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CLASS V RESTORATIONS (class + v_restoration)
Selected AbstractsINFLUENCE OF CAVITY CONFIGURATION ON MICROLEAKAGE AROUND CLASS V RESTORATIONS BONDED WITH SEVEN SELF-ETCHING ADHESIVESJOURNAL OF ESTHETIC AND RESTORATIVE DENTISTRY, Issue 2 2004Jorge Perdigão DMD [source] Provision of Atraumatic Restorative Treatment (ART) restorations to Chinese pre-school children , a 30-month evaluationINTERNATIONAL JOURNAL OF PAEDIATRIC DENTISTRY, Issue 1 2001E.C.M. Summary.Objectives. The objectives of this study were: to provide restorations using the ART approach to pre-school children in Southern China in a kindergarten environ-ment, using a high-strength glass-ionomer restorative material; to assess the accept-ability of this approach and to evaluate on a longitudinal basis the restorations placed. Sample and methods. A total of 170 ART restorations were placed in 95 children, aged 5·1 ± 0·7 years, by seven final-year dental students using standard ART procedures and hand instruments. The restorations were evaluated every six months thereafter by two calibrated independent examiners using explorers and mouth-mirrors. Results. 93% of the children reported that they did not feel pain during treatment and 86% were willing to receive ART restorations again. The cumulative 12- and 30-month survival rates of Class I restorations were 91% and 79%, respectively. The corresponding figures for Class V restorations were 79% and 70%, while those for Class II restorations were 75% and 51%. The failure rates of Class III and IV restor-ations were high with more than half of them scored as missing within the first year. Conclusions. The ART approach was shown to be acceptable to Chinese pre-school children for providing restorative dental care outside the traditional clinical setting. The success rates were high for Class I and V restorations in primary teeth, modest for Class II, and low for Class III and IV restorations. [source] The effect of interfacial failure around a class V composite restoration analysed by the finite element methodJOURNAL OF ORAL REHABILITATION, Issue 2 2000J. S. Rees Partial failure around the tooth,composite interface of a class V restoration is common due to the effects of polymerization shrinkage. The effect that this has on the force distribution of the remaining intact interfaces has not been investigated. The aim of this study was to quantify the effect that partial failure of an isolated cavity wall interface had on the force distribution around the remaining intact interfaces of a class V composite restoration in a lower first premolar using a two-dimensional plane strain finite element model. Partial failure resulted in a 4,6-fold increase in peak tensile and shear forces compared to a tooth with a fully intact cavity wall interface. In some instances, the peak stresses were greater than the known bond strengths of composite to dentine. [source] Resin composite shrinkage and marginal adaptation with different pulse-delay light curing protocolsEUROPEAN JOURNAL OF ORAL SCIENCES, Issue 6 2005Ivo Krejci The aims of this study were, first, to measure shrinkage induced by different methods of pulse-delay light curing and, second, to verify their influence on the marginal adaptation of class V restorations in enamel and dentin. Eight groups, comprising seven groups (n = 6) with different pulse-delay parameters and a control group, were compared for dynamic linear displacement and force by using a fine hybrid composite. Based on these results, the pulse-delay curing procedure with the lowest shrinkage force was chosen and tested against the control group with respect to marginal adaptation in class V restorations (n = 8) before and after simultaneous thermal and mechanical loading. Statistically significant differences between groups were found for both shrinkage properties tested, with one pulse-delay group giving the lowest overall shrinkage values. However, the percentages of ,continuous margin' of this group, and of the control before and after loading, were not significantly different in dentin, whereas a significantly lower percentage of ,continuous margin' was detected in the pulse-delay group in enamel after loading. [source] | ||||||||||