Advances in the medical sciences along with rapid increase in the specialized and better treatment modalities, certainly prolonged the human life with a drastic increase in the number of elderly in the past few decades. Tooth loss is one of the manifestations of aging. Dentures and dental implants are the major prosthetic devices given to restore physiological and esthetic functions of oral tissues of edentulous or partially edentulous patients. Complete and partial dentures based on polymeric compositions are the most popular devices since the cost of dental implants and metal-base dentures are much higher. Among the polymers, poly (methyl methacrylate) (PMMA) is the most commonly used material for this purpose. Although, this material is not ideal in every respect, it is the combination of qualities rather than one single desirable property that accounts for its popularity and usage. One of the main drawbacks of this material is considered to be its poor mechanical performance. There have been several attempts in the recent past to address the problem of inferior mechanical properties of these materials. Generally, there are three ways which have been investigated to im prove the mechanical properties of denture bases; search for or development of an alternative material to PMMA; chemical modification of PMMA; and the reinforcement of PMMA. Present article is a review of types of fibres rein forced in denture prosthesis and their effects on mechanical properties of denture prosthesis.
T. R. Meng and M. A. Latta., “Physical Properties of Four Acrylic Denture Base Resins,” Journal of Contemporary Dental Practice, Vol. 6, No. 4, 2005, pp. 93-100.
R. W. Phillips, “Skinner’s Science of Dental Materials,” 10th Edition, W.B. Saunders, Philadelphia, 1996, pp. 237-300.
G. Uzun, N. Hersek and T. Tin?er, “Effect of Five Woven Fiber Reinforcements on the Impact and Transverse Strength of a Denture Base Resin,” Journal of Prosthetic Dentistry, Vol. 81, No. 5, 1999, pp. 616-620. doi:10.1016/S0022-3913(99)70218-0
M. Vojdani, M. Sattari, Sh. Khajehoseini and M. Farzin, “Cytotoxicity of Resin-Based Cleansers: An in Vitro study,” Iranian Red Crescent Medical Journal, Vol. 12, No. 2, 2010, pp. 158-162.
R. G. Craig and J. M. Power, “Restorative Dental Materials,” 11th Edition, Mosby, St. Louis, 2002, pp. 87-99.
M. H. El-Mahdy, W. E. El-Gheriani, B. A. Idris and A.-H. A. Saad, “Effect of Coupling Agents on the Important Physico-Mechanical Properties of Acrylic Resin Reinforced with Ceramic Filler,” Ainshams Dental Journal, Vol. 8, No. 2, 2005, pp. 243-254.
U. R. Drabar, R. Huggett and A. Harrison, “Denture Fracture—A Survey,” British Dental Journal, Vol. 176, 1994, pp. 342-345. doi:10.1038/sj.bdj.4808449
A. Arikan, Y. K. Ozkan, T. Arda and B. Akal?n, “Effect of 180 Days of Water Storage on the Transverse Strength of Acetal Resin Denture Base Material,” Journal of Prosthodontics, Vol. 19, No. 1, 2010, pp. 47-51. doi:10.1111/j.1532-849X.2009.00495.x
Y. Hirajima, H. Takahashi and S. Minakuchi, “Influence of a Denture Strengthener on the Deformation of Complete Denture,” Dental Materials Journal, Vol. 28, No. 4, 2009, pp. 507-512. doi:10.4012/dmj.28.507
P. K. Vallittu, “Fracture Surface Characteristics of Damaged Acrylic-Resin-Based Dentures as Analysed by SEM-Replica Technique,” Journal of Oral Rehabilitation, Vol. 23, No. 8, 1996, pp. 524-529. doi:10.1111/j.1365-2842.1996.tb00890.x
H. W. A.Wiskott, J. I. Nicholls and U. C. Belser, “Stress Fatigue: Basic Principles and Prosthodontic Implications,” International Journal of Prosthodontics, Vol. 8, No. 2, 1995, pp. 105-116.
D. C. Jagger, A. Harrison and K. D. Jandt, “The Reinforcement of Dentures,” Journal of Oral Rehabilitation, Vol. 26, No. 3, 1999, pp. 185-194. doi:10.1046/j.1365-2842.1999.00375.x
R. A. Rodford, “Further Development and Evaluation of High-Impact-Strength Denture Base Materials,” Journal of Dentistry, Vol. 18, No. 3, 1990, pp. 151-157. doi:10.1016/0300-5712(90)90056-K
G. D. Stafford, J. F. Bates, R. Huggett and R. Handley, “A Review of the Properties of Some Denture Base Polymers,” Journal of Dentistry, Vol. 8, No. 4, 1980, pp. 292-306. doi:10.1016/0300-5712(80)90043-3
Y. Katsumata, S. Hojo, N. Hamano, T. Watanabe, H. Yamaguchi, H. Okada, T. Teranaka and S. Ino, “Bonding Strength of Autopolymerizing Resin to Nylon Denture Base Polymer,” Dental Materials Journal, Vol. 8, No. 4, 2009, pp. 2409-2418. doi:10.4012/dmj.28.409
M. Vojdani and A. A. R. Khaledi, “Transverse Strength of Reinforced Denture Base Resin with Metal Wire and E-Glass Fibers,” Journal of Dentistry, Vol. 3, No. 4, 2006, pp. 167-172.
