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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.


Reunion of sections by brush bead method
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Figure 5: Reunion of sections by brush bead method

Mentions: In Group A, the open tray impression copings were screwed to the implant body at 15 Ncm torque. The open tray copings where splinted with dental floss (Oral B waxed dental floss, India). Autopolymerizing resin (GC pattern resin, Osaka, Japan) was mixed in the ratio of 2 g–1 ml. When the resin reached the dough stage, it was packed around the impression posts and the dental floss thus they were splinted together. The splint was allowed to polymerize for 4 min. The splint was then sectioned in-between the impression posts using a thin separating disc to relieve the stresses caused due to polymerization shrinkage. The cut sections were joined using the same resin by applying it using brush bead method [Figure 5]. This was again allowed to polymerize for 4 min. The impression copings, custom tray, and the splint were coated with polyether adhesive and allowed to dry for 15 min


Comparison of implant cast accuracy of multiple implant impression technique with different splinting materials: An in vitro study
Reunion of sections by brush bead method
© Copyright Policy - open-access
Related In: Results  -  Collection

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

Figure 5: Reunion of sections by brush bead method
Mentions: In Group A, the open tray impression copings were screwed to the implant body at 15 Ncm torque. The open tray copings where splinted with dental floss (Oral B waxed dental floss, India). Autopolymerizing resin (GC pattern resin, Osaka, Japan) was mixed in the ratio of 2 g–1 ml. When the resin reached the dough stage, it was packed around the impression posts and the dental floss thus they were splinted together. The splint was allowed to polymerize for 4 min. The splint was then sectioned in-between the impression posts using a thin separating disc to relieve the stresses caused due to polymerization shrinkage. The cut sections were joined using the same resin by applying it using brush bead method [Figure 5]. This was again allowed to polymerize for 4 min. The impression copings, custom tray, and the splint were coated with polyether adhesive and allowed to dry for 15 min

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.