INTEROCCLUSAL RECORDING MATERIALS PDF
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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Clinical evaluation of the accuracy of interocclusal recording materials. J Am Dent Assoc ; 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.
In conclusion, the combination of acrylic resin base and wax for interocclusal record yielded the least differences in comparison to the measurements obtained by manual articulation of the casts, i. 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.
Comparison of five interocclusal recording materials.
Occlusal registrations using alginate irreversible hydrocolloid impression material. None, Conflict of Interest: Interocclusal recording materials should have good dimensional stability for precise articulation. Published by Elsevier Inc. Five self-polymerized acrylic resin plates were prepared to obtain interocclusal records with irreversible hydrocolloid.
A total of 30 samples were made with each group consisting of ten samples. Int J Prosthodont ;3: Condensation silicone is extensively used for interocclusal records However, statistically significant differences were not observed among the other materials. Based on the findings of this study, the following scale of fidelity can be settled from best to worst: A review of principles and techniques for making interocclusal records for mounting working casts. 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.
Interocclusal recording materials
Special care was taken not to change the vertical dimension of occlusion at the moment of interoccusal recording. After setting of the material, the records were removed and stored in sealed plastic bags with no humidity until reading 9.
In all cases of prosthetic rehabilitation, accurate diagnosis, proper planning and correct execution of clinical and laboratory procedures are mandatory for high-quality results. 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.
Linear dimensional change and accompanying weight change.
Therefore, the method permits the transposition of the results obtained to edentulous cases that require intermaxillary records for mounting in maximum intercuspation when the stability factors are not present, or in centric relation.
Thus, intermaxillary recording plays an extremely important role in final results. These results are consistent with those reported by other authors, who stated that elastomers may suffer distortion at the time of cast joining, due to the compressive force generally exercised to maintain the casts in position 5,11, 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 Keyf F, Altunsoy S.
An In Vitro Study G. This article has been cited by. Differential accuracy of elastomeric recording materials and associated weight change. As an inclusion criterion, only 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.
Clinical evaluation of interocclusal recording materials in bilateral free end cases. Accepted September 21, Analysis of variance showed significant differences in vertical distance among the combinations of materials under study. A method of recording the interocclusal relationship of the teeth. Dental Materials, Properties and Manipulation. The recording base should provide adequate fitting as well as rigidity and stability.
An experimental study of vertical deviations induced by different interocclusal recording materials.
A clinical evaluation of materials for interocclusal registration in centric relation. 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. 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.
J Indian Prosthodont Soc ;7: An experimental study on particular physical properties of several interocclusal recording media. After the material jelled, interoccllusal records were removed Fig.
How to cite this article: Principles for selecting interocclusal records for articulation of dentate and partially dentate casts. Figure 6 shows that the differences obtained with this combination of materials were more marked at the reference points 3, 4, 5 and 6.
An Experimental study of vertical deviations induced by different interocclusal recording recordinb. For the records made with condensation silicone, the material was divided into two equal parts placed in the right and left edentulous regions of the lower arch and the patients were instructed to occlude normally in maximum intercuspation Fig.
Comparison of five interocclusal recording materials.
Motion View Software was used to articulate the digital models by matching points from the models to the digitized interocclusal records. When maximum intercuspation is considered, in cases in which the number of teeth present is satisfactory and will interpcclusal cast stability, the casts can be mounted by manual articulation Thus, 6 pairs of reference points were established to perform the vertical measurements Fig. Rolls of 7 wax of uniform thickness were placed on the alveolar margin crest to create space for the alginate under the plate.