S. B. Sehajpal and V. K. Sood, “Effect of Fillers on Some Physical Properties of Acrylic Resin,” The Journal of Prosthetic Dentistry, Vol. 61, No. 6, 1989, pp. 746-751. doi:10.1016/S0022-3913(89)80055-1
T. Nejatian, A. Johnson and R. Van Noort, “Reinforcement of Denture Base Resin,” Advances in Science and Technology, Vol. 49, 2006, pp. 124-129. doi:10.4028/www.scientific.net/AST.49.124
P. K. Vallittu and V. P. Lassila, “Effect of Metal Strengthener’S Surface Roughness on Fracture Resistance of Acrylic Denture Base Material,” Journal of Oral Rehabilitation, Vol. 19, No. 4, 1992, pp. 385-391. doi:10.1111/j.1365-2842.1992.tb01580.x
S. K. Garoushi, L. V. J. Lassila and P. K. Vallittu, “Short Fiber Reinforced Composite: The Effect of Fiber Length and Volume Fraction,” Journal of Contemporary Dental Practice, Vol. 7, No. 5, 2006, pp. 10-17.
H. D. Stipho, “Effect of Glass Fibre Reinforcement on Some Mechanical Properties of Autopolymerizing Polymethyl Methacrylate,” Journal of Prosthetic Dentistry, Vol. 79, No. 5, 1998, pp. 580-584. doi:10.1016/S0022-3913(98)70180-5
I. H. Tacir, J. D. Kama, M. Zortuk and S. Eskimez, “Flexural Properties of Glass Fibre Reinforced Acrylic Resin Polymers,” Australian Dental Journal, Vol. 51, No. 1, 2006, pp. 52-56. doi:10.1111/j.1834-7819.2006.tb00401.x
P. K. Vallittu, “Strength and Interfacial Adhesion,” In: P. K. Vallittu, Ed., The Second International Symposium of Fibre Reinforced Plastics in Dentistry, University of Türkü, Türkü, 2002, pp. 2-28.
J. De Boer, S. G. Vermilyea and R. E Brady, “The Effect of Carbon Fiber Orientation on the Fatigue Resistance and Bending Properties of Two Denture Resins,” The Journal of Prosthetic Dentistry, Vol. 51, No. 1, 1984, pp. 119-121. doi:10.1016/S0022-3913(84)80117-1
R. Tandon, S. Gupta and S. K. Agarwal, “Denture Base Materials: From Past to Future,” Indian Journal of Dental Sciences, Vol. 2, No. 2, 2010, pp. 33-39.
N. Yazdanie and M. Mahood, “Carbon Fiber Acrylic Resin Composite: An Investigation of Transverse Strength,” Journal of Prosthetic Dentistry, Vol. 54, No. 4, 1985, pp. 543-547. doi:10.1016/0022-3913(85)90431-7
A. J. Bowman and T. R. Manley, “The Elimination of Breakages in Upper Dentures by Reinforcement with Carbon Fibre,” British Dental Journal, Vol. 156, 1984, pp. 87-89. doi:10.1038/sj.bdj.4805275
?. Y?ndem, M. T. Yücel, F. Aykent and A. N. ?ztürk, “Flexural Strength of Denture Base Resin Reinforced with Different Fibers,” Journal of the SU Faculty of Dentistry, Vol. 20, No. 1, 2011, pp. 15-20.
S. Y. Chen, W. M. Liang and P. S. Yen, “Reinforcement of Acrylic Denture Base Resin by Incorporation of Various Fibres,” Journal of Biomedical Materials Research, Vol. 58, No. 2, 2001, pp. 203-208. doi:10.1002/1097-4636(2001)58:2 3.0.CO;2-G
J. Ozen, C. Sipahi, A. Caglar and M. Dalkiz, “In Vitro Cytotoxicity of Glass and Carbon Fiber-Reinforced Heat-Polymerized Acrylic Resin Denture Base Material,” Turkish Journal of Medical Sciences, Vol. 36, No. 2, 2006, pp. 121-126.
