Changes in roughness of denture base and reline materials by chemical disinfection or microwave irradiation: surface roughness of denture base and reline materials

Ana Lucia Machado, Eunice Teresinha Giampaolo, Carlos Eduardo Vergani, Juliana Feltrin de Souza, Janaina Habib Jorge, Ana Lucia Machado, Eunice Teresinha Giampaolo, Carlos Eduardo Vergani, Juliana Feltrin de Souza, Janaina Habib Jorge

Abstract

Objective: The effect of disinfection by immersion in sodium perborate solution and microwave irradiation on surface roughness of one denture base resin (Lucitone 550 -L), 3 hard chairside reline resins (Tokuyama Rebase II-TR, New Truliner-NT, Ufi Gel hard-UH) and 3 resilient reline materials (Trusoft-T; Sofreliner-S, Dentusil-D) was evaluated.

Material and methods: Thirty specimens of each material were made and divided into 3 groups: Control - not disinfected; P - daily disinfection by immersing in sodium perborate solution (3.8%); MW - microwave disinfection (6 min/650 W). Roughness measurements were made after polymerization (baseline) and after 1, 3 and 28 days. Roughness differences relative to the baseline readings were analyzed by Student's t-test (P=0.05).

Results: At baseline, Trusoft showed the highest (P<0.001) mean surface roughness (3.54 µm), and its surface roughness was significantly reduced after 28 days of disinfection by immersion in sodium perborate (P=0.013). Roughness measurements of material Trusoft were not performed after microwave disinfection due to the severe alterations on the surface. In the 3 groups evaluated, changes in roughness were significant for materials Ufi Gel hard (from 0.11 to 0.26 µm; P<0.041) and New Truliner (0.19 to 0.76 µm; P<0.019). The roughness of materials Lucitone 550 (0.37 µm), Tokuyama Rebase II (0.37 µm), Sofreliner (0.49 µm) and Dentusil (0.38 µm) remained unaffected (P>0.05).

Conclusions: The roughness of the hard reline materials Ufi Gel hard and New Truliner was adversely affected by microwave disinfection, immersion in water or in sodium perborate. Microwave disinfection caused severe alterations on the surface of the resilient liner Trusoft.

Figures

Figure 2
Figure 2
Trusoft material after microwave disinfection
Figure 3
Figure 3
Scanning electron microscopy (SEM) micrograph of material Trusoft after microwave disinfection
Figure 4
Figure 4
Scanning electron microscopy (SEM) micrograph of material Sofreliner after microwave disinfection

