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A comparison of different methods and materials for establishing maximal intercuspal position: A clinical study
Herman T van den Bergh1, C Peter Owen2, Dale G Howes3
1Postgraduate student, Department of Prosthodontics, School of Oral Health Science, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa.
The Journal of Prosthetic Dentistry
|October 2, 2022
Summary
Accurately recording maximal intercuspal position is crucial. Injecting polyvinyl siloxane material buccally proved most reliable for dental cast accuracy, surpassing wax methods.
Area of Science:
- Dentistry
- Dental Materials Science
- Biomechanical Engineering
Background:
- Accurate recording of the maximal intercuspal position (MIP) is essential for prosthodontic and orthodontic treatments.
- The optimal method and material for capturing MIP for precise maxillary and mandibular cast articulation remain unclear.
Purpose of the Study:
- To compare the reliability of two common methods for recording MIP.
- To evaluate two popular registration materials for their accuracy in capturing MIP.
Main Methods:
- Seventeen participants underwent complete arch impressions using polyvinyl siloxane.
- Two MIP recording techniques were employed: closing through a registration material (wax or polyvinyl siloxane) and injecting polyvinyl siloxane buccally.
- Cast measurements were performed using digital calipers, with hand articulation serving as the control.
Main Results:
- Significant discrepancies were observed when participants closed through wax or polyvinyl siloxane materials (P<.001).
- No statistically significant differences were found compared to the control when polyvinyl siloxane was injected buccally after closure.
Conclusions:
- Hand articulation is the most accurate control method for MIP reproduction in dentate individuals.
- Buccal injection of polyvinyl siloxane material after closure provides the most accurate MIP recording among the tested methods.
