<prompt> A patient gives history of recurrent episodes of pain and swelling in Mandibular posterior region.He is diagnosed to have pericoronitis.The partially erupted 3rd molar was vital.On radiographical examination a well defined radiolucency was found with distal aspect of the respected tooth. What could be the daignosis:Dentigerous cyst.Paradental cyst.Eruption cyst.Periapical cyst.  <response>: Paradental CystAka:Baccal bifurcation CystCraigs cystCollateral cystMandi 3rd molar Association.Associated with VITAL TOOTH and recurrent pericoronitis DISTAL Aspect of mandi 3rd molar 