Evaluation Of Splint Effect On The Dimensional Variations Of Implants Location Transfer With A 25 ̊angle By Open Tray Molding Method

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Saman Hosseini


One of the major purposes of making a prosthesis based on implant is to produce a superstructure
by a Passive Fitness. If such a Passive Fitness is not met, then the implant components will fail
which will ultimately result in the failure of the treatment. The aim of this research is to assess the
effect of Splint on the dimensional variations of implant location transfer with a 25 ̊angle by Open
Tray Molding Method using polyether material. The research by an experimental-laboratory
method was rendered on 15 specimens by 3 implant systems, tantamount to 45 specimens in each
group, and with 6 points (A,B,C,D,E,F). In order to produce the master cast of Velmix gypsum type
IV and a vacuumed blender were used. By either of the Splint and Non-Splint techniques, 15 times
molding was separately performed. Upon hardening of the gypsum, for a concurrent measurement
of the casts, they were placed on the mantining plate by use of a clamp, and by a multi axes
Coordinator (x-y-z), it was used on the upper surface of the hex implant and the base of the cast.
The statistical analysis used in this research was T-Test. The results of the research showed that
the range of the dimensional variations of the implant location transfer by Non-Splint technique
estimated at 170.2±68.4, and by Splint technique it was estimated at 169.8±71.7, and the T-Test
demonstrated that statistically such difference was not significant. Thus, given that the Non-Splint
molding method did not show a significant effect in diminishing the dimensional variations by
Splint method, and due to ease of manipulation and reduced time of molding process, the Open
Tray Non-Splint method is recommended.

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