Strain Induced by Bio-High-Performance Polymers and Cobalt-Chromium Digitally Constructed Telescopic Partial Dentures after 1 Year Simulation of Function

Mohammed Muwafi; Marwa Sabet; Yasmine Thabet

doi:10.3889/oamjms.2022.7789

Authors

Mohammed Muwafi Department of Oral and Maxillofacial Prosthodontics, Faculty of Dentistry, Ain Shams University, Cairo, Egypt https://orcid.org/0000-0002-2556-8001
Marwa Sabet Department of Oral and Maxillofacial Prosthodontics, Faculty of Dentistry, Ain Shams University, Cairo, Egypt https://orcid.org/0000-0002-8407-5557
Yasmine Thabet Department of Oral and Maxillofacial Prosthodontics, Faculty of Dentistry, Ain Shams University, Cairo, Egypt https://orcid.org/0000-0002-3244-0313

DOI:

https://doi.org/10.3889/oamjms.2022.7789

Keywords:

Bio-high-performance polymers, Telescopic, Chewing simulators, Computer assisted design and computer assisted manufacturing

Abstract

BACKGROUND: Numerous attempts were made to reduce the adverse effects of the distal extension removable partial dentures (RPDs) and enhance their prognosis. High-performance polymers (HPP) were utilized in the construction of RPDs to maintain the health of the supporting structures.

AIM: Thus, this study was prompted to compare the strains induced by Bio HPP and Cobalt- Chromium (Co Cr) Computer Assisted Design and Computer Assisted Manufacturing telescopic RPDs after 1 year of function.

MATERIALS AND METHODS: A maxillary Kennedy class I was used in this study. Twelve telescopic RPDs were fabricated from two different materials. In Group A, six telescopic RPDs were milled from Co-Cr and in Group B, six telescopic retained RPDs were milled from Bio-HPP. Each partial denture was seated on the cast and introduced into the chewing simulator. The strain values were recorded using four strain gauges connected to a four-channel strain indicator. Statistical analysis of the resultant data was done using one-way ANOVA, followed by Tukey’s HSD for comparison within the same group. Student t-test was used for comparison between the different groups. The significance level was set at p ≤ 0.05.

RESULTS: During unilateral loading, the results showed higher strains in Group A at the abutments (473.33 μm/m ± 10.8, 193.39 μm/m ± 10.8) and at the distal aspect of the ridge (470.83 μm/m ± 13.93, 185 μm/m ± 20.83) than Group B. Independent t-test showed statistically significant difference between strains at the abutments of both groups (t = 70.4, p ≤ 0.0001), (t = 36.84, p ≤ 0.0001). Furthermore, there was a statistically significant difference between strains at the saddles of both groups (t = 51.62, p ≤ 0.0001), (t = 34.72, p ≤ 0.0001) respectively (DOF = 10).

CONCLUSIONS: In telescopic RPDs, Co Cr induces higher strain values on the abutments and the distal aspect of the ridge than Bio-HPP during bilateral and unilateral loading. During unilateral loading, Bio-HPP telescopic RPDs direct high strain values on the distal aspect of the ridge of the loaded side.

CLINICAL IMPLICATIONS: The materials that induce less stresses on the supporting structures of telescopic partial dentures on the long-term can be used to maintain the health of periodontally affected abutments.

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References

Ramchandran A, Agrawal KK, Chand P, Ramashanker, Singh RD, Gupta A. Implant-assisted removable partial denture: An approach to switch Kennedy Class I to Kennedy Class III. J Indian Prosthodont Soc. 2016;16(4):408-11. https://doi.org/10.4103/0972-4052.179262 PMid:27746609 DOI: https://doi.org/10.4103/0972-4052.179262

McCord JF, Grey NJ, Winstanley RB, Johnson A. A clinical overview of removable prostheses: 3. Principles of design for removable partial dentures. Dent Update. 2002;29(10):474-81. https://doi.org/10.12968/denu.2002.29.10.474 PMid:12572192 DOI: https://doi.org/10.12968/denu.2002.29.10.474

Hakkoum MA, Wazir G. Telescopic denture. Open Dent J. 2018;12:246-54. https://doi.org/10.2174/1874210601812010246 PMid:29760817 DOI: https://doi.org/10.2174/1874210601812010246

Akinyamoju CA, Dosumu OO, Taiwo JO, Ogunrinde TJ, Akinyamoju AO. Oral health-related quality of life: Acrylic versus flexible partial dentures. Ghana Med J. 2019;53(2):163-9. https://doi.org/10.4314/gmj.v53i2.12 PMid:31481813 DOI: https://doi.org/10.4314/gmj.v53i2.12

Katzer A, Marquardt H, Westendorf J, Wening JV, von Foerster G. Polyetheretherketone--cytotoxicity and mutagenicity in vitro. Biomaterials. 2002;23(8):1749-59. https://doi.org/10.1016/ s0142-9612(01)00300-3 PMid:11950045 DOI: https://doi.org/10.1016/S0142-9612(01)00300-3

Bathala L, Majeti V, Rachuri N, Singh N, Gedela S. The role of polyether ether ketone (Peek) in dentistry a review. J Med Life. 2019;12(1):5-9. https://doi.org/10.25122/jml-2019-0003 PMid:31123518 DOI: https://doi.org/10.25122/jml-2019-0003

