J Dent Rehabil Appl Sci.  2018 Dec;34(4):262-269. 10.14368/jdras.2018.34.4.262.

Complete denture artificial teeth arrangement deformation in wax denture after festooning: deformation over time

• Lee SH
• Kwak YH
• Kim HJ

• KMID: 2432362
• DOI: http://doi.org/10.14368/jdras.2018.34.4.262

Abstract

PURPOSE
The purpose of this study was to evaluate the deformation of the complete denture artificial teeth arrangement after festooning over time.
MATERIALS AND METHODS
10 wax dentures of equal teeth arrangement and equal gingival contour were used in this study. Festooning of the wax dentures were conducted and 3D model scans were conducted every 10 minutes for 120 minutes. Interdental transverse distances were measured with the scanned images. Statistical analyses were performed with SPSS Ver. 22. 0.
RESULTS
Interdental transverse distance between teeth varied from 0.0999 mm to 0.1787 mm. Mean rate of deformation showed statistically significant change between the 40 - 50 minute interval and 50 - 60 minute interval and between the 50 - 60 minute interval and 60 - 70 minute interval. No statistically significant change of the mean rate of deformation was observed later on.
CONCLUSION
Monitoring of the interdental transverse distance for 120 minute after festooning have shown the deformation and displacment of the artificial teeth arrangement. From after the 60 - 70 minute interval after festooning, the mean deformation showed no statistically significant change of the mean rate of deformation was observed. Within the limitations of this in vitro study results suggest that the final occlusal adjustment in wax denture before complete denture curing should be proceeded at least 60 minutes later after festooning.

Keyword

compete dnture; artificial teth; tooth movement; festooning

MeSH Terms

Denture, Complete*
Dentures*
In Vitro Techniques
Occlusal Adjustment
Tooth
Tooth Movement
Tooth, Artificial*

Figure

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  Fig. 1 Silicone mold for cast.

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  Fig. 2 Fabricated Upper/lower Cast.

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  Fig. 3 Silicone mold for wax denture.

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  Fig. 4 Wax denture.

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  Fig. 5 Scan data of wax denture (U1: Maxillary interdental transverse distance of central incisors, UC: Maxillary interdental transverse distance of central canines UM: Maxillary interdental transverse distance of central molars).

Reference

References

1. Shetty NS, Udani TM. Movement of artificial teeth in waxed trial dentures. J Prosthet Dent. 1986; 56:644–8. DOI: 10.1016/0022-3913(86)90436-1. PMID: 3534233.

2. Brånemark PI, Adell R, Breine U, Hansson BO, Lindström J, Ohlsson A. Intra-osseous anchorage of dental prostheses. I. Experimental studies. Scand J Plast Reconstr Surg. 1969; 3:81–100. DOI: 10.3109/02844316909036699. PMID: 4924041.

3. Suzuki T, Kumagai H, Watanabe T, Uchida T, Nagao M. Evaluation of complete denture occlusal contacts using pressure-sensitive sheets. Int J Prosthodont. 1997; 10:386–91. PMID: 9484050.

4. Babu S, Manjunath S, Vajawat M. Effect of palatal form on movement of teeth during processing of complete denture prosthesis: An in-vitro study. Contemp Clin Dent. 2016; 7:36–40. DOI: 10.4103/0976-237X.177101. PMID: 27041898. PMCID: PMC4792053.

5. Mazaro JV, Gennari Filho H, Vedovatto E, Amoroso AP, Pellizzer EP, Zavanelli AC. Influence of different base thicknesses on maxillary complete denture processing: linear and angular graphic analysis on the movement of artificial teeth. J Craniofac Surg. 2011; 22:1661–5. DOI: 10.1097/SCS.0b013e31822e5d8c. PMID: 21959408.

6. Sotto-Maior BS, Jóia FA, Meloto CB, Cury AA, Rizzatti-Barbosa CM. Effect of double flasking and investing methods on artificial teeth movement in complete dentures processing. Gerodontology. 2012; 29:e435–9. DOI: 10.1111/j.1741-2358.2011.00494.x. PMID: 21615784.

7. Salloum AM. Effect of three investing materials on tooth movement during flasking procedure for complete denture construction. Saudi Dent J. 2016; 28:56–61. DOI: 10.1016/j.sdentj.2015.08.003. PMID: 26792971. PMCID: PMC4688437.

8. Council on Dental Materials and Devices. New American Dental Association Specification No.24 for base plate wax adopted. JADA. 1971; 82:603–6. DOI: 10.14219/jada.archive.1971.0082. PMID: 5276262.

9. Parvizi A, Lindquist T, Schneider R, Williamson D, Boyer D, Dawson DV. Comparison of the dimensional accuracy of injection-molded denture base materials to that of conventional pressure-pack acrylic resin. J Prosthodont. 2004; 13:83–9. DOI: 10.1111/j.1532-849X.2004.04014.x. PMID: 15210003.