Strength and Surface Roughness of Cross Linking Acrylic Resin Processed by Different Heat Curing Methods

Ali Ehsan Kareem

Abstract


Background: Heat-cured acrylic resin is considered one of the most commonly used denture base material in denture construction,
but this material is not ideal in every respect. So many researches have been carried out to find an alternative material like cross
linking acrylic resin. Meanwhile, the curing procedures have been modified to improve the physical and mechanical properties of
resin materials .The aim of this study was to evaluate the effect of three curing methods:(water bath, autoclave short cycle and
autoclave long cycle) on transverse strength, tensile strength and surface roughness of cross linking acrylic denture base materials.
Material and method: Cross linking acrylic resin was used in this study and processed in three curing methods (water bath, autoclave
short cycle and autoclave long cycle). Ninety specimens were prepared. Each main group was subdivided into three subgroups
according to the type of test used (transvers strength test, tensile strength test and surface roughness test). Each group
contained 10 specimens for each test.
Result: Three tests were used to analyze the results: analysis of variance (ANOVA), the least significant difference (LSD) and an
independent T-test. There were no significant differences between the results of the processing techniques regarding transverse
and tensile strength but there was a significant difference between the results of surface roughness tests.
Conclusion: It was concluded that autoclave curing method can be used with different duration whether it is short or long instead
of water bath curing method.


Keywords


Cross linking acrylic resin; autoclave; water bath; strength; roughness.

Full Text:

PDF

References


Pryor WJ Methods of producing more life like dentuers,

including the preparation and processing of acrylic

resins.J. Am. Associ, 1941; 28(6): 894-898.

Wilson HJ, Mansfield MA, Health JR and Spence S Dental

technology and materials. 8th ed. Oxford: Black well

Scientific Publication; 1987: 312-23, p372.

Powers JM and Sakaguchi RL Craig’s Restorative dental

materials.13th Ed.Philadelphia, PA Mosby Co., 2012; Ch.8,

Ch.9.

Craig RG and Powers JM Restorative dental materials.11th

Ed. St. Louis Mosby Co., 2002; Ch.21.

Anusivice KJ Philips Science of dental material 10th edition,

WB Saunders Co. Philadelphia. 1996.

Jagger DC, Jagger RG, Allen SM and Harrison A An

investigation into the transverse and impact strength

of high strength denture base acrylic resins. J. of Oral

Rehabilitation, Blackwell Science Ltd. 2002; 29: 263-267 .

Meng TR and Latta MA Physical properties of four acrylic

denture base resin.J.Contem. Dent. Pract. 2005; 6(4): 93-

Arena CA, Evan DB and Hilton TJ Acomparison of bond

strengths among chair side hard reline materials. J. Pros.

Dent. 1993; 70(2): 126-131.

Kawara M, Komiyama D, KimotosKobayshi N, Kobayshi

K and Kemoto K Distortion behavior of heat activated

acrylic denture base resin in conventional and long lowertemperature

processing method. J. Dent. Res. 1988; 77(6):

-1453.

Cuningham JL Shear bond strength of resin teeth to heat

cured and light cured denture base resin. J. Oral. Rehab.

; 27: 312-316.

Jagger DC, Harrison A And Jand TK The reinforcement of

dentures. J. Oral Rehabil, 1999; 26: 185-194.

Johastone ER, Nichols JI and Smith D E Flexural fatigue of

commonly used denture base resin. J. Pros. Dent. 1981;

: 478-483.

Carroll CE and Von Fraunhofer JA Wire reinforcement of

acrylic resin prosthesis.”J.Pros. Dent. 1984; 52: 639-641.

Rodford RA The development and evaluation of high impact

strength denture base material. J. of Dental Research. 1986;

:124-157.

Harrison A, Huggett R and Jagger RC The effect of cross

linking agent on abrasion resistance and impact strength

of an acrylic resin denture base material. J. Dent. 1978; 6:

-304.

