The effect of surface conditioning techniques on the shear bond strength of zirconia-reinforced lithium silicate ceramic following adhesive cementation - An study.

Aim: The aim of this study was to determine the effect of different surface conditioning techniques on the bond strength between zirconia-reinforced lithium silicate (ZLS) ceramics and resin cement.

Materials And Methods: Fifty samples of ZLS ceramic were used and allotted into five groups with 10 samples per group based on the type of surface conditioning technique. The ceramic specimens were crystallized and embedded into acrylic resin.

Implication of photic sneeze reflex in ophthalmology.

Background: Photic sneeze reflex (PSR) also known as autosomal dominant compelling helioophthalmic outburst is a rare condition characterized by uncontrolled sneezing in response to bright light. The exact mechanism causing this is poorly understood. However, various hypotheses have been proposed.

Comparative Evaluation of Fracture Resistance of Endodontically Treated Bicuspids Instrumented With Hand Files, TruNatomy, ProTaper Next, ProTaper Gold, and WaveOne - An Study.

Aim: The study aims to compare and evaluate the fracture resistance of endodontically treated bicuspids instrumented with Hand Files, TruNatomy (TRN), ProTaper Next (PTN), ProTaper Gold (PTG), and WaveOne (WO).

Materials And Methods: In total, 45 extracted single-rooted human premolar teeth were selected and sectioned at or below the cementoenamel junction to obtain roots 15 mm long. The samples were divided into four experimental groups and one control group ( = 9): instrumentation with nickel-titanium (NiTi) Hand Files (control group), instrumentation with TRN files, instrumentation with PTN files, instrumentation with PTG files, and instrumentation with WO files.

Comparative evaluation of shear bond strength of a bioactive material to composite resin using three different universal bonding agents: An study.

Background: Calcium silicate-based cements or bioceramics have revolutionized and simplified pulp-capping procedures due to its versatility and accessibility.

Aim: This study aimed to assess the shear bond strength (SBS) of a bioceramic material to composite resin at two aging periods and with three universal adhesives.

Materials And Methods: Forty-eight samples of Biodentine with a height of 2 mm and internal diameter of 4 mm were prepared.

The effects of recasting on the cytotoxicity of dental base metal casting alloys.

Aim And Objectives: In dentistry, base metal casting alloys are extensively used for the fabrication of inlays, onlays, crowns, bridges, partial dentures, etc. During the casting of these alloys, excess amount of material used than needed will be collected as sprue buttons at the end, which is either added to the fresh alloy during casting and reused or disposed of.

Materials And Methods: The aim of the present experimental study was to investigate the effect of the complete recasting of four commercially available cobalt-chromium (Co-Cr) and nickel-chromium (Ni-Cr) base metal casting alloys on their cytotoxicity.

Effect of Biomineralization Ability on Push-out Strength of Proroot Mineral Trioxide Aggregate, Mineral Trioxide Aggregate Branco, and Calcium Phosphate Cement on Dentin: An Evaluation.

Context: Biomineralization is a process which leads to the formation of an interfacial layer with tag-like structures at the cement-dentin interface. It is due to interaction of mineral trioxide aggregate (MTA) and Portland cement with dentin in phosphate-buffered solution (PBS). This study is aimed to evaluate the effect of influence of biomineralization process on push-out bond strength of ProRoot MTA (Dentsply Tulsa Dental, Tulsa, OK, USA), MTA Branco (Angelus Soluc¸o˜es Odontolo´gicas, Londrina, PR, Brazil) and calcium phosphate cement (BioGraft CPC).

Effect of bleaching agents having a neutral pH on the surface of mineral trioxide aggregate using electron microscopy and energy dispersive X-ray microanalysis.

Aim: To investigate the effect of bleaching agents having a neutral pH on the surface of mineral trioxide aggregate (MTA) used as a coronal seal material for nonvital bleaching, beneath the bleaching agent, with the help of energy dispersive X-ray microanalysis and scanning electron microscopy (SEM).

Materials And Methods: Six samples of plastic tubes filled with white MTA (Angelus white) were kept in 100% humidity for 21 days. Each sample was divided into 2 and made into 12 samples.

The efficiency of 2.5% sodium hypochlorite in preventing inoculation of periapical tissues with contaminated patency files: An ex vivo evaluation.

