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- W2115665637 abstract "Abstract Objectives: The aim of the present study was to compare the effectiveness of subgingival calculus removal from periodontally involved root surfaces with an Er:YAG laser compared to hand instrumentation in situ. Methods: The mesial and distal surfaces of 30 single‐rooted teeth with untreated periodontitis were treated either by hand instrumentation (scaling and root planing (SRP)) or by Er:YAG laser irradiation with the aim of achieving a calculus‐free root surface. Subgingival plaque samples were obtained before and immediately after treatment for microbiological evaluation by culture and DNA probe analysis. The teeth were extracted and the residual calculus was measured by means of digitized planimetry. The morphology of the root surface was evaluated by scanning electron microscopy, and undecalcified sections were analyzed to determine residual calculus and the extent of cementum removal following both treatments. Results: Following laser irradiation, 68.4±14.4% of the root surface was calculus free in contrast to 93.9±3.7% after SRP when both treatments were performed for the same time (2:15±1:00 min). If laser irradiation was allowed twice the time used for hand instrumentation, 83.3±5.7% of the root surface was devoid of calculus. The effectiveness of both treatments was not related to initial probing depth. The histologic evaluation showed that after SRP 73.2% of root dentin was completely denuded from cementum, while only a minimal cementum reduction was apparent after laser irradiation. Both treatment modalities resulted in a similar reduction of periodontopathogens. Discussion: The present investigation could demonstrate the in vivo capability of the Er:YAG laser to remove calculus from periodontally involved root surfaces, although the effectiveness did not reach that achieved by hand instrumentation. The lack of cementum removal in contrast to SRP may qualify the laser as an alternative approach during supportive periodontal therapy." @default.
- W2115665637 created "2016-06-24" @default.
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- W2115665637 date "2003-06-01" @default.
- W2115665637 modified "2023-10-15" @default.
- W2115665637 title "Efficacy of subgingival calculus removal with Er:YAG laser compared to mechanical debridement: an in situ study" @default.
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- W2115665637 doi "https://doi.org/10.1034/j.1600-051x.2003.00052.x" @default.
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