Showing posts from September, 2012

Comparison of short term effectiveness of four different tooth whitening systems.

By Faraj A. Behbehani, Jaber Akbar, Yacoub Altarakemah, Prem Sharma

Abstract: Statement of the Problem : Dental practitioners are faced with many materials and methods commercially available for tooth whitening. This study aims to compare the short term effectiveness and major side effects of 4 popular bleaching systems in a relatively large sample. Materials and Methods: A sample of 300 subjects were divided equally into 4 groups and treated with ( home bleaching - Opalescence 20%, in office – Bright Smile, in office - Zoom, and in office - Zoom plus home bleaching - Day White 9.5%). Results: The four whitening systems were significantly effective at 3 days (T1) and 3 months (T2) after the whitening treatment. At T2, there was no significant difference in whitening effectiveness among the four whitening systems. Tooth sensitivity and gingival irritation were associated with the 4 whitening systems. Conclusion: The bleaching procedures tested i…

Gastro esophageal Reflux Disease (GERD) and Tooth Erosion; Statistical study of 100 cases

By Dr. Ines kallel


 Dental erosion was defined as dissolution of tooth by a solution that is low in pH either after the consumption of extrinsic acidic fluids or when gastric fluids come into the oral cavity. Gastro esophageal reflux (GERD) is a condition defined as an involuntary passage of gastric juice against the normal flow of digestive tract. It can be abnormal phenomena on in newborns and usually disappears with age; however, in some individuals, its maintenance can be considered a pathological condition. (1)

The association between acid reflux and dental erosion was first described by Howden in 1971 and was confirmed in other studies later, both in the adult population and in children. (2, 9, 23)

This association is commonly observed by dentists, but is given very cursory mention or omitted entirely when describing extra esophageal (supra-esophageal) manifestations of GERD. (3)

A recent systematic review found a median prevalence of 24…

How Prepared Are You for a Medical Emergency?

Dr. Catharine Goodson

"One day you will wake up and there won't be any more time to do the things you've always wanted. Do it now…"
— Paulo Coelho

In March 2011 what was supposed to be a routine wisdom tooth extraction on a 17-year-old girl from Woodstock, Maryland, went horribly wrong. Jenny Olenick had been given the standard dose of anesthesia, but it didn’t sedate her adequately. The anesthesiologist administered more, and the procedure began. Then Jenny began experiencing bradycardia, or a slowing heart rate, and the oxygen saturation in her blood started dropping. Soon she went into hypoxic arrest.
Emergency responders were called and restored Jenny’s pulse within four minutes of their arrival, but the damage had been done. Jenny was rushed to the hospital, where she died after being in a coma for a week. The autopsy showed that Jenny had brain edema and acute hypoxic-ischemic encephalopathy due to lac…