Table 2 Patient demographics

author: Sven Marcus Beschnidt,Claudio Cacaci,Kerem Dedeoglu,Detlef Hildebrand,Helfried Hulla,Gerhard Iglhaut,Gerald Krennmair,Markus Sch | publisher: drg. Andreas Tjandra, Sp. Perio, FISID

Table 2 Patient demographics

Overall	Subgroup*
Overall	Platform switching	Platform matching
Patients, n (%)	196 (100)	144	41
Sex, n (%)
Male	87 (44.4)	62 (43.1)	19 (46.3)
Female	109 (55.6)	82 (56.9)	22 (53.7)
Age, years
Mean (SD)	51.5 (14.2)	53.1 (14.4)	47.4 (12.9)
Range	17.9–82.1	17.9–82.1	19.3–78.5
Pre-implant bone surgeries, n
Autogenous bone grafting	31	n/a	n/a
Socket preservation	1	n/a	n/a
Others	16	n/a	n/a
Pre-implant soft tissue surgeries, n
Palatal soft tissue graft	15	n/a	n/a
Other	1	n/a	n/a
Bone quality, %
D1: mainly homogenous bone	12.8	8.9	22.4
D2: compact bone thick	42.2	42.4	41.8
D3: compact thin/cancellous good density	42.2	45.3	35.8
D4: compact thin/cancellous low density	2.8	3.4	0.0
Reasons for tooth loss, n (%)
Caries	53 (19.3)	36 (18.4)	13 (19.4)
Endodontic	96 (35.0)	67 (34.2)	24 (35.8)
Fracture	35 (12.8)	32 (16.3)	3 (4.5)
Periodontal	46 (16.8)	33 (16.8)	13 (19.4)
Endodontic and periodontal	3 (1.1)	3 (1.5)	0 (0.0)
Caries and periodontal	4 (1.5)	4 (2.0)	0 (0.0)
Endodontic and fracture	2 (0.7)	1 (0.5)	1 (1.5)
Others	35 (12.8)	20 (10.2)	13 (19.4)
Missing	11 (3.9)
Smoking status, n (%)
Non-smoker	166 (86.5)	121 (85.2)	37 (90.2)
Mild smoker (≤ 10/day)	18 (9.4)	13 (9.2)	4 (9.8)
Heavy smoker (> 10/day)	8 (4.2)	8 (5.6)	0 (0.0)
General health status, n (%)
ASA P1	161 (85.6)	118 (85.5)	34 (82.9)
ASA P2	26 (13.8)	20 (14.5)	6 (14.6)
ASA P3	1 (0.5)	0 (0.0)	1 (2.4)

*Eleven patients with 14 implants were not loaded/restored with abutments due to early implant failures or because the patients were lost to follow-up (Fig. 1)

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