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Effect of 38% carbamide peroxide on the microleakage of silorane-based versus methacrylate-based composite restorations.

Hashemi Kamangar SS, Ghavam M, Mahinfar N, Pourhashemi SJ - Restor Dent Endod (2014)

Bottom Line: No significant differences were found between composites in the control groups in enamel (p = 0.171) or dentin (p = 0.094) margins.After bleaching, microleakage of Z250 (in enamel [p = 0.867] or dentin [p = 0.590] margins) and Z350 (in enamel [p = 0.445] or dentin [p = 0.591] margins) did not change significantly, but the microleakage of P90 significantly increased in both enamel (p = 0.042) and dentin (p = 0.002) margins.Microleakage of silorane-based composite significantly increased after bleaching.

View Article: PubMed Central - PubMed

Affiliation: Department of Operative Dentistry, Dental School, Tehran University of Medical Sciences, International Campus, Tehran, Iran.

ABSTRACT

Objectives: This study aimed to assess the effect of 38% carbamide peroxide on the microleakage of class V cavities restored with either a silorane-based composite or two methacrylate-based composites.

Materials and methods: A total of 96 class V cavities were prepared on the buccal surface of extracted human teeth with both enamel and dentin margins and were randomly assigned into three groups of Filtek P90 (3M-ESPE) + P90 system adhesive (3M-ESPE)(group A), Filtek Z250 (3M-ESPE) + Adper Prompt L-Pop (3M-ESPE)(group B) and Filtek Z350XT (3M-ESPE) + Adper Prompt L-Pop (group C). Half of the teeth were randomly underwent bleaching (38% carbamide peroxide, Day White, Discus Dental, applying for 15 min, twice a day for 14 day) while the remaining half (control) were not bleached. Dye penetration was measured following immersion in basic fuchsine. Data were statistically analyzed using Kruskal-Wallis and Mann-Whitney U tests at a level of 0.05.

Results: No significant differences were found between composites in the control groups in enamel (p = 0.171) or dentin (p = 0.094) margins. After bleaching, microleakage of Z250 (in enamel [p = 0.867] or dentin [p = 0.590] margins) and Z350 (in enamel [p = 0.445] or dentin [p = 0.591] margins) did not change significantly, but the microleakage of P90 significantly increased in both enamel (p = 0.042) and dentin (p = 0.002) margins.

Conclusions: No significant differences were noted between the bleached and control subgroups of two methacrylate-based composites in enamel or dentin margins. Microleakage of silorane-based composite significantly increased after bleaching.

No MeSH data available.


Related in: MedlinePlus

Representative microscopic images showing the scores of microleakage, taken under a stereomicroscope (at a ×40 magnification). (a) score 0; (b) score 1; (c) score 2; (d) score 3.
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Figure 1: Representative microscopic images showing the scores of microleakage, taken under a stereomicroscope (at a ×40 magnification). (a) score 0; (b) score 1; (c) score 2; (d) score 3.

Mentions: Apex, root and furcation area were sealed by a layer of adhesive wax. All tooth surfaces were sealed with 2 layers of nail polish except for the restored area and 1 mm around it. The specimens were then immersed in 2% basic fuchsine solution and stored in an incubator at 37℃ for 24 hours. The teeth were then washed and dried with sterile gauze and air spray. Each tooth was separately mounted in a special mold using clear polyester resin. After that they were longitudinally sectioned by a cutting machine with 0.82 mm sectioning blade thickness (Mecatome T201A, Presi, Brié-et-Angonnes, France). Gingival and occlusal marginal microleakage was assessed under a stereomicroscope (Nikon, Tokyo, Japan) with ×40 magnification and scored as below (Figure 1):


Effect of 38% carbamide peroxide on the microleakage of silorane-based versus methacrylate-based composite restorations.

Hashemi Kamangar SS, Ghavam M, Mahinfar N, Pourhashemi SJ - Restor Dent Endod (2014)

Representative microscopic images showing the scores of microleakage, taken under a stereomicroscope (at a ×40 magnification). (a) score 0; (b) score 1; (c) score 2; (d) score 3.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4125580&req=5

Figure 1: Representative microscopic images showing the scores of microleakage, taken under a stereomicroscope (at a ×40 magnification). (a) score 0; (b) score 1; (c) score 2; (d) score 3.
Mentions: Apex, root and furcation area were sealed by a layer of adhesive wax. All tooth surfaces were sealed with 2 layers of nail polish except for the restored area and 1 mm around it. The specimens were then immersed in 2% basic fuchsine solution and stored in an incubator at 37℃ for 24 hours. The teeth were then washed and dried with sterile gauze and air spray. Each tooth was separately mounted in a special mold using clear polyester resin. After that they were longitudinally sectioned by a cutting machine with 0.82 mm sectioning blade thickness (Mecatome T201A, Presi, Brié-et-Angonnes, France). Gingival and occlusal marginal microleakage was assessed under a stereomicroscope (Nikon, Tokyo, Japan) with ×40 magnification and scored as below (Figure 1):

Bottom Line: No significant differences were found between composites in the control groups in enamel (p = 0.171) or dentin (p = 0.094) margins.After bleaching, microleakage of Z250 (in enamel [p = 0.867] or dentin [p = 0.590] margins) and Z350 (in enamel [p = 0.445] or dentin [p = 0.591] margins) did not change significantly, but the microleakage of P90 significantly increased in both enamel (p = 0.042) and dentin (p = 0.002) margins.Microleakage of silorane-based composite significantly increased after bleaching.

View Article: PubMed Central - PubMed

Affiliation: Department of Operative Dentistry, Dental School, Tehran University of Medical Sciences, International Campus, Tehran, Iran.

ABSTRACT

Objectives: This study aimed to assess the effect of 38% carbamide peroxide on the microleakage of class V cavities restored with either a silorane-based composite or two methacrylate-based composites.

Materials and methods: A total of 96 class V cavities were prepared on the buccal surface of extracted human teeth with both enamel and dentin margins and were randomly assigned into three groups of Filtek P90 (3M-ESPE) + P90 system adhesive (3M-ESPE)(group A), Filtek Z250 (3M-ESPE) + Adper Prompt L-Pop (3M-ESPE)(group B) and Filtek Z350XT (3M-ESPE) + Adper Prompt L-Pop (group C). Half of the teeth were randomly underwent bleaching (38% carbamide peroxide, Day White, Discus Dental, applying for 15 min, twice a day for 14 day) while the remaining half (control) were not bleached. Dye penetration was measured following immersion in basic fuchsine. Data were statistically analyzed using Kruskal-Wallis and Mann-Whitney U tests at a level of 0.05.

Results: No significant differences were found between composites in the control groups in enamel (p = 0.171) or dentin (p = 0.094) margins. After bleaching, microleakage of Z250 (in enamel [p = 0.867] or dentin [p = 0.590] margins) and Z350 (in enamel [p = 0.445] or dentin [p = 0.591] margins) did not change significantly, but the microleakage of P90 significantly increased in both enamel (p = 0.042) and dentin (p = 0.002) margins.

Conclusions: No significant differences were noted between the bleached and control subgroups of two methacrylate-based composites in enamel or dentin margins. Microleakage of silorane-based composite significantly increased after bleaching.

No MeSH data available.


Related in: MedlinePlus