Impact of Implant Angulation on the Accuracy of Open and Closed Tray Impression Techniques

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Majidi Bahram; DARABI REZA; SAVABI OMID

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Paper Information

Journal: Journal of Isfahan Dental School Year:2020 | Volume:16 | Issue:1 Page(s): 54-62

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Title

Impact of Implant Angulation on the Accuracy of Open and Closed Tray Impression Techniques

Author(s)

Majidi Bahram | DARABI REZA | SAVABI OMID | Issue Writer Certificate

Keywords

Dimensional accuracyQ2

Implant angulationQ1

ImpressionQ2

Abstract

Introduction: Implants angles relative to each other might result in inaccurate Impressions, resulting in inaccurate master casts. This study aimed to evaluate the Dimensional accuracy of master casts in angulated dental implants. Materials & Methods: In this in vitro study, a unilateral partially edentulous acrylic model was prepared with two implants in the second premolar and second molar areas. Impressions were taken in nine different positions of the implant positions (0° , +15° ,-15° ), using two Impression techniques (closed tray, open tray) (n = 3) with polyvinylsiloxane Impression material. The master casts were scanned by a laser scanner, and the data were transferred to Materialise Magics software to measure the angulation between the implants. The Dimensional accuracy of the Impressions was calculated in different Implant angulations (i. e., parallelism, divergence and convergence of two implants). Data were analyzed using independent t-test and two-way ANOVA (α = 0. 05). Results: With a 0° angle between the implants (parallelism), there was no significant difference between the two Impression techniques (p value = 0. 102). However, when there was a >15º angle between the two implants, the open tray technique was significantly more accurate than the closed tray technique (p value ˂ 0. 05). Conclusion: The Implant angulation and Impression techniques affected the accuracy of the master casts. When Implant angulation increased from 0° to 30° , the distortion of the Impressions increased, too.

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APA: Copy

Majidi, Bahram, DARABI, REZA, & SAVABI, OMID. (2020). Impact of Implant Angulation on the Accuracy of Open and Closed Tray Impression Techniques. JOURNAL OF ISFAHAN DENTAL SCHOOL, 16(1 ), 54-62. SID. https://sid.ir/paper/126411/en

Vancouver: Copy

Majidi Bahram, DARABI REZA, SAVABI OMID. Impact of Implant Angulation on the Accuracy of Open and Closed Tray Impression Techniques. JOURNAL OF ISFAHAN DENTAL SCHOOL[Internet]. 2020;16(1 ):54-62. Available from: https://sid.ir/paper/126411/en

IEEE: Copy

Bahram Majidi, REZA DARABI, and OMID SAVABI, “Impact of Implant Angulation on the Accuracy of Open and Closed Tray Impression Techniques,” JOURNAL OF ISFAHAN DENTAL SCHOOL, vol. 16, no. 1 , pp. 54–62, 2020, [Online]. Available: https://sid.ir/paper/126411/en

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