EVALUATION OF RETENTION AND SURFACE ROUGHNESS OF DIFFERENT RETAINING MATERIALS IN IMPLANT-SUPPORTED OVERDENTURES - AN INVITRO STUDY

Dr Meer Saher Ataf, Dr Malathi Dayalan

Abstract


Implant-supported overdenture housings are retained in denture base with various types of materials. Inadequate adhesion between the housing and
the denture creates a gap that weakens the construct .Surface roughness contributes to plaque accumulation. This study was conducted to evaluate
the retention and surface roughness of materials used to retain the housings. 80 polymethyl methacrylate denture base specimens were fabricated
and divided into 4 groups depending on the retaining material used to retain the housings in denture base specimen: autopolymerizing acrylic resin
(GROUP A),composite resin (GROUP B), pattern resin (GROUP C) and heat polymerizing acrylic resin (GROUP D). SEM images were made to
inspect the PMMA denture base-retaining material-housing interfaces for any adhesive failure. The surface roughness of the retaining materials
was measured with a profilometer. Statistically significant differences were observed in terms of both retention and surface roughness. Within the
limitations of this study it was concluded that Pattern resin was most suitable in terms of both retention and surface roughness.


Keywords


Implant-supported Overdenture, Housing, Retaining Materials

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References


Mericske-Stern R, Zarb GA. Overdentures: an alternative implant methodology for edentulous patients. Int J Prosthodont 1993;6:203-8.

Burns DR, Unger JW, Elswick RK Jr, Beck DA. Prospective clinical evaluation of mandibular implant overdentures: Part I - Retention, stability, and tissue response. J Prosthet Dent 1995;73:354-63.

Dominici JT, Keith E, Kinderknecht KE, Clark EP. Clinical procedure for stabilizing and connecting O-ring attachments to a mandibular implant overdenture. J Prosthet Dent 1996;76:330-3.

Mutluay MM, Ruyter IE. Evaluation of adhesion of chairside hard relining materials to denture base polymers. J Prosthet Dent 2005;94:445-52.

Matsumura H, Tanoue N, Kawasaki K, Atsuta M. Clinical evaluation of a chemically cured hard denture relining material. J Oral Rehabil 2001;28:640-4.

Domingo KB, Burgess JO, Litaker MS, McCraken MS. Strength comparison of four techniques to secure implant attachment housings to complete dentures. J Prosthet Dent 2013;110:8-13.

Ozkir SE, Yilmaz B, Kurkcuoglu I, Culhaoglu A, Unal SM. Surface roughness and adaptation of different materials to secure implant attachment housings. J Prosthet Dent 2017;117(1):87-92.

Misch CE. Dental implant prosthetics. 2nd ed. St. Louis, MO: Elsevier Mosby; 2015.

Sarnat AE. The efficiency of cobalt samarium magnets as retention units for overdentures. J Dent 1983;11:324-33.

Jefferies SR, Boston DW, Damrow MP, Galbraith CT. Comparison of detachment forces of two implant overdenture attachment types: Effect of detachment speed. Am J Dent 2008;21(4):244-50.

Mericke-Stern R, Hofman J, Wedig A. In vivo measurements of maximum occlusal force and minimal pressure threshold on overdentures supported by implants or natural roots: a comparative study, Part I. Int Oral Maxillofac Implants 1993;8:641-49.

Anusavice KJ, Shen C, Rawls HR. Phillip’s Science of dental materials. 12th ed. Elsevier; 2013.

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.

Izumida FE, Jorge JH, Ribeiro RC, Pavarina AC, Moffa EB, Giampaolo ET. Surface roughness and Candida albicans biofilm formation on a reline resin after long-term chemical disinfection and toothbrushing. J Prosthet Dent 2014;112(6):1523-9.

Barnabé W, MendonçaNeto T, Pimenta FC, Pregoraro LF, Scolaro JM. Efficacy of sodium hypochlorite and coconut soap used as disinfecting agents in the reduction of denture stomatitis, Streptococcus mutans and Candida albicans. J Oral Rehabil 2004;31:453-9.

Berglundh T, Lindhe J, Marinello C, Ericsson I, Lilijenberg B. Soft tissue reaction to de novo plaque formation on implants and teeth: An experimental study in the dog. Clin Oral Implants Res 1992;3:1-8.

Bollen CM, Lambrechts P, Quirynen M. Comparison of surface roughness of oral hard materials to the threshold surface roughness for bacteria plaque retention: a review of the literature. Dent Mater 1997;13:258-69.


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