Evaluating the Fracture Resistance of Different Reinforcement Methods of Repaired Maxillary Complete Denture.


  • Zhala Dara Miran Department of Prosthodontics, College of Dentistry, Hawler Medical University, Erbil, Iraq.
  • Nasa Hasan Ahmad Department of Prosthodontics, College of Dentistry, Hawler Medical University, Erbil, Iraq.




Fracture Resistance, Repaired Maxillary Complete Denture


Complete dentures are made of acrylic material, though its main downside is the midline
fracture. Throughout years, many reinforcement methods were advocated to repair the
midline fracture. Hence, this study aims to evaluated different reinforcement methods
used to overcome fracture problem. And to asses which technique of repair can provide
better strength for complete denture repair.
Methods: The present study included a sample of 50 identical maxillary complete dentures.
The midline fracture was reproduced on center of the dentures, then repaired with five
different reinforcement methods (n = 10). The reinforcements were placed 1 mm away
from the tissue surface. First method; was repaired without reinforcing materials (as a control group). Second method; repaired with 3% of Magnesium oxide nanoparticles impregnated into auto-polymerizing resin. Third method; dentures reinforced with orthodontic
wire soldered as meshwork. Forth method; reinforcement with the fiber, fifth method; reinforcement with the chrome metal meshwork. The fracture strength of maxillary complete
denture was tested using universal testing machine and load was applied to the tissue surface of the denture with a 10-mm diameter ball at a crosshead speed of 5 mm/min. The
results were analyzed using stat graph version 5.1, one-way ANOVA (p<0.05).
Results: The denture fracture resistance was significantly decreased when denture was
repaired with 3% of magnesium oxide nanoparticles compared with control group, (p<
0.05). However, the highest value of fracture strength was when the denture was reinforced with fiber followed by orthodontic wire and chrome meshwork (p< 0.05).
Conclusion: Within the limitations of the present study, it can be concluded that:
There is
statistically significant difference present in the mean fracture resistance values in all
groups. The weakest denture was when acrylic reinforced with 3% of nanoparticles. Followed by control, chrome, orthodontic and the highest fracture resistance was when the
denture repaired with fiber reinforce.


Besford, J.N. and Sutton, A.F. Aesthetic possibilities in removable prosthodontics. Part 2: start

with the face not the teeth when rehearsing lip

support and tooth positions. British dental journal. 2018; 224(3), pp.141-148.

Cevik, P. and Eraslan, O. Effects of the addition of

titanium dioxide and silaned silica nanoparticles

on the mechanical properties of maxillofacial

silicones. Journal of Prosthodontics. 2017; 26(7),


Cevik, P. and Yildirim‐Bicer, A.Z.The effect of silica

and prepolymer nanoparticles on the mechanical

properties of denture base acrylic resin. Journal

of Prosthodontics. 2018; 27(8), pp.763-770.

Cruz RS, de Souza Batista VE, AraújoLemos CA,

Fernandes Oliveira HF, Verri FR. Esthetic Metal

Reinforcement for Fabrication of a Complete

Maxillary Denture. JSM Dent. 2017; 5(3): 1096.

Dragomir, G., Farcasiu, A.T. and Pascal, I. Romanian dentists’perception of flexibleremovable partial dentures. Romanian Journal of Stomatology.

, 67(1).

Elbanna, L., Essam, E., AL-Yasaky, M. and

Katamish, H. Effect of Different CAD/CAM Techniques on Marginal accuracy, Color matching and

Retention of Cemented versus Screw retained

Implant-supported Crowns. Al-Azhar Dental Journal for Girls,2019; 6(4), pp.493-506.

Ghahremani, L., Shirkavand, S., Akbari, F. and Sabzikari, N. Tensile strength and impact strength of

color modified acrylic resin reinforced with titanium dioxide nanoparticles. Journal of clinical and

experimental dentistry,2017; 9(5), p.e661.

