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. 2021 Feb 8;7:8. doi: 10.1186/s40729-021-00289-z

Table 1.

Demographics and survival rates of implants and implant crowns

Test group (PRF) Control group
Number of implants 14 13
Mean age, years (range) 47.9 (23–66) 52.3 (24–72)
Gender
 Female 6 6
 Male 8 7
Smokers
Total 2 1
 < 10 cigarettes per day 1
 > 20 cigarettes per day 1 1
Number of implants 14 13
Implant length (mm) and implant diameter (mm)

L: 11.5, Ø: 3.75 = 2

L: 11.5, Ø: 4.3 = 2

L: 13, Ø: 3.75 = 5

L: 13, Ø: 4.3 = 5

L: 11.5, Ø: 3.75 = 4

L: 11.5, Ø: 4.3 = 0

L: 13, Ø: 3.75 = 6

L: 13, Ø: 4.3 = 3

Implant site, maxilla
 Incisors 3 6
 Canine 1
 Premolars 10 7
 Implant survival 100% (14/14) 85% (11/13)
 Implant crown survival 100% (14/14) 92% (11/12)

Abbreviations: L length, Ø diameter