restorative-dentistry-prosthodontics-2017-posters-abstracts

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May 01-02, 2017 Toronto, Canada

International Conference on

Restorative Dentistry and Prosthodontics

Volume 5, Issue 1 (Suppl)

J Oral Hyg Health

ISSN: 2332-0702 JOHH, an open access journal

Restorative Dentistry & Prosthodontics 2017

May 01-02, 2017

J Oral Hyg Health 2017, 5:1 (Suppl)

Surface roughness of direct and indirect resin composites: Effect of tooth brushing and soft drinks

Qaid Abdullah Qaid Barman

Mansoura University, Egypt

Background:

Surface roughness of composite restorations in different storage media over time is a common problem in esthetic

dentistry, causing the need to replace the restoration, and spending a great deal of cost and time to patients. The indirect techniques

of dental resin composites reveal an increased important of the physical and mechanical properties of the restorations, including

surface roughness.

Aim:

The purpose of the current study was to evaluate the effect of tooth brushing and soft drinks on surface roughness of direct and

indirect resin composites.

Materials & Methods:

A total of 360 standard resin composite disc shape specimens (A3 shade) were constructed, using split teflon

mold with diameter of 10 mm and thickness of 2 mm. The disc shape samples were constructed from three brand of resin composites

namely: Group 1: Direct microfill resin composite (Helimolar from IvoclarVivadent), Group 2: Direct nanofill resin composite (Z350

XT from 3M) and Group 3: Indirect microfill resin composite (SR NEXCO from IvoclarVivadent) equally (n=120). For all the three

groups, the specimens were caused for 20 seconds from each side through the glass slaps, then cured additional 20 seconds for

each side after removal of the glass slaps by using light emitting diode curing unit LED (900 MW/cm2), then, for the indirect resin

composite (Group 3), curing was performed using a special oven for 10 minutes. All the groups were divided into two subgroups,

subgroup 1 with brushing by medium type electrical tooth brushing (oral-B) and subgroup 2 without brushing. Each subgroup was

further subdivided into three divisions, immediate, after 4 weeks and after 8 weeks. The specimens were stored in three different

storage media: Red bull, sprite and artificial saliva. The surface roughness tests by Talysurf instrument were carried out often for each

storage period according to the study design.

Results:

Regarding the surface roughness in microfill direct resin composite with brushing and non-brushing, there was in general

a significant difference between the three types of storage media at fourth and eighth weeks. Regarding the surface roughness in

microfill indirect resin composite with brushing and non-brushing, there was in general a significant difference between the three

types of storage media at fourth and eighth weeks. Regarding the surface roughness in nanofill direct resin composite with brushing

and non-brushing, there was in general a significant difference between the three types of storage media at fourth and eighth weeks.

Conclusions:

With surface roughness increase and the roughness with time in all groups, there was significant difference between

baseline and 4 weeks and between baseline and 8 weeks, there was no significant difference between 4 weeks and 8 weeks and there

was no significant difference between brushing and non-brushing at indirect microfill resin composite.