Evaluation of Bond Strength of Surface Conditioned Artificial Teeth with Modified and Valplast Denture Bases With Aging

Hikmat J Aljudy, Ali N Ahmad, Ihab N AlSafi


Background: bond failure of acrylic and porcelain teeth represents primary clinical disadvantages of partial and complete denture services provided to the patient. The aims of the study were to investigate the tensile and shear bond strength of two types of denture bases (heat cured reinforced with 5% ZrO2nano-fillers and valplast) with (acrylic and porcelain) teeth after ridge lap conditioning and using aging. The measurements were used for comparison with traditional denture base.
Materials and methods: denture bases reinforced with nano ZrO2 and valplast were bonded to acrylic and porcelain teeth. Samples were divided for shear and tensile strength. Each contains 5 samples. The ridge lap surface were conditioned by different treatments and then subjected to aging. Tensile and shear bond strength measured by instron testing device. The results were organized and evaluated by using analysis of variance (f-test) and t-test for comparison between subgroups.
Results: artificial teeth bonded to nano reinforced denture base required higher tensile and shear force to separate when compared with traditional heat cured and valplast resins. The mode of failure where cohesive either in the denture base or in the tooth itself when compared with valplast resin. Acrylic teeth conditioned with turpentine and porcelain with hydrofluoric acid express higher tensile and shear bond compared with unconditioned teeth. Aging sustained damaging effects on the bond strength of artificial teeth bonded to
valplast denture base in compared with nano reinforced and conventional heat cured.
Conclusions: tensile and shear bond strength of artificial teeth enhanced by the reinforcement of the resin with nano-sized fillers and by conditioning of the teeth ridge lap using chemical agents, making the bond stronger and durable to withstand fluctuated oral conditions.


Nano reinforced; valplast; porcelain teeth; turpentine; tensile bond strength

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Zukerman GR. A reliable method for securing anterior denture

teeth in denture bases.J Prosthet Dent.2003; 89:603-7.

Vallittu PK and Ruyter IE.Swelling of PMMAresin at the

repair joint.Int J Prosthodont. 1997; 10(3):254-58.

Cunningham JL,Benington IC.A survey of the pre-bonding

preparation of denture teeth and the efficiency of de-waxing

methods. J Dent. 1997; 25(2): 125-8.

Chai J, Takahashi Y, Takahashi T, Habu T. Bonding durability

of conventional resinous denture teeth and highly cross

linked denture teeth to a pour-type denture base resin.” Int.

J. Prosthodont. 2000; 13(2):112-6.

Huggett R, John G, Jagger RG, Bates JF. Strength of acrylic

denture base tooth bond. Br Dent J. 1982; 153(5):187-90.

el-Sheikh MM, Powers JM. Tensile bond strength of

porcelain teeth to denture resin before and after aging.Int J

Prosthodont. 1998; 11(1): 16-20.

Cunningham JL. Bond strength of acrylic teeth to denture

bases. J Dent. 1993; 21(5): 274-80.

Thean HP, Chew CL, Goh KI. Shear bond strength of denture

teeth to base: a comparative study. Quintessence Int.1996;

(6); 425-8.

Negrutiu M, Sinescu C, Romanu M, Pop D, Laktos S.

Thermoplastic resins for flexible framework removable

partial dentures. Temisoara Med J. 2005; 55: 295-9.

Atai M, Solhi L, Nodehi A, Mirabedini SM, Kasraei S,

Akbari K, Babanzadeh S. PMMA-grafted nanoclay as novel

filler for dental adhesives. Dent Mater. 2009; 25(3):339-47.

Saavedra G, Valandro LF, Leite FP, Amaral R, Ozcan M,

Bottino MA, Kimpara ET. Bond strength of acrylic teeth

to denture base resin after various surface conditioning

methods before and after thermocycling.Int J Prosthodont.

; 20(2): 199-201.

Gale MS, Darvell BW. Thermal cycling procedures for

laboratory testing of dental restorations. J Dent. 1999;


Takahashi Y, Chai J, Kawaguchi M. Effect of water sorption

on the resistance to plastic deformation of a denture base

material relined with four different denture reline materials.

Int J Prosthodont. 1998; 11(1):49-54.

Amin WM. Durability of acrylic tooth bond to polymeric

denture base resins. Eur J ProsthodontRestor Dent. 2002;


Neppelenbroek KH, Pavarina AC, Vergani CE, Giampaolo

ET.Hardness of heat-polymerized acrylic resins after

disinfection and long-term water immersion.JProsthet

Dent. 2005; 93(2):171-6.

J.I.S.T 6506 (1989):” Acrylic resin teeth.” Japanese Standard

Association, P: 16.

Rizgar MA. A Ph.D. thesis.The effect of addition of

radiopaque materials on some mechanical and physical

properties of flexible denture base.Department of Prosthetic

Dentistry, College of Dentistry, Hawler Medical University;

Ayad NM, Badawi MF, Fatah AA .Effect of reinforcement

of high impact acrylic resin with micro-Zirconia on some

physical and mechanical properties. Rev ClinPesqOdontol

; 4(3):145-51.

Shi J, Bao Y, Huang Z, Weng Z. Preparation of PMMANanomater

calcium carbonate composites by in-situ

emulsion polymerization. J Zhejiang University Sci. 2004;

(6): 709-13.

Anusavice KJ. “Phillip’s science of dental materials.”10th

Ed USA Philadelphia, WB, Saunders Co; 2008, p.: 211,

, 235, 237-271.

American Dental Association, Specification No. 57, (2000).

Chicago IL: ANSI/ADA.

Vergani CE, Machado AL, Giampaolo ET, Pavarina

AC.Effect of surface treatment on the bond strength

between composite resin and acrylic resin denture teeth.Int

J Prosthodont. 2000: 13(5): 383-6.

Schneider RL, Curtis ER, Clancy JM. Tensile bond strength

of acrylic resin denture teeth to a microwave- or heatprocessed

denture base.J Prosthet Dent. 2002; 88(2):145–


Delbert Trew. Coat oil was useful all-purpose home remedy.

Texas Escapes Online Magazine. Blue Prints for Travel,

LLC 2004; Ch4; P: 65.

Höland W, Schweiger M, Frank M, Rheinberger V. A

comparison of the microstructure and properties of the IPS

Empress 2 and the IPS Empress glass-ceramics. J Biomed

Mater Res. 2000; 53(4):297-303. (IVSL)

Garcia RM, Léon BT, Oliveira VB, Del BelCury AA. Effect

of denture cleanser on weight, surface roughness and tensile

bond strength of two resilient denture liners.JProsthet Dent.

; 89(5):489-94. (IVSL)

DOI: http://dx.doi.org/10.26477/idj.v37i3.56


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