References
- Cutress , T.W. 1976 . Histopathology of periodontal disease in sheep . J. Periodontal. , 47 : 643 – 50 .
- Frisken , K.W. 1986 . Microbial aspects of periodontal disease . N.Z. dent. J. , 82 : 97 – 9 .
- K.W. , Frisken , A.J. , Laws , J.R. , Tagg and M.B. , Orr . 1986 . The characterisation of trypsin-positive black-pigmented Bacteroides isolated from sheep periodontal disease . Lett. in appl. Microbiol. , 3 : 57 – 60 .
- Goodson , J.M. , Tanner , A.C.R. , Haffajee , A.D. , Sornberger , G.C. and Socransky , S.S. 1982 . Patterns of progression and regression of advanced destructive periodontal disease . J. clin. Periodont. , 9 : 472 – 81 .
- Haffajee , A.D. , Socransky , S.S. and Lindhe , J. 1983 . Comparison of statistical methods of analysis of data from clinical periodontitis trials . J. clin. Periodont. , 10 : 247 – 56 .
- Haffajee , A.D. , Socransky , S.S. and Goodson , J.M. 1983 . Clinical parameters as predictors of destructive periodontal disease activity . J. clin. Periodont. , 10 : 257 – 65 .
- Morris , P.L. , Whitley , B.D. , Orr , M.B. and Laws , A.J. 1985 . A clinical study of periodontal disease in sheep . N.Z. vet. J. , 33 : 87 – 90 .
- Spence , J.A. , Aitchison , G.U. , Sykes , A.R. and Atkinson , P.J. 1980 . Broken mouth (premature incisor loss) in sheep: The pathogenesis of periodontal disease . J. comp. Path. , 90 : 275 – 92 .