Evaluation of physico-mechanical properties of dental plaster modified with pulverized acrylic waste


Article Sidebar

Pdf 138
Published: Apr 10, 2023
DOI: https://doi.org/10.37983/IJDM.2023.5101
Keywords:
Dental Plaster, Acrylic waste, Compressive strength, Setting time, Reproducibility
Section
Original Articles
Statistic

Downloads

Download data is not yet available.

Metrics

Metrics Loading ...

Main Article Content

Sai Vishnu Ponnapalli
Vishnu Dental College
Robbi Keerthana
Vishnu Dental College
Rama Krishna Alla
Vishnu Dental College
https://orcid.org/0000-0002-0668-4605
Majji Vasavi
Vishnu Dental College
Uma Devi, Medicharla
Vishnu Dental College
AV Ramaraju
Vishnu Dental College
Suresh Sajjan MC
Vishnu Dental College

Abstract

Background: Dental plaster is most widely used to make temporary casts and as an investment medium during the fabrication of removable complete and partial denture prostheses. Dental plasters exhibit poor mechanical properties.


Aim: This study aimed to evaluate the physico-mechanical properties of dental plaster modified with various concentrations of pulverized acrylic waste.


Materials and Methods: A total of 120 specimens were fabricated using dental plaster and were divided into four groups of 30 specimens each to evaluate setting time, one-hour compressive strength, 24-hour compressive strength, and surface reproducibility. Each group was subdivided into five groups of six specimens (n=6), each with the incorporation of various concentrations of pulverized acrylic powder. The specimens incorporated with various concentrations of pulverized acrylic powder (0.5 wt%, 1.0 wt%, 5.0 wt% and 10.0 wt%) were considered as modified groups and the dental plaster with no additives was considered as a control group. The initial and final setting times were measured using a Gillmore needle apparatus, the compressive strength was measured using a universal testing machine, and the surface reproducibility was analyzed using a stereo microscope. The obtained data were subjected to statistical analysis using one-way ANOVA and post hoc analysis.  


Results: The incorporation of 0.5 wt% resulted in more final and initial setting times. The one-hour and 24-hour compressive strengths of the dental plaster increased with increasing concentration of acrylic waste. Poor surface details were observed with an increase in the concentration of acrylic waste.


Conclusions: The addition of acrylic waste resulted in an increase in the one-hour and 24-hour compressive strengths, decreased initial and final setting times, and poor surface reproducibility.

Article Details


How to Cite
Ponnapalli, S. V., Keerthana, R., Alla, R. K., Vasavi, M., Medicharla, U. D., Ramaraju, A., & Sajjan MC, S. . (2023). Evaluation of physico-mechanical properties of dental plaster modified with pulverized acrylic waste. International Journal of Dental Materials, 5(1), 1–8. https://doi.org/10.37983/IJDM.2023.5101
Creative Commons License

This work is licensed under a Creative Commons Attribution 4.0 International License.

This work is licensed under a Creative Commons Attribution 4.0 International License.

Author Biographies

Sai Vishnu Ponnapalli, Vishnu Dental College

Undergraduate Student, Vishnu Dental College, Bhimavaram, Andhra Pradesh, India.

Robbi Keerthana, Vishnu Dental College

Undergraduate Student, Vishnu Dental College, Bhimavaram, Andhra Pradesh, India.

Rama Krishna Alla, Vishnu Dental College

Associate Professor, Department of Dental Materials, Vishnu Dental College, Bhimavaram, Andhra Pradesh, India.

Majji Vasavi, Vishnu Dental College

Senior Lecturer, Department of Prosthodontics and Implantology, Vishnu Dental College, Bhimavaram, Andhra Pradesh, India.

Uma Devi, Medicharla, Vishnu Dental College

Graduate, Vishnu Dental College, Bhimavaram, Andhra Pradesh, India.

AV Ramaraju, Vishnu Dental College

Professor, Department of Prosthodontics and Implantology, Vishnu Dental College, Bhimavaram, Andhra Pradesh, India.

Suresh Sajjan MC, Vishnu Dental College

Professor, Department of Prosthodontics and Implantology, Vishnu Dental College, Bhimavaram, Andhra Pradesh, India.

