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The ability of different materials to reproduce accurate records of interocclusal relationships in the vertical dimension
Author(s) -
GHAZAL M.,
ALBASHAIREH Z. S.,
KERN M.
Publication year - 2008
Publication title -
journal of oral rehabilitation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.991
H-Index - 93
eISSN - 1365-2842
pISSN - 0305-182X
DOI - 10.1111/j.1365-2842.2008.01870.x
Subject(s) - wax , maxilla , materials science , significant difference , elastomer , dentistry , orthodontics , composite material , mathematics , medicine , statistics
Summary Restorations made on incorrectly mounted casts might require considerable intra‐oral adjustments to correct the occlusion or might even necessitate a remake of the restoration. The aim of this study was to evaluate interocclusal recording materials for their ability to reproduce accurate vertical interocclusal relationships after a storage time of 1 and 48 h, respectively. A custom‐made apparatus was used to simulate the maxilla and mandible. Eight interocclusal records were made in each of the following groups: G1: Aluwax (aluminium wax), G2: Beauty Pink wax (hydrocarbon wax compound), G3: Futar D, G4: Futar D Fast, G5: Futar Scan (G3‐G5: vinyl polysiloxane), G6: Ramitec (polyether). The vertical discrepancies were measured by an inductive displacement transducer connected to a carrier frequency amplifier after storage of the records for two periods of 1 and 48 h. Two‐way anova was used for statistical analysis. The mean vertical discrepancies in μm (1/48 h) for G1 (31/35) and G2 (35/38) were statistically significantly higher than for the other groups G3 (8/10), G4 (11/12), G5 (6/8) and G6 (5/8) ( P ≤ 0·05). There were no statistically significant differences between the elastomers tested. The effect of storage on the vertical discrepancies was statistically significant ( P < 0·001). Vinyl polysiloxane and polyether interocclusal records can be used to relate working casts during mounting procedures without significant vertical displacement of the casts.