Setting time of Dental Materials : Alginate setting time, GIC, ZOE, Impression plaster and Zinc Phosphate Setting Time

The Setting time of some of the dental materials is listed in the table below.

Material	Setting time
Fast setting alginates	1-2 minutes
Normal setting alginates	2.5 - 4 minutes
Alginate (Optimal)	3-4 minutes
Impression plaster	4 minutes

MCQs on Tooth Extraction (Exodontia) and Impactions

# All of the following statements about inhaled tooth fragment are true except:
A. It usually enters in the right bronchus
B. It may cause lung abscess
C. It may cause bronchiectasis
D. It will be coughed out spontaneously, no treatment is necessary

# Rotatory movement is used for the extraction of the :
A. Mandibular canine
B. Maxillary central incisor
C. Maxillary lateral incisor
D. All of the above

Important Signs in Clinical Medicine and their Significance : Murphy's Sign, Auspitz's sign, Trousseau's Sign, etc.

Important Signs and their significance

Sign	Significance
Nikolsky's sign	➤ Seen in Pemphigus, familial benign chronic pemphigus and recessive form of epidermolysis bullosa ➤ Loss of epithelium due to rubbing resulting in raw, sensitive surface
Auspitz's sign	➤ Seen in Psoriasis ➤ If the deep scales are removed, one or more tiny bleeding points are disclosed

Treatment of Acute Necrotising Ulcerative Gingivitis (ANUG)

Treatment of ANUG

First Visit	➥Removal of pseudomembrane and non attached debris after the application of a topical anesthetic ➥Patient is advised to rinse with 3% H2O2 (hydrogen peroxide) in equal dilution with warm water every two hours ➥Patients with systemic symptoms and local lymphadenopathy are placed on Amoxicillin 250 or 500 mg QID and Metronidazole 250 or 500 mg TID