Remedy Publications LLC. Journal of Dentistry and Oral Biology 2017 | Volume 2 | Issue 4 | Article 1039 1 Dear Editor, International consensus over environmental mercury and promising long term clinical reports have seen direct resin composites emerge as the material of choice in most nations. Additionally, recent global economic constraints and a greater focus on minimum intervention have seen a further shiﬅ away from indirect ceramic and alloy restorations. Manufacturers encouraged by research are busily producing the latest and greatest resin restoratives with excellent aesthetics and good handling. Two main properties remain elusive. e ability to obtain a strong durable bond to the remaining tooth substrate not only provides a hermetic seal but also allows the physical properties of the restorative material to support the tooth. Low polymerization setting stresses are critical here and the new flowable bulk fill materials are emerging as a good solution. Secondly, long term strength and toughness requires greater filler loading or fibre reinforcement. e new nano hybrids with elastic moduli approaching that of dentine (c. 17 GPa) are useful here. erefore, at this stage of its development I suggest we need three materials: a durable bonding agent (preferably non HEMA); a very low stress intermediate material (preferably thin) and a tough finishing material. Letter to Editor: Journal of Dentistry and Oral Biology OPEN ACCESS *Correspondence: Paul Shouha, Department of Dentistry, Sydney Aesthetic Smiles and Skin, Bardwell Park NSW 2207, Australia, E-mail: offi[email protected] Received Date: 30 Jan 2017 Accepted Date: 10 Feb 2017 Published Date: 12 Feb 2017 Citation: Shouha P. Letter to Editor: Journal of Dentistry and Oral Biology. J Dent Oral Biol. 2017; 2(4): 1039. Copyright © 2017 Paul Shouha. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. Letter to Editor Published: 12 Feb, 2017 Paul Shouha* Department of Dentistry, Sydney Aesthetic Smiles and Skin, Australia

Letter to Editor: Journal of Dentistry and Oral Biology · Letter to Editor: Journal of Dentistry and Oral Biology. OPEN ACCESS *Correspondence: Paul Shouha, Department of Dentistry,

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Remedy Publications LLC.

Journal of Dentistry and Oral Biology

2017 | Volume 2 | Issue 4 | Article 10391

Dear Editor,

International consensus over environmental mercury and promising long term clinical reports have seen direct resin composites emerge as the material of choice in most nations. Additionally, recent global economic constraints and a greater focus on minimum intervention have seen a further shift away from indirect ceramic and alloy restorations.

Manufacturers encouraged by research are busily producing the latest and greatest resin restoratives with excellent aesthetics and good handling. Two main properties remain elusive. The ability to obtain a strong durable bond to the remaining tooth substrate not only provides a hermetic seal but also allows the physical properties of the restorative material to support the tooth. Low polymerization setting stresses are critical here and the new flowable bulk fill materials are emerging as a good solution. Secondly, long term strength and toughness requires greater filler loading or fibre reinforcement. The new nano hybrids with elastic moduli approaching that of dentine (c. 17 GPa) are useful here. Therefore, at this stage of its development I suggest we need three materials: a durable bonding agent (preferably non HEMA); a very low stress intermediate material (preferably thin) and a tough finishing material.

Letter to Editor: Journal of Dentistry and Oral Biology

OPEN ACCESS

*Correspondence:Paul Shouha, Department of Dentistry,

Sydney Aesthetic Smiles and Skin, Bardwell Park NSW 2207, Australia,

E-mail: [email protected] Date: 30 Jan 2017Accepted Date: 10 Feb 2017Published Date: 12 Feb 2017

Citation: Shouha P. Letter to Editor: Journal of

Dentistry and Oral Biology. J Dent Oral Biol. 2017; 2(4): 1039.

the Creative Commons Attribution License, which permits unrestricted

use, distribution, and reproduction in any medium, provided the original work

is properly cited.

Letter to EditorPublished: 12 Feb, 2017

Paul Shouha*