Microleakage evaluation of novel nano-hydroxyapatite-silica glass ionomer cement

Aims and Objectives: To analyze the microleakage of nano-hydroxyapatite-silica glass ionomer cement (nano-HA-SiO2-GIC) and compare it with conventional glass ionomer cement (cGIC). Materials and Methods: Twenty caries-free human premolar teeth were used. A standardized box-shaped class V cavity was...

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Bibliographic Details
Published in:Journal of international oral health 2019-11, Vol.11 (6), p.357-362
Main Authors: Moheet, Imran, Luddin, Norhayati, Rahman, Ismail, Masudi, Sam'an, Kannan, Thirumulu, Abd Ghani, Nik Rozainah
Format: Article
Language:English
Subjects:
Bond strength
Care and treatment
Cement
Cementum
Chemical properties
Chemicals
Cytotoxicity
Dental adhesives
Dental caries
Dental cement
Dental enamel
Dental glass ionomer cements
Dentin
Enamel
Hydroxyapatite
Ionomers
Mechanical properties
Methylene blue
Oral hygiene
Risk factors
Silica
Silicon dioxide
Statistical analysis
Teeth
Testing
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Summary:Aims and Objectives: To analyze the microleakage of nano-hydroxyapatite-silica glass ionomer cement (nano-HA-SiO2-GIC) and compare it with conventional glass ionomer cement (cGIC). Materials and Methods: Twenty caries-free human premolar teeth were used. A standardized box-shaped class V cavity was prepared on the buccal surfaces at the cemento-enamel junction, with the occlusal margin (OM) set on enamel and gingival margin (GM) was placed on the cementum. Teeth were randomly assigned to two experimental groups of 10 teeth each and restored as follows: group 1, cGIC (Fuji IX) and group 2, nano-HA-SiO2 GIC. After 24h of immersion in distilled water, the teeth were thermocycled (500 cycles and 5°C-55°C). Following that, the teeth were placed in 2% methylene blue solution and stored at room temperature for 24h. The microleakage along the tooth-restoration interface was recorded. Independent sample t-test (two-tailed) was used to analyze the data. Results with P < 0.5 were considered statistically significant. Results: Microleakage in general was greater at GMs as compared to OMs for both the materials. Nano-HA-SiO2-GIC exhibited lower microleakage at occlusal level (0.2 ± 0.42) as compared to cGIC (0.5 ± 0.71), whereas, at GM nano-HA-SiO2-GIC displayed significantly less microleakage (2.7 ± 0.67) compared to cGIC (3 ± 0.00). Conclusion: Nano-HA-SiO2 glass ionomers showed less microleakage both at OMs and GMs compared to that at cGIC (Fuji IX).
ISSN:0976-7428
0976-1799
DOI:10.4103/jioh.jioh_132_19