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ORIGINAL RESEARCH
Year : 2018  |  Volume : 10  |  Issue : 6  |  Page : 299-302

Evaluation of different impression techniques for indirect E-max fixed dental prostheses. Randomized clinical trial


1 Dental Intern, Al-Farabi College, Jeddah, Saudi Arabia
2 Department of Fixed and Removable Prosthodontics, Oral and Dental Research Division, National Research Centre; Department of Fixed Prosthodontics, Faculty of Oral and Dental Medicine, Ahram Canadian University (ACU), Giza; Department of Fixed Prosthodontics, Al Nahda University (NUB), Beni Suef, Egypt
3 Department of Fixed and Removable Prosthodontics, Oral and Dental Research Division, National Research Centre, Giza, Egypt
4 Dentist, King Fahd Armed Forces Hospital, Jeddah, Saudi Arabia

Correspondence Address:
Dr. Rami M. Galal Atia
59 4th, Touristic District, 6th of October, Giza
Egypt
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/jioh.jioh_191_18

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Background: Assessment of optical in comparison to traditional impressions is needed. The goal of this research is evaluating optical and traditional impressions regarding time, participant, and operators' preference. Materials and Methods: One optical and two traditional impressions were made in ten participants randomly. Optical scanner used is Omnicam of Cerec; traditional impression used closed mouth tray and other used one-step traditional tray. Time taking impression and occlusal relationship registration were evaluated. Participants and operators feeling about easiness of procedure were evaluated using visual analog scales. Paired t-test was applied detecting differences. Results: Mean time ± standard deviation was 336 ± 9.4 s using traditional closed mouth technique, 557 ± 8.2 for single step, and 397 ± 8.6 s for Omnicam. Timing of closed mouth technique was significantly lower than single-step and optical impression. Participant's assessment (very uncomfortable = 0 and comfortable = 100) measured 68 ± 9.7 for closed mouth, 79 ± 9.4 for optical, and 59 ± 9.7 for the single-step technique. There was statistical significance between differences except between closed mouth and single-step techniques; differences between them were not significant. Operators assessment (simple = 0 and very difficult = 100) was 21 ± 9.5 for closed mouth, 62 ± 9.2 for optical, and 46 ± 11.2 for single-step technique. There was statistical significance between the differences. Conclusions: Closed mouth took less time than optical and the single-step technique. Regarding comfort of participant, optical impression was the best. Operator's assessment favored optical impressions most as being the easiest.


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