‘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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Bruxism: Are botulinum toxin injections helpful?

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Only 5 small low quality studies were included in this review of botulinum toxin (BoNT-A ) injections for sleep bruxism. 3 of the included studies were RCTs and while a potential benefit from use of BoNT-A treatment was suggested the findings should be treated very cautiously.

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Dental pulp testing: insufficient evidence to evaluate clinical performance

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This review of pulp sensibility and vitality tests identified 8 studies (4 Cohorts, 4 Case-controlled) . The number of studies matching the inclusion criteria did not provide a sufficient foundation to evaluate the clinical performance of pulp vitality tests.

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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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Caries lesions in enamel – Still drill and fill?

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This review of dental clinicians thresholds for intervention in teeth with caries included 30 studies over a 31year time span. 21% (95%CI;15%-28%) of dentists/therapists would intervene invasively for lesions confined to enamel doubling in high risk patients with little changed being noted over time.

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Post-retained single crowns performance linked to amount of coronal structure

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This review of post-retained crowns on endodontically treated teeth included 9 RCTs. Findings suggest that that the number of remaining coronal walls and the use of posts are key factors for the success/ survival of these restorations. However the quality of the available evidence is low.

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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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