Effect of Screw Access Channel Filling Method and Cement Type on Marginal Adaptation of Implant-Supported Fixed Restorations

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Masih Bahar; MAHABADI MEYSAM; MOHAMMADI ZAHRA

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Journal: Journal of Mashhad Dental School Year:2019 | Volume:43 | Issue:1 Page(s): 75-82

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Title

Effect of Screw Access Channel Filling Method and Cement Type on Marginal Adaptation of Implant-Supported Fixed Restorations

Author(s)

Masih Bahar | MAHABADI MEYSAM | MOHAMMADI ZAHRA | Issue Writer Certificate

Keywords

Marginal AdaptationQ1

ImplantsQ2

AbutmentsQ2

Dental CementsQ1

Abstract

Introduction: One of the important factors in the success of implant-supported prostheses is the marginal fit of abutment-restorations. The aim of this study was to evaluate the effect of screw access channel filling method and cement type on the Marginal Adaptation of implant-supported fixed restorations. Introduction: One of the important factors in the success of implant-supported prostheses is the marginal fit of abutment-restorations. The aim of this study was to evaluate the effect of screw access channel filling method and cement type on the Marginal Adaptation of implant-supported fixed restorations. Materials and Methods: In this experimental in vitro study, 40 implant analogs were mounted in autopolymerizing acrylic resin blocks using a dental surveyor. Forty two piece titanium Abutments were placed in each implant analog and torque up to 35 N cm. The following acrylic blocks of Implants were randomly divided into 2 groups, including 20 abutment samples fully filled by the silicone, and 20 Abutments sample filled partially with silicon. The marginal discrepancy of samples was measured from 4 sides with a magnification of ×50 by stereomicroscope before final cementation. In each study group, 10 samples were cemented by zinc-oxide eugenol temporary cement and 10 other samples with zinc-oxide non-eugenol temporary cement. The marginal discrepancy was measured at the same points again. Data were analyzed with ANOVA and, t-test (α =0. 05). Results: In all surfaces there were no significant differences in the mean marginal discrepancy between the group in which screw access channels were partially filled and the group in which screw access channels were completely filled before (P˃ 0. 05)and after (P=0. 052) cementation. However after cementation significant differences were found between the means of marginal discrepancy in two cement types (P=0. 02). Non-eugenol cement showed significantly higher marginal discrepancy than eugenol cement (P=0. 03). Conclusion: The mean marginal discrepancy in both full and partial access cavity filling groups did not differ significantly, but a marginal discrepancy with the use of non-eugenol cement was greater than eugenol cement.

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APA: Copy

Masih, Bahar, MAHABADI, MEYSAM, & MOHAMMADI, ZAHRA. (2019). Effect of Screw Access Channel Filling Method and Cement Type on Marginal Adaptation of Implant-Supported Fixed Restorations. JOURNAL OF MASHHAD DENTAL SCHOOL, 43(1 ), 75-82. SID. https://sid.ir/paper/73997/en

Vancouver: Copy

Masih Bahar, MAHABADI MEYSAM, MOHAMMADI ZAHRA. Effect of Screw Access Channel Filling Method and Cement Type on Marginal Adaptation of Implant-Supported Fixed Restorations. JOURNAL OF MASHHAD DENTAL SCHOOL[Internet]. 2019;43(1 ):75-82. Available from: https://sid.ir/paper/73997/en

IEEE: Copy

Bahar Masih, MEYSAM MAHABADI, and ZAHRA MOHAMMADI, “Effect of Screw Access Channel Filling Method and Cement Type on Marginal Adaptation of Implant-Supported Fixed Restorations,” JOURNAL OF MASHHAD DENTAL SCHOOL, vol. 43, no. 1 , pp. 75–82, 2019, [Online]. Available: https://sid.ir/paper/73997/en

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