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TECHNICAL PROCEDURE
Year : 2016  |  Volume : 16  |  Issue : 3  |  Page : 311-314

Pneumatic impression: Improving dental arch impression with an inflatable balloon


Department of Prosthodontics and Crown and Bridge, Manipal College of Dental Sciences, Manipal University, Manipal, Karnataka, India

Correspondence Address:
Lokendra Gupta
Department of Prosthodontics and Crown and Bridge, Manipal College of Dental Sciences, Manipal University, Manipal - 576 104, Karnataka
India
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/0972-4052.186401

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Purpose: The purpose of this impression technique is to overcome the problem associated with restricted mouth opening in association with high arched palate by employing pneumatic impression technique using latex balloon. Methods: A stock tray was modified with auto polymerizing acrylic resin. On the modified tray, a latex balloon was attached with aid of cyanoacrylate. The outlet of the balloon was then connected to a clinical sphygmomanometer bulb with the rubber pipe for air passage which would aid in inflating the balloon. The prepared tray assembly was then equipped for recording the impression. An adequate amount of addition polysiloxane impression material, sufficient to cover the entire area of the balloon was loaded onto the tray. The balloon was then inflated with the help of a sphygmomanometer bulb which transferred the air only in one direction. On completion of setting time of the impression material, the air pressure was relieved by deflating of balloon which helped in the easy removal of the impression. The impression was subsequently removed from the oral cavity and disinfected. Conclusion: This novel technique was helpful for recording impression in patients presenting with restricted mouth opening and high arched palate.


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