01632naa a2200277 a 450000100080000000500110000800800410001910000180006024501550007826000090023352007890024265000210103165000160105265000170106865000220108565000180110765000200112565000250114565000190117065300180118965300170120765300220122470000210124670000150126777300720128220959612018-09-18       1988    bl uuuu     u00u1 u    #d1 aSPENCE, J. A.  aDevelopment of periodontal disease in a single flock of sheepbclinical signs, morphology of subgingival plaque and influence of antimicrobial agents.  c1988  aAbstract: The clinical development of broken mouth over a single reproductive year and the effect of two broad spectrum antibacterial agents upon it was followed in 72 Scottish Blackface ewes aged between two and three years. Using a number of dental health indices especially developed for the purpose, the amount of gingivitis, tooth movement, gum recession and pocketing were quantified and graphed for both the whole population and each group in the drug trial. All clinical features except movement fluctuated significantly with time, the fluctuations often being associated with nutritional or other environmental factors. Despite the extended use of large doses of two antimicrobial agents no significant reduction in the amount of clinical gingivitis or pocketing was evident.  aAnimal pathology  aBody weight  aDrug therapy  aGingival diseases  aMetronidazole  aOxytetracycline  aPeriodontal diseases  aSheep diseases  aDental Plaque  aDrug effects  aPeriodontal Index1 aAITCHISON, G. U.1 aFRASER, J.  tResearch in Veterinary Sciencegv. 45, n. 3, p. 324-331, Nov. 1988.