Influence of the Fast-processing Technique on the Number of the Occlusal Contacts and Occlusal Vertical Dimension of Complete Dentures
Parsa Atashrazm, Leila Zamani Alavijeh, Maryam Sadat Sadrzadeh Afshar
Citation Information :
Atashrazm P, Alavijeh LZ, Afshar MS. Influence of the Fast-processing Technique on the Number of the Occlusal Contacts and Occlusal Vertical Dimension of Complete Dentures. J Contemp Dent Pract 2011; 12 (2):84-90.
Occlusal errors during acryl processing affect the retention and stability of complete dentures. The aim of the present study was to assess the influence of a short curing technique on the number of occlusal contacts and the occlusal vertical dimension (OVD) of complete dentures.
Materials and methods
Complete dentures were prepared. The number of occlusal contacts was recorded in centric relation (CR) using 60 ì articulation paper. The OVD was recorded with the waxed trial denture in place. Dentures were then invested and processed with compression molding and short cure water bath technique. The number of occlusal contacts was recorded again. The amount of pin opening was measured for all of the complete dentures on the articulator. Data were analyzed with paired t-test to determine the alterations.
Results
The mean number of occlusal contacts before and after processing was 10.9 ± 2.4 and 6.3 ± 3.1 respectively (4.7 ± 1.9 decrease; p < 0.001). A 2 mm mean increase in OVD was observed in 47.7% of the dentures with < 6 occlusal contact changes and 88.9% of the dentures with > 6 occlusal contact changes (p < 0.003). A significant change in the number of occlusal contacts was associated with an OVD increased up to two times.
Conclusion
The short curing technique seems to be related to the decreased occlusal contacts and increased OVD.
Clinical significances
More time is needed to adjust the occlusal errors of this method, because it has a negative effect on the morphologic pattern of artificial teeth of complete dentures and thus should be used carefully.
How to cite this article
Atashrazm P, Alavijeh LZ, Afshar MSS. Influence of the Fast-processing Technique on the Number of the Occlusal Contacts and Occlusal vertical Dimension of Complete Dentures. J Contemp Dent Pract 2011;12(2):84-90.
Waxing and processing the dentures, their insertion, and follow-up. In: Zarb GA, Bolender CL, Eckert SE, Fenton AH, Jacob RF, Mericske-Stern R. Prosthodontic treatment for edentulous patients: Complete dentures and implant-supported prostheses (12th ed). St Louis: Mosby 2004;389-425.
Comparison of the occlusal vertical dimension after processing complete dentures made with linqualized balanced occlusion and conventional balanced occlusion. J Prosthet Dent 2006;96:200-04.
Occlusal changes in complete dentures processed by pack-and-press and injectionpressing techniques. Eur J Prosthodont Restor Dent 2005;13: 78-80.
Dimensional change in complete dentures fabricated by injection molding and microwave processing. J Prosthet Dent 2003;89:37-44.
Changes in occlusal vertical dimension in microwave processing of complete dentures. Braz Dent J 2002;13:197-200.
Periodic evaluation of the occlusal vertical dimension of maxillary dentures from the wax trial denture through 48 hours after polymerization. J Prosthodont 2000;9:189-94.
Comparison of accuracy between compression- and injection-molding complete dentures. J Prosthet Dent 1999; 82:291-300.
Changes in vertical dimension of occlusion in conventional and microwave processing of complete dentures. J Prosthet Dent 1991;65: 306-08.
Comparison of changes in vertical dimension between compression and injection molding complete dentures. J Prosthet Dent 1989;62:716-18.
A threedimensional analysis of measuring occlusal contacts of complete denture. Shanghai Kou Qiang Yi Xue 2006;15:623-26.
A clinical application of the T-Scan II system—usefulness for evaluating occlusal contacts of complete denture wearers. Kokubyo Gakkai Zasshi 2002;69:277-84.
The terminal occlusal contacts of the edentulous patient with a complete denture. Rev Med Chir Soc Med Nat Iasi 1999;103:195-97.
Incidence of occlusal contacts with complete dentures during mastication using a 6-channel telemetry system: Preliminary measurements. J Oral Rehabil 1999;26:918-22.
Computer-aided evaluation of occlusal load in complete dentures. J Prosthet Dent 1992;67: 339-44.
Comparison of interocclusal contacts registered intraorally and after a remount procedure in complete denture patients. Eur J Prosthodont Restor Dent 2006;14: 146-50.
Research on remounting procedures. J Prosthet Dent 1977;38:338-41.
The effect of clinical remount procedures on the comfort and success of complete dentures. J Prosthet Dent 1987;57:53-57.
