2016年6月1日 · Statistical evaluation exhibited significant differences of tongue shadow at all measuring sites between study and control group (P < .0001). The present study demonstrates that the TRM leads to a substantial reduction of the tongue position error in …

The radiolucent area between the dorsum of the tongue and the hard palate is the palatoglossal air space, which is more pronounced. Another error that is visible in Figure 11 is that the chin position is too low causing the spine to be more pronounced on the image.

2012年2月29日 · The largest intraoral shadow is created by the tongue, whose dome-shaped image occupies a large proportion of the panoramic radiograph . In the posterior parts of the radiograph, the posterior region of the tongue may have a more irregular surface due to the lingual tonsils ( Fig. 3d ).

Tongue: Instruct the patient to place their ENTIRE tongue on the hard palate and leave it there for the duration of the exposure. Lips: Instruct patient to keep their lips together for the duration of the exposure. Eye: Have patient close their eyes if they feel they might become dizzy due to the movement of the tube head.

The most common error observed was the failure to position the tongue against the palate (55.7%) and the least commonly experienced error was patient movement during exposure (1.6%). Only 11% of the radiographs were excellent, 64.1% were diagnostically acceptable, and 24.9% were unacceptable.

Panoramic radiograph (schematic on right) showing the effect of not placing the tongue on the roof of the mouth on the image. While failure to position the tongue on the roof of the mouth is one of the most common technique errors, it is rarely the cause for a re-take.

The patient undergoes changes in the positioning of the tongue on the floor of the mouth, a decrease in the tone of the muscles of the face that lead to maxillary hypoplasia and reduced growth of...

2024年2月7日 · Due to the failure of holding the tongue against the palate, the palatoglossal airspace (PGA) appears in panoramic radiographs as a dark radiolucent band under the hard palate and on the apices of the anterior maxillary teeth. 27, 28 This artefact significantly reduces the quality of the panoramic radiograph as it may be difficult or impossible ...

Patients with intellectual disabilities often fail to follow traditional tongue position instructions for panoramic radiographs resulting in missed pathology or unnecessary further radiation. This simple breathing technique is a new clinical instruction method for panoramic radiography developed to reduce the most common patient position error ...

Objective: The purpose of this study was to evaluate the use of the tongue repositioning maneuver (TRM) during panoramic radiography so as to avoid the error of tongue shadow. Study design: A total of 300 panoramic radiographs were evaluated. One hundred and fifty orthopantomograms with conventional positioning technique were used as a control ...