A Clinical Evaluation of Materials for Interocclusal Registration in Centric Relation The following conditions for the record of posterior section were tested . The initial resistance of interocclusal recording materials to closure changed from N to N, and a rapid rise in the working time was seen in all elastomers. Statement of Problem: Interocclusal recording materials should have good dimensional stability for precise articulation. Purpose:The aim of this in vitro study.

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However, the accuracy of different interocclusal record materials to articulate digital models has yet to be evaluated. Accuracy and dimensional stability recoording four interocclusal recording materials.

Moreover, successful treatment is highly dependent on precise mounting of the casts tecording the articulator.

The samples were measured using an optical microscope with a micrometer provision. The cannulas’ entrances allowed adaptation of the tips of a handheld digital caliper Mitutoyo Digimatic Caliper, model ; Mitutoyo Corp, Tokyo, Japan used to measure the vertical distance between the predetermined upper and lower perforations Fig. Motion View Software was used to articulate the digital models by matching points from the models to the digitized interocclusal records.

The measurements were made at time intervals of 1, 24, 48 and 72 hrs. The distances between corresponding interarch markers were measured and compared with the measurements taken on the physical typodont gold standard. The following combinations of materials were compared for interocclusal records: On the other hand, when large interoccluzal spaces are present, specifically in posterior free end cases, cast mounting is considerably more complex 7.


An In Vitro Study G. Furthermore, the lack of teeth that articulate with their antagonists poses an additional difficulty to recording and increases the need for accurate transfer of the interocclusal relationship and vertical dimension 8. Rolls of 7 wax of uniform thickness were placed on the alveolar margin crest to create space for the alginate under the plate.

Bite registration material, dimensional stability, interocclusal records. Int J Prosthodont ; Properties of interocclusal registration material. Karthikeyan K, Annapurni H. A method of recording the interocclusal relationship of the teeth.

Small portions of alginate were placed above and below the resin plate. After the material jelled, the records were removed Fig. Clinical evaluation of the accuracy of interocclusal recording materials.

Comparison of five interocclusal recording materials.

A study of interocclusal record materials. In a second stage, the records were interposed between the casts and fixed with wooden rods and compound, so that the measurements could be made. An experimental study on particular physical properties of several interocclusal recording media. In cases of edentulous areas, the ZOE paste in combination with the register base tends to dislocate the underlying mucosa, resulting in articulator mounting with a slight materoals opening Based on the findings of this study, the following scale of fidelity can be settled from best to worst: A clinical evaluation of materials for interocclusal registration in centric relation.

Published by Elsevier Inc. The recording base should provide adequate fitting as well as rigidity and stability. I Group A 1 h Thus, intermaxillary recording plays an extremely important role in final results.

In this study, however, silicone presented the highest mean value of vertical separation between casts, although it did not differ significantly from the combinations of materials under study except for acrylic resin base plus wax.


Compression resistance of four interocclusal recording materials. A plastic typodont was modified with reference points for interarch measurements and articulated in maximum materiaks position on a semiadjustable hinge articulator. Interocclusal recording materials should have good dimensional stability for precise articulation.

Five patients with complete upper dentition and bilateral lower edentulousness were enrolled as volunteers for this study. Interocvlusal this study, the horizontal and vertical stability of the casts allowed their manual articulation in maximum intercuspation 1,3,4,6providing measurements that represented the standards for comparison to the different types of records evaluated.

Comparison of five interocclusal recording materials.

Millstein PL, Recordijg C. Principles, concepts and practice in prosthodontics. Clinical factors and clinical variation influencing the reproducibility of interocclusal recording methods. Analysis of variance showed significant differences in vertical distance among the combinations of materials under study.

The materials were evaluated by measuring the vertical distance between pairs of reference points located on the bases of the upper and lower articulated casts.

Despite its favorable properties, ZOE is a brittle material that strongly adheres to the dental surface due to contractions and, in the presence of excesses, it may suffer rupture and distortion and cause vertical displacement 9,17,