TABLE 1.
Occurrence of P. intermedia and P. nigrescens in family members with adult periodontitis and simple childhood gingivitisa
| Family no. | Member | Age (yr) | Gender | Periodontal status | Sampled tooth | Type and subtype (no. of strains)b
|
Total no. of strains tested | |
|---|---|---|---|---|---|---|---|---|
| P. intermedia | P. nigrescens | |||||||
| 1 | Mother | 47 | F | AP | U-F | A1 (16), A2 (2), E1 (1) | 19 | |
| Father | 49 | M | AP | U-F | A1 (17) | E1 (2) | 19 | |
| Child | 4 | M | G | U-E | A1 (2) | N1 (3) | 5 | |
| 2 | Mother | 42 | F | AP | L-FP | A3 (17), A4(1) | E2 (1), H1 (1) | 20 |
| Father | 45 | M | AP | U-C | A4 (1) | E3 (7), E4 (6) | 14 | |
| Child | 12 | F | G | L-FP | A4 (17) | 17 | ||
| 3 | Mother | 42 | F | AP | U-F | A5 (10) | E5 (1) | 11 |
| Father | 43 | M | AP | U-F | O1 (20) | 20 | ||
| Child | 13 | M | G | U-C | A5 (1) | E6 (19) | 20 | |
| 4 | Mother | 36 | F | AP | U-F | E7 (19) | 19 | |
| Father | 41 | M | AP | U-FP | A6 (1), L1 (1) | A8 (2), E7 (15) | 19 | |
| Child | 12 | M | G | U-I | E7 (19), L1 (1) | 20 | ||
| 5 | Mother | 43 | F | AP | U-FP | E8 (16), E9 (1) | 17 | |
| Father | 46 | M | AP | U-F | E8 (18), E9 (2) | 20 | ||
| Child | 15 | F | G | U-F | E8 (5), E9 (1) | 6 | ||
| 6 | Mother | 37 | F | AP | L-S | A7 (8) | 8 | |
| Father | 40 | M | AP | U-FP | E10 (10), P1 (8), Q1 (1), R1 (1) | 20 | ||
| Child | 10 | F | G | U-S | E10 (19) | 19 | ||
| Total no. of strains tested | 115 | 178 | 293 | |||||
a
Abbreviations: M, male; F, female; AP, adult periodontitis; G, simple gingivitis; U, maxilla; L, mandibulari; F, first permanent molar; E, second deciduous molar; FP, first premolar; C, central incisor; C, cuspidate tooth; I, lateral incisor; S, second premolar.
b
Types designated A to R were determined by PCR ribotyping. Subtypes determined by AP-PCR are designated with numeral following the type denoted with a letter.