Authors :
Dr. Swati Gupta; Dr. Krishna Priya Singh; Dr. Amrit Tandan
Volume/Issue :
Volume 8 - 2023, Issue 9 - September
Google Scholar :
https://bit.ly/3TmGbDi
Scribd :
https://tinyurl.com/cthznb8r
DOI :
https://doi.org/10.5281/zenodo.8406382
Abstract :
Purpose:
The aim of the study is to fabricate an implant
crown for easy retrievability by designing a screw
access channel(SAC) that does not compromises the
fracture resistance of porcelain surrounding it.Materials and Method:
The study was conducted on SACs of two coping
designs of metal porcelain implant supported crown.The
two group were (n10): Group I: metal ledge around
SAC ; Group II: no metal ledge around SAC. The
specimens were loaded universal testing machine with a
cross-head speed of 2mm/min. Maximum values of loads
at failure was recorded for each specimen. Mean values
of fracture resistance for all groups were calculated and
compared by using one-way ANOVA.Result:
The mean value of load required to fracture for
Group 2 i.e. 1822 N was significantly higher compared
to Group 1 i.e 1077 N. The student t test revealed
statistically significant difference between the two
groups.Conclusion:
The study concluded that SAC without metal ledge
exhibited better porcelain fracture resistance as
compared to SAC with ledge. Though both groups
showed porcelain fracture resistance higher than
normal masticatory force measured in the oral cavity.
Keywords :
Screw Access Channel, Porcelain Fracture Resistance, Implant Supported Metal Ceramic Crown, Cement Retained Prosthesis, Screw Retained Prosthesis.
Purpose:
The aim of the study is to fabricate an implant
crown for easy retrievability by designing a screw
access channel(SAC) that does not compromises the
fracture resistance of porcelain surrounding it.Materials and Method:
The study was conducted on SACs of two coping
designs of metal porcelain implant supported crown.The
two group were (n10): Group I: metal ledge around
SAC ; Group II: no metal ledge around SAC. The
specimens were loaded universal testing machine with a
cross-head speed of 2mm/min. Maximum values of loads
at failure was recorded for each specimen. Mean values
of fracture resistance for all groups were calculated and
compared by using one-way ANOVA.Result:
The mean value of load required to fracture for
Group 2 i.e. 1822 N was significantly higher compared
to Group 1 i.e 1077 N. The student t test revealed
statistically significant difference between the two
groups.Conclusion:
The study concluded that SAC without metal ledge
exhibited better porcelain fracture resistance as
compared to SAC with ledge. Though both groups
showed porcelain fracture resistance higher than
normal masticatory force measured in the oral cavity.
Keywords :
Screw Access Channel, Porcelain Fracture Resistance, Implant Supported Metal Ceramic Crown, Cement Retained Prosthesis, Screw Retained Prosthesis.
