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Table 5 Regression equations obtained from Supplements 2, 3, 4, and 5

From: Estimation of periodontal pocket surface area in small to medium dogs: a proof-of-concept study

A: Maxilla

 

Estimated root length

Estimated root surface area

PPSA

Supplement 2

Supplement 3

Supplement 4

Supplement 5

max I1

 

1.06 × Root length (max P4)-3.63

12.1 × Root length (max I1) + 16.6

Estimated surface area × {1- (Estimated root length—Average PD1-6)2 / Estimated root length 2}

max I2

 

0.50 × Root length (max P4) + 3.00

23.2 × Root length (max I2)-45.7

max I3

 

0.94 × Root length (max P4) + 1.60

31.9 × Root length (max I3)-89.5

max Canine

 

1.49 × Root length (max P4) + 2.36

26.9 × Root length (max Canine) + 6.30

max P1

 

0.34 × Root length (max P4) + 2.69

24.4 × Root length (max P1)-32.6

max P2

 

0.70 × Root length (max P4)-0.96

13.7 × Root length (max P2) + 105.7

max P3

 

0.37 × Root length (max P4) + 2.52

70.5 × Root length (max P3)-196.7

max P4

0.47 × BW + 7.6

ND

119.2 × Root length (max P4)-560.7

max M1

 

0.44 × Root length (max P4) + 2.95

89.8 × Root length (max M1)-219.4

max M2

 

0.47 × Root length (max P4)-1.44

39.4 × Root length (max M2)-33.9

B: Mandible

 

Estimated root length

Estimated root surface area

PPSA

Supplement 2

Supplement 3

Supplement 4

Supplement 5

mandi I1

 

0.64 × Root length (max P4) + 2.55

13 × Root length (mandi I1) + 1.6

Estimated surface area × {1- (Estimated root length—Average PD1-6)2 / Estimated root length 2}

mandi I2

 

0.86 × Root length (max P4) + 0.26

14.8 × Root length (mandi I2) + 2.0

mandi I3

 

0.59 × Root length (max P4) + 4.52

23.3 × Root length (mandi I3)-77.7

mandi Canine

 

1.13 × Root length (max P4) + 5.92

40.6 × Root length (mandi Canine)-107.3

mandi P1

 

0.29 × Root length (max P4) + 3.29

30.5 × Root length (mandi P1)-24.6

mandi P2

 

0.41 × Root length (max P4) + 2.83

43.4 × Root length (mandi P2)-87.9

mandi P3

 

0.45 × Root length (max P4) + 3.15

46.1 × Root length (mandi P3)-117.6

mandi P4

 

0.52 × Root length (max P4) + 3.99

36.5 × Root length (mandi P4)-45.7

mandi M1

 

0.78 × Root length (max P4) + 3.20

71.4 × Root length (mandi M1)-113.3

mandi M2

 

0.25 × Root length (max P4) + 3.65

45.4 × Root length (mandi M2)-118.0

mandi M3

 

0.82 × Root length (max P4)-5.36

17.7 × Root length (mandi M3) + 10.8

  1. BW body weight (kg) of dogs, max maxillary, mandi mandibular, I incisor, P premolar, M molar