"Evaluation of the Effect of Ultraviolet Disinfection on Dimensional Stability of the Polyvinyl Silioxane Impressions." an in-Vitro Study.
BACKGROUND
Infection control is an important concept in the present day practice of dentistry. The prosthodontists are at an added risk of transmission because of the infection spreading through the contaminated lab equipments while working in the lab. The purpose of this study is to evaluate the effect of UV light disinfection on dimensional stability of polyvinyl siloxane impressions. Materials and Methods : Impressions were made in perforated custom tray. After polymerization of impression, half the samples were disinfected in UV light and remaining samples were not subjected to disinfection and poured in die stone which served as control group. Linear dimensions were measured on the cast with travelling microscope of 0.001accuracy. Result : The result showed that UV light disinfectant showed no significant dimensional changes on impressions.


CONCLUSIONS
Hence, it can be safely used to disinfect impressions in clinical prosthodontic procedures.
HOD and Professor, Department of Prosthodontics, Sharad Pawar Dental College , Sawangi, Wardha, Maharashtra, India .
Surekha R
SR
Godbole
Reader, Department of Prosthodontics, Sharad Pawar Dental College , Sawangi, Wardha, Maharashtra, India .
Trupti M
TM
Dahane
Post Graduate Student, Department of Prosthodontics, Sharad Pawar Dental College , Sawangi, Wardha, Maharashtra, India .
Nikita A
NA
Patidar
Post Graduate Student, Department of Prosthodontics, Sharad Pawar Dental College , Sawangi, Wardha, Maharashtra, India .
Sharayu V
SV
Nimonkar
Disinfection; Impression materials; UV disinfectant unit