Hill RG The cross linking agent ethylene glycol

dimethacrylate content of the currently available acrylic

denture base resin. J. Dent. Res.1981; 60(3): 725-726

Craig RG Restorative dental materials.10th Ed. St. Louis

Mosby Co., 1997: 127-136, 500-540.

Azzari MJ,Cortizo MS and Alessandrini JL Effect of the

curing conditions on the properties of an acrylic denture

base resin microwave polymerized. J. Dent. 2003; 31: 463-

Banerjee R, Banerjee S, Prabhudesai PS and BhideSV

Influence of the processing technique on the flexural

fatigue strength of denture base resins An in vitro

investigation. Indian Dent Assoc. 2010; 21: 391-5.

Sidhaye AB Polymerization shrinkage of heat cured

acrylic resins processed under steam pressure. Indian Dent

Assoc.1981; 53: 49-51.

Undurwade JH and Sidhaye AB Curing acrylic resin in a

domestic pressure cooker: A study of residual monomer

content. Quintessence Int.1989; 20(2): 123-129.

Takamta T, Setcos JC, Philips RW, and Boone ME Adaptation

of acrylic resins dentures as influenced by the activation

mode of polymerization. J. American Dental Associ. 1989;

(2): 271-276.

Sadamori S, Ganefiyanti T, Hamada T, and Arima T Content

of denture base cured by three processing methods. J.

prosthet. Dent. 1994; 72: 19-22.

Salwan SA The effect of autoclave processingon some

properties of heat cured denture base materials. A master

thesis, College of dentistry, Baghdad University, 2012.

American Dental Association Specification No.12 Guide to

dental materials and devices.1999; 10th Ed., Chicago, P: 32.

Salem SA Reinforced denture base material. Ph. D. Thesis.

University of Manchester,1979

Judelson HS Operation of the autoclaves. ,An excellent

overview of autoclave operation posted by Dr. Howard

Judelson at University of California at Riverside.2004

Oyawale, FA and OlaoyeAE Design and Construction of an

Autoclave. Pacific Journal of Science and Technology. 2007;

(2) :224-230.

Anusavice KJ Phillips’s sciences of dental materials. 11thEd.

Saunders Co. Philadelphia, 2007: 162-169.

Walker KA, Morkoski LJ and Deeter GA Crosslinking

chemistry for high- performance polymer network.

Polymer. 1994; 35: 5012-7

DurkanR,Ozel MB, Bagis B and UsanmazA In vitro,

Comparison of autoclave polymerization on the transverse

strength of denture base resins. Dental Materials J. 2008;

(4): 640-642.

O’Brien WJ and Ryge. An outline of dental materials and

their selection.1978, Philadelphia, London.

Radford DR, Sweet SP, Challacombes and Walter JD

Adherence of candida albicans to denture base materials

with different surface finishes. J Dent; 1998; 26: 577-583.

Quirynen M, Marechal M, Busscher HJ, Weerkamp AH,

Darius PL and Van Steenberghe D The influence of surface

free energy and surface roughness on early plaque

formation: an in vivo studyin man. J ClinPeriodontol 1990;

: 138-144.

Ravnholt G and Kabber S Surface roughness of oral mucosa

and its reproduction in dental materials. J Dent 1994; 22:

-174.

Craig RG Restorative Dental Materials. 11th ed. St Louis,

MO: Mosby; 2002: 87-88

Manappallila JJ Basic dental materials.2nd edition ch8,

ch20, 2007:99-142, 346-377. New Delhi

Manar NY Nazhat, Tariq.YQ Basshi Amer.A Taqa An

Autoclave Effect on the Powder of Poly Methylmethacrylate.

International journal of dental sciences and research 2014;

(3).




DOI: http://dx.doi.org/10.26477/idj.v37i1.34

Refbacks

  • There are currently no refbacks.




--------------------------------------------------------------------------------------------

Copyright by Iraqi Dental Journal

ISSN (Print): 2307-4779 | ISSN (Online): 2411-9741