Objectives. The main purpose of the study was to assess the material wear, antagonistic natural primary teeth wear, and microhardness of zirconia (ZR), a recently launched novel glass-fiber-reinforced composite crown (GFRC). The research question was, are these aesthetic crowns resulting in antagonistic natural primary tooth wear and the crown material itself? Methods. Forty-five primary canines were divided into three groups (15 per group) and mounted against Zr (Group A), GFRC (Group B), and natural teeth as control (Group C) in the wear test machine. All samples were assessed for surface wear with pre- and post-3-dimensional scanning. In addition, microhardness was assessed for all three groups. Results. The mean microhardness value for the Zr disc was 1157 ± 7 HV; for the GFRC disc, it was 29.35 ± 2 HV; while with natural teeth, it was 105 ± 4 HV. There was a statistically significant difference in teeth wear in the prescan and postscan in the natural tooth ( p < 0.05 ) group, highly significant difference ( p < 0.001 ) in the ZR group, and no significant difference in the GFRC group. Conclusion. There is more significant wear loss of glass-fiber-reinforced composite discs as compared to zirconia. In addition, the wear of the antagonistic tooth with zirconia and natural teeth is more remarkable than with GFRC. There is a vast difference of microhardness between natural teeth and zirconia (almost 10 times higher) which suggests further scope of study. Clinical Relevance. Pediatric dentistry deals with the transition of dentition from primary to permanent through mixed dentition. Selection of restorative material needs to be done cautiously when we are dealing with primary teeth and young permanent teeth as antagonistic teeth. Wear of the crown material itself and opposing natural teeth are essential factors that should be considered in selecting crowns in clinical practice. The present study results can be extrapolated to clinical practice, and the practitioner can consider various factors in selecting full-coverage crowns for primary teeth. The vast difference in aesthetic crowns and natural teeth microhardness indicates a further need for research. Additionally, there is no literature published for the recently launched GFRCs.

Endotracheal tube (ETT) damage during head and neck surgeries is an uncommon complication needing quick corrective action to avoid hypoxia and aspiration of blood into lungs. Our case illustrates an unanticipated complication created during partial maxillectomy by a reciprocating motor saw. Accidental near-total transection of ETT was successfully managed by a novel technique of reintubation guided by an airway exchange catheter placed alongside the damaged ETT.

Background: Myelomeningocele (MMC) is a severe manifestation of spina bifida. Children with MMC have motor disability, hydrocephalus, skeletal abnormalities, and mental retardation. These individuals are more susceptible to caries due to poor oral hygiene, carbohydrate-rich diet, prolonged use of sugarcontaining medications and limited motor abilities. Latex allergy is an important factor to be considered during the dental rehabilitation of such patients.Case Report: A 3-year-old girl visited the dental clinic with the chief complaint of multiple carious teeth and H/o neural tube defect (NTD) which had been operated on at the age of 6 weeks. On dental examination, multiple dental abscesses and severe early childhood caries were noted. Radiographic evaluation revealed internal root resorption of tooth "K" and external root resorption of tooth "T." The two teeth were treated with ledermix paste followed by obturation with Vitapex

In this paper, a detailed overview on steganography & its Types, tools, techniques is conducted to study and look over them. This research involves the steganography using binwalk tool in the Necromancer. Necromancer is the vulnerable virtual machine, in order to gain the root access of VM (Virtual Machine) there are 11 flags to collect on the way, Few flags are found by using the Binwalk tool, to know the hint behind image, so we have used an Image steganography in one of flag of Necromancer. Flags are nothing but any encrypted code. Steganography refers to the act of camouflage the secret data within any image, audio, video in order to avoid the detection. The secret data is then extracted at its destination. The use of steganography are often combined with encryption as an additional step for hiding or protecting data.