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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Interocclusal recording materials
The distances between corresponding interarch markers intetocclusal measured and compared with the measurements taken on the physical typodont gold standard. Accuracy and dimensional stability of four interocclusal recording materials.
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.
Polyvinyl siloxane materials were significantly more likely to lead to successful articulation than were the other interocclusal record materials. Keyf F, Altunsoy S. Mzterials a second stage, the records were interposed between the casts and fixed with wooden rods and compound, so that the measurements could be made. J Oral Rehabil ; Five self-polymerized acrylic resin plates were prepared materkals obtain interocclusal records with irreversible hydrocolloid.
A clinical evaluation of materials used in registering interjaw relationships. Differential accuracy of elastomeric recording materials and associated weight change. Millstein PL, Hsu C. How to cite this article. Services on Demand Journal. Interocclusal recording materials should have good dimensional stability for precise articulation. When ijterocclusal intercuspation is considered, in cases in materixls the number of teeth present is satisfactory and will provide cast stability, the casts can be mounted by manual articulation J Am Dent Assoc ; The success of any prosthetic rehabilitating treatment depends on several aspects related to the precise mounting of casts in rfcording 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. 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. Thus, 6 pairs of reference points were established to perform the vertical measurements Fig.
Mean percentage changes between different types of interocclussal recording materials at various time intervals Click here to view. Cylinders of 7 wax were softened with a heated spatula and set in place during the clinical procedures. As an inclusion criterion, maaterials individuals who had some teeth remaining in the mandibular arch up to premolars were selected, in order to allow manual articulation of the casts by the presence of tripod support and horizontal stability.
Intermaxillary record with condensation silicone putty produced the greatest differences compared to manual articulation of the casts. After setting of the material, the records were removed and stored in sealed plastic bags with no humidity until reading 9.
An interocclusal record made of a combination of wax and acrylic resin. Despite its favorable properties, ZOE interoclcusal 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, 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.
Comparison of five interocclusal recording materials.
Determination of the accuracy of wax interocclusal registration. Notwithstanding the criticisms, this is still the most often used material in daily clinical practice because of its ease of handling, clinical versatility and low cost 3, Perforations were made in the resin with a 5 spherical interlcclusal to retain the material Fig.
Determination of the accuracy of laminated wax interocclusal wafers. Retentive areas of the lower casts were relieved for preparation of five self-polymerized acrylic resin bases. Evaluation of vertical accuracy of interocclusal records.
The materials were evaluated by measuring the vertical distance between pairs of reference points located intwrocclusal the bases of the upper and lower articulated casts. Thus, intermaxillary recording plays an extremely important role in final results.
Karthikeyan K, Annapurni H. In this study, the combination of acrylic resin and wax presented the lowest mean value of vertical separation between casts. A study of interocclusal record materials. Condensation silicone is extensively used for interocclusal records Compressive strength of interocclusal recording materials. In 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.
Accepted September 21, Clinical evaluation of the accuracy of interocclusal recording materials. 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.