Color Stability of Prefabricated Pediatric Zirconia Crowns: A Comprehensive Analysis of the Impact of Multiple Autoclave Cycles
Abstract:
When sterilizing dental
restorative materials, autoclaving is essential because it guarantees the
removal of potentially hazardous germs and upholds aseptic conditions. This is especially
important for pediatric dentistry, where prefabricated zirconia crowns are
often used because of their long-lasting and attractive qualities. Autoclaving
affects the chemical and physical properties of dental materials in addition to
helping to control infections. The aim of the present study is to evaluate
effect of repeated autoclave cycles on the color stability of pre-fabricated
pediatric zirconia crowns. A total of 30 mandibular molar crowns were used in
the in-vitro study. The crowns were divided into two groups according to the
brands. Group 1 (Nu-Smile), Group 2 (Kids E Crown). The color stability was
measured using a spectrophotometer. Initial color readings are taken for all
the 30 samples. After each cycle of sterilization color stability was measured
using a spectrophotometer. The color changes in the crowns obtained from the
spectrophotometer was analyzed by CEILAB method. It showed the L, A, B
values of NU Smile and KIDS E zirconia material crowns during initial, after 1st
and 2nd cycle of Autoclave. NU Smile value showed increase in value
which indicates lightness of material and KIDS E value showed decrease in value
which indicated darkness of material. There was no significant difference in
the color stability of the crowns after each cycle of autoclave sterilization
in both the brands. Additionally, further clinical studies with
longer follow-up periods are needed.
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