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ORIGINAL RESEARCH Table of Contents   
Year : 2012  |  Volume : 23  |  Issue : 2  |  Page : 209-212
Effect of five brands of latex gloves on the setting time of polyvinyl siloxane putty impression materials


1 Department of Prosthodontics, Vyas Dental College and Hospital, Near Kudi Haud, Kudi, NH-65, Pali Road, Jodhpur, Rajasthan, India
2 