{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,11,5]],"date-time":"2025-11-05T11:01:50Z","timestamp":1762340510699,"version":"build-2065373602"},"reference-count":0,"publisher":"Wiley","issue":"8S","license":[{"start":{"date-parts":[[1993,8,1]],"date-time":"1993-08-01T00:00:00Z","timestamp":744163200000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Journal of Periodontology"],"published-print":{"date-parts":[[1993,8]]},"abstract":"<jats:p>P<jats:sc>eriodontal disease progression requires<\/jats:sc> the simultaneous presence of high numbers of pathogens, low numbers of compatible or beneficial species, a conducive local environment, and a susceptible host. Effective therapy acts by altering one or more of these factors. Data from an ongoing study were used to examine the biological basis of treatment success or failure. Seventeen subjects showing disease progression were treated by Widman flap surgery at deep sites, scaling at shallow sites, and 1 of 4 randomlyassigned, systemically\u2010administered adjunctive agents including amoxicillin\/clavulanate potassium (Au) (n = 3), ibuprofen (n = 3), tetracycline (n = 9), or a placebo (n = 2). Clinical measurements and microbiological samples (enumerated using DNA probes) taken from the mesial aspect of each tooth pre\u2010treatment and 12 months post\u2010treatment were compared and 418 pre\u2010 and 418 post\u2010therapy plaque samples were enumerated. Overall, the 4 treatments resulted in pocket depth reduction and \u201cgain\u201d in attachment. After therapy, the percentage of sites colonized by <jats:italic>Porphyromonas gingivalis, Prevotella intermedia, Prevotella nigrescens<\/jats:italic>, and <jats:italic>Bacteroides forsythus<\/jats:italic> was decreased and counts &gt; 10<jats:sup>6<\/jats:sup> were less frequent. Large attachment level gains were accompanied by major decreases in these species and were more frequent in subjects receiving antibiotics. A small number of sites in each treatment group became deeper and\/or lost attachment. More than half of these sites were detected in 2 subjects who were older (65 vs. 44), had higher serum antibody to Actinobacillus actinomycetemcomitans serotype a (506 vs. 125 ELISA units), <jats:italic>A. actinomycetemcomitans<\/jats:italic> serotype b (518 vs. 130), and <jats:italic>Campylobacter rectus<\/jats:italic> (39 vs. 18). They also had the lowest mean total viable subgingival counts (1.1 vs. 12.3 \u00d7 10<jats:sup>6<\/jats:sup>) and the lowest counts of each species pre\u2010therapy. In the total subject group, increased mean counts of <jats:italic>P. gingivalis<\/jats:italic> and <jats:italic>B. forsythus<\/jats:italic> were seen at sites showing attachment loss &gt; 1 mm after therapy, while counts decreased at sites showing no attachment change or \u201cgain\u201d &gt; 1 mm. <jats:italic>J Periodontol 1993; 64:754\u2013759.<\/jats:italic><\/jats:p>","DOI":"10.1902\/jop.1993.64.8s.754","type":"journal-article","created":{"date-parts":[[2012,3,21]],"date-time":"2012-03-21T21:41:42Z","timestamp":1332366102000},"page":"754-759","source":"Crossref","is-referenced-by-count":39,"title":["Effect of Therapy on Periodontal Infections"],"prefix":"10.1002","volume":"64","author":[{"given":"Sigmund S.","family":"Socransky","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Anne D.","family":"Haffajee","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[1993,8]]},"container-title":["Journal of Periodontology"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/aap.onlinelibrary.wiley.com\/doi\/pdf\/10.1902\/jop.1993.64.8s.754","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,19]],"date-time":"2025-10-19T10:19:51Z","timestamp":1760869191000},"score":1,"resource":{"primary":{"URL":"https:\/\/aap.onlinelibrary.wiley.com\/doi\/10.1902\/jop.1993.64.8s.754"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[1993,8]]},"references-count":0,"journal-issue":{"issue":"8S","published-print":{"date-parts":[[1993,8]]}},"alternative-id":["10.1902\/jop.1993.64.8s.754"],"URL":"https:\/\/doi.org\/10.1902\/jop.1993.64.8s.754","archive":["Portico"],"relation":{},"ISSN":["0022-3492","1943-3670"],"issn-type":[{"type":"print","value":"0022-3492"},{"type":"electronic","value":"1943-3670"}],"subject":[],"published":{"date-parts":[[1993,8]]}}}