References

    1. Al-Athel M, Jagger R, Jagger D. Effect of ageing on the bond strength of a permanent denture soft lining material. J Oral Rehabil. 2002;29:992–996.
    1. Arima T, Murata H, Hamada T. The effects of cross-linking agents on the water sorption and solubility characteristics of denture base resin. J Oral Rehabil. 1996;23:476–480.
    1. Arima T, Murata H, Hamada T. Properties of highly crosslinked autopolymerizing reline acrylic resins. J Prosthet Dent. 1995;73:55–59.
    1. Azevedo A, Machado AL, Vergani CE, Giampaolo ET, Pavarina AC, Magnani R. Effect of disinfectants on the hardness and roughness of reline acrylic resins. J Prosthodont. 2006;15:235–242.
    1. Bal BT, Yavuzyilmaz H, Yücel M. A pilot study to evaluate the adhesion of oral microorganisms to temporary soft lining materials. J Oral Sci. 2008;50:1–8.
    1. Banting DW, Hill SA. Microwave disinfection of dentures for the treatment of oral candidiasis. Spec Care Dentist. 2001;21:4–8.
    1. Brosky ME, Pesun IJ, Morrison B, Hodges JS, Lai JH, Liljemark W. Clinical evaluation of resilient denture liners. Part 2: Candida count and speciation. J Prosthodont. 2003;12:162–167.
    1. Dar Odeh NS, Shehabi AA. Oral candidosis in patients with removable dentures. Mycoses. 2003;46:187–191.
    1. Davenport JC, Wilson HJ, Basker RM. The compatibility of tissue conditioners with denture cleaners and chlorhexidine. J Dent. 1978;6:239–246.
    1. Dinçkal Yanikoglu N, Yesil Duymus Z. Comparative study of water sorption and solubility of soft lining materials in the different solutions. Dent Mater J. 2004;23:233–239.
    1. Harrison Z, Johnson A, Douglas CW. An in vitro study into the effect of a limited range of denture cleaners on surface roughness and removal of Candida albicans from conventional heat-cured acrylic resin denture base material. J Oral Rehabil. 2004;31:460–467.
    1. Hong G, Murata H, Li Y, Sadamori S, Hamada T. Influence of denture cleansers on the color stability of three types of denture base acrylic resin. J Prosthet Dent. 2009;101:205–213.
    1. Jin C, Nikawa H, Makihira S, Hamada T, Furukawa M, Murata H. Changes in surface roughness and colour stability of soft denture lining materials caused by denture cleansers. J Oral Rehabil. 2003;30:125–130.
    1. Kazanji MN, Watkinson AC. Soft lining materials: their absorption of, and solubility in, artificial saliva. Br Dent J. 1988;165:91–94.
    1. Machado AL, Breeding LC, Puckett A. Effect of microwave disinfection on the hardness and adhesion of two resilient liners. J Prosthet Dent. 2005;94:183–189.
    1. McCabe JF, Murray ID, Kelly PJ. The efficacy of denture cleansers. Eur J Prosthodont Restor Dent. 1995;3:203–207.
    1. Murata H, Hamada T, Sadamori S. Relationship between viscoelastic properties of soft denture liners and clinical efficacy. Japan Dental Sci Rev. 2008;44:128–132.
    1. Murata H, Taguchi N, Hamada T, McCabe JF. Dynamic viscoelastic properties and the age changes of long-term soft denture liners. Biomaterials. 2000;21:1421–1427.
    1. Neppelenbroek KH, Pavarina AC, Palomari Spolidorio DM, Sgavioli Massucato EM, Spolidorio LC, Vergani CE. Effectiveness of microwave disinfection of complete dentures on the treatment of Candida-related denture stomatitis. J Oral Rehabil. 2008;35:836–846.
    1. Neppelenbroek KH, Pavarina AC, Vergani CE, Giampaolo ET. Hardness of heat-polymerized acrylic resins after disinfection and long-term water immersion. J Prosthet Dent. 2005;93:171–176.
    1. Nikawa H, Jin C, Makihira S, Egusa H, Hamada T, Kumagai H. Biofilm formation of Candida albicans on the surfaces of deteriorated soft denture lining materials caused by denture cleansers in vitro. J Oral Rehabil. 2003;30:243–250.
    1. Pavarina AC, Neppelenbroek KH, Guinesi AS, Vergani CE, Machado AL, Giampaolo ET. Effect of microwave disinfection on the flexural strength of hard chairside reline resins. J Dent. 2005;33:741–748.
    1. Quirynen M, Bollen CM. The influence of surface roughness and surface-free energy on supra- and subgingival plaque formation in man: a review of the literature. J Clin Periodontol. 1995;22:1–14.
    1. Radford DR, Challacombe SJ, Walter JD. Denture plaque and adherence of Candida albicans to denture-base materials in vivo and in vitro. Cr Rev Oral Biol Med. 1999;10:99–116.
    1. Radford DR, Sweet SP, Challacombe SJ, Walter JD. Adherence of Candida albicans to denture-base materials with different surface finishes. J Dent. 1998;26:577–583.
    1. Sartori EA, Schmidt CB, Walber LF, Shinkai RSA. Effect of microwave disinfection on denture base adaptation and resin surface roughness. Braz Dent J. 2006;17:195–200.
    1. Urban VM, Machado AL, Oliveira RV, Vergani CE, Pavarina AC, Cass QB. Residual monomer of reline acrylic resins. Effect of water-bath and microwave post-polymerization treatments. Dent Mater. 2007;23:363–368.
    1. Urban VM, Machado AL, Vergani CE, Giampaolo ET, Pavarina AC, Almeida FG, et al. Effect of water-bath post-polymerization on the mechanical properties, degree of conversion, and leaching of residual compounds of hard chairside reline resins. Dent Mater. 2009;25:662–671.
    1. Verran J, Maryan CJ. Retention of Candida albicans on acrylic resin and silicone of different surface topography. J Prosthet Dent. 1997;77:535–539.
    1. Viljanen EK, Langer S, Skrifvars M, Vallittu PK. Analysis of residual monomers in dendritic methacrylate copolymers and composites by HPLC and headspace-GC/MS. Dent Mater. 2006;9:845–851.

Source: PubMed

Спонсоры и соавторы

Заболевания

Медикаментозные вмешательства

Подписаться