![Close up of a patient with a mouth 'gag'. The mouth 'gag' is used during endoscopic treatment, Foto de Stock, Imagen Derechos Protegidos Pic. MDC-SD071-001-01301 | agefotostock Close up of a patient with a mouth 'gag'. The mouth 'gag' is used during endoscopic treatment, Foto de Stock, Imagen Derechos Protegidos Pic. MDC-SD071-001-01301 | agefotostock](https://previews.agefotostock.com/previewimage/medibigoff/2e6e25fbfea0e0ba8dee231208de85f5/mdc-sd071-001-01301.jpg)
Close up of a patient with a mouth 'gag'. The mouth 'gag' is used during endoscopic treatment, Foto de Stock, Imagen Derechos Protegidos Pic. MDC-SD071-001-01301 | agefotostock
![Protecting teeth and gums during rigid endoscopy of the upper aerodigestive tract: Our experience with a disposable, mouldable and rigid thermoplastic mouthguard Protecting teeth and gums during rigid endoscopy of the upper aerodigestive tract: Our experience with a disposable, mouldable and rigid thermoplastic mouthguard](https://www.heighpubs.org/hor/figures/hor-aid1021-g004.png)
Protecting teeth and gums during rigid endoscopy of the upper aerodigestive tract: Our experience with a disposable, mouldable and rigid thermoplastic mouthguard
Center for Digestive Medicine - An upper GI endoscopy is a procedure to view the upper digestive tract, which includes the esophagus (the tube linking the mouth and stomach), stomach and beginning
![A patient lays on the table prior to endoscopic treatment, Foto de Stock, Imagen Derechos Protegidos Pic. MDC-SD071-001-01201 | agefotostock A patient lays on the table prior to endoscopic treatment, Foto de Stock, Imagen Derechos Protegidos Pic. MDC-SD071-001-01201 | agefotostock](https://previews.agefotostock.com/previewimage/medibigoff/89ad7ba98e4d2c536267f68b8722a389/mdc-sd071-001-01201.jpg)