Determining the accuracy of stock and custom tray impression/casts. Alginate Impressions: A practical perspective. Retention of alginate impression material using a polyester fibre-mat textile. Retention strength of impression materials to a tray material using different adhesive methods. Marafie Y, Looney S, Nelson S, Chan D, Browning W, Rueggeberg F. Clinical evaluation of different pre-impression preparation procedures of dental arch.

2007.Īrora N, Arora M, Gupta N, Agarwal M, Verma R, Rathod P. GC Corporation, Tokyo: European Patent Office.

Dental Materials: foundations and applications. Physical properties and compatibility with dental stones of current alginate impression materials. Murata H, Kawamura M, Hamada T, Chimori H, Nikawa H. Effect of mixing methods on mechanical properties of alginate impression materials. It is concluded that tray adhesives are necessary to obtain accurate dental impressions with alginate and more accurate duplication of occlusal morphology can be achieved with the use of tray adhesive during impression making.ĭoubleday D. The accuracy of occlusal contacts was greater in samples resulting from impression using tray adhesive both in stock trays and custom impression trays. The occlusal contacts were significantly more accurate in samples resulting from impressions using alginate tray adhesive both in stock trays and custom impression trays than those without using tray adhesive ( P<0.05). The accuracy of occlusal contacts between samples with tray adhesive and without tray adhesive was compared for stainless steel stock trays and acrylic custom trays. The percentage of accurate occlusal contacts of mounted casts was determined by dividing the number of accurate contacts observed on the casts with total contact points clinically determined, multiplied by 100. The occlusal contacts of mounted opposing casts were also determined and recorded. Occlusal contact points at maximum intercuspation (MI) intra-orally were recorded by using articulating paper and images of occlusal contacts were taken. Alginate impressions were made in 20 dentate participants with or without the use of tray adhesive in stainless steel tray and acrylic custom tray and then the casts were poured in dental stone immediately. A study was conducted to investigate the effect of tray adhesive for alginate impression on accuracy of occlusal contacts of mounted stone casts. Among various factors contributing to inaccurate alginate impression, lack of adhesion to the tray is an important one. To achieve this goal, accurate impression is extremely important. Department of Prosthodontics, University of Dental Medicine, Mandalay, Myanmarĭepartment of Prosthodontics, University of Dental Medicine, Yangon, MyanmarĪlginate, impression, accuracy, tray, adhesives, occlusal contacts AbstractĪccurate occlusal contact relation is necessary for all restorations and devices in dentistry as correct diagnosis, proper treatment planning and perfect restoration ensure satisfactory chewing efficiency.

Tray adhesive for alginate