This review comparing digital scans and conventional impressions for complete arch implant-supported fixed prostheses included 6 RCTs. The findings suggest that digital scans significantly reduce the the time required compared with conventional impressions for complete arch implant-supported prostheses. However, there are only a small number of small studies available with only one of the six included being at low risk of bias.
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This review comparing the use of narrow-diameter and regular diameter dental implants for supporting mandibular overdentures included 8 studies reported in 12 publications. While the findings suggest no differences between narrow and regular implants supporting mandibular overdentures the findings should be viewed cautiously as the quality of evidence is limited in quality and quantity and also short-term in nature.
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This review of marginal bone loss and implant survival rate of tilted implants compared with those of axial implants for implant-supported fixed partial dentures (ISFPDs) included 9 studies. The findings suggest no different in survival rates between the two implant types but the possibility of more marginal bone loss with tilted implants.The quality of evidence is low.
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This review comparing implant and prosthetic survival with narrrow and regular dental implant diameters included 7 studies.The findings suggest no differences between the two types of implant but 5 of the 7 studies are retrospective and only 4 have a follow-up period of 5 years of more.
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This review comparing autogenous dentine graft (ADG) to other bone graft materials for implant placement included 9 studies five of whihc were RCTs. The findings suggest that ADG has similar outcomes to other bone graft material howevr the limited number and quality of the availabel studies means tha findings should be interpreted cautiously.
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This review of the surgical treatment of peri-implantitis alone or in combination with adjunctive graft material included 5 small RCTs. The findings suggest improvements in marginal bone level (MBL) with graft material but the findings should be interpreted very cautiously because of the limited amount and quality of the evidence.
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This review of the outcomes of early and delayed loading of dental implants included 18 RCTs. The findings suggest that early and delayed loading protocols had similar clinical outcomes. However none of the included studies was at a low risk and 13 of the 18 studies were considered to be at high risk of bias. While the findings are similar to other reviews teh availabel evidence is of low to very low certainty.
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This review of clinical outcomes for immediate and non-immediate (early or conventional) loading in single-implant restorations included 10 RCTs. All the included studies had follow up periods of 2 years or more although the number of implant failures was very low overall (11 out of 522) in both goups.
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This review comparing the survival rate, marginal bone loss and clinical complications between extra-short implants (≤6 mm) and 6-mm-longer implants included 17 RCTs. While teh findings suggest no differences at 3 years the included studies are generally small and none of them were at low risk of bias.
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This review of the possible association between diabetes mellitus and dental implant complications included 10 cohort studies (8 prospective 2 retrospective). The findings suggest that patients with diabetes are more likely to have clinical complications with dental implants.
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