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Table 1 Median and interquartile range \( \overset{\sim }{m} \)(iqr) of the alveolar bone width at baseline 1 (pre-extraction) and baseline 2 (before delayed dental implant placement) and after 10 years for sites with porcine bone graft (A) and collagen sponge (B)

From: Bone remodeling around implants placed after socket preservation: a 10-year retrospective radiological study

  

Alveolar width (AW)

Change at the alveolar ridge (ΔAW)

Intragroup analysis (p value)

Group

N°

bsl 1

bsl 2

10 years

bsl 1→bsl 2

bsl 2→10 years

bsl 1→10 years

bsl 1 vs bsl 2

bsl 2 vs 10 years

bsl 1 vs 10 years

 

Overall sites

A

30

10.9(2.3)

8.4(2.1)

9.4(1.6)

− 2.7(0.9)

+ 1.3(1.1)

− 1.3(1.6)

< 0.0001

< 0.0001

< 0.0001

B

24

10.6(2.0)

7.1(1.1)

9.0(1.5)

− 3.9(1.4)

+ 1.8(1.1)

− 2.2(1.6)

< 0.0001

< 0.0001

< 0.0001

Intergroup analysis

(p value*)

 

0.8616

0.0032

0.1296

< 0.0001

0.0688

0.0863

   

Effect of site

(p value^)

 

< 0.0001

< 0.0001

0.0099

0.0176

0.6093

0.0086

   

Effect of gender

(p value^)

 

0.0442

0.0102

0.0448

0.7096

0.8234

0.8236

   
 

Premolar

A

16

9.8(0.7)

7.1(1.3)

9.1(1.4)

− 2.8(1.0)

+ 1.5(1.5)

− 1.3(1.7)

0.0004

0.0004

0.0004

B

13

10.2(0.8)

6.7(0.7)

8.3(1.4)

− 3.3(1.1)

+ 1.7(1.4)

− 1.5(1.5)

0.0002

0.0002

0.0002

Intergroup analysis

(p value*)

 

0.5524

0.1349

0.2816

0.0562

0.8434

0.2190

   
 

Molar

A

14

12.1(0.3)

9.1(0.9)

9.9(1.8)

− 2.7(0.5)

+ 1.0(1.7)

− 1.8(2.0)

0.0001

0.0001

0.0234

B

11

12.1(0.6)

7.5(1.6)

9.4(1.2)

− 4.6(0.6)

+ 1.9(0.7)

− 2.7(1.1)

0.0009

0.0009

0.0009

Intergroup analysis

(p value*)

 

1

0.0005

0.2743

< 0.0001

0.0061

0.2972

   
 

Premolar vs molar

A

(p value*)

 

< 0.0001

< 0.0001

0.0209

0.06772

0.0612

0.0843

   

B

(p value*)

 

< 0.0001

0.0594

0.0395

0.0003

0.3102

0.0137

   
  1. Results with significance in bold
  2. ^Non-parametric analysis of variance test (ANOVA Friedman test)
  3. *Mann–Whitney tests
  4. °Wilcoxon signed-rank test