대한치과보철학회지 (The Journal of Korean Academy of Prosthodontics)

  • 제44권6호
  • /
  • Pages.712-721
  • /
  • 2006
  • /
  • 0301-2875(pISSN)
  • /
  • 2005-3789(eISSN)
대한치과보철학회 (The Korean Academy of Prosthodonitics)
권호 표지

A COMPARATIVE STUDY ON THE DIMENSIONAL CHANGE OF THE DIFFERENT DENTURE BASES

  • Kim, Myung-Joo (Department of Prosthodontics, Graduate School, Seoul National University) ;
  • Kim, Chang-Whe (Department of Prosthodontics, Graduate School, Seoul National University)
  • 발행 : 2006.12.31
PDF 다운로드
⟨ 이전 논문 다음 논문 ⟩

초록

Statement of problem. Acrylic resin is most commonly used for denture bases. However, acrylic resin has week points of volumetric shrinkage during polymerization that reduces denture fit. The expandability of POSS (Polyhedral Oligomeric Silsesquioxane) containing polymer could be expected to reduce the polymerization shrinkage of denture bases and would increase the adaptability of the denture to the tissue. Purpose. The purpose of this study was to compare the dimensional stability in the conventional acrylic resin base, POSS-containing acrylic resin base, and metal bases. Materials and methods. Thirty six maxillary edentulous casts and dentures of different base were fabricated. Tooth movement and tissue contour change of denture after processing (resin curing, deflasking, decasting and finishing without polishing) and immersion in artificial saliva at $37^{\circ}C$ for 1 week and 4 weeks were measured using digital measuring microscope and threedimensional laser scanner. Results. The results were as follows: 1. The conventional resin group showed significant (p<0.01) dimensional change throughout the procedure (processing and immersion in artificial saliva). 2. After processing, the metal group and POSS resin group showed lower linear and 3-dimensional change than conventional resin group (p<0.01). 3. There was no statistically significant linear and 3-dimensional change after immersion for 1 week and 4 weeks in metal and POSS resin group. 4. In all groups, the midline and alveolar ridge crest area presented smaller 3-dimensional change compared with vestibule and posterior palatal seal area after processing and soaking in artificial saliva for 1 week and 4 weeks (p<0.01). Conclusion. In this study, a reinforced acrylic-based resin with POSS showed good dimensional stability.

키워드

참고문헌

  1. Winkler S. Denture base resins. Dent Clin North Am 1984;28:287-297
  2. de Gee AJ, ten Hakel EC, Davison CL. Measuring procedure for the determination of the three-dimensional shape of dentures. J Prosth Dent 1979;4:149-153
  3. Woefel JB. Processing complete dentures. Dent Clin North Am 1977,21:329-338
  4. Jagger DC, Harrison A, Jandt KD. Review -The reinforcement of dentures. J Oral Rehabil 1999;26:185- 94 https://doi.org/10.1046/j.1365-2842.1999.00375.x
  5. Takamata T, Setocos JC. Resin denture bases: Review of accuracy and methods of polymerization. Int J Prosthodont 1989;2:555-562
  6. Baemmert RJ, Lang BR, BarconMT, Billy EJ. The effects of denture teeth on the dimensional accuracy of acrylic resin denture bases. Int J Prosthodont 1990;3:528-537
  7. Chow TW. A study of reinforcement of dental polymers with ultral high molecular polyethylene fibers. PhD thesis, Univ of London. 1996
  8. Vallitu PK. Effect of some properties of metal strengtheners on the fracture resistance of acrylic denture base material. J Oral Rehab 1993;20:241-248 https://doi.org/10.1111/j.1365-2842.1993.tb01606.x
  9. Vallitu PK, Lassila VP, LAppalainen R. Acrylic resin fiber composite. Part 1: The effect of fiber concentration on fracture resistance. J Prosthet Dent 1994;71:607-612 https://doi.org/10.1016/0022-3913(94)90446-4
  10. Kaine T, Fujii K, Arikawa H, Inoue K. Flexural properties and impact strength of denture base polymer reinforced with woven glass fibers. Dent Mater 2000;16:150-8 https://doi.org/10.1016/S0109-5641(99)00097-4
  11. Nam KW, Chang MW, Chang BS, Han DH, Shim JS, Chang IK, Heo SJ, An JH, Chung DJ. Development of the reinforced acrylic-based hybrid denture composite resin with vinyloligosilsesquioxane( POSS). J Kor Acad Prosthodont 2000;38:782-790
  12. Schwab JJ, Lichtenhan JD. Polyhedral oligomeric silsesquioxane (POSS)-based polymers. Appl Organometal Chem 1998;12:707-713 https://doi.org/10.1002/(SICI)1099-0739(199810/11)12:10/11<707::AID-AOC776>3.0.CO;2-1
  13. Lichtenhan JD. Polyhedral oligomeric silsesquioxanes: building blocks for silsesquioxane-based polymers and hybrid materials. Comment Inorg Chem 1995:17:115-30 https://doi.org/10.1080/02603599508035785
  14. Kim SK. Cytotoxicity of denture base resins. PhD thesis, Seoul National Univ. 2001
  15. Philips RW. Skinners science of dental materials. 9TH ed. Philadelphia: WB saunders, 1991:177- 213
  16. Zissis A, Huggett R, Harrison A. Measurement methods used for the determination of dimensional accuracy and stability of denture base material. J Den 1991;19:199-206 https://doi.org/10.1016/0300-5712(91)90116-G
  17. Sykora O, Sutow EJ. Improved fit of maxillary complete dentures processed on high expansion stone casts. J Prosthet Dent 1997;77:205-208 https://doi.org/10.1016/S0022-3913(97)70236-1
  18. Johnson DL, Duncanson JM Jr. The plastic postpalatal denture seal/ Quentessence Int 1987;18:457- 462
  19. Jow J. Mechanical undercuts as a means of decreasing shrinkage un the postpalatal seal region of the maxillary denture. J Prosthet Dent 1989;62:110- 115 https://doi.org/10.1016/0022-3913(89)90054-1
  20. Firtell DN, Green AJ, Elahi JM. Posterior peripheral seal distortion related to processing temperature. J Prosthet Dent 1981;45:598-601 https://doi.org/10.1016/0022-3913(81)90418-2
  21. Polyzois GL,Karkazis HC, Zissis AJ, Demetriou PP. Dimensional stability of dentures processed in boilable acrylic resins: A comparative study. J Prosthet Dent 1989;57:639-647
  22. Haddad TS, Lichtehan JD. Hybrid organic-inorganic thermoplastic styryl base polyhedral oligomeric sidseqioane (POSS)molecules. Macromolecules. 1996;7302-7305
  23. Campell RL. Effects of water sorption on retention of acrylic resin denture bases. J Am Dent Assoc 1956;13:269-282
  24. Gao F, Tong Y, Schricker SR, Culbertson BM. Evaluation of neat resins based on methacrylates modified with methacryl-POSS, as potential organicinorganic hybrids for formulating dental restoratives. Polym Adv Technol 2001;12:355-60 https://doi.org/10.1002/pat.117
  25. Fong H, Dickens SH, Flaim GM. Evaluation of dental restorative composites containing polyhedral oligomeric silsesquioxane methacrylate. Dent Mater 2005;21:520-9 https://doi.org/10.1016/j.dental.2004.08.003