Rigid and non-rigid connections between implants and teeth: biological and technical complications.

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Mark-Steven Howe assesses a systematic review looking at the impact of rigid and non-rigid connectors between natural teeth and implants on the biological, functional and/or the prosthetic complication rates. Ten mainly retrospective studies were included providing limited evidence that needs to be interpreted cautiously.

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Complete overdentures retained by mini implants.

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Mark-Steven Howe looks at a review of complete overdentures supported on mini-implants. Although 24 studies are included the majority are small and short term so while good overall overdenture survival was seen the results should be interpreted with caution.

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Resin-bonded fixed dental prostheses: 5 year survival and complication rates

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This review of survival and complication rates of resin-bonded fixed dental prosthesis included 209 studies. The findings suggest overall survival rates of 91.3 % (95%CI; 88–93.7) . The quality of the available studies suggest that this should be interpreted cautiously.

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Single restorations on root filled posterior teeth

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5 studies at high risk of bias were included in this review of the success of restoration in posterior root filled teeth findings suggest that the more tooth remaining teh better the treatment outcome.

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Autotransplantation of permanent teeth with an open apex

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21 methodologically weak studies were included in this review of autotransplantation of permanent teeth with open apex. The findings suggest good survival and success rates however the limited quality of the studies mean the findings should be interpreted with caution.

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Dental Implants: microthreads in crestal area and marginal bone loss.

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This review of the effect of microthreads on marginal bone loss around implants identified 5 small RCTs with relatively short follow up times. While a beneficial effect was noted the clinical relevance will require more high quality studies with longer follow up period to determine.

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Rubber Dam use may increase restoration survival time

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Only 4 studies were included in the Cochrane review of the impact of rubber dam isolation on dental restorations. The findings suggest that using rubber dam may results in lower failure rates

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Dental Implants: survival rate in irradiated patients

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40 studies were identified for this review of dental implants in irradiated patients. While survival rates were good, they were lower than in non-irradiated areas. As the majority of the included studies were retrospective the findings should be viewed cautiously.

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Laminate veneers: incisal coverage or not?

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This review of difference designs of laminate veneers included 8 studies demonstrating no difference between those with incisal coverage and those without. However the studies were small and there was a great deal of variation so the results should be interpreted cautiously.

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Fixed dental prostheses: rigid and non-rigid connections to implants

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This review considers partial fixed dental prostheses (FDPs) supported by implants and teeth. 10 small limited quality studies were included and suggest they may be an alternative to implant supported FDPs.

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