Accuracy of impressions with different impression materials in angulated implants

Reddy, Subash M.; Prasad, K V V; Vakil, H; Jain, Arihant; Chowdhary, Ramesh

doi:10.4103/1119-3077.113447

Cited by 19 publications

(6 citation statements)

References 23 publications

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“…[ 26 ] The gingival health was checked using periodontal probe before every gingival displacement. [ 27 ] It has been reported in previous studies[ 27 28 ] that the health of the gingival tissue returns to optimum when examined after 8 days of gingival displacement.…”

Section: Discussionmentioning

confidence: 99%

Comparative evaluation of three gingival displacement materials for efficacy in tissue management and dimensional accuracy

Gajbhiye

Banerjee

Jaiswal

et al. 2019

J Indian Prosthodont Soc

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Aim: Displacement of gingiva is essential for obtaining accurate impressions for the fabrication of fixed prostheses, particularly when the finish line is at or within the gingival sulcus. Various newer impression materials have been introduced to achieve gingival displacement while recording the impressions. A comparative evaluation of these new gingival displacement materials was deemed necessary for efficacy in tissue management and dimensional accuracy. Materials and Methods: Ten individuals were selected according to the inclusion and exclusion criteria for gingival displacement using retraction cord impregnated with aluminum chloride and two polyvinyl siloxane impression materials (Aquasil and NoCord VPS impression system) according to Latin block design. Intraoral scanner and Vernier caliper were used to study and compare the dimensional accuracy of each die obtained following which the dies were sectioned and evaluated under optical microscope with image analyzer to measure the amount of gingival retraction. Results and Conclusion: Statistical analysis showed that the amount of gingival retraction obtained by using retraction cord impregnated with aluminum chloride as gingival retraction agent was maximum as compared to NoCord followed by Aquasil. All three gingival displacement techniques could produce gingival displacement >0.2 mm which is the optimum amount of retraction required for impression making. All the three materials are found to be dimensionally accurate.

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Section: Discussionmentioning

confidence: 99%

Comparative evaluation of three gingival displacement materials for efficacy in tissue management and dimensional accuracy

Gajbhiye

Banerjee

Jaiswal

et al. 2019

J Indian Prosthodont Soc

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“…Studies by Reddy, Karl showed little or no difference between polyether and polyvinyl siloxane when using a direct technique , . 30,31 Considering rotational transfer precision of implants in the present study, it was conceived that with direct (open tray) impression technique, polyether result in less discrepancy compared to polyvinyl siloxane. We 32 reported that for completely edentulous multipleimplant restorations, the use of polyether showed the best results .…”

Section: Discussionmentioning

confidence: 96%

Comparative evaluation of linear dimensional accuracy of impressions made with different elastomeric impression materials (Polyether and Polyvinyl siloxane) in angulated and parallel implants-An invitro study

Paul

Barman²,

Goswami³

2023

IJMI

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To date no technique has been proven to guarantee a completely passive fit of implant supported prosthesis framework. Several clinical variables such as angulation of implants, impression material and technique used may affect the precision of impressions. Hence, this study is designed to evaluate and compare the dimensional accuracy of the resultant casts made from open tray implant level impressions with two different impression materials (polyvinyl siloxane and polyether) in parallel and angulated implants. The study consisted of two control groups; master model –1with parallel implants and master model –2 with angulated implants. From master model 1and master model 2, total 40 implant level open tray impressions were made using PVS and polyether impression material and impressions were poured to obtain 40 study casts. The resultant casts were divided into 4 groups (10 casts in each group), according to the impression material used (PVS or Polyether) and implant’s orientation (parallel or angulated) in the casts. All casts were evaluated for the positional accuracy of the implant by using four reference distances with the help of a profile projector. These measurements were compared to the measurements calculated on the master model, which served as a control. The variations of the mean distance values with respective control values within a group were analyzed with one samples’ t’ test at 0.05 significance level. Further the mean distance variations between the groups were analyzed with independent samples ‘t’ test to evaluate group mean variations.The impressions made in the presence of angulated implants were significantly less accurate than the ones made with parallel implants. Regarding impression material the tested polyether resulted advantageous over polivinylsiloxane impression material in terms of recording positional accuracy of implants.

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“…[ 11 ] advised open-tray impression technique and PE and PVS imprint materials for precise results, Reddy et al . [ 12 ] discovered comparable dimensional accuracy for transfer techniques.…”

Section: Discussionmentioning

confidence: 99%

Evaluation of Dimensional Change in Different Elastomeric Impression Materials Used in Implants: An Original Research

Rajput,

Baranikrishnan,

Mansoor

et al. 2024

Journal of Pharmacy and Bioallied Sciences

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Aim: The study’s objective was to assess the dimensional accuracy of hybrid polyether and polyvinyl siloxane materials for implant impressions. Materials and Methods: Nine groups were created from 45 samples of various building materials and construction techniques from the study. Five samples were tested, and 45 impressions were recorded. Results: The hybrid non-splinted technique has improved implant site replication, accuracy, and low interimplant distance alterations. Conclusion: The finest possible reproduction of implant sites on the master cast was made feasible by the use of an open, non-splinted method and a hybrid polyvinyl siloxane–polyether impression material.

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Accuracy of impressions with different impression materials in angulated implants

Abstract: On the basis of the results of this study, the use of both the impression materials i.e., polyether and polyvinyl siloxane impression is recommended for impression making in parallel as well as angulated implants.

Cited by 19 publications

References 23 publications

Comparative evaluation of three gingival displacement materials for efficacy in tissue management and dimensional accuracy

Comparative evaluation of three gingival displacement materials for efficacy in tissue management and dimensional accuracy

Comparative evaluation of linear dimensional accuracy of impressions made with different elastomeric impression materials (Polyether and Polyvinyl siloxane) in angulated and parallel implants-An invitro study

Evaluation of Dimensional Change in Different Elastomeric Impression Materials Used in Implants: An Original Research

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