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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The success of any prosthetic rehabilitating treatment depends on several aspects related to the recofding mounting of casts in the articulator. Keyf F, Altunsoy S. Small portions of alginate were placed above and below the resin plate. The use of wax as a interocclusal recording material has been debated because it reportedly causes mandibular deflection, resistance to closure and distortions with changes in temperature 3,9,14, Millstein PL, Hsu C.
The measurements obtained by manual articulation of the casts were used as the standards to which the measurements mateerials with the recording materials were compared. Excess wax was removed and the procedure was repeated. Despite its interocclusak 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, J Prosthet Dent ; An In Vitro Study G.
One method of articulating digital models is to use a digitized interocclusal record. However, statistically significant differences were not observed among the other materials. J Am Dent Assoc ; A plastic typodont was modified with reference points for interarch measurements and articulated in maximum intercuspal position on a semiadjustable hinge articulator.
interkcclusal Figure 6 shows that condensation silicone presented the greatest differences compared to the standards. Differential accuracy of silicone-body interocclusal records and associated weight loss due to volatiles.
Clinical evaluation of interocclusal recording materials in bilateral free end cases
Int J Prosthodont ; Rolls of 7 wax of uniform thickness were placed on the alveolar margin crest to create space for the alginate under the plate. Five self-polymerized acrylic resin plates were prepared to obtain interocclusal records with irreversible hydrocolloid. Five cast pairs upper and lower arches were obtained for each patient, in such a way that each tested combination of materials would be represented intericclusal a pair of casts recordnig their own standard measurements for evaluation.
The following combinations of materials were compared for interocclusal records: Five combinations of materials commonly used for intermaxillary records in cases of bilateral free end saddle were evaluated: Clinical factors and clinical variation influencing the reproducibility of interocclusal recording methods.
Comparison of five interocclusal recording materials.
Compressive strength of interocclusal recording materials. The patients were instructed to occlude their teeth normally in maximum intercuspation. Sitemap What’s New Feedback Disclaimer. After water spray cooling, the records were removed and kept in a recrding until for reading. All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License.
J Indian Prosthodont Soc ;7: 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.
Interocclusal recording materials
Vertical distances between the pairs of reference points were measured and used as comparative standard for the measurements obtained with interposition of the registrations. Moreover, successful treatment is highly dependent on precise mounting of the casts in the articulator.
In all recordinh of prosthetic rehabilitation, accurate diagnosis, proper planning and correct execution of clinical and laboratory procedures are mandatory for high-quality results. Polyvinyl siloxane is a more accurate interocclusal recording material when articulating digital models according to the mateerials described in this study. However, the accuracy of different interocclusal record materials to articulate digital models has yet to be evaluated. After setting of the material, the records were removed and stored in sealed plastic bags with no humidity until reading 9.
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 interoccljsal, if special attention is not taken during impression.
The recording base should provide adequate fitting as well as rigidity and stability. How to cite this article: 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 vertical opening Clinical evaluation of interocclusal recording materials in bilateral free end cases.
J Prosthet Dent ;