K. Ekstrand, I. E. Ruyter and H. Wellendorf, “Carbon Graphite Fiber Reinforced Poly(methyl methacrylate): Properties under Dry and Wet Conditions,” Journal of Biomedical Materials Research, Vol. 21, No. 9, 1987, pp. 1065-1080. doi:10.1002/jbm.820210902
T. Kanie, K. Fujii, H. Arikawa and K. Inoue, “Flexural Properties and Impact Strength of Denture Base Polymer Reinforced with Woven Glass Fibres,” Dental Materials, Vol. 16, No. 2, 2000, pp. 150-158. doi:10.1016/S0109-5641(99)00097-4
T. J. D. Kama, M. Zortuk and S. Eskimez, “Flexural Properties of Glass Fibre Reinforced Acrylic Resin Polymers,” Australian Dental Journal, Vol. 51, No. 1, 2006, pp. 52-56. doi:10.1111/j.1834-7819.2006.tb00401.x
I. M. Berrong, R. M. Weed and J. M. Young, “Fracture Resistance of Kevlar-Reinforced Poly(methyl methacrylate) Resin: A Preliminary Study,” International Journal of Prosthodontics, Vol. 3, No. 4, 1990, pp. 391-395.
A. M. H. Grave, H. D. Chandler and J. F. Wolfaardt, “Denture Base Acrylic Reinforced with High Modulus Fibre,” Dental Materials, Vol. 1, No. 5, 1985, pp. 185-187. doi:10.1016/S0109-5641(85)80015-4
M. Braden, K. W. M. Davy, S. Parker, N. H. Ladizesky and I. M. Ward, “Denture Base Poly(methyl methacrylate) Reinforced with Ultra-High Modulus Polyethylene Fibres,” British Dental Journal, Vol. 164, 1988, pp. 109-113. doi:10.1038/sj.bdj.4806373
D. L. Gutteridge, “Reinforcement of Poly(methyl methacrylate) with Ultra-High-Modulus Polyethylene Fibre,” Journal of Dentistry, Vol. 20, No. 1, 1992, pp. 50-54. doi:10.1016/0300-5712(92)90012-2
N. H. Ladizesky, Y. Y. Cheng and I. M. Ward, “Acrylic Resin Reinforced with Chopped High Performance Poly Ethylene Fibre Properties and Denture Construction,” Dental Materials, Vol. 9, No. 2, 1993, pp. 128-135. doi:10.1016/0109-5641(93)90089-9
D. L. Dixon and L. C. Breeding, “The Transverse Strengths of Three Denture Base Resins Reinforced with Polyethylene Fibres,” Journal of Prosthetic Dentistry, Vol. 67, No. 3, 1992, pp. 417-419. doi:10.1016/0022-3913(92)90261-8
L. Goguta, L. Mar-savina, D. Bratu and F. Topala, “Impact Strength of Acrylic Heat Curing Denture Base Resin Reinforced with E-Glass Fibers,” Temporomandibular Joint Disorders, Vol. 56, No. 1, 2006, pp. 88-91.
P. K. Vallittu and K. Ekstrand, “In Vitro Cytotoxicity of Fibre-Polymethyl Methacrylate Composite Used in Dentures,” Journal of Oral Rehabilitation, Vol. 26, No. 8, 1999, pp. 666-671. doi:10.1046/j.1365-2842.1999.00431.x
G. S. Solnit, “The Effect of Methyl Methacrylate Reinforcement with Silane-Treated and Untreated Glass Fibres,” Journal of Prosthetic Dentistry, Vol. 66, No. 3, 1991, pp. 310-314. doi:10.1016/0022-3913(91)90255-U
P. K. Vallittu, “The Effect of Void Space and Polymerization Time on Transverse Strength of Acrylic-Glass Fibre Composite,” Journal of Oral Rehabilitation, Vol. 22, No. 4, 1995, pp. 257-261. doi:10.1111/j.1365-2842.1995.tb00083.x
K. K. Narva, P. K. Vallittu, Helenius and A. Yli-Urpo, “Clinical Survey of Acrylic Resin Removable Denture Repairs with Glass-Fibre Reinforcement,” International Journal of Prosthodontics, Vol. 3, 2001, pp. 219-224.
O. Karacaer, T. N. Polat, A. Tezvergil, L. V. Lassila and P. K. Vallittu, “The Effect of Length and Concentration of Glass Fibres on the Mechanical Properties of an Injectionm and a Compression-Molded Denture Base Polymer,” Journal of Prosthetic Dentistry, Vol. 90, No. 4, 2003, pp. 385-393. doi:10.1016/S0022-3913(03)00518-3
A. K. Cizdemir and T. N. Polat, “The Effect of Glass Fibre Distribution on the Transverse Strength and Surface Smoothness of Two Denture Resins,” Dental Materials Journal, Vol. 22, No. 4, 2005, pp. 600-609.
