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Table 3 Descriptive and inferential statistics of radicular lenght changes occurred after maxillary expansion

From: External root resorption and rapid maxillary expansion in the short-term: a CBCT comparative study between tooth-borne and bone-borne appliances, using 3D imaging digital technology

 

T0-T1 (mm)

T0-T1 (mm)

 

TB Group

BB Group

 

TB Group

BB Group

Teeth

n

Mean

SD

p value*

Mean

SD

p value*

p value**

 

Mean

SD

p value*

Mean

SD

p value*

p value**

Test

P1

20

0,51 (c)

0,18

p < 0.05

0,08 (b,e)

0,03

p < 0.05

p < 0.05

Control

P1

20

0,02

0,21

NS

-0,05

0,30

NS

NS

P2

20

0,39 (e)

0,14

0,11 (a,e)

0,02

p < 0.05

P2

20

-0,06

0,13

0,04

0,11

NS

M1m (c)

20

0,37 (a,e)

0,10

0,10 (e)

0,04

p < 0.05

M1m (c)

20

0,09

0,48

0,03

0,35

NS

M1d (d)

20

0,43

0,14

0,09 (e)

0,02

p < 0.05

M1d (d)

20

0,01

0,52

0,04

0,55

NS

M1p (e)

20

0,56 (b,c)

0,19

0,15 (a,b,c,d)

0,04

p < 0.05

 

-

-

-

-

 

-

-

-

 
  1. P1 First premolar, P2 Second premolar, M1m First molar mesial root, M1d First molar distal root, M1p First molar palatal root, TB Tooth borne, BB Bone borne, T0 pre-treatment, T1 post-retention, n Number of teeth, SD Standard deviation
  2. p value* based on one-way analysis of variance (ANOVA) for intra-group comparison (different teeth) and set at p < 0.05; post-hoc assessment performed according to the Bonferroni's multiple comparisons test
  3. p value** base on Independent Student's t test for inter-groups comparisons and set at p < 0.05
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BMC Oral Health

ISSN: 1472-6831

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