Biomaterial Database

Cavity wall adaptation and voids in adhesive Class I resin composite restorations. 1996

N J Opdam, and J J Roeters, and T C Peters, and R C Burgersdijk, and M Teunis

TRIKON: Institute for Dental Clinical Research, University of Nijmegen, The Netherlands. carendo@dent.kun.nl

OBJECTIVE Handling characteristics and adaptation modes of resin composites are important factors to achieve proper placement of the restorative materials. The present study was undertaken to assess the influence of the consistency of composite materials and the mode of application on voids and porosities in Class I adhesive restorations. METHODS One hundred medium-sized Class I preparations with an adhesive design were restored with three composites of various consistencies using three different application modes. The restorations were sectioned, and each section of a restoration was inspected for the presence of voids. The total surface and the percentage of the cavity wall occupied by voids as well as the total number of voids in the sections were recorded. A Krusal-Wallis analysis of variance was carried out on the data. Differences between individual composite materials for each mode of application and between individual application modes for each composite material were analyzed using a Mann-Whitney U-test at p < 0.05. RESULTS The injection technique with a Hawe Neos Centrix tip was the best mode of application. Both smearing and the condensation of composites appeared to produce unreliable results. Furthermore, there were more problems with voids and wall adaptation for the thicker-consistency composite than for the medium- and thin-consistency material. CONCLUSIONS The thick-consistency composite had more problems related to voids and wall adaptation than the medium- and thin-consistency composites.

UI	MeSH Term	Description	Entries
D008963	Molar	The most posterior teeth on either side of the jaw, totaling eight in the deciduous dentition (2 on each side, upper and lower), and usually 12 in the permanent dentition (three on each side, upper and lower). They are grinding teeth, having large crowns and broad chewing surfaces. (Jablonski, Dictionary of Dentistry, 1992, p821)	Molars
D003188	Composite Resins	Synthetic resins, containing an inert filler, that are widely used in dentistry.	Composite Resin,Resin, Composite,Resins, Composite
D003763	Dental Leakage	The seepage of fluids, debris, and micro-organisms between the walls of a prepared dental cavity and the restoration.	Dental Leakages,Leakage, Dental,Leakages, Dental
D003793	Dental Restoration, Permanent	A restoration designed to remain in service for not less than 20 to 30 years, usually made of gold casting, cohesive gold, or amalgam. (Jablonski, Dictionary of Dentistry, 1992)	Dental Fillings, Permanent,Dental Filling, Permanent,Dental Permanent Filling,Dental Permanent Fillings,Dental Restorations, Permanent,Filling, Dental Permanent,Filling, Permanent Dental,Fillings, Dental Permanent,Fillings, Permanent Dental,Permanent Dental Filling,Permanent Dental Fillings,Permanent Dental Restoration,Permanent Dental Restorations,Permanent Filling, Dental,Permanent Fillings, Dental,Restoration, Permanent Dental,Restorations, Permanent Dental
D004867	Equipment Design	Methods and patterns of fabricating machines and related hardware.	Design, Equipment,Device Design,Medical Device Design,Design, Medical Device,Designs, Medical Device,Device Design, Medical,Device Designs, Medical,Medical Device Designs,Design, Device,Designs, Device,Designs, Equipment,Device Designs,Equipment Designs
D005069	Evaluation Studies as Topic	Works about studies that determine the effectiveness or value of processes, personnel, and equipment, or the material on conducting such studies.	Critique,Evaluation Indexes,Evaluation Methodology,Evaluation Report,Evaluation Research,Methodology, Evaluation,Pre-Post Tests,Qualitative Evaluation,Quantitative Evaluation,Theoretical Effectiveness,Use-Effectiveness,Critiques,Effectiveness, Theoretical,Evaluation Methodologies,Evaluation Reports,Evaluation, Qualitative,Evaluation, Quantitative,Evaluations, Qualitative,Evaluations, Quantitative,Indexes, Evaluation,Methodologies, Evaluation,Pre Post Tests,Pre-Post Test,Qualitative Evaluations,Quantitative Evaluations,Report, Evaluation,Reports, Evaluation,Research, Evaluation,Test, Pre-Post,Tests, Pre-Post,Use Effectiveness
D006801	Humans	Members of the species Homo sapiens.	Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D014783	Viscosity	The resistance that a gaseous or liquid system offers to flow when it is subjected to shear stress. (From McGraw-Hill Dictionary of Scientific and Technical Terms, 6th ed)	Viscosities
D016062	Porosity	Condition of having pores or open spaces. This often refers to bones, bone implants, or bone cements, but can refer to the porous state of any solid substance.	Porosities
D017438	Bisphenol A-Glycidyl Methacrylate	The reaction product of bisphenol A and glycidyl methacrylate that undergoes polymerization when exposed to ultraviolet light or mixed with a catalyst. It is used as a bond implant material and as the resin component of dental sealants and composite restorative materials.	Bis-GMA,Bis-GMA Polymer,2-Propenoic acid, 2-methyl-, (1-methylethylidene)bis(4,1-phenyleneoxy(2-hydroxy-3,1-propanediyl)) ester, homopolymer,Adaptic,Bis(Phenol A-Glycidyl Methacrylate),Bis(Phenol A-Glycidyl Methacrylate), Homopolymer,Bis(Phenol A-Glycydyl Methacrylate),Bis-GMA Resin,Bisphenol A-Glycidyl Methacrylate Homopolymer,Bisphenol A-Glycidyl Methacrylate Polymer,Concise Composite Resin,Concise Enamel Bond,Concise Enamel Bond System,Concise Resin,Concise White Sealant,Conclude Composite Resin,Conclude Resin,Delton,Epoxylite-9075,Kerr Pit and Fissure Sealant,Kerr Sealer,Nuva-Seal,Panavia Opaque,Poly(Bis-GMA),Retroplast,Silux,Bis GMA,Bis GMA Polymer,Bis GMA Resin,Bis-GMA Polymers,Bis-GMA Resins,Bisphenol A Glycidyl Methacrylate,Bisphenol A Glycidyl Methacrylate Homopolymer,Bisphenol A Glycidyl Methacrylate Polymer,Bond, Concise Enamel,Composite Resin, Concise,Composite Resin, Conclude,Composite Resins, Concise,Concise Composite Resins,Concise Resins,Enamel Bond, Concise,Epoxylite 9075,Epoxylite9075,Methacrylate, Bisphenol A-Glycidyl,Nuva Seal,NuvaSeal,Opaque, Panavia,Polymer, Bis-GMA,Polymers, Bis-GMA,Resin, Bis-GMA,Resin, Concise,Resin, Concise Composite,Resin, Conclude,Resin, Conclude Composite,Resins, Bis-GMA,Resins, Concise,Resins, Concise Composite