Comparative evaluation of linear dimensional change and resistance to the compressibility of three polyvinyl siloxane interocclusal recording materials: an in-vitro study
Keywords:Bite registration, Polyvinyl siloxane bite registration, Dimensional changes in bite registration materials
Background: Simulation of the patient’s occlusion on an articulator marks the basis for initiating any prosthodontic treatment. An understanding of the inherent properties of materials used to record the maxillomandibular relationship becomes essential to minimise errors. The soft recording material initially fills the spaces between teeth, hardens, and records the specific relationship of the arches. Elastomers as interocclusal record materials have consistently yielded the least error among the materials studied.
Aim: To comparatively evaluate linear dimensional change and resistance to compression of three polyvinyl siloxane interocclusal recording materials after setting.
Materials and methods: Clonebite (Ultradent), Colorbite D (Zhermack) and Imprint bite (3M ESPE) were evaluated for linear dimensional changes using Travelling Microscope and resistance to compressibility using Universal Testing Machine.
Results: Maximum linear dimensional change was observed in Imprint bite along with the highest resistance to compressibility. The minimum linear dimensional change was seen in Colorbite D while the least resistance to compressibility was seen in Clonebite.
Conclusion: From the results of the present study, the immediate articulation of casts is recommended after the bite registration using the material tested. However, a delay up to 8 hours could be considered as acceptable for Clonebite and Colorbite D.
Michalakis KX, Pissiotis A, Vassiliki A, Kapari D. An experimental study on particular physical properties of several interocclusal recording media. Part III: Resistance to compression after setting. J Prosthodont. 2004; 13(3): 150-159. https://doi.org/10.1111/j.1532-849X.2004.04024.x
Glossary of Prosthodontic Terms. 9th Edition, (GPT 9); J Prosthet Dent Volume 117 Issue 5S.
Chandu GS, Mohd. Faisal Khan, Mishra SK, Asnani P. Evaluation and comparison of resistance to compression of various interocclusal recording media: An in vitro study. J Int Oral Health. 2015, 7(5):24-29.
Soni D, Shah D. Interocclusal records for fixed pros-thodontics: A review of various techniques. Journal of Ahmedabad Dental College and Hospital. 2011; 2(1): 12-16.
Breeding LG, Dixon DL. Compression resistance of four interocclusal recording materials. J Prosthet Dent. 1992;68(6): 876-8. https://doi.org/10.1016/0022-3913(92)90542-I
Revised American Dental Association Specification number 19 for Non-aqueous, Elastomeric Dental Impression Materials. J Am Dent Assoc. 1977;94(4):733-741. https://doi.org/10.14219/jada.archive.1977.0334
Rosensteil, Land, Fujimoto. Diagnostic casts and related procedures (in) Contemporary Fixed Prosthodontics, 4th Edition, Mosby, Elsevier, Chicago, 2006.
Tejo SK, Kumar AG, Kattimani V, Desai PD. et al. A comparative evaluation of dimensional stability of three types of interocclusal recording materials- An in vitro multi-centre study. Head and Face Medicine. 2012; 8:27. https://doi.org/10.1186/1746-160X-8-27
Vergos VK, Tripodakis AP. Evaluation of vertical accuracy of interocclusal records. Int J Prosthodont. 2003;16(4):365-8
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