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Table 1 Characteristics of the included studies

From: The use of three implants to support a fixed prosthesis in the management of the edentulous mandible: a systematic review

Year

First Author

Study design

Patients

Implants

Mean age years

Mean follow up years

Follow up range months

Implant survival

Prosthetic survival

Marginal bone loss

Loading

System

2001

De Bruyn [10]

Prospective

20

(8M, 12F)

60

Straight

64 (41-80)

3

36

90.5%

85%

2.1 mm

Immediate

Brånemark®

2003

Engstrand [11]

Prospective

95

(53M, 42F)

285

Straight

68.5 (45-89)

2.5

12-60

93.3%

99%

0.73 mm

Immediate

Brånemark Novum®

2003

Henry [12]

Prospective

51

(28M, 23F)

153

Straight

62 (43-79)

1

12

91%

94%

0.4 mm

Immediate

Brånemark Novum®

2004

Van Steenberghe [13]

Prospective

50

(25M, 25F)

150

Straight

57 (45-80)

1

12

92.7%

95%

1.1 mm

Immediate

Brånemark Novum®

2009

Gualini [14]

Retrospective

15

(11M, 4F)

45

Straight

64 (55-78)

5

60

91%

87%

NR

Immediate

Brånemark Novum®

2011

De Kok [15]

Prospective RCT

10

(5M, 5F)

30

Distal tilted

62 (47-76)

1

12

100%

100%

NR

Delayed

Astra Tech Osseospeed®

2011

Hatano [16]

Retrospective

132

(65M, 67F)

396

Distal tilted

63 (35-85)

5

12-132

96.7%

92.4%

NR

Immediate

Brånemark®

2012

Oliva [17]

Retrospective

12

(8M, 4F)

36

Straight

49 (39-79)

5

60

100%

100%

NR

Delayed

Straumann®/Osstem®

2012

Rivaldo [18]

Prospective

33

(12M, 21F)

99

Straight

NR (38-83)

1.5

18

97.8%

NR

0.8 mm

Immediate

NR

2018

Beresford [19]

Prospective

12

(5M, 7F)

36

Straight

69 (60-81)

1

12

100%

100%

NR

Immediate

Nobel Biocare®

2018

Cannizzaro [20]

Prospective RCT

12

(NR)

36

Straight

57.5 (39-78)

1

12

91.7%

97.2%

0.22 mm

Immediate

Sweden & Martina®

2018

Primo [21]

Prospective

20

(4M, 16F)

60

Distal tilted

64 (46-81)

1.5

18

98.3%

100%

1.75 mm

Immediate

Brånemark

Novum®

   

22

(4M, 18F)

66

Distal tilted

71 (57-83)

1.5

18

98.5%

100%

1.75 mm

Delayed

Brånemark Novum®

2019

Menini [22]

Case Series

4

(3M, 1F)

12

Straight

54 (41-65)

16

192

100%

100%

2.2 mm

Immediate

Brånemark Novum®

2019

Mezzari [23]

Retrospective

58

(23M, 35F)

174

NR

63 (46-61)

5

60

97.1%

93.1%

2.29 mm

Immediate

Brånemark Novum®

2020

Anya [24]

Retrospective

29

(16M, 13F)

87

Distal tilted

65 (NR)

6

72

100%

NR

1.0 mm

Immediate

Hi-Tec Logic Plus®

2020

Higuchi [25]

Prospective

110

(50M, 60F)

330

Straight

62 (NR)

1

12

97.5%

97.3%

0.62 mm

Immediate/Early

Nobel Biocare Trefoil®

  1. NR not reported