Journal of Technologic Dentistry (대한치과기공학회지)

Korean Academy of Dental Technology (대한치과기공학회)
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Comparative evaluation of flexural strength and modulus of denture base resin with mesh and stick type glass fiber reinforcement

망사 및 스틱 형태의 유리섬유 보강재를 삽입한 의치상용 레진의 굴곡강도 및 굴곡계수 비교 평가

  • Kim, Dong-Yeon (4RD Dental Laboratory) ;
  • Kim, Jae-Hong (Department of Dental Laboratory Science, College of Health Science, Catholic University of Pusan)
  • 김동연 (폴드 치과기공소) ;
  • 김재홍 (부산가톨릭대학교 보건과학대학 치기공학과)
  • Received : 2020.03.24
  • Accepted : 2020.06.22
  • Published : 2020.06.30
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Abstract

Purpose: This study is to compare the flexural strength and modulus by inserting a mesh and stick type fiberglass reinforcement into resin specimens. Methods: Wax specimens (length 64 mm, width 39 mm, thickness 5 mm) are prepared according to ISO 20795-1:2013. Mesh type and stick type glass fiber reinforcements were prepared. The prepared wax specimens were used plaster and flask for investment. The flask was separated and the wax was removed. The heat curing resin was injected into the flask, and then a mesh type and stick type fiberglass reinforcement were inserted. The prepared resin specimen was cut into three equal parts (length 64 mm, width 10 mm, thickness 3.3 mm). The mesh type glass fiber reinforcement (MT group) and the stick type glass fiber reinforcement (ST group) were classified into two groups. The prepared specimen was measured using a universal testing machine (UTM). The data were analyzed by Mann-Whitney U test, and the significance level was set to 0.05. Results: In the flexural strength, the ST group was higher than the MT group, and there was a significant difference between the two groups (p<0.05). In the flexural modulus, the ST group was higher than the MT group, and there was a significant difference between the two groups (p<0.05). Conclusion: The stick-type glass fiber inreased the flexural strength than the mesh-type glass fiber reinforcement.

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References

  1. Choi YJ, Koak JY, Heo SJ, Kim SK, Ahn JS, Park DS. Comparison of the mechanical properties and microstructures of fractured surface for Co-Cr alloy fabricated by conventional cast, 3-D printing lasersintered and CAD/CAM milled techniques. J Korean Acad Prosthodont, 52, 67-73, 2014. https://doi.org/10.4047/jkap.2014.52.2.67
  2. Choudhary S. Complete denture fracture-a proposed classification system and its incidence in national capital region population: A survey. J Indian Prosthodon Soc, 19, 307-312, 2019. https://doi.org/10.4103/jips.jips_312_18
  3. Hargreaves AS. The prevalence of fractured dentures. A survey. Br Dent J, 126, 451-455, 1969.
  4. Hari PA, Kalavathy, Mohammed HS. Effect of glass fiber and silane treated glass fiber reinforcement on impact strength of maxillary complete denture. Ann Essence Dent, 3, 7-12, 2011.
  5. International Standard. ISO 20795-1 for Dentistry-Base polymers-Part1: denture base polymers. Geneve, Switzerland: International Organization for Standardization: 2013.
  6. Jeong CM. A comparative study on the several metal reinforcement methods of maxillary complete acrylic resin denture base. J Korean Acad Prosthodont, 34, 363-372, 1996.
  7. Jin SE, Cho IH. The effect of glass fiber reinforcing materials and thermocycling on the transverse strength of denture base resin. J Dent Rehab App Sci, 29, 327-336, 2013. https://doi.org/10.14368/jdras.2013.29.4.327
  8. Kim CM, Kim JH, Kim HY, Kim WC. Strengthening effect of resin denture base by glass fiber reinforcement addition. J Korean Acad Dent Tech, 36, 1-7, 2014a. https://doi.org/10.14347/kadt.2014.36.1.1
  9. Kim DY, Jung Il-Do, Park JY, Kang SY, Kim JH, Kim WC. Accuracy evaluation of resin complete denture made with glass fiber mesh reinforcement before and after curing. J Korean Acad Dent Tech, 39, 25-33, 2017.
  10. Kim DY, Park JY, Bae SY, Kang HW, Kim JH, Kim WC. Evaluation of fitness according to application of glass fiber reinforcement for lower jaw complete denture. J Korean Acad Dent Tech, 40, 201-207, 2018.
  11. Kim JW, Kim HJ, Chung CH. Fabrication of complete denture with glass fiber framework. Oral Biol Res, 38, 112-117, 2014b. https://doi.org/10.21851/obr.38.2.201410.112
  12. Polyzois GL, Andreopoulos AG, Lagouvardos PE. Acrylic resin denture repair with adhesive resin and metal wires: effects on strength parameters. J Prosthet Dent, 75, 381-387, 1996. https://doi.org/10.1016/S0022-3913(96)90029-3
  13. Takahashi Y, Yoshida K, Shimizu H. Effect of location of glass-fiber-reinforced composite reinforcement on the flexural properties of a maxillary complete denture in vitro. Acta Odontol Scand, 69, 215-221, 2011. https://doi.org/10.3109/00016357.2010.549506
  14. Vallittu PK, Lassila VP, Lappalainen R. Transverse strength and fatigue of denture acrylicglass fiber composite. Dent Mater, 10, 116-121, 1994. https://doi.org/10.1016/0109-5641(94)90051-5
  15. Yazdanie N, Mahood M. Carbon fiber acrylic resin composite: An investigation of transverse strength. J Prosthet Dent, 54, 543-547, 1985. https://doi.org/10.1016/0022-3913(85)90431-7
  16. Yli-Urpo A, Lappalainen R, Huuskonen O. Frequency of damage to and need for repairs of removable dentures. Proc Finn Dent Soc, 81, 151-155, 1985.
  17. Yu SH, Kim YS, Choi UJ, Jun JN. Effect of reinforcement of glass fiber on auto and heat polymerized denture base resin. J Korean Acad Dent Tech, 31, 295-301, 2009.
  18. Yu SH, Oh SH, Bae JM. Reinforcing effect of glass fiber mesh with different content and structures on autopolymerized pour-type denture base resin. Korean J Dent Mater, 41, 59-65, 2014. https://doi.org/10.14815/kjdm.2014.41.1.59