To evaluate and compare the accuracy of definitive casts using various splinting methods on implant level impressions in All-on-Four treatment: An in vitro study
| Autor: | S Daya Shankar, Santosh Doddamani |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Orthodontics
business.industry Significant difference Anova test 030206 dentistry Direct Technique Impression Dental stone 030207 dermatology & venereal diseases 03 medical and health sciences 0302 clinical medicine implant level impressions splinting technique In vitro study Medicine All on four Original Article Implant Oral Surgery business General Dentistry All-on-Four implant prostheses |
| Zdroj: | The Journal of the Indian Prosthodontic Society |
| ISSN: | 1998-4057 0972-4052 |
| Popis: | Aim: The aim of this study is to evaluate and compare the accuracy of master casts obtained by different splinting techniques for implant level impressions in All-on-Four implant treatment protocol using a coordinate measuring machine. Settings and Design: The study design involves an in vitro study. Materials and Methods: In this in vitro study, a reference clear acrylic resin (AR) model comprising four regular platform implant 3.6 mm × 10.0 mm (Dentium Implant India Pvt. Ltd, Bengaluru, India) which was placed following the All-on-Four implant protocol is prepared. Impressions were categorized into three different groups: Group 1 – impression copings were nonsplinted; Group 2 – impression copings were splinted using AR sectioned 17 min after setting and rewelded with the same resin; and Group 3 – impression copings were splinted by titanium bar using an intraoral welder. A total of 33 (n = 11 in each group) impressions were made to evaluate three different splinting techniques. Impressions were poured with Type 4 dental stone. A coordinate measuring machine was used to record the x, y, and z co-ordinates and angular displacement. The measurements were compared with those obtained from the reference model. Statistical Analysis Used: One-way ANOVA test was used as a test of significance. Results: There was less linear and rotational displacement for the metal-splinted group (P < 0.001) In the x-axis, nonsplinted group showed a statistically significant difference in straight implants (2 and 3 implants) (P = 0.001) of All-on-Four treatment protocol. Conclusion: The splinting methods have a direct effect on the accuracy of definitive casts. The metal-splinted direct technique produced the most accurate casts followed by AR-splinted direct technique and nonsplinted direct technique. |
| Databáze: | OpenAIRE |
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