Dentosphere : World of Dentistry

According to Contemporary Oral and Maxillofacial Surgery, 6th Edition, the PRINCIPLES OF THERAPY OF ODONTOGENIC INFECTIONS are: Principle 1: Determine Severity of Infection Principle 2: Evaluate State of Patient’s Host Defense Mechanisms Compromised Host Defense States: Uncontrolled Metabolic Diseases • Poorly controlled diabetes • Alcoholism • Malnutrition • End-stage renal disease Immune System–Suppressing Diseases • Human immunodeficiency virus/acquired immunodeficiency syndrome • Lymphomas and leukemias • Other malignancies • Congenital and acquired immunologic diseases Immunosuppressive Therapies • Cancer chemotherapy • Corticosteroids • Organ transplantation Principle 3: Determine Whether Patient Should Be Treated by General Dentist or Oral-Maxillofacial Surgeon Criteria for Referral to an Oral-Maxillofacial Surgeon • Difficulty breathing • Difficulty swallowing • Dehydration • Moderate to severe trismus (interincisal opening less than 20 mm) • Swelling ext...

Most Common Causes of Some Conditions: 1. The most common cause of adrenal insufficiency is chronic therapeutic corticosteroid administration (secondary adrenal insufficiency). 2. The most common cause of a transient loss of consciousness in the dental office is vasovagal syncope. 3. During normal development, the lower third molar begins in a horizontal angulation, and as the tooth develops and the jaw grows, the angulation changes from horizontal to mesioangular to vertical. Failure of rotation from the mesioangular to the vertical direction is the most common cause of lower third molars becoming impacted . 4. A complication that every dentist believes can never happen—but happens surprisingly often—is extraction of the wrong tooth . This is usually the most common cause of malpractice lawsuits against dentists . 5. The most common cause of delayed wound healing is infection . Infections are a rare complication after routine dental extraction and are primarily seen af...

# Which of the following materials cannot be used as a base under composite restorations? A. Zinc Phosphate B. Zinc Polycarboxylate C. Zinc Oxide Eugenol D. Glass Ionomer Cement Answer: C. Zinc Oxide Eugenol. Reason: Residual free eugenol interferes with the proper setting of resin-based composites or resin cements. Therefore, various types of carboxylic acids have been used to replace eugenol and produce a ZOE-like material. These products are called zinc oxide-non eugenol cements. Reference: Phillip's Science of Dental Materials, 12th Edition, Page No. 331 CLICK HERE TO VIEW  ALL MCQS

# Which of the following materials could be used for cementing a bridge as well as restoring a cervical lesion? A. Glass Ionomer cement B. Zinc Polycarboxylate C. Zinc Phosphate D. Zinc Oxide Eugenol Answer: Correct Answer is: A. Glass Ionomer Cement Only glass ionomer is used as a cement (luting agent) and a permanent restorative material. Glass ionomer cement is often used for root surface carious lesions because of the potential advantage of fluoride release in helping to control the spread of caries. CLICK HERE TO VIEW  ALL MCQS

# Gutta Percha is plasticized / softened by: A. Alcohol B. Chloroform C. Eugenol D. EDTA Ans: Reference: Grossman's Endodontic Practice, 13th Edition Page no. 366 Correct answer is B. Chloroform Gutta Percha can be plasticized by chemical solvents such as Chloroform, Eucalyptol, or xylol  which enables the gutta percha to flow into small and curved wavy canals.  CLICK HERE TO VIEW  ALL MCQS

# The Largest Component of Gutta Percha Cones is: A. Gutta Percha B. Zinc Oxide C. Resins and Waxes D. Coloring Agents

Most Dentists and Dental Students assume that dental extraction is a relatively easy procedure which takes less time to perform and they need not charge much for extractions because all you need is few milliliters of Local anesthetic, a pair of gloves and some reusable instruments which need to be autoclaved. So, in the fear that their competitor could charge less for the dental extraction and acquire more customers because we all have realized that Nepal, India, and Asia in general, is a price-sensitive economy, dentists prefer to charge less than they actually should have charged for dental extractions. Non - Asian dental patients are price sensitive too because dental treatment is something the general public has envisioned as a costly treatment. But, it is to be noted that  Dentists  in Asia are actually charging very less for dental extractions as well as other dental treatments and they should charge many times higher for the treatment than they are currently charging. ...