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Table 2 Relationship of resorption rates of materials in the root canals and roots

From: Clinical and radiographic evaluation of pulpectomy in primary teeth: a 18-months clinical randomized controlled trial

 

ZOE

Vitapex

MPRCF

N

%

N

%

N

%

6 months

 A

48

94.1

23

41.1

32

68.2

 B

0

0

27

48.2

0

0

 C

0

0

2

3.6

0

0

 D

2

3.9 a

4

7.1 b

21

31.8 ab

 E

1

2.0

0

0

0

0

12 months

 A

32

62.7

10

17.9

26

49.1

 B

0

0

14

25

0

0

 C

0

0

28

50

3

5.7

 D

3

5.9a

4

7.1b

24

45.2ab

 E

16

31.4

0

0

0

0

18 months

 A

25

49.0

7

12.5

20

37.7

 B

0

0

16

28.6

2

3.6

 C

0

0

31

55.4

4

7.5

 D

6

11.8a

2

3.5b

27

50.9ab

 E

20

39.2

0

0

0

0

Total

51

100

56

100

53

100

  1. A: both no changes, B: root no change but filling resorbed, C: root began resorption, filling resorbed at faster rate, D: root began resorption, filling resorbed at same rate, E: root began resorption, filling resorbed at slower rate
  2. amean the proportions of resorption at same rate were significantlly different between ZOE group and MPRCF group
  3. bmean the proportions of resorption at same rate were significantlly different between Vitapex group and MPRCF group