Academy of Dental Knowledge

Odontogenic Keratocyst     Odontogenic keratocyst (OKC) is a parakeratin lined cyst like lesion within bone. OKCs mostly occur in the 2 nd and 3 rd decades of life; although can occur over a wide age range with male predilection. Odontogenic keratocyst comprises of 4 to 12 percent of all odontogenic cysts. Ninety percent of odontogenic keratocysts are solitary. Multiple cysts are found in Nevoid Basal Cell Carcinoma Syndrome / Gorlin Syndrome[1].   The most commonly involved body part in mandible, 65-85%; mostly posterior mandible. Normally, they are associated with third molars but may be present without associating with third molars; rarely occur in soft tissues. They are considered to arise from dental lamina.   Clinical Features   Odontogenic keratocysts are often asymptomatic. They are incidentally discovered on radiographs. They can cause symptomatic swelling. They can cause parasthesia of lip and teeth. Symptoms of pain and drainage are found if s...

The main criterion for the division of keratinized epithelia is the presence or absence of nuclei in the keratinized layer viewed under light microscope. In the orthokeratinized epithelium the cell nuclei disappear in the keratinized layer, whereas in the parakeratinized epithelium flattened, highly condensed nuclei remain in the cell cytoplasm of the keratinized layer until cells exfoliate.   Ref: https://www.sciencedirect.com/science/article/abs/pii/S0968432814001486#:~:text=In%20the%20orthokeratinized%20epithelium%20the,the%20keratinized%20layer%20until%20exfoliation.

 What is the INBDE? The Integrated National Board Dental Examination (INBDE) is the 500-item licensing exam administered by the American Dental Association (ADA) which allows graduate dental students to practice in the United States of America. The content of the INBDE is formulated by the Joint Commission on National Dental Examinations (JCNDE).

  Dental Crowns Crowns are a far more complex procedure than most people realise. To make a good quality crown, a dentist has to work in within a fraction of a millimetre. There is almost no margin for error. Getting the appearance correctly and communicating accurately with the dental lab can be an issue. Added to these, discussions about the balance between appearance and maintaining tooth tissue can be tricky. It can take a lot of painstaking adjustment at every step. Add in time pressure and any other added difficulties and it's a recipe for a stressed dentist, particularly if the dentist has recently graduated with limited experience.  A calm and supportive dental nurse can work slickly with the dentist and makes the entire procedure easier. The roles of a good dental nurse and efficient lab technician are vital to the success of crowns. Diagram showing transvers view of a tooth showing shape and thickness of a dental crown in pink colour. Planning for Making a Crown The ...

  Bacterial lesions causing ulcerative conditions in the oral cavity Syphilis Gonorrhoea Tuberculosis Leprosy Actinomycosis Noma For paid courses, a detailed description of the bacterial infection of the oral cavity is given HERE .