Assad 2007.
| Methods | Trial design: parallel group RCT Location: Prosthodontic Department, Al Zahraa University Hospital, Egypt Number of centres: one Recruitment period: not stated Funding source: not stated |
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| Participants | Inclusion criteria: patients with edentulous mandibles allowing the placement of 4 12 mm long and 3.7 mm wide implants Exclusion criteria: any systemic or local disease that might contraindicate implant placement Age at baseline: 48 to 63 years Gender: all male Number randomised: 10 patients, 4 implants per patient Number evaluated: 10 patients, 4 implants per patient |
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| Interventions |
Comparison: Immediate versus conventional loading Gp A (n = 5) Immediate loading: 4 implants immediately loaded (within 4 days of insertion) Gp B (n = 5) Conventional loading: 4 implants supporting a bar and an overdenture conventionally loaded (4 months after placement) Screw‐Vent (Paragon, Core‐Vent Corporation, Las Vegas, NV, USA) submerged titanium screws were used on all patients. "All patients received maxillary conventional complete dentures and mandibular bar retained dentures" Duration of follow‐up: 2 years |
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| Outcomes | Prosthesis/implant failures, implant percussion, marginal bone level changes on standardised intraoral radiographs, gingival index, plaque index, probing pocket depth reported at baseline, 6,12,18 & 24 months | |
| Notes | Sample size calculation: not reported | |
| Risk of bias | ||
| Bias | Authors' judgement | Support for judgement |
| Random sequence generation (selection bias) | Unclear risk | Reported in the article: "Patients participating in this study were randomly divided into 2 equal groups, each containing 5 edentulous patients" No reply to letter |
| Allocation concealment (selection bias) | Unclear risk | Nothing reported in the article No reply to letter |
| Blinding of outcome assessment (detection bias) All outcomes | Unclear risk | Nothing reported in the article No reply to letter |
| Incomplete outcome data (attrition bias) All outcomes | Low risk | All data presented |
| Selective reporting (reporting bias) | Low risk | All outcomes appear to be presented |
| Other bias | Low risk | None detected |