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Change of Trial components
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One of the main difficulties encountered in esthetic dentistry is the complexity associated with shade matching and layering technique to achieve optimal esthetic outcomes. To ensure an esthetic outcome, an imperceptible match of the color of the restorative material to that of the tooth is of utmost importance. Recently, a new shade matching composite that utilizes "smart chromatic technology", developed by Tokuyama was claimed to be able to capture the structural color of its surroundings teeth. Our main objective is to assess the blending capacity of OMNICHROMA composite material in anterior restorations of patients attending the Jordan University Hospital. Both visual and instrumental measurements will be performed and the differences between the shade of the composite resin and the tooth structure will be measured. In addition, multi chroma composite restorations will be placed for the purpose of comparison (control).
In the present study, the restorations will be placed under rubber dam isolation for moisture control. The cavities will be prepared according to the concepts of minimal invasive dentistry. Prior to placing the composite resin, the margins of the cavities will be finished using ultra fine grit diamond burs·and beveled in a 1-mm area. Deep cavities suspected to be near the pulp be lined with RMGI. Inclusion criteria: class Ill and Class IV carious lesions.
The enamel margins of the cavities will be acid etched for 60s with 37% phosphoric acid and then rinsed thoroughly with water spray. Afterwards, the dentin bonding system will be applied, left undisturbed for 20 s and then excess removed using an air syringe and light cured for 20s. The restorative composite material will be placed in incremental layers, adapted, each layer cured for 40s. After polymerization, the restorations will be finished under profuse water spray using diamonds, Sof-Lex finishing discs and polishers.
All restorations will be placed by one dentist (Pl). Written informed consent will be provided to all participants prior to starting the treatment
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Anterior restorations using single shade OMNICHROMA composite | Experimental | Anterior class III and Class IV cavities will be restored using single shade composite material according to standard protocols of etching, bonding and composite placement. |
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| Anterior restorations using multi-shade composite | Active Comparator | Shade selection for the tooth will be performed prior to the placement of the restoration. Anterior class III and Class IV cavities will be restored using multi-shade composite material according to standard protocols of etching, bonding and composite placement. |
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| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| OMNISHADE | Other | Anterior dental cavities (Class III, Class IV) will be restored with an omnishade composite material |
|
| Measure | Description | Time Frame |
|---|---|---|
| Instrumental Color assessment | Color difference between restoration & tooth will be assessed using VITASHADE spectrophotometer | 2 years |
| Visual color assessment | Color difference between restoration & tooth will be evaluated by independent observers | 2 years |
| Measure | Description | Time Frame |
|---|---|---|
| Patient satisfaction | Patient satisfaction of shade matching of the restoration will be evaluated using visual analogue scale | 2 years |
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Inclusion Criteria:
Exclusion Criteria:
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| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| The university ofJordan | Amman | 11181 | Jordan |
| PubMed Identifier | Type | Citation | Retractions |
|---|---|---|---|
| 23851132 | Background | Mikhail SS, Schricker SR, Azer SS, Brantley WA, Johnston WM. Optical characteristics of contemporary dental composite resin materials. J Dent. 2013 Sep;41(9):771-8. doi: 10.1016/j.jdent.2013.07.001. Epub 2013 Jul 12. | |
| 16378637 | Background | Paravina RD, Westland S, Kimura M, Powers JM, Imai FH. Color interaction of dental materials: blending effect of layered composites. Dent Mater. 2006 Oct;22(10):903-8. doi: 10.1016/j.dental.2005.11.018. Epub 2005 Dec 27. |
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Data will be made available for other researchers
2 years
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Blind Observers will be asked to assess the shade matching capacity of the restorative material on a Likert Scale.
| MULTISHADE | Other | Anterior dental cavities (Class III, Class IV) will be restored with conventional multishade composite material. |
|
| Instrumental Shade Analysis | Diagnostic Test | Assessment will be performed by single operator using spectrophotometer (EASYSHADE) to detect color difference between tooth and restoration |
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| Visual Shade Analysis | Other | Visual assessment will be performed by two calibrated specialists to evaluate shade matching between the tooth and restoration |
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| Patient satisfaction | Other | Patient satisfaction of the final shade match will be assessed on a visual analogue scale |
|
| 16085303 | Background | Paravina RD, Westland S, Imai FH, Kimura M, Powers JM. Evaluation of blending effect of composites related to restoration size. Dent Mater. 2006 Apr;22(4):299-307. doi: 10.1016/j.dental.2005.04.022. Epub 2005 Aug 8. |
| 25242100 | Background | Tanaka A, Nakajima M, Seki N, Foxton RM, Tagami J. The effect of tooth age on colour adjustment potential of resin composite restorations. J Dent. 2015 Feb;43(2):253-60. doi: 10.1016/j.jdent.2014.09.007. Epub 2014 Sep 19. |
| 31095870 | Background | Pereira Sanchez N, Powers JM, Paravina RD. Instrumental and visual evaluation of the color adjustment potential of resin composites. J Esthet Restor Dent. 2019 Sep;31(5):465-470. doi: 10.1111/jerd.12488. Epub 2019 May 16. |