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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Excess wax was removed and the procedure was repeated.

Using a bite registration to articulate digital models should be considered the first step in the articulation process, with a likely residual need to manipulate the models manually. A comparison of two methods for locating the intercuspal position ICP whilst mounting casts on an articulator.

In all cases of prosthetic rehabilitation, accurate diagnosis, proper planning and correct execution of clinical and laboratory procedures are mandatory for high-quality results.

Five readings were taken for each sample at each time interval and the mean was considered to measure the dimensional change by comparing with that of the original measurement in the die. A clinical evaluation of materials used in registering interjaw relationships.

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.


J Am Dent Assoc ; On the other hand, when large edentulous spaces are present, specifically in posterior free end cases, cast mounting is considerably onterocclusal complex 7. Mean percentage changes between different types of interocclussal recording materials at various time intervals Click here to view.

Comparison of five interocclusal recording materials.

How to cite this article: Linear dimensional change and accompanying weight change. Br Dent J ; An experimental study on particular physical properties of several interocclusal recording media. A plastic typodont was modified with reference points for interarch measurements and articulated in maximum intercuspal position on a semiadjustable hinge articulator.

All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License. This article has been cited by. An experimental study of vertical deviations induced by different interocclusal recording materials. Int J Prosthodont ;3: An In Vitro Study.

The measurements obtained by manual articulation of the casts were used as the standards to which the measurements obtained with the recording materials were compared.

Occlusal registrations using alginate irreversible hydrocolloid impression material. Sitemap What’s New Feedback Disclaimer. Differential accuracy of elastomeric recording materials and associated weight change. Figure 6 shows that condensation silicone presented the greatest differences compared to the standards.

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, There is a higher risk of distortion due to interference by the soft tissues of the margins, which can be compressed and may give origin to errors on cast mounting, if special attention is not taken during impression.


Compressive strength of interocclusal recording materials.

Properties of interocclusal registration material. Polyvinyl siloxane is a more accurate interocclusal recording material when articulating digital models according to the process described in this study.

Accepted September 21, 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. From the combination of interocxlusal investigated in this study, the following scale of fidelity can be settled from best to worst result: A study of interocclusal record materials.

Clinical factors and clinical maaterials influencing the reproducibility of interocclusal recording methods. Published by Elsevier Inc. An interocclusal record made of a combination of wax and acrylic resin. After setting of the material, the records were removed and stored in sealed plastic bags with no humidity until reading 9.

Compression resistance of four interocclusal recording materials.

Comparison of five interocclusal recording materials.

Five patients with complete upper dentition and bilateral lower edentulousness were enrolled as volunteers for this study. Cylinders of 7 wax were softened with a heated spatula and set in place during the clinical procedures.

Karthikeyan K, Annapurni H.