Retrospective study of alveolar ridge preservation compared with no alveolar ridge preservation in periodontally compromised extraction sockets

International Journal of Implant Dentistry

Table 2 Clinical outcomes of the two groups at implant placement

			No ARP	ARP
Bone quality		Type 1	2	4
		Type 2	108	163
		Type 3	59	80
		Type 4	2	0
Feasibility of implant placement		Yes	163	245
		No	8	2
Bone augmentation at implant surgery	Horizontal bone augmentation	Yes	66	45
		No	105	202
	Vertical bone augmentation	Yes	26	3
		No	145	244
	Sinus floor elevation	Yes	27	16
		No	144	231
	Total	Yes	77	58
		No	94	189
Implant	Type	Bone level, internal	144	172
		Bone level, external	23	75
		Tissue level	4	0
	Length	≤ 8.5 mm	10	15
		8.6–12.9 mm	157	230
		≥ 13 mm	4	2
	Diameter	< 3.75 mm	3	18
		3.75 to 4.5 mm	113	126
		> 4.5 mm	55	103
	System	A	2	23
		B	5	8
		C	73	109
		D	20	75
		E	66	12
		F	5	20
Surgical protocol		1-stage	121	155
		2-stage	50	92
Periods (months) from extraction to implant placement		Mean ± SD	4.98 ± 4.07	6.29 ± 3.50
		< 3 months	50	0
		3 to 6 months	121	124
		> 6 months	0	123
Implant failure before loading			1	4

A: Astra (Dentsply Sirona, North Carolina, USA), B: ITI Dental Implant (Institut Straumann AG, Waldenburg, Switzerland), C: USII, and TSIII (Osstem implant, Seoul, Korea), D: Implantium and Superline (Dentium, Seoul, Korea) E: Luna, and Sola (Shinhung, Seoul, Korea) F: EB (Neobiotech, Seoul, Korea)