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To compare the microleakage among experimental adhesives containing nanoclay fillers after the storages of 24 hours and 6 months.

Mousavinasab SM, Atai M, Alavi B - Open Dent J (2011)

Bottom Line: Based on Kruskal -Wallis test, significant differences were found between groups regarding microleakage.The Mann- Whitney test showed that Leakage was significantly lower in Adper Single Bond® compared to the other groups in dentinal margins after 24 hours and 6 months and in enamel margins after 6 months.All the experimental adhesives were effective in reducing enamel leakage after 24 hours, but were not effective in reducing dentinal leakage after 24 hours as well as in enamel and dentinal leakage after a 6-month storage.

View Article: PubMed Central - PubMed

Affiliation: Isfahan University of Medical Sciences, Dental School, Department of Operative Dentistry and Torabinejad Research Centre, Isfahan, Iran.

ABSTRACT

Objectives: To compare the microleakage among experimental adhesives containing nanoclay fillers after the storages of 24 hours and 6 months.

Materials and methods: Class V cavities were prepared on extracted human molars with the occlusal margins located in enamel and the cervical margins in cementum. Phosphoric acid was applied to the enamel and dentin margins.Subsequently, the cavities were treated using four groups of experimental adhesive systems and restored with a resin composite. Adper Single Bond® was used as control group. After 24- hour and 6- month storages, the samples were subjected to thermocycling shocks and then immersed in silver nitrate as well as developer solution and finally evaluated for leakage. The data were analyzed using SPSS software.

Results: Based on Kruskal -Wallis test, significant differences were found between groups regarding microleakage. The Mann- Whitney test showed that Leakage was significantly lower in Adper Single Bond® compared to the other groups in dentinal margins after 24 hours and 6 months and in enamel margins after 6 months. The Wilcoxon Signed Ranks test showed that the enamel leakage in experimental adhesives was significantly lower than dentinal leakage after 24 hours as well as enamel leakage in Adper Single Bond and adhesive with 0.5% PMAA-g-nanoclay was significantly lower than dentinal margins after storage period of 6 months.

Conclusion: All the experimental adhesives were effective in reducing enamel leakage after 24 hours, but were not effective in reducing dentinal leakage after 24 hours as well as in enamel and dentinal leakage after a 6-month storage. No improvement was observed in the microleakage in dentin in both short (24 hrs) and long times (6 months). The high microleakage in the adhesives is probably attributed to the high concentration of HEMA in the recipe of the bonding agent.

No MeSH data available.


Related in: MedlinePlus

Leakage in dentin after 24 hours and 6 months storage.
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Figure 2: Leakage in dentin after 24 hours and 6 months storage.

Mentions: Mean leakage of the tested adhesives in samples incubated for 24 hours in enamel and dentinal margins are shown in Table 2 and Fig. (1). Table 2 also shows the degree of conversion of the adhesive. Mean leakage of the tested adhesives in samples incubated for 6 months in enamel and dentinal margins are shown in Table 3 and Fig. (2).


To compare the microleakage among experimental adhesives containing nanoclay fillers after the storages of 24 hours and 6 months.

Mousavinasab SM, Atai M, Alavi B - Open Dent J (2011)

Leakage in dentin after 24 hours and 6 months storage.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC3091289&req=5

Figure 2: Leakage in dentin after 24 hours and 6 months storage.
Mentions: Mean leakage of the tested adhesives in samples incubated for 24 hours in enamel and dentinal margins are shown in Table 2 and Fig. (1). Table 2 also shows the degree of conversion of the adhesive. Mean leakage of the tested adhesives in samples incubated for 6 months in enamel and dentinal margins are shown in Table 3 and Fig. (2).

Bottom Line: Based on Kruskal -Wallis test, significant differences were found between groups regarding microleakage.The Mann- Whitney test showed that Leakage was significantly lower in Adper Single Bond® compared to the other groups in dentinal margins after 24 hours and 6 months and in enamel margins after 6 months.All the experimental adhesives were effective in reducing enamel leakage after 24 hours, but were not effective in reducing dentinal leakage after 24 hours as well as in enamel and dentinal leakage after a 6-month storage.

View Article: PubMed Central - PubMed

Affiliation: Isfahan University of Medical Sciences, Dental School, Department of Operative Dentistry and Torabinejad Research Centre, Isfahan, Iran.

ABSTRACT

Objectives: To compare the microleakage among experimental adhesives containing nanoclay fillers after the storages of 24 hours and 6 months.

Materials and methods: Class V cavities were prepared on extracted human molars with the occlusal margins located in enamel and the cervical margins in cementum. Phosphoric acid was applied to the enamel and dentin margins.Subsequently, the cavities were treated using four groups of experimental adhesive systems and restored with a resin composite. Adper Single Bond® was used as control group. After 24- hour and 6- month storages, the samples were subjected to thermocycling shocks and then immersed in silver nitrate as well as developer solution and finally evaluated for leakage. The data were analyzed using SPSS software.

Results: Based on Kruskal -Wallis test, significant differences were found between groups regarding microleakage. The Mann- Whitney test showed that Leakage was significantly lower in Adper Single Bond® compared to the other groups in dentinal margins after 24 hours and 6 months and in enamel margins after 6 months. The Wilcoxon Signed Ranks test showed that the enamel leakage in experimental adhesives was significantly lower than dentinal leakage after 24 hours as well as enamel leakage in Adper Single Bond and adhesive with 0.5% PMAA-g-nanoclay was significantly lower than dentinal margins after storage period of 6 months.

Conclusion: All the experimental adhesives were effective in reducing enamel leakage after 24 hours, but were not effective in reducing dentinal leakage after 24 hours as well as in enamel and dentinal leakage after a 6-month storage. No improvement was observed in the microleakage in dentin in both short (24 hrs) and long times (6 months). The high microleakage in the adhesives is probably attributed to the high concentration of HEMA in the recipe of the bonding agent.

No MeSH data available.


Related in: MedlinePlus