Short implants compared to regular dental implants after bone augmentation in the atrophic posterior mandible: umbrella review and meta-analysis of success outcomes

Sáenz-Ravello, Gustavo; Ossandón-Zúñiga, Benjamín; Muñoz-Meza, Vicente; Mora-Ferraro, Dante; Baeza, Mauricio; Fan, Shengchi; Sagheb, Keyvan; Schiegnitz, Eik; Díaz, Leonardo

doi:10.1186/s40729-023-00476-0

International Journal of Implant Dentistry

Table 2 Characteristics of the primary studies included

From: Short implants compared to regular dental implants after bone augmentation in the atrophic posterior mandible: umbrella review and meta-analysis of success outcomes

References	Study characteristics		Group	Patient characteristics				Surgical protocol				Prosthesis parameters
	Study design/country/setting	Follow-up		No. of participants/no. of implants	Age/gender	Mandible area/type edentulism	Bone characteristics (height/width)	Implant system	Implant length/implant diameter	Augmentation method		Loading time	Retention method	Implant–abutment connection
	Study design/country/setting	Follow-up		No. of participants/no. of implants	Age/gender	Mandible area/type edentulism	Bone characteristics (height/width)	Implant system	Implant length/implant diameter	Type of graft	Time to implant placement	Loading time	Retention method	Implant–abutment connection
Pistilli et al. [48]; Felice et al. [49, 50]	RCT-SM/Italy/private dental clinic	5Y	Short	15/26	56 (37–69)/4M, 11F	Molar and premolar/partial/posterior	6–8 mm/> 5 mm	Southern Implants®, roughened grit-blasted surface (Sinergy™)	6 mm/4 mm			4M temporary/8M final	Screwed or cemented	Internal, hexagonal
Pistilli et al. [48]; Felice et al. [49, 50]	RCT-SM/Italy/private dental clinic	5Y	Control	15/30	56 (37–69)/4M, 11F	Molar and premolar/partial/posterior	6–8 mm/> 5 mm	Southern Implants®, roughened grit-blasted surface (Sinergy ™)	11.5, 13, 15 mm/4 mm	Interpositional block of Collagenated cancellous equine bone (OsteoBiol® Sp-Block, Tecnoss®)	4M	4M temporary/8M final	Screwed or cemented	Internal, hexagonal
Pistilli et al. [51], Gastaldi et al. [52], Esposito et al. [53]	RCT-SM/Italy/private dental clinic	5Y	Short	20/32	58.6 (39–80)/3M, 17F	Molar and premolar/partial/posterior	5–7 mm/> 6 mm	ExFeel, MegaGen Implant®, nano-structured calcium–incorporated titanium surface (Xpeed®) sanded with hydroxyapatite particles	5 mm/5 mm			4M temporary/8m final	Screwed or cemented	External, hexagonal
	RCT-SM/Italy/private dental clinic	5Y	Control	20/31	52.8 (42–70)/4M, 11F	Molar and premolar/partial/posterior	5–7 mm/> 6 mm	ExFeel, MegaGen Implant®, nano-structured calcium-incorporated titanium surface (Xpeed®) sanded with hydroxyapatite particles	10, 11.5, 13, 15 mm/5 mm	Interpositional block of collagenated cancellous bovine bone (OsteoBiol® Sp-Block, Tecnoss®)	4M	4M temporary/8m final	Screwed or cemented	External, hexagonal
Esposito et al. [54, 55]; Felice et al. [56]	RCT-SM/Italy/private dental clinic	5Y	Short	15/30	58.6 (39–80)/–	Molar and premolar/partial/posterior	5–7 mm/> 8 mm	ExFeel, MegaGen Implant®, nano-structured calcium-incorporated titanium surface (Xpeed®) sanded with hydroxyapatite particles	5 mm/6 mm			4M temporary/8m final	Screwed or cemented	Internal, hexagonal
Esposito et al. [54, 55]; Felice et al. [56]	RCT-SM/Italy/private dental clinic	5Y	Control	15/26	52.8 (42–70)/–	Molar and premolar/partial/posterior	5–7 mm/> 8 mm	ExFeel, MegaGen Implant®, nano-structured calcium-incorporated titanium surface (Xpeed®) sanded with hydroxyapatite particles	10, 11.5, 13 mm/4 mm	Interpositional block of inorganic bovine bone (Bio-Oss®)	4M	4M temporary/8m final	Screwed or cemented	Internal, hexagonal
Felice et al. [57], Esposito et al. [58]; Felice et al. [59, 60]	RCT-SM/Italy/private dental clinic	8Y	Short	25/60	56 (40–83)/7M, 23F	–/Partial/posterior	7–8 mm/> 5.5 mm	Nanotite parallel-walled Zimmer-Biomet dental implants®, –	6.6 mm/4 mm			4M temporary/8m final	Screwed or cemented	External, hexagonal
	RCT-SM/Italy/private dental clinic	8Y	Control	23/61	55 (43–67)/15M, 15F	–/Partial/posterior	7–8 mm/> 5.5 mm	Nanotite parallel-walled Zimmer-Biomet dental implants®, –	9.6, 11.1, 12.6, 14.6 mm/4 mm	Interpositional block of inorganic bovine bone, particulated (Bio-Oss®)	4M	4M temporary/8m final	Screwed or cemented	External, hexagonal
Bernardi et al. [47]	RCT-SM/Italy/private dental clinic	1Y	Short	36/86	43–77/–	–/Partial/posterior	< 9 mm/–	IM Macon, Maco DentalCare®	6 mm/4.10 mm			–	Cemented	Internal, hexagonal
Bernardi et al. [47]	RCT-SM/Italy/private dental clinic	1Y	Control	36/84	43–77/–	–/Partial/posterior	< 9 mm/–	ConicalActive, Maco DentalCare®	10 mm/3.90 mm	Sandwich technique, osteogenic distraction + collagenated cancellous equine bone block (Tecnoss®)	6M	–	Cemented	Internal, hexagonal
Pieri et al. [61]	Cohort study/Italy/private dental clinic	5Y	Short	23/46	57.69 ± 7.93/–	–/Partial/posterior	9–7 mm/–	OsseoSpeed™, Denstply Implants®	6 mm/4 mm			4–5M final	Screwed or cemented	Internal, hexagonal
Pieri et al. [61]	Cohort study/Italy/private dental clinic	5Y	Control	22/51	56.4 ± 8.25/–	–/Partial/posterior	9–7 mm/–	AstraTechOsseoSpeed™, Denstply Implants®	9, 11 mm or more/3.5, 4 mm	Interpositional block of autograft + inorganic bovine bone particles Bio-Oss®)	4–5M	4–5M final	Screwed or cemented	Internal, hexagonal

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