Insufficient cure under the condition of high irradiance and short irradiation time.

PURPOSE Evaluation of water sorption and solubility of contemporary resin-based filling materials. METHODS Specimens of Herculite (HE), Point 4 (P4), TetricCeram (TC), Miris (MI), TetricCeram HB (HB), Solitaire 2 (SO), SureFil (SU), Definite (DE), Admira (AD), Dyract AP (DY), Compoglass F (CO), and TetricFlow (TF) were prepared according to ISO 4049. Water sorption and solubility were measured after water storage at 37 degrees C for 7 days. RESULTS Water sorption was HE 14 microg mm(-3), P4 17 microg mm(-3), TC 12 microg mm(-3), MI 13 microg mm(-3), HB 9 microg mm(-3), SO 18 microg mm(-3), SU 9 microg mm(-3), DE 14 microg mm(-3), AD 27 microg mm(-3), DY 19 microg mm(-3), CO 23 microg mm(-3), and TF 19 microg mm(-3). Solubility was HE 3 microg mm(-3), P4 3 microg mm(-3), TC 1 microg mm(-3), MI 0 microg mm(-3), HB 0 microg mm(-3), SO 3 microg mm(-3), SU 0 microg mm(-3), DE 1 microg mm(-3), AD 2 microg mm(-3), DY 4 microg mm(-3), CO -2 microg mm(-3), and TF 1 microg mm(-3). CONCLUSION All materials met the corresponding requirement in ISO 4049. Filler load negatively correlated with water sorption but not with solubility. There was an influence of the resin matrix, too. No significant differences were found between composites, ormocers, and compomers.

Water sorption and solubility of contemporary resin-based filling materials.

Clinical Relevance The thickness of the residual dentin is a critical factor in the reducing thermal transfer to pulp, and this transfer varies with the curing unit used.

Comparison of Temperature Changes in the Pulp Chamber Induced by Various Light Curing Units, In Vitro

https://www.research.manchester.ac.uk/portal/files/159393139/Outcomes_of_Ultra_Fast_3_s_Photo_Cure_in_a_RAFT_Modified_Resin_Composite.pdf

Outcomes of ultra-fast (3 s) photo-cure in a RAFT-modified resin-composite.

The relationship between dentine hypersensitivity, dietary acid intake and erosive tooth wear.

Our understanding of the aetiology of dentine hypersensitivity (DH) has changed dramatically over the past few decades. It is no longer an enigma, but other problems exist. The prevalence of DH in the world and in particular in the UK is increasing, predominately due to increases in tooth wear and the erosive dietary intake in the younger population. DH is increasingly reported in all age groups and is shown to provide clinical indication of an active erosive tooth wear. As the population ages and possibly retain teeth for longer, the likelihood of tooth wear and DH could increase. This paper describes the prevalence, aetiology, diagnosis and management of DH in relation to tooth wear, which work together through a surface phenomenon. The aim is to raise awareness of the conditions and to help inform a prevention strategy in an ageing population, which starts from younger age groups to reduce disease into older age.

/pdf/the-rise-of-dentine-hypersensitivity-and-tooth-wear-in-an-3ccowdqvfn.pdf

The rise of dentine hypersensitivity and tooth wear in an ageing population

The effect of toothbrush abrasion force on dentine hypersensitivity in-vitro.

A comparative study of the properties of dental resin composites polymerized with plasma and halogen light.

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The rise of dentine hypersensitivity and tooth wear in an ageing population

The effect of toothbrush abrasion force on dentine hypersensitivity in-vitro.

A comparative study of the properties of dental resin composites polymerized with plasma and halogen light.