ASSESSMENT OF THE CURVE OF SPEE ACCORDING TO THE BIO-ART’S BROADERICK FLAG
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ASSESSMENT OF THE CURVE OF SPEE ACCORDING TO THE BIO-ART’S BROADERICK FLAG Prof. Dr. Artemio Zanetti Prof. Dr. Pedro Paulo Feltrin Prof. Dr. Ricardo Inoue WARNING: The content of this article has been kindly provided by Dr. Rodolfo Auad for publishing on the website www.bioart.com.br, and he is the author and holder of the Copyright of the content of images and text content presented herein.

Anatomical molding of the upper arch using the Zanetti’s Technique. Simultaneously, we have obtained the mold of the teeths and the spacial position of the maxilla relative to the cranium. The use of the bite fork is eliminated. We have saved time and reduced distortions. Zanetti’s transfer tray individualized with utility wax Side view of the facial bow Right positioning of the Zanetti’s transfer tray Transfer tray loaded with irreversible hydrocolloid (alginate), brought to the mouth and kept in the position until its complete gelling. Then, with the patient's help, we couple the Facial...

The transfer tray, after casting with special plaster, is brought to the articulator to be mounted, the use of the support device is applicable, as it provides support to the transfer tray/model set during the plaster crystallization. Ancillary device for supporting the upper model Side view of the Zanetti’s transfer tray positioned in the articulator with support

The lower model is obtained in a conventional manner, that is, individualization of the transfer tray, loading with irreversible good-quality hydrocolloid, in the mouth until complete gelling, casting with special plaster and use of bubble wrap to promote retentions. Lower transfer tray individualized and mold. Bubble wrap on newly cast plaster to obtain retentions Final appearance of the retentions obtained using bubble wrap

For a study of this kind, it is convenient that the assembly in articulator be done in Centric Relation (RC), so we must promote the complete muscular deprogramming of the patient and record the position with a material that offers dimensional precision and stability, such as addition silicone shown in the figure. Patient with jaw closed in centric position View of the references obtained with addition silicon Bite Registration Cargo Side view of the mount in articulator of upper and lower models in position of Centric Relation

After the correct assembly of the models in articulator (Bio-Art articulator 4000-S), we couple another device, Bio-Art Flag, where, through the Flag Compass, we obtain the vertex (Crossing) of the two reference curves for the study of the Occlusal Plane. Bio-Art Broaderick Flag coupled to t the articulator Bio-Art Analyzer calibrated in 100 mm.

Based on the Monson’s Spherical Theory, we have calibrated our 10-cm Compass, which corresponds to the radius of the Moson’s Sphere. The first curve is obtained having the Condylar Sphere as the center (representing ther Joint Condyle). Bio-Art Analyzer positione in the center of the condylar sphere Obtaining the outline of va. the first curve.

The second curve is traced with reference to the tip of the canine. Bio-Art Analyzer positioned on the tip of the canine. From the intersection of these two curves we will have a vertex, where we place our compass, now in an inverted way, dry point is in the Flag and graphite tip is in the model.

After marking the models, we can assess the patient’s Curve of Spee. According to Steadman, situations like these can be found: Patient’s Curve of Spee coinciding with the curve obtained through the Flag. Acceptable curve according to Steadman. Patient’s Curve of Spee below the curve of the Flag. Excessive curve according to Steadman. . Patient’s Curve of Spee above the curve of the Flag. Plain or Absent curve according to Steadma

Conclusion: The Occlusion Plane study is essential to mouth rehabilitations, regardless its magnitude. Starting the job correctly is a guarantee of a good result, rebuilding and returning the function/aesthetics is a hard task and, if done in an empirical way, it will doomed to failure. Adjustments for wear or additions are necessary so that a correct arrangement of the teeth allow a fully physiological disocclusion. The use of the Flag helps us in obtaining this information, which is individualized for each patient, and allows a personalized and unique reconstruction.