Acry Plus NM - Technique of use

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Mounting features

For the mounting to respect the neuromuscular features, no special techniques are required, just certain clever devices that distinguish Acry Plus NM in these gnathologic concepts.

Neuromuscular gnathology concepts do not impose the use of articular instruments, rather those devices that allow repeating the maximum intercusping. Therefore using instruments with either Camper's plane or Villain's cap, Acry Plus NM always creates the right compensation curves.

The front teeth are positioned with respect to the previously formed rims, in form and based on the phonetic and myocentric tests. It is essential that the right ratio is obtained of the perpendicular axis of the lower canine tooth with the passing line for the interproximate contact point between the canine and side upper.

When the instruments with Camper's plane are used, to get the right compensation curves, Acry Plus NM must come into contact with the plane with well-defined cusps:

Positioning the 4th upper (14 or 24): contact of the vestibular cusp.

Positioning the 5th upper (15 or 25): contact between the vestibular cusp and the palatal cusp.

Positioning the 6th upper (16 or 26): contact between the mesiopalatal cusp and the mesiovestibular cusp. The distal-palatal cusp and distal-vestibular cusps will automatically remain slightly away from the plane, to give the right compensation curve ratio.

Positioning the 7th upper (17 or 27): will follow the curve of the sixth (16 or 26) and remain detached from the plane.

When the upper semi-arches are complete, the bottom arches can be positioned:

Positioning the 6th lower (36-46): contact between the triangular ridges of the mesiolingual and distal-lingual cusps and the ridge of the central-vestibular cusp with the mesiopalatal cusp of the upper.

Positioning the 5th (35-45): contact between the distal fossa and the palatal cusp of the upper.

Positioning the 4th (34-44): contact on the distal side of the vestibular
cusp with its own antagonist.

Positioning the 7th (37-47): contact between the triangular ridges of the mesiolingual cusps and distal-lingual cusps with at least one ridge of the two vestibular cusps.

When using instruments with Villain's cap, the diatonic teeth are assembled beginning with the lower teeth.

When doing this, the greatest number of contacts between Acry Plus NM and the cap should be obtained to give the right compensation curve ratio.

Positioning the 4th (34-44): contact between the vestibular cusp.

Positioning the 5th (35-45): contact between the lingual and vestibular cusps.

Positioning the 6th lower (36-46): contact between the lingual cusps and at least the mesiovestibular cusp.

Positioning the 7th (37-47): contact between the mesiolingual, distal-lingual cusps and at least the mesiovestibular cusp.

The upper teeth will then be mounted beginning with the 6th and following the articulation of the antagonists listed above.

Practical cases

Set up on articulator with cap

Set up on plane

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