Alexakou E, Damanaki M, Zoidis P, Bakiri E, Mouzis N, Smidt G, et al. PEEK high performance polymers: A review of properties and clinical applications in prosthodontics and restorative dentistry. Eur J Prosthodont Restor Dent. 2019;27(3):113-21. https://doi.org/10.1922/EJPRD_01892Zoidis09 PMid:31433133

Arnold C, Hey J, Schweyen R, Setz JM. Accuracy of CAD-CAM-fabricated removable partial dentures. J Prosthet Dent. 2018;119(4):586-92. https://doi.org/10.1016/j.prosdent.2017.04.017 PMid:28709674 DOI: https://doi.org/10.1016/j.prosdent.2017.04.017

Kim JJ. Revisiting the removable partial denture. Dent Clin North Am. 2019;63(2):263-78. https://doi.org/10.1016/j.cden.2018.11.007 PMid:30825990 DOI: https://doi.org/10.1016/j.cden.2018.11.007

Harb IE, Abdel-Khalek EA, Hegazy SA. CAD/CAM constructed poly(etheretherketone) (PEEK) framework of Kennedy Class I removable partial denture: A clinical report. J Prosthodont. 2019;28(2):e595-8. https://doi.org/10.1111/jopr.12968 PMid:30345575 DOI: https://doi.org/10.1111/jopr.12968

Cehreli MC, Iplikçioglu H. In vitro strain gauge analysis of axial and off-axial loading on implant supported fixed partial dentures. Implant Dent. 2002;11(3):286-92. PMid:12271568 DOI: https://doi.org/10.1097/00008505-200207000-00015

Yildiz C, Vanlioğlu BA, Evren B, Uludamar A, Ozkan YK. Marginal-internal adaptation and fracture resistance of CAD/CAM crown restorations. Dent Mater J. 2013;32(1):42-7. https://doi.org/10.4012/dmj.2012-148 PMid:23370869 DOI: https://doi.org/10.4012/dmj.2012-148

Revilla-León M, Meyers MJ, Zandinejad A, Özcan M. A review on chemical composition, mechanical properties, and manufacturing workflow of additively manufactured current polymers for interim dental restorations. J Esthet Restor Dent. 2019;31(1):51-7. https://doi.org/10.1111/jerd.12438 PMid:30367716 DOI: https://doi.org/10.1111/jerd.12438

Kirsch C, Ender A, Attin T, Mehl A. Trueness of four different milling procedures used in dental CAD/CAM systems. Clin Oral Investig. 2017;21(2):551-8. https://doi.org/10.1007/s00784-016-1916-y PMid:27469100 DOI: https://doi.org/10.1007/s00784-016-1916-y

Stawarczyk B, Eichberger M, Uhrenbacher J, Wimmer T, Edelhoff D, Schmidlin PR. Three-unit reinforced polyetheretherketone composite FDPs: Influence of fabrication method on load-bearing capacity and failure types. Dent Mater J. 2015;34(1):7-12. https://doi.org/10.4012/dmj.2013-345 PMid:25311236 DOI: https://doi.org/10.4012/dmj.2013-345

Hill EE, Rubel B, Smith JB. Flexible removable partial dentures: A basic overview. Gen Dent. 2014;62(2):32-6. PMid:24598492

Iyer R, Suchitra SR, Hegde D, Coutinho CA, Priya A. BIOHPP: Properties and applications in prosthodontics a review. J Res Dent. 2019;7(4):72-6. http://dx.doi.org/10.19177/jrd.v7e4201972-76 DOI: https://doi.org/10.19177/jrd.v7e4201972-76

Papathanasiou I, Kamposiora P, Papavasiliou G, Ferrari M. The use of PEEK in digital prosthodontics: A narrative review. BMC Oral Health. 2020;20(1):217. https://doi.org/10.1186/s12903-020-01202-7 PMid:32741366 DOI: https://doi.org/10.1186/s12903-020-01202-7

Zoidis P, Papathanasiou I, Polyzois G. The use of a modified poly-ether-ether-ketone (PEEK) as an alternative framework material for removable dental prostheses. A clinical report. J Prosthodont 2016;25(7):580-4. https://doi.org/10.1111/jopr.12325 PMid:26216668 DOI: https://doi.org/10.1111/jopr.12325

Stewart KL, Rudd KD, Kuebker WA. Clinical Removable Partial Prosthodontics. 2nd ed. St. Louis: CV Mosby; 2000. DOI: https://doi.org/10.1097/00008505-199304000-00027

Schwitalla AD, Spintig T, Kallage I, Müller WD. Flexural behavior of PEEK materials for dental application. Dent Mater. 2015;31(11):1377-84. https://doi.org/10.1016/j.dental.2015.08.151 PMid:26361808 DOI: https://doi.org/10.1016/j.dental.2015.08.151

Bohnenkamp DM. Removable partial dentures: Clinical concepts. Dent Clin North Am. 2014;58(1):69-89. https://doi.org/10.1016/j.cden.2013.09.003 PMid:24286646 DOI: https://doi.org/10.1016/j.cden.2013.09.003