Dentosphere : World of Dentistry

# In Gillies Temporal approach for reduction of zygomatic arch fracture, Rowes elevator is placed between:   A. Superficial facia and temporal fascia   B. Temporal bone and temporalis muscle   C. Temporal fascia and Temporalis muscle D. Skin and superficial fascia The correct answer is C. Temporal Fascia and Temporal muscle.  In Gillies temporal fascia for reduction of zygomatic arch fracture, elevator is placed between temporal fascia and Temporalis muscle. The temporal fascia is attached to the zygomatic arch and the temporal muscle passes downward medial to the fascia to be attached to the coronoid process.Between these two structures a natural anatomical space exists into which an instrument can be inserted and it can be utilized to elevate the displaced zygoma on its arch into position. Technique: The hair is shaved from the temporal region of the scalp. The external auditory meatus is plugged with cotton to preve...

# Excess height of the posterior palatal seal of a complete maxillary denture will usually result in which of the following? A. Increased retention B. A tingling or tickling sensation C. Unseating of the denture D. Gagging The correct answer is C. Unseating of the denture. Over contouring or excessive beading of the posterior palatal seal causes too much pressure to be exerted on the palatal tissues resulting in the unseating of upper dentures.  The posterior palatal seal is typically placed approximately on the vibrating line between the hard and soft palate and provides a physiologically acceptable tissue pressure within the compressible portion of the soft palate to attain retention and peripheral seal.  Over extending the coverage of seal will cause gaggling and painful swallowing for the part of the patient.  CLICK HERE FOR MORE MCQS

# A denture that is fabricated with excessive Vertical Dimension of Occlusion (VDO) may result in: A. Inefficient mastication B. Perioral rhytides (wrinkles) C. Trauma to supporting soft tissue D. Sagging oral commissures The correct answer is C. Trauma to supporting soft tissue.  Perioral rhytides, sagging oral commisures and deep labiomental groove is an indication that the vertical dimension of occlusion is insufficient.  Excessive vertical dimension of occlusion (VDO) causes pain in the soft tissue under the denture because excessive force is created during occlusion.  Excessive VDO manifests as a "full mouth" as well as a difficulty pronouncing words.  CLICK HERE TO PRACTICE MORE MCQS

# Which of the following are most sensitive to X ray? A. Tooth buds and salivary glands B. Nerve and muscle tissue C. Hair and nails D. Cartilage The correct answer is A. Tooth buds and Salivary glands CLICK HERE TO PRACTICE MORE MCQS

# Which of the following is an example of non keratinized gingival tissue? A. Outer gingival epithelium  B. Gingival col C. Marginal gingiva  D. Attached gingiva The correct answer is B. Gingival col. The gingival tissue is made up of 75% Para keratinized epithelium, about 15 % keratinized and only 10% non keratinized epithelium. The keratinized area of the gingiva includes the attached gingiva and some portions of the outer gingival epithelium.  The para keratinized gingiva includes the marginal gingiva and portions of the outer gingival epithelium. The non keratinized portion of gingiva includes the gingival col, junctional epithelium and sulcular epithelium. CLICK HERE TO PRACTICE MORE MCQS

A 29 year old postnatal woman who had delivered a baby on 24th Baisakh 2077, at Institute of Medicine, Teaching Hospital, Maharajgnj and had been discharged on 25th Baisakh 2077 died due to complications arising due to Corona Virus Infection. When she developed symptoms like difficulty in breathing, she was brought to Dhulikhel Hospital for emergency treatment. This is the first official Case of COVID-19 in Nepal which took a life. The total number of infected people has reached 281. Nepal is on the 54th day of  a nationwide lockdown, since 12th Chaitra 2076.

# Main component of bacterial plaque: A. Bacteria and Food Product B. Bacteria and Bacterial products C. Food debris and salivary mucins D. Degenerating epithelial cells and salivary mucins # Inorganic component of plaque is formed of: A. Calcium and fluoride B. Calcium and sodium C. Calcium and Phosphorous D. Sodium and Calcium