Parallel Technique Dental X-Ray

The video introduces the XCP kit for taking full mouth X-rays (FMX) and begins by demonstrating the assembly of the yellow set, which is used for posterior periapical images. This involves connecting the yellow basket (film holder) to the yellow bar, ensuring it's inserted into the closest holes to the film. The yellow ring is then slid onto the bar until the film holder is fully visible through the ring. A common mistake of incorrect ring orientation is shown, emphasizing the importance of proper alignment for an accurate shot.

Next, the video demonstrates the assembly of the blue XCP set, used for anterior X-rays. The blue basket, ring, and bar with blue notations are assembled. The bar should 'snake up and raise,' and the basket should also raise when inserted, creating an increasing incline. The ring is positioned so that everything points upwards, ensuring the basket is visible through the hole. This setup is straightforward and doesn't require rotation for different areas once assembled.

The crucial aspect of film placement is explained. The film has a white side with a raised dot (pimple) and a flat side that goes towards the tongue. The 'pimple' side must always face the teeth. For posterior X-rays with the yellow set, the film is inserted horizontally into the slotted area of the holder, centered within the ring. For anterior X-rays with the blue set, the film is inserted vertically, with the dotted side also facing the slotted area.

The video then moves to intraoral placement, starting with the upper right posterior. It highlights a common issue where the bar obstructs placement due to the cheek. To correct this, the bar is flipped to the opposite side, and the ring is reoriented to ensure proper alignment. The film is positioned for molars, using the biting surface as an indicator, and for premolars, adjusting the position to include both the molar and premolar teeth. The PID (Position Indicating Device) is then aligned parallel to the ring and shot.

For anterior teeth, the blue set is used, with the film placed vertically. A cotton roll is highly recommended to prevent cutting off the incisal edges of the crowns. For canine shots, the tooth should be centered on the biting tab. To ensure the full crown is captured, the patient slightly opens their mouth to allow a cotton roll to be inserted, slightly lifting the X-ray apparatus. For central incisor shots, the film is centered between the two central incisors, again using a cotton roll for elevation.

For mandibular teeth, similar principles apply, but it's crucial to check for tori on the lingual side to avoid patient discomfort. The bar orientation needs to be adjusted so it doesn't interfere with the cheek. For molars, the film is placed on the molar. For premolars, it covers one premolar. For mandibular anteriors, the blue set is used, and a cotton roll is again utilized to ensure the full crown is captured, preventing the incisal edges from being cut off. The PID is always aimed between contacts to ensure proper imaging.

The video briefly mentions the red bitewing kit but explains that bitewing tabs are typically sufficient for good results, especially with films. However, if using the red XCP set, it would function similarly to bitewing tabs, with the film centered and the patient biting down on the tab to align for molar or premolar views.