ≥4.5 mm; and control, full-mouth ultrasonic subgingival instrumentation within 1 week. Clinical (at sampled sites) and microbiological (culture-based) parameters were recorded at baseline and 3 and 12 months. Microbiological variables included total counts, frequency of detection, proportions and counts of target species.

Results

Results from 19 test and 21 control patients were compared. Minor changes were observed for total colony-forming units, with no differences between groups. For the frequency of detection, a limited and similar impact in both groups was observed for the most prevalent (over 80 %) periodontal pathogens (Porphyromonas gingivalis, Prevotella intermedia, Fusobacterium nucleatum). For proportions, reductions in P. gingivalis occurred at 3 months, both in the test and control groups (from 16.3 to 10 % and 16 to 14.8 %, respectively), although these differences were not statistically significant. At 12 months, the test group showed a statistically significant greater reduction in probing depth for the sampled sites.

Conclusions

The adjunctive use of Er:YAG laser when compared with conventional ultrasonic debridement did not provide a microbiological added benefit.

Clinical relevance

Even though some clinical benefits with the adjunctive laser application were identified when comparing both treatment protocols, there were no differences in microbiological outcomes or in the bacterial recolonization patterns.
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Metadata
Title
Microbiological effects and recolonization patterns after adjunctive subgingival debridement with Er:YAG laser
Authors
Ignacio Sanz-Sánchez
Alberto Ortiz-Vigón
David Herrera
Mariano Sanz
Publication date
01-07-2016
Publisher
Springer Berlin Heidelberg
Published in
Clinical Oral Investigations / Issue 6/2016
Print ISSN: 1432-6981
Electronic ISSN: 1436-3771
DOI
https://doi.org/10.1007/s00784-015-1617-y

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