UTCAT854, Found CAT view, CRITICALLY APPRAISED TOPICs

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Title

Polishability Of Nanofilled Resin Composites Compared To Microfilled Resin Composites

Clinical Question

In an adult patient requiring an esthetic resin composite restoration, would the use of nanofilled resin composites produce a better polishability compared to microfilled resin composites longterm?

Clinical Bottom Line

The use of nanofilled composites has shown to produce a better polishability in some clinical settings, however, the validity of the evidence suggests a need for further clinical investigations. (See Comments on the CAT below)

Best Evidence

(you may view more info by clicking on the PubMed ID link)

PubMed ID	Author / Year	Patient Group	Study type (level of evidence)
#1) 15736840	Yap/2004	N/A	Lab Study
Key results	At all time intervals, composite materials based on both the ormocer and nanomer technology were smoother than all other materials evaluated. This shows that nanomer technology may have an effect on polishability of the composite materials.
#2) 17635330	Da Costa/2007	N/A	Lab Study
Key results	The nanofill (Supreme) and minifill (Esthet-X) composites presented a surface roughness comparable to a microfill (Durafill), therefore no significant differences between the two were of importance. These results were independent of the polishing system used, and a gloss comparable to a microfill, when polished with a one-step system (Pogo).
#3) 17877626	Senawongse/2007	N/A	Lab Study
Key results	For the nanofill resin composites, there were no significant differences in surface roughness between the two polishing methods or among the unpolished surfaces, therefore no matter the polishing method did not play a significant role in the outcome. The smoothest surfaces after polishing and brushing were found through the use of nanofill resin composites made with nanoclusters demonstrated.

Evidence Search

Search nanofill composite resinSearch (#13) AND #14Search "Composite Resins"[Mesh]Search "Dental Polishing"[Mesh]

Comments on
The Evidence

Although the Yap article did consider the time involvement of the polishability of resin composites compared to the other clinical trials found, there is some discrepancy of results between the articles. The Yap and Senawongse articles show that there is some advantage to using nanofilled composites, but the Da Costa article states that the two are comparable. No randomized controlled trials or meta-analysis were done.

Applicability

There is some slight evidence for the use of nanofilled composites over microfilled resins in terms of long-term effects on polishability. Esthetically, the two types of filler material seem to be comparable in terms of surface roughness. Therefore, the use of nanofilled technology in filler materials shows some advantage over microfilled resins, although more investigation into the subject would be required to validate the latest evidence.

Specialty/Discipline

(General Dentistry) (Prosthodontics)

Keywords

Nanofill, Polishing

ID#

854

Date of submission:

04/12/2011

E-mail

koenigkl@uthscsa.livemail.edu

Author

Kennon L. Koenig

Co-author(s)

Co-author(s) e-mail

Faculty mentor/Co-author

Rita Renee Parma, DDS

Faculty mentor/Co-author e-mail

parma@uthscsa.edu

Basic Science Rationale (Mechanisms that may account for and/or explain the clinical question, i.e. is the answer to the clinical question consistent with basic biological, physical and/or behavioral science principles, laws and research?)	post a rationale
None available

Comments and Evidence-Based Updates on the CAT
(FOR PRACTICING DENTISTS', FACULTY, RESIDENTS and/or STUDENTS COMMENTS ON PUBLISHED CATs)

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