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. 2020 Oct 12;9(10):3271. doi: 10.3390/jcm9103271

Table 2.

Quantitative analysis of articles included in the systematic review.

AUTHOR (YEAR) TYPE OF STUDY YEARS OF FOLLOW-UP LENGTH * (mm) DIAMETER ** (mm) No. INITIAL IMPLANTS MEAN MARGINAL BONE LOSS (mm) SD S/NS RESTORATIONS No. LOST IMPLANTS C/I RATIO NOS
Adánez (2018) PCC 1 Short Standard 20 0′56 0′51 S 0 2 8
Standard Standard 20 0′67 0′23 S 0 1
Blanes (2007) PCC 10 Short Standard 108 0′5 0′63 S and NS 3 1 8
Standard Standard 84 0′3 0′48 S and NS 1 2
Ghariani (2016) PCC 1 Short Standard 5 NS 0 3 7
Standard Standard 7 NS 0 2
Guarnieri (2019) PCC 3 Short Standard 28 0′23 0′6 S and NS 1 9
Standard Standard 36 0′27 0′3 S and NS 0
Hadzik (2018) PCC 3 Short Standard 15 0′34 0′24 NS 1 2 7
Standard Standard 15 0′22 0′46 NS 0 2
Malchiodi (2014) PCC 3 Short Standard 151 S and NS 3 9
Standard Standard 108 S and NS 2
Malchiodi (2017) PCC 3 Short Standard 23 0′44 0′72 S and NS 0 3 8
Short Standard 11 0′44 0′72 S and NS 1 3
Standard Narrow 10 0′46 0′37 S and NS 1 2
Standard Standard 18 0′46 0′37 S and NS 0 2
Standard Standard 9 0′46 0′37 S and NS 0 2
Standard Standard 2 0′46 0′37 S and NS 0 2
Standard Narrow 12 0′75 0′86 S and NS 2 2
Standard Standard 18 0′75 0′86 S and NS 0 2
Standard Standard 10 0′75 0′86 S and NS 0 2
Mangano (2016) PCC 5 Short Standard 68 S and NS 2 2 8
Naenni (2018) RCT 5 Short Standard 40 NS 4 2 9
Standard Standard 46 NS 0 2
Pohl (2017) RCT 3 Short Standard 61 0′44 0′44 NS 0 2 8
Standard Standard 68 0′45 0′55 NS 0 1
Rossi (2016) PCC 5 Short Standard 30 2′3 0′52 NS 2 9
Standard Standard 30 2′64 0′56 NS 1
Sahrmann (2016) RCT 3 Short 40 0′19 0′62 NS 1 2 9
Standard 38 0′33 0′71 NS 0 2
Schincaglia (2015) RCT 1 Short Standard 67 0′22 0′3 NS 2 2 9
Standard Standard 70 0′37 0′59 NS 1 1
Zadeh (2018) RCT 3 Short Standard 108 0′27 0′4 S 4 2 9
Standard Standard 101 0′44 0′74 S 1 1

SD: standard deviation; C/I ratio: crown-to-implant ratio; S: splinted; NS: non-splinted; NOS: Newcastle–Ottawa Scale; PCC: prospective control case studies; RCT: randomized clinical trial. * Length: short ≤ 8 mm and standard > 8 mm. ** Diameter: standard (≥3.75 mm) and narrow < 3.75 mm.