title: The natural history of periodontal bone loss in germfree and gnotobiotic rats infected with periodontopathic microorganisms.
mesh_terms: D000197:Actinomycosis, Cervicofacial / Q000150:complications*; D000818:Animals; D001862:Bone Resorption / Q000209:etiology*; D005260:Female; D005856:Germ-Free Life; D008297:Male; D008334:Mandible / Q000382:microbiology; D008437:Maxilla / Q000382:microbiology; D010518:Periodontitis / Q000150:complications*; D051381:Rats; D013290:Streptococcal Infections / Q000150:complications*; D013295:Streptococcus mutans; D014080:Tooth Exfoliation / Q000209:etiology