Table 1 Study characteristics

Chandra et al. 2019 [10]

Non randomized comparative clinical study

34

34

Autogenous bone ring (chin) (BR group) vs sticky bone + collagen membrane (SB group)

IOI at 6 months

6 months

Flanagan et al. 2016 [17]

Case series

8

8

Allogenic bone ring + IOI + allograft + collagen membrane

1 year

Fukuda et al. 2005 [18]

Case series

9

13

Autogenous bone ring (chin) + IOI

3.1 years

Giesenhagen et al. 2018 [19]

Case report

1

1

Allogenic bone ring + IOI + collagen membrane

6 months

Giesenhagen et al. 2019 [20]

Case series

3

7

Allogenic bone ring + IOI + collagen membrane

36 months

Giraddi et al. 2017 [21]

Prospective study

14

15

Autogenous bone ring (chin) + IOI + PRF membrane

9 months

Miller J. 2019 [22]

Case report

1

1

Allogenic bone ring + xenograft + IOI + collagen membrane

6 months

Nord et al. 2019 [23]

Retrospective study

51

81

Allogenic bone ring + autogenous bone chips + IOI + collagen membrane

12 months

Omara et al. 2016 [24]

Prospective study

10

12

Autogenous bone ring (chin) + IOI

6 months

Peñarrocha et al. 2005 [25]

Case report

1

3

Autogenous bone ring (ramus) + IOI

2 years

Rizzo et al. 2017 [26]

Case series

4

4

Crestal sinus floor elevation with autogenous bone ring (chin) and simultaneous IOI

3 years

Sindel et al. 2018 [27]

Retrospective study

10

10

Sinus floor elevation with autogenous bone ring (chin) and simultaneous IOI

24.3 months

Stevenes et al. 2010 [28]

Case report

1

4

Autogenous bone ring (chin) + IOI

6 months

Tekin et al. 2011 [29]

Case report

1

1

Autogenous bone ring (chin) + IOI

1 year

Wychowansky et al. 2020 [11]

Non randomized comparative clinical study

30

60

Autogenous bone ring (chin) + simultaneous IOI (BR group) vs xenograft tunnel (XG group) and delayed IOI after 6m

24 months

Yuce et al. 2019 [12]

Prospective study

8

12

Autogenous bone ring (chin) + IOI

18 months