Chronic periodontitis is strongly associated with composition of the oral biofilm
occupying the gingival crevicular aspect of the tooth and its associated root. Some gram-negative,
"red complex" bacteria instigate periodontal bone loss in...
Water flowing down and between a rocky crevice with trees above. Title: The Giants Gorge. Text on bottom: Watkins Glen. Text on left: The Scenery of the North Central Railway. Text on right: Purviance. Philadelphia. Photographer and Publisher.