IM, S.M., Huh, Y.H., Cho, L.R. and Park, C.J. Comparison of the fracture resistances of glass fiber

mesh-and metal mesh-reinforced maxillary complete denture under dynamic fatigue loading. The

journal of advanced prosthodontics. 2017; 9(1),


Keziah V, S., Ganapathy, D. and Kumar R, P .

Prevalence of Midline Fracture in Mandibular

Complete Denture. Indian Journal of Forensic

Medicine & Toxicology,2020;14(4).

Lambrecht JR, Kydd WL. A.. functional stress

analysis of the maxillary complete denturebase.

J Prosthet Dent. 2018; 12:865-72

Menon, R.S., Dhakshaini, M.R., Gujjari, A.K. and

Hegde, U. A clinical evaluation on the effect of

astringent on keratinization of oral mucosa

before and after the insertion of complete denture. Indian Journal of Dental Research. 2019;

(3), p.347.

Mittal, N., Khosla, A., Jain, S., Mattoo, K., Singla, I., Maini, A.P. and Manzoor, S. Effect of

Storage Media on the Flexural Strength of Heat

and Self Cure Denture Base Acrylic Resins–An

Invitro Study. Annals of the Romanian Society

for Cell Biology. 2021; pp.11743-11750.

Murthy HB, Shaik S, Sachdeva H, Khare S, Haralur SB, Roopa KT.Effect of Reinforcement Using Stainless Steel Mesh, Glass Fibers, and Polyethylene on the Impact Strength of Heat Cure

Denture Base Resin - An In Vitro Study. J Int

Oral Health2015; 7(6):71-9

Prasad DK, Dogra ES, Hegde C. A. Study to Evaluate Midline Fracture Resistance of Maxillary

Acrylic Denture Base Reinforced with Metal

Pattern in Various Palatal Contours. World J

Dent. 2020 ;11(4):287–293

Rathee, M., Bhoria, M. and Boora, P. Oral rehabilitation with metal base complete denture for

patient with oral lichen planus. IJRID.2014; 4,


Tokgoz, S., Ozdiler, A., Gencel, B., Bozdag, E.

and Isık-Ozkol, G. Effects of denture base thicknesses and reinforcement on fracture strength

in mandibular implant overdenture with bar

attachment: under various acrylic resin

types. European journal of dentistry. 2019; 13

(1), p.64.

Vallittu, P.K., Lassila, V.P. and Lappalainen, R., .

Acrylic resin-fiber composite—Part I: The effect

of fiber concentration on fracture resistance. The Journal of prosthetic dentistry.

; 71(6), pp.607-612.

Wang, Z., Han, E. and Ke, W. 2008. Effect of

acrylic polymer and nanocomposite with nanoSiO2 on thermal degradation and fire resistance

of APP–DPER–MEL coating. Polymer Degradation and Stability, 91(9), pp.1937-1947.

Yoshida K, Takahashi Y, Shimizu H. Effect of

embedded metal re- inforcements and their

location on the fracture resistance of acrylic

resin complete dentures. J Prosthodont.


Yu, S.H., Cho, H.W., Oh, S. and Bae, J.M. Effects

of glass fiber mesh with different fiber content

and structures on the compressive properties of

complete dentures. The Journal of prosthetic

dentistry. 2015;113(6), pp.636-644.

Yu, S.H., Oh, S., Cho, H.W. and Bae, J.M. Reinforcing effect of glass-fiber mesh on complete dentures in a test model with a simulated oral mucosa. The Journal of prosthetic dentistry. 2017; 118

(5), pp.650-657.




How to Cite

Miran ZD, Ahmad NH. Evaluating the Fracture Resistance of Different Reinforcement Methods of Repaired Maxillary Complete Denture. EDJ [Internet]. 2022 Dec. 30 [cited 2023 May 31];5(2):195-201. Available from: https://pha.hmu.edu.krd/index.php/journal/article/view/193



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