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Difference between Preiapical, Lateral Radicular and Residual cysts

September 24, 2012 by Dr. Varun Pandula 3 Comments

Before we know the difference between Periapical, Radicular and Residual cysts, let us know what exactly a Cyst is – A Cyst is a “pathological fluid filled cavity lined by epithelium” . It consists of three parts – Wall or capsule, Epithelial lining and Lumen or Cavity. 

What is the Difference between Periapical, Radicular and Residual Cysts ?

Periapical Cyst:- Also known as Radicular cyst

These are the True cysts lined by Epithelium, present at the apex of Non Vital tooth which are stimulated by inflammation. It is defined as an Odontogenic Cyst derived from Cell Rests of Malassez that proliferate in response to inflammation. 

It is the most common type of Cyst seen in the oral cavity as it constitutes approximately half to three fourths of the cysts in oral cavity. The incidence of Periapical cyst in the Maxilla is 3 times as compared to Mandible. 

Symptoms: Asymptomatic in some cases as the cyst is slow in progression and pain is seen when the cyst gets infected and expansion is rapid after infection.  

Lateral Radicular Cyst:-

These are the radicular cysts which are present on the mesial or Distal aspects of the root mostly seen at the opening of lateral accessory root canals of offending tooth.

Residual Periapical Cyst:-

These are the radicular cysts which remains even after extraction of offending tooth. These are round to oval radiolucency of variable size within the alveolar ridge at the site of extracted tooth.

Differences between periapical lateral radicular and residual cyst


Comments

  1. Aishwarya says

    December 14, 2015 at 10:40 pm

    I have my oral surgery exam tomorrow. I just googled and came up with your blog.Its actually amazing and i know what to do after my exams… Read your entire blog. :)

  2. Varun says

    February 3, 2016 at 5:39 pm

    Really glad that it was helpful :)

  3. Cyril dime says

    February 19, 2018 at 12:03 pm

    thank you Dr.Varun for posting an article or blog about dentistry..its really a great help..especially those who are reviewing for exam..even to practicing dentist..awesome..thanks a lot..

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Varun Pandula

Varun Pandula

A Dentist by profession but a tech enthusiast by heart, trying to learn and enjoy both the professions.

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About Me

Hi I'm Varun, I'm currently a Dental Surgeon from India practicing from the past few years. I Started this Blog to help dental students as you can see from the name and also constantly try to keep updating information which can be useful for patients and Dental Practitioners as well. You can contact me here to for any Questions. Read More…

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