The purpose of this in vitro study was to analyze the effectiveness of 2.5% sodium hypochlorite (NaOCl) in preventing inoculation of periapical tissue with contaminated patency files. Fifty single-rooted teeth with single canals were used in the study.

Human Papilloma Virus Associated Squamous Cell Carcinoma of the Head and Neck.

Oral cancer is one of the commonest causes for mortality and morbidity with squamous cell carcinoma being the sixth most frequent malignant tumour worldwide. In addition to tobacco and alcohol, human papilloma virus (HPV) is associated with a proportion of head and neck cancers. As in cervical cancers, HPV types 16 and 18 are the cause of malignant transformation.

Levels of Serum Calcium and Magnesium in Pre-eclamptic and Normal Pregnancy: A Study from Coastal India.

Background: Pre-eclampsia is one of the major causes of maternal and fetal morbidity and mortality. Though the aetiology is obscure, recent studies indicate that serum levels of calcium and magnesium may have a role in pre-eclampsia.

Aim: The aim of this study was to find out the relationship of serum levels of calcium and magnesium in pre-eclamptic pregnancies compared to normal pregnancies in women from southern coastal India.

Comparative evaluation of antibacterial activity of total-etch and self-etch adhesive systems: An ex vitro study.

Aim: The aim of this ex vivo study was to compare the antibacterial activity of total-etch and self-etch adhesive systems against Streptococcus mutans, Lactobacillus acidophilus, and Actinomyces viscosus through disk diffusion method.

Materials And Methods: The antibacterial effects of Single Bond (SB) and Adper Prompt (AP) and aqueous solution of chlorhexidine 0.2% (positive control) were tested against standard strain of S.

Sudden neuropathological deaths: An autopsy study.

Background: Sudden or unexpected death can occur from unnatural causes, such as violence or poisoning, as well as from natural causes. Second to cardiac causes, neuropathology is one of the main causes of sudden natural death. In spite of the increasing incidence of neuropathological deaths, few studies have been conducted in Asia - hence the reason for the present study.

Death due to coronary artery insufficiency following blunt trauma to the chest.

There have been numerous reports of sudden cardiac death following blunt trauma to the chest, but there is lack of such references in forensic literature. It is the court of law which makes decision about trauma precipitating natural events. The forensic pathologist is scientifically trained in the medical field and would be in a better position to give clear picture about the victim's general status at the time of death, exact nature and severity of the illness he is suffering from if any.

Ovarian Gonadoblastoma with Dysgerminoma in a Young Girl with 46, XX Karyotype: A Case Report.

Gonadoblastoma is a rare gonadal tumour consisting of a mixture of germ cells and sex cord stromal derivatives resembling immature granulosa and Sertoli cells. It usually arises in various types of gonadal dysgenesis containing Y chromosome like pure or mixed gonadal dysgenesis. Occurrence in phenotypically and chromosomally normal women is very rare.

Sealing ability of white and gray mineral trioxide aggregate mixed with distilled water and 0.12% chlorhexidine gluconate as a root end filling material: an ex vivo evaluation.

Aim: The aim of this study was to evaluate the sealing ability of white and gray mineral trioxide aggregate (MTA) mixed with distilled water and 0.12% chlorhexidine (CHX) gluconate when used as a root-end filling material using the dye-penetration technique.

Materials And Methods: A total of 48 single-rooted human teeth were cleaned, shaped, and obturated with gutta-percha and AH Plus sealer.

Coronal microleakage with five different temporary restorative materials following walking bleach technique: An ex-vivo study.

Context: Walking bleach technique uses 30% hydrogen peroxide and sodium perborate, and this paste mixture causes loosening of the coronal temporary restorative materials and thus decreasing its clinical effectiveness and causing irritation to the patients oral tissues. In the present study, sealing ability of hygroscopic coronal temporary restorative materials were compared with the other commonly used temporary restorative materials.

Aim: To evaluate the effects of walking bleach material on the marginal sealing ability and coronal microleakage of the hydrophilic temporary restorative materials with that of the other commonly used temporary restorative materials in endodontic practice.

Diagnostic value of acetic acid comparing with conventional Pap smear in the detection of colposcopic biopsy-proved CIN.

Aim: To assess the role of visual inspection with acetic acid as an alternative to Pap smear and in screening program for cervical cancer in low resource settings.

Materials And Methods: A total of 225 women in the reproductive age group attending the Department of Gynecology were enrolled in the study. A Papanicolaou smear and visual inspection of the cervix with acetic acid was done.