Capturing Centric Relation (CR)

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Centric Relation (CR) Recording:

Accurate CR is critical for the occlusion.

You MUST use one of the following methods for CR recording.
  1. Intraoral Gothing Arch Tracing
  2. Simplified Tracing
  3. Direct Check Bite

We highly recommend utilizing the Gothic Arch Tracing method for the most accurate and best result.

You MUST create a dimple for the center pin to lock into before bite registration capture.

Impressions without CR dimple will not be processed and will be returned for a new CR bite.

Preparing for CR Capture:

1. After the Maxillary and Mandibular impression has been taken, cut through the impressions and remove the posteriors.

Attach center pin to lower tray.

2. Apply tracing material (i.e. Pala Tracer) (marker or Occlude) to maxillary tray.

Find CR. Drill a dimple at CR point.

3. Remember: Seat the lower tray firmly with fingers while capturing bite.

Drill a dimple at the CR position with a bur. The center pin in the lower tray will slide into this dimple in the patient's mouth. Slippage or incomplete seating of the lower tray is the most frequent error. Dimple will prevent any slippage during bite registration.

Three Methods for CR Capture:

1. Intraoral Gothic Arch Tracing*:

CR is located when the patient's mandible is in the most posterior, center position.

  1. Apply Occlude or permanent marker to the flat surface on the maxillary tray.
  2. Seat both trays in the mouth and guide the patient's jaw backwards and forwards over 5 times to trace a line from the anterior to the most posterior center position. The tracing pin (attached to the lower tray) should trace lines on the flat surface.

The tip of this arrow is your CR point.

*Recommended
2. Simplified Tracing:

If gothic arch tracing is not possible due to the patient's limit, use the simplified tracing method.

  1. Apply Occlude or permanent marker to the flat surface of the maxillary tray.
  2. Seat both trays in the mouth and guide the patient's jaw backwards and forwards over 5 times to trace a line from the anterior to the most posterior center position. The tracing pin (attached to the lower tray) should trace lines on the flat surface.

The most posterior point among all lines traced is your CR point.

C. Direct Check Bite:

If A or B is not possible, use the Direct Check Bite method to find the CR:

  1. Apply lipstick on the top of the center pin.
  2. Seat both trays in the mouth and guide the patient's lower jaw backwards to its most posterior position with your hand(s). Have the patient bite down several times in CR (in most posterior position).

The most posterior point of all the markings is your CR point.

* Please note pricing may be subject to change due to laboratory pricing. If you have questions on pricing, please consult with your laboratory partner.
Kulzer