M. Nakamura, H. Takahashi and I. Hayakawa, “Reinforcement of Denture Base Resin with Short-Rod Glass Fiber,” Dental Materials Journal, Vol. 26, No. 5, 2007, pp. 733-738. doi:10.4012/dmj.26.733
P. K. Vallittu, “Flexural Properties of Acrylic Resin Polymers Reinforced with Unidirectional and Woven Glass Fibers,” Journal of Prosthetic Dentistry, Vol. 81, No. 3, 1999, pp. 318-326. doi:10.1016/S0022-3913(99)70276-3
M. Negrutiu, C. Sinescu, L. Goguta, F. Topala, M. Rom?nu and A. G. Podoleanu, “Different Types of Fiber Reinforced All Dentures Bases Evaluated by En-Face Optical Coherence Tomography and Numerical Simulation,” World Academy of Science, Engineering and Technology, Vol. 53, 2009, pp. 1236-1241.
P. K. Vallittu, “Curing of a Silane Coupling Agent and Its Effect on the Transverse Strength of Autopolymerizing Polymethylmetactylate-Glass Fibre Composite,” Journal of Orthopaedic Research, Vol. 24, No. 2, 1997, pp. 124– 130. doi:10.1046/j.1365-2842.1997.00464.x
P. Hari, A. Kalavathy and H. S. Mohammed, “Effect of Glass Fiber and Silane Treated Glass Fiber Reinforcement on Impact Strength of Maxillary Complete Denture,” Annals and Essences of Dentistry, Vol. 3, No. 4, 2011, pp. 7-12. doi:10.5368/aedj.2011.3.4.1.2
Unalan, I. Dikbas and O. Gurbuz, “Transverse Strength of Poly-Methylmethacrylate Reinforced with Different Forms and Concentrations of E-Glass Fibres,” OHDMBSC, Vol. 9, No. 3, 2010, pp. 144-147.
D. Vojvodi?, D. Komar, Z. Schauperl, A. ?elebi?, K. Mehuli? and D. ?abarovi?, “Influence of Different Glass Fiber Reinforcements on Denture Base Polymer Strength (Fiber Reinforcements of Dental Polymer),” Medical Glass, Vol. 6, No. 2, 2009, pp. 227-234.
D. Galan and E. Lynch, “The Effect of Reinforcing Fibres in Denture Acrylics,” Journal of the Irish Dental Association, Vol. 35, 1989, pp. 109-113.
P. K. Vallittu, “Comparison of in Vitro Fatigue Resistance of Acrylic Resin Partial Denture Reinforced with Continuous Glass Fibres or Metal Wire,” Journal of Prosthodontics, Vol. 5, No. 2, 1996, pp. 115-121. doi:10.1111/j.1532-849X.1996.tb00285.x
V. M. Miettinen and P. K. Vallittu, “Release of Residual Methyl Methacrylate into Water from Glass Fiber-Poly-Methl Methacrylate Composite Used in Dentures,” Biomaterials, Vol. 18, No. 2, 1997, pp. 181-185.
H. Yilmaz, C. Aydin, A. Caglar, et al., “The Effect of Glass Fiber Reinforcement on the Residual Monomer Content of Two Denture Base Resins,” Quintessence International, Vol. 34, No. 2, 2003, pp. 148-153.
P. K. Vallittu, “Glass Fiber Reinforcement in Repaired Acrylic Resin Removeable Dentures: Preliminary Results of a Clinical Study,” Quintessence International, Vol. 28, 1997, pp. 39-44.
P. K. Vallittu, “Dimensional Accuracy and Stability of Poly Methylmethacrylate Reinforced with Metal Wire or with Con-tinuous Glass Fiber,” Journal of Prosthodontics, Vol. 75, No. 6, 1996, pp. 617-621. doi:10.1016/S0022-3913(96)90246-2
P. K. Vallittu and K. Narva, “Impact Strength of a Modified Continuous Glass Fiber Poly Methylmethacrylate,” International Journal of Prosthodontics, Vol. 10, 1997, pp. 142-148.
V. M. Miettinen and P. K. Vallittu, ”Water Sorption and Solubility of Glass Fiber-Reinforced Denture Polymethyl Methacrylate Resin,” Journal of Prosthetic Dentistry, Vol. 76, 1996, pp. 531-534.
S. Kondo, Y. Nodasaka and H. Shimokoube, “Bend Strength Properties of Jute Fiber-Reinforced Denture Base Material,” IADR/AADR/CADR 87th General Session and Exhibition, Miami, 1-4 April 2009.