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Comparison of implant cast accuracy of multiple implant impression technique with different splinting materials: An in vitro study

View Article: PubMed Central - PubMed

ABSTRACT

Introduction:: An accurate and passive fit of implant framework prosthesis, as well as the successful surgical operation is suggested as one of the critical requirements for long-term implant success.

Objective:: The purpose of this in vitro study was to evaluate the accuracy of the master cast using open tray impression technique with conventional and novel splinting materials.

Methodology:: A mandibular reference model with four ADIN implants was done. Ten custom trays were fabricated using the light curable resin sheets. Medium body polyether impression material was used. These trays were randomly divided between the two groups, with five trays in each group. Impression techniques were divided into two groups namely: Group A: Direct impression technique with open tray impression copings splinted with autopolymerizing acrylic resin (GC pattern resin). Group B: Direct impression technique with open tray impression copings splinted with Pro-temp TM 4 (bis-GMA) syringable temporization material. Thus, final impressions were made. Total of 10 master casts were fabricated. Evaluation of casts using Dynascope-Vision Engineering, TESA microhite two- dimension and coordinate measuring machine were used.

Results:: Statistical comparisons were made using ANOVA test and post-hoc test. Same amount of deviation values obtained with resin splinted and bis-GMA splinted impression copings.

Conclusion:: The master cast obtained by both the splinting material exhibits no difference from the reference model. So bis-GMA can be used, which is easy to handle, less time consuming, less technique sensitive, rigid, and readily available material in clinics.

No MeSH data available.


Reference wax model with four implants
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Figure 1: Reference wax model with four implants

Mentions: A reference wax model with four implants (ADIN Dental Implant System Ltd, Afula Israel.) in the mandibular anterior region in overdenture position A, B, D, and E was positioned using surveyor for the proper orientation [Figure 1]. The reference model mimics a mandibular implant-supported overdenture situation. Three stoppers, one in the anterior and two in the posterior region were made in the land area of the mandibular reference model, this ensures the proper orientation of the impression trays. Fabricated in clear heat cure acrylic resin (Triplex, Ivoclor, Vivadent) [Figure 2]. A preliminary cast was fabricated using indirect impression technique. In-order to obtain uniform spacer, 3 mm even spacer was adapted onto the primary cast and the impression made and spaced primary cast was obtained [Figure 3]. Ten custom trays (five per group) with windows in the anterior region were made using light cure acrylic resin sheets Sheet (Plaque Photo, W + P Dental, Hamburg, Germany) of 2 mm in thickness [Figure 4]. All the custom trays are uniformly spaced. To ensure dimensional stability of custom tray, the trays are left undisturbed for 24 h prior to impression making. The tray samples were divided randomly into two groups based on impression technique.


Comparison of implant cast accuracy of multiple implant impression technique with different splinting materials: An in vitro study
Reference wax model with four implants
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4837773&req=5

Figure 1: Reference wax model with four implants
Mentions: A reference wax model with four implants (ADIN Dental Implant System Ltd, Afula Israel.) in the mandibular anterior region in overdenture position A, B, D, and E was positioned using surveyor for the proper orientation [Figure 1]. The reference model mimics a mandibular implant-supported overdenture situation. Three stoppers, one in the anterior and two in the posterior region were made in the land area of the mandibular reference model, this ensures the proper orientation of the impression trays. Fabricated in clear heat cure acrylic resin (Triplex, Ivoclor, Vivadent) [Figure 2]. A preliminary cast was fabricated using indirect impression technique. In-order to obtain uniform spacer, 3 mm even spacer was adapted onto the primary cast and the impression made and spaced primary cast was obtained [Figure 3]. Ten custom trays (five per group) with windows in the anterior region were made using light cure acrylic resin sheets Sheet (Plaque Photo, W + P Dental, Hamburg, Germany) of 2 mm in thickness [Figure 4]. All the custom trays are uniformly spaced. To ensure dimensional stability of custom tray, the trays are left undisturbed for 24 h prior to impression making. The tray samples were divided randomly into two groups based on impression technique.

View Article: PubMed Central - PubMed

ABSTRACT

Introduction:: An accurate and passive fit of implant framework prosthesis, as well as the successful surgical operation is suggested as one of the critical requirements for long-term implant success.

Objective:: The purpose of this in vitro study was to evaluate the accuracy of the master cast using open tray impression technique with conventional and novel splinting materials.

Methodology:: A mandibular reference model with four ADIN implants was done. Ten custom trays were fabricated using the light curable resin sheets. Medium body polyether impression material was used. These trays were randomly divided between the two groups, with five trays in each group. Impression techniques were divided into two groups namely: Group A: Direct impression technique with open tray impression copings splinted with autopolymerizing acrylic resin (GC pattern resin). Group B: Direct impression technique with open tray impression copings splinted with Pro-temp TM 4 (bis-GMA) syringable temporization material. Thus, final impressions were made. Total of 10 master casts were fabricated. Evaluation of casts using Dynascope-Vision Engineering, TESA microhite two- dimension and coordinate measuring machine were used.

Results:: Statistical comparisons were made using ANOVA test and post-hoc test. Same amount of deviation values obtained with resin splinted and bis-GMA splinted impression copings.

Conclusion:: The master cast obtained by both the splinting material exhibits no difference from the reference model. So bis-GMA can be used, which is easy to handle, less time consuming, less technique sensitive, rigid, and readily available material in clinics.

No MeSH data available.