‘All-on-4®’ treatment concept: current evidence limited

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This systematic review of the ‘All-on-4®’ concept for fixed full arch restoration includes 24 studies of limited quality is considered here by Mark-Steven Howe.

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Short dental implants show similar outcomes to standard implants in short term

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13 studies (10 RCTs, 3 prospective) were included in this review comparing the outcomes of short and standard dental implants. No difference were seen in studies lasting up to 5 years.

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Dental implants – immediate placement in infected sockets may increase failure rates

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This review of dental implants placed in infected sockets included 7 studies all considered to be a at high risk of bias. The findings suggest that failure rates are higher in infected sockets but the findings should be interpreted with caution.

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Wide dental implants have good 5-year survival rates suggests review

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8 prospective and 11 retrospective studies were included in this review of wide (≥5 mm) dental implants. Data suggests 5-year survival rates over 92% ( 95%CI; 79.6%- 97.5%).

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Antibiotic prophylaxis and dental implant failure

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This review of antibiotic prophylaxis during dental implant placement considered both systematic reviews and RCTs. Evidence from the 10 included RCTs suggests a small reduction (2%) in the risk of implant loss. These results are similar to a recent Cochrane review.

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Dental Implants placed in fresh sockets have poorer survival

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This review included 44 studies involving a total of 1170 patients and 1974 implants finding significant better outcome in favour of the implants placed in healed ridges (99.4% implant survival) compared with post-extraction implants (95.6% implant survival).

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Dental implants: smokers have poorer outcomes suggests review

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This review of the impact of smoking on dental implants had broad inclusion criteria and included 107 studies. The findings suggest smoking affects implant failure rates, incidence of postoperative infections, as well as the marginal bone loss.

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Dental implants: platform switching may decrease bone loss

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This review of platform switching for dental implants included 18 RCTs in a meta-analysis and suggests an improvement in marginal bone loss. However, the longest study were only of 3 years duration and the authors recommend the results be interpreted with caution due to the presence of uncontrolled confounding factors in the included studies.

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Dental implants placed in fresh sockets have higher failure rates suggests review

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This review of survival rates of dental implants placed in fresh extraction sockets included 73 studies. However the majority were retrospective with only 5 small RCTs and 26 controlled trials. While the findings suggest that failure rates are higher in extraction sockets the evidence should be interpreted with caution.

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