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Table 1 Patients’ data

From: Removal of dental implants displaced into the maxillary sinus: a retrospective single-center study

Case

Gender

Age (years)

Diabetes

Smoking

Year of surgery

Number of fixture (site)

Other components

Fixture type

Fixture shape

Implant diameter x lenght (mm)

Time from placement to removal (months)

Residual bone height (mm)

Sinus lift

Sinusitis

OAF

Ostium obstruction

Other Signs/Symptoms

Surgical approach

1

F

45

No

Yes

2008

1 (16)

Healing abutment

TL

Cylindrical

3.3 × 10

12

3

No

Yes

No

Yes

Pain, nasal discharge

Transnasal

2

F

56

No

No

2008

2 (15. 17)

Cover screw

BL

Cylindrical

4.1 × 10; 4.8 × 10

4

6

Lateral

No

No

No

None

Transoral

3

F

61

Yes

No

2008

1 (16)

Cover screw

BL

Cylindrical

3.5 × 13

6

11

No

No

No

No

None

Transoral

4

M

50

No

Yes

2008

1 (17)

Abutment

BL

Conical

4.0 × 9

15

4

Crestal

Yes

Yes

Yes

Pain, nasal obstruction

Combined

5

M

38

No

No

2008

1 (26)

Cover screw

BL

Cylindrical

4.0 × 10

4

6

No

Yes

No

Yes

Nasal obstruction

Transnasal

6

F

42

No

No

2009

1 (27)

Abutment

BL

Cylindrical

4.0 × 10

4

5

No

No

No

No

None

Transoral

7

M

37

No

Yes

2009

1 (26)

Cover screw

BL

Cylindrical

5.0 × 9

6

4

Yes

Yes

No

No

Pain

Transoral

8

F

54

No

No

2009

1 (15)

Cover screw

BL

Conical

4.3 × 10

7

2

Yes

No

No

No

None

Transoral

9

F

60

No

No

2009

1 (26)

Cover screw

BL

Cylindrical

3.5 × 11

6

5

Crestal

Yes

Yes

Yes

Pain, nasal discharge

Combined

10

M

41

No

Yes

2009

2 (25, 27)

No

BL

Cylindrical

4.1 × 10; 4.1 × 8

7

6

Lateral

Yes

No

Yes

Nasal obstruction

Transnasal

11

M

52

No

Yes

2010

1 (17)

No

BL

Conical

3.75 × 11

4

3

Lateral

No

No

Yes

None

Transnasal

12

M

48

No

No

2010

1 (26)

Cover screw

BL

Cylindrical

4.0 × 12

4

4

No

No

No

No

None

Transoral

13

F

61

No

No

2010

1 (26)

No

BL

Cylindrical

4.0 × 9

1

4

No

No

No

No

None

Transoral

14

F

70

Yes

No

2010

1 (16)

Cover screw

BL

Cylindrical

4.3 × 11.5

4

4

No

No

No

No

None

Transoral

15

F

55

No

No

2011

1 (16)

Abutment

BL

Cylindrical

4.0 × 9

8

5

Crestal

Yes

Yes

Yes

Pain, nasal obstruction

Combined

16

F

50

No

No

2011

1 (26)

No

BL

Cylindrical

4.0 × 10

6

8

No

No

No

No

None

Transoral

17

F

55

No

No

2011

1 (26)

Cover screw

BL

Conical

4.0 × 11

26

6

Crestal

Yes

No

Yes

Pain, nasal obstruction, nasal discharge

Transnasal

18

M

46

No

No

2012

1 (16)

Healing abutment

TL

Cylindrical

4.8 × 8

20

2

No

Yes

No

Yes

Pain, nasal discharge, uveitis

Transnasal

19

M

49

No

Yes

2012

1 (26)

Cover screw

BL

Cylindrical

4.0 × 10

10

6

No

Yes

Yes

Yes

Pain, nasal obstruction, nasal discharge

Combined

20

F

65

No

No

2012

1 (16)

Cover screw

BL

Conical

4.0 × 10

8

3

No

No

No

Yes

None

Transnasal

21

M

39

No

Yes

2013

1 (16)

No

BL

Cylindrical

4.3 × 8.5

4

5

No

No

No

No

None

Transoral

22

M

45

No

No

2013

1 (16)

No

BL

Cylindrical

4.3 × 11.5

4

4

No

Yes

No

No

Pain, nasal discharge

Transoral

23

M

62

Yes

Yes

2013

1 (26)

No

BL

Cylindrical

4.0 × 8

7

4

No

No

No

No

None

Transoral

24

F

72

No

No

2014

1 (26)

No

BL

Conical

4.0 × 8

6

2

Crestal

No

No

No

None

Transoral

25

M

36

No

Yes

2014

1 (26)

Cover screw

BL

Conical

4.0 × 8

3

3

No

No

No

No

None

Transoral

26

M

83

Yes

No

2015

1 (26)

Abutment

BL

Conical

3.75 × 11.5

34

1

No

Yes

No

No

Pain

Transoral

27

F

48

No

No

2015

1 (26)

No

BL

Conical

4.0 × 8

3

3

Crestal

No

Yes

No

None

Transoral

28

F

53

No

No

2016

1 (16)

No

BL

Conical

4.0 × 11

5

3

No

No

No

No

None

Transoral

29

M

51

No

Yes

2016

1 (26)

Abutment

BL

Conical

3.5 × 10

6

2

No

Yes

No

Yes

Pain, nasal obstruction, nasal discharge

Transnasal

30

M

39

No

No

2017

1 (16)

Abutment

BL

Cylindrical

4.0 × 10

6

2

Crestal

Yes

No

Yes

Pain, nasal obstruction

Transnasal

31

M

41

No

No

2017

1 (26)

Abutment

BL

Conical

4.0 × 13

8

4

No

Yes

Yes

No

Pain

Transoral

32

F

40

No

No

2018

1 (16)

Cover screw

BL

Cylindrical

4.0 × 8

4

3

No

Yes

No

Yes

Pain, nasal obstruction, nasal discharge

Transnasal

33

M

66

No

Yes

2018

1 (26)

No

BL

Cylindrical

3.5 × 10

12

3

No

No

No

No

None

Transoral

34

M

49

No

No

2019

1 (16)

Cover screw

BL

Cylindrical

4.3 × 11.5

0.5

5

Lateral

No

No

No

None

Transoral

35

M

58

No

No

2019

1 (26)

Abutment

BL

Cylindrical

4.0 × 7

6

7

No

No

No

Yes

None

Transnasal

34

F

60

No

No

2020

1 (16)

Cover screw

BL

Conical

3.75 × 8

6

3

No

Yes

Yes

No

None

Transoral

35

M

42

No

Yes

2020

1 (26)

No

BL

Conical

4.0 × 10

14

3

No

No

No

No

None

Transoral

38

M

55

No

Yes

2021

1 (26)

Abutment

BL

Conical

4.0 × 9

12

1

No

No

No

No

None

Transoral

39

M

76

Yes

No

2021

1 (26)

Abutment

BL

Cylindrical

4.3 × 11.5

8

3

No

No

No

No

None

Transoral

40

M

42

No

Yes

2021

1 (16)

Healing abutment

TL

Cylindrical

4.1 × 4

0.5

4

No

No

No

No

None

Transoral