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Table 3 Comparison of the surgical condition after alveolar ridge preservation

From: Greater bone regeneration required for implants following periodontal extraction: a retrospective cross-sectional study

  

Surgical condition

χ2

P-value

Implant

Implant with extra GBR

n (%)

n (%)

Socket type

   

5.596

0.018*

 

Destructive

33 (52.4)

30 (47.6)

  
 

Intact

66 (71.0)

27 (29.0)

  

Gender

   

1.206

0.272

 

Female

59 (60.2)

39 (39.8)

  
 

Male

40 (69.0)

18 (31.0)

  

Age

   

1.217

0.270

 

< 54

49 (68.1)

23 (31.9)

  
 

≧ 54

50 (59.5)

34 (40.5)

  

Location

   

7.215

0.007*

 

Upper

29 (50.9)

28 (49.1)

  
 

Lower

70 (70.7)

29 (29.3)

  

Alcohol

   

7.516

0.006

 

No

55 (55.6)

44 (44.4)

  
 

Yes

35 (79.5)

9 (20.5)

  

Cigarette

   

0.123

0.726

 

No

78 (62.4)

47 (37.6)

  
 

Yes

12 (66.7)

6 (33.3)

  

BMI

   

1.378

0.240

 

< 24

43 (58.1)

31 (41.9)

  
 

≧ 24

46 (67.6)

22 (32.4)

  

Systemic diseases

   

0.008

0.930

 

No

54 (62.8)

32 (37.2)

  
 

Yes

36 (62.1)

22 (37.9)

  

BW1

   

0.002

0.964

 

Narrow

49 (63.6)

28 (36.4)

  
 

Wide

50 (63.3)

29 (36.7)

  

BW2

   

0.908

0.341

 

Narrow

46 (59.7)

31 (40.3)

  
 

Wide

53 (67.1)

26 (32.9)

  

BW3

     
 

Narrow

46 (59.0)

32 (41.0)

1.355

0.245

 

Wide

53 (67.9)

25 (32.1)

  
  1. Age: years old
  2. BMI: body mass index, kg/m2
  3. BW1 median: 8.7 mm. Wide BW1 ≧ 8.7 mm; narrow BW1 < 8.7 mm
  4. BW4 median: 10.8 mm. Wide BW1 ≧ 10.8 mm; narrow BW1 < 10.8 mm
  5. BW7 median: 12.5 mm. Wide BW1 ≧ 12.5 mm; narrow BW1 < 12.5 mm
  6. GBR: guided bone regeneration
  7. Implant with extra GBR: IGBR (implant surgery combined with simultaneous GBR) or adGBR (additional staged GBR before implant)
  8. p value were assessed using the chi-square test
  9. * p value < 0.05