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A feasibility study on the use of direct light silver stain compared with dark field microscopy for differential counting of subgingival plaque
Author(s) -
Coffey A.,
Coulter W. A.,
Linden G.J.
Publication year - 1995
Publication title -
journal of periodontal research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.31
H-Index - 83
eISSN - 1600-0765
pISSN - 0022-3484
DOI - 10.1111/j.1600-0765.1995.tb01285.x
Subject(s) - differential staining , stain , spirochaete , bright field microscopy , microscopy , staining , silver stain , periodontitis , dentistry , pathology , optical microscope , medicine , materials science , biology , bacteria , scanning electron microscope , composite material , genetics
Summary The purpose of the present study was to compare direct light microscopy using a silver stain, with dark field microscopy for differential counting of subgingival plaque samples from patients with periodontitis. The feasibility of using the staining method was assessed on subgingival plaque samples which were collected at 34 sites from patients with untreated adult periodontitis. Differential counts of plaque morphotypes assessed by both methods showed close agreement. The proportions of spirochaetes assessed by both methods were significantly associated with probing depth. The silver stain proved a simple, rapid and inexpensive method for differential counting of plaque composition. This method is suitable for possible use in general dental practice where smears could be made at the chair‐side and allowed to dry ready for staining and counting at the dentist's convenience using a simple light microscope. A permanent record is also produced which could allow for comparison of samples from before and after treatment and could be used as an aid to patient motivation in suitable cases.