References

  1. Anusavice KJ. Phillip’s Science of Dental Materials. 11th ed. Philadelphia; WB Saunders; 2003. p. 621-54.
  2. Alla RK. Gypsum Products (in) Dental Materials Science. 1st Edition, Jaypee Brothers Medical Publishers, India. 235-247.
  3. Firas Abd Kati, Ihab N. Yassin, Wael Abdul Razak, Effect of Adding some Additives and Drying Method on Compressive Strength of Gypsum Products. TJDS. 2017; 5(2):25-32.
  4. Alla RK, Swamy KNR, Vyas R, Konakanchi A, Conventional and contemporary polymers for the fabrication of denture prosthesis: Part I: Overview of Composition, Chemistry and Properties. Int J Appl Dent Sci, 2015:1(4):82-9.
  5. Gosavi SS, Gosavi SY, Alla RK. Local and systemic effects of unpolymerised monomers. J. Dent. Res. 2010;7(2):82.
  6. Thopegowda NB, Shenoy K, Shankarnarayana RK, Kukkila J, Vaddya SB, Gingipalli K. Recycling of materials used in dentistry with reference to its economical and environmental aspects. Int J Health Rehabil Sci. 2013;2(3):140-5.
  7. American Dental Association. Specification No. 25 for dental gypsum products. In: Certification program for dental materials. Chicago: American Dental Association 1990. p. 1-14.
  8. Millstein PL. Determining the accuracy of gypsum casts made from type IV dental stone. J Oral Rehabil 1992;19(3):239-43. https://doi.org/10.1111/j.1365-2842.1992.tb01098.x
  9. Elshereksi NW, Alshabah BL, Abouod NM, Albahloul RK. Physical properties of dental plaster filled with marble powder: a pilot study. Int J Dent Mater. 2022;4(2):32- 36. https://doi.org/10.37983/IJDM.2022.4202
  10. Duke P, Moore BK, Haug SP, Andres CJ. Study of the physical properties of type IV gypsum, resin-containing, and epoxy die materials. J Prosthet Dent 2000;83(4):466-73. https://doi.org/10.1016/S0022-3913(00)70043-6
  11. Craig Pickett. Why Compressive Strength Is Important When Choosing a Dental Stone or Plaster. https://info.whipmix.com/why-compressive-strength-is-important-when-choosing-a-dental-stone-or-plaster accessed on 02.11.2022.
  12. Khan JA, Ginjupalli K, Upadhya NP, Bhat NB, Awatramaney T, Khan S, Ballal M. Development and Evaluation of Silver Nanosystem-based Novel Antimicrobial Dental Stone. World J Dent. 2022;13(2):105. https://doi.org/10.5005/jp-journals-10015-1914
  13. Hatkar P. Preserving natural tooth structure with composite resin. J Cosmetic Dent. 2010;26(3):26-36.
  14. Halawany HS. A review on miswak (Salvadora persica) and its effect on various aspects of oral health. Saudi Dental J. 2012;24(2):63-9. https://doi.org/10.1016/j.sdentj.2011.12.004
  15. Amaral CM, Rodrigues JA, Erhardt M CG, Araujo MWB, Marchi GM, Heymann HO, et al. Effect of whitening dentifrice on the superficial roughness of esthetic restorative materials. J. Esthet. Restor. Dent. 2006;18(2):102-9. https://doi.org/10.2310/6130.2006.00017_1.x
  16. Hamdy TM, Abdelnabi A, Abdelraouf RM. Reinforced dental plaster with low setting expansion and enhanced microhardness. Bulletin of the National Research Center. 2020;44(1):1-7. https://doi.org/10.1186/s42269-020-00334-8
  17. Dulaimi, Fadhil S, Kanaan SM. The Effect of Microwave Oven Drying on the Compressive Strength of Type III and IV Dental Stones at Different Time Intervals. Open Dent J. 2018;12:494-500. https://doi.org/10.2174/1874210601812010494
  18. Darvell BW. Gypsum Materials (in) Materials Science for Dentistry. 10th Edition. Woodhead Publishing Series in Biomaterials. 2018, Pages 40-69. https://doi.org/10.1016/B978-0-08-101035-8.50002-X
  19. Vadapalli SB, Atluri K, Putcha MS, Kondreddi S, Kumar NS, Tadi DP. Evaluation of surface detail reproduction, dimensional stability and gypsum compatibility of monophase polyvinyl-siloxane and polyether elastomeric impression materials under dry and moist conditions. J. Int. Soc. Prev. 2016;6(4):302. https://doi.org/10.4103/2231-0762.186795
  20. Petrie CS, Walker MP, O’mahony AM, Spencer P. Dimensional accuracy and surface detail reproduction of two hydrophilic vinyl polysiloxane impression materials tested under dry, moist, and wet conditions. J Prosthet Dent 2003;90(4):365-72. https://doi.org/10.1016/S0022-3913(03)00515-8

Most read articles by the same author(s)

<< < 1 2