The secondary alveolar bone grafting is an integral component of contemporary rehabilitation of the patients with cleft lip and palate with alveolar defects. Iliac bone graft is frequent secondary graft used in the correction of alveolar defects. There is successful rehabilitation of osseous component post operatively.
Background: A successful restorative material forms a better adhesion, resist the microleakage and releases fluoride. However, existing glass ionomer cements cannot be used as a posterior restorative material in stress bearing areas. A new ionomer called Zirconomer, zirconia reinforced glass ionomer claims to exhibit high physical and biological properties.
Aim: To assess and compare the microleakage, compressive strength, flexural strength and fluoride release from zirconomer with ketac silver.
Materials & Methods: On twenty caries free premolar teeth (10 per each group), a class v cavity was restored with zirconomer and ketac silver. The microleakage was assessed using dye penetration test and stereomicroscope. The compressive and flexural strengths of these materials were measured using Instron Universal testing machine. The amount of fluoride released from the modified ionomers at pH 5 and pH 7 was estimated using Orion fluoride specific electrode. The obtained data was then subjected to statistical analysis.
Results: Data was analysed using paired t-test for intergroup comparisons and unpaired t-test for intragroup comparisons. The overall microleakage (0.5±0.48) of zirconomer was significantly less (p=0.000) compared to ketac silver (1.9±0.83). Zirconomer demonstrated a significant higher compressive strength (330.25±60.14), flexural strength (33.058±2.36) than ketac silver (p= 0.000). Zirconomer demonstrated high fluoride release from day 1 to day 7 at both pH 5 and pH 7.
Conclusion: Zirconomer demonstrated better physical and biological properties compared with ketac silver.
Angiofibroma or juvenile nasopharyngeal angiofibroma (JNF) is a rare vascular benign tumour predominant in male adolescents and pre-adolescents. In spite of several origin sites reported, nasopharynx in the region of the sphenopalatine foramen and pterygopalatine fossa remains most common.1 Nevertheless, sporadic description of extra nasopharyngeal angiofibromas (ENAF) are also rarely evident.2 Literature documents maxillary sinus as the most favourable site for ENAF followed by the ethmoid sinus, nasal cavity, nasal septum, larynx, sphenoid sinus, cheek, conjunctiva, oropharynx, retromolar area and others.3 However, ENAF of mandibular ramus marks rarity and no case has been reported with respect to this anatomic location especially in preschool children yet. Hence, a rare ENAF in a 3-year-old child, principally confined to mandible, with neither sphenopalatine foramen nor nasopharynx involvement presenting with swelling is described.
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