Background: This study has conducted for compare the adaptation of resin-based sealants with that of Resin modified glass ionome-based sealants in various tooth fissure morphologies. Methods: It”s an in vitro experimental study done at department of dentistry, Government Medical College & Hospital, Bettiah (Bihar). Ten extracted human molars were randomly assigned for two groups, (n=5) each. Fissure sealant material (Resin based sealant or resin modified glass ionomer-based sealant) has applied on the occlusal surface of the tooth according to manufacturer’s recommendations. Specimens were thermocycled and then sectioned into three longitudinal parts in the bucco– lingual direction. Specimens were examined using scanning electron microscope for the adaptation of the sealant in the occlusal fissure. Mann-Whitney –U test and Kruskall-Wallis test were applied to compare the adaptability scores of sealant materials in the tooth fissure. Level of significance was kept at 0.05.Results: There was no significant difference in the adaptability scores among U-shaped (p-value=0.35), V-shaped (p-value=0.89), IK-shaped (p-value=0.52), I-shaped (p-value-=0.41) and Y-shaped (p-value=1.00) fissure patterns. Similarly, there were no significant differences observed between the resin-based sealant (p-value=0.95) versus RMGIC based sealant (p-value=0.63) for the adaptability scores in various tooth fissure morphologies. Conclusions: No significant difference was found between resin-based sealants and resin modified glass ionomer-based sealants for the adaptation in various tooth fissure patterns.

After the detection of 1st few cases of SARS COV-2 in Wuhan city in China in late 2019 little did we know that it will have such a gripping effect all over the globe. Health care workers were challenged in giving optimum services to the patients infected with Covid-19 and at the same time prevent cross infections. Since the spread has been rampant through nasopharyngeal and salivary secretions providing dental care to on going patients or emergency cases, had to meet with changes in routine standard operating procedures. How dentistry tried to combat the new changes by modifying regular practice will be discussed in this article.

Radiological investigations are fundamental in the diagnostic processes of bone lesions. In the pathologies of the jaws, this type of investigation can be useful in predicting a systemic pathology and anticipating its clinical diagnosis, so it is possible to intervene on the manifestations with an adequate treatment plan for the patients, improving their quality of life.