الفهرس 
IntroductionOnly 14 pages are availabe for public view
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Abstract
This in-vitro comparative study was conducted to evaluate
the effect of using different attachment systems (Novaloc&
Equator) on stress distribution around implants in implant
supported prostheses. Using a mandibular 3D-printed cast model
from the epoxy resin after selection of the implant sites,
surrounded by four channels of estimated depth, to allow a 2mm
thickness of epoxy resin between the strain gauge rosettes and the
implant. Two implants were inserted parallel to their sites in the
3D-printed model, and attachment were screwed.
Sixteen attachments divided into two groups (n=8/group).
group A: Eight Novaloc attachments.
group B: Eight Equator attachments.
A Mandibular cast of edentulous patient scanned and
designed using (exocad valeta 3.0) with 3d printing material
(HARZ labs). Two implant beds were designed, and holes were
designed at the mesial, distal, buccal and lingual aspect of each
implant to receive the strain gauges. A key index with 2 mm
thickness and 2 mm offset with tissue stops was designed for the
purpose of creating a space for the mucosa simulator representing
the future mucosa. Strain gauges were cemented around the
Summary & Conclusion
84
implants to measure the micro strain. The load was applied using a
universal testing machine, and stress analysis was made. Results
were collected and analyzed.
Conclusion:
Within the limitations of this in-vitro study and based on its
results, there was a statistically significant difference.
It was concluded that: -
Both Novaloc and Equator attachments are less traumatic to
underlying bone in implant supported overdenture, with Novaloc
attachment being less traumatic under oblique loading than
Equator attachment