Study suggests increased failure risk in root treated teeth with less coronal structure restored with fibre post

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The aim of this study was to assess whether the amount of residual coronal structure and the type of cement used for fibre post luting (self-adhesive cement vs. composite core material) affected the four-year survival of root-filled premolars. Patients requiring endodontic treatment and single-unit crown restoration of premolars were eligible.  Patients were divided into two [read the full story…]

Currently no evidence to support repairing or replacing resin composite fillings for adults

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Over the past 30 years there has been an increase in the use of tooth-coloured composite resin filing materials as an alternative to amalgam for restoring posterior teeth.  Recent technical and material developments have improved the limitations of the early materials which were more likely to fail because of shrinkage, loss of form poor wear [read the full story…]

Trial shows similar survival for direct and indirect resin composite restoration of fractured cusps

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Cusp fractures of restored posterior teeth are a frequent occurrence with the majority being reported as being supra gingival.  While crowing the tooth is a conventional treatment approach it does require removal of substantial tooth substance.  Adhesive restorations are a potential alternative approach and can be undertaken using direct or indirect approaches.  The aim of [read the full story…]

No differences seen in marginal quality of the microhybrid composite restorations placed with regular and high-power polymerisation protocols at five years

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Composite resin restorations are becoming a regular element of restorative dental care.  Usually they are photo-polymerised, and polymerization protocols are considered to be one potential factor in the marginal quality of these restorations.  The aim of this study was to compare the marginal quality of composite restorations employing two polymerisation protocols, namely regular versus high [read the full story…]

Study suggest 84% survival of composite filings in children and adolescents after eight years

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The aim of this study was to assess the durability of Class I and class II composite resin restorations (CRR) in children and adolescents placed in Public Dental Health Service (PDHS ) clinics. The was a prospective study all children and adolescents up to 18 years treated between November 1998 and December 2002 in all [read the full story…]

Critical summaries from the American Dental Association Center for Evidence-Based Dentistry

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Two new critical summaries are now available at the ADA-EBD site The first one is of a 2011 review by  Yengopal and Mickenautsh; The aim of the review was to assess whether resin-modified glass-ionomer cement (RM-GIC) offered a significant caries-preventive effect compared with resin-based composite (RBC)? The appraiser generally considers the review to be well [read the full story…]

No strong evidence available to support any differences in the clinical performance of ceramic inlays and other posterior restorations

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The use of ceramic materials to restoring posterior teeth has been increasing since the 1990s, and in 2003 a Cochrane review by Hayashi and Yeung was published .  The aim of this review was to update that 2003 review by evaluating the clinical effectiveness of ceramic inlays including all articles published since 2002. The PubMed, [read the full story…]

Repair as an alternative to replacement of dental restorations

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Replacement of  defective restorations is the commonest procedure carried out in general dental practice.  Replacement generally means some further loss of tooth substance and enlargement of the restoration.  Alternatives to full replacement have improved restorations and increased longevity. The aim of this study was to estimate the median survival time (MST) of marginal sealing, repair [read the full story…]

Sectional or circumferential matrix systems for direct composite restorations?

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When restoring teeth establishing good contact points between adjacent teeth is important to minimise food packing. The aim of this study was to investigate the influence of cavity preparation (MO/DO/MOD) and type of matrix system on proximal contact tightness of direct posterior composite restorations. 85 patients requiring either a two- or three surface Class II [read the full story…]