Biological effects of a semiconductor diode laser on human periodontal ligament fibroblasts.

J Periodontal Implant Sci · 2010 · PMC2895515 · PMID 20607054

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highly significantno p-value reported

In a previous report, the difference in PDLFs proliferation on days 1 and 2 after laser irradiation was highly significant and decreased on day 3 [ 16 ].

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Quoted from the open-access full text in Europe PMC under the licence the publisher applied. The sentence is reproduced exactly as published; the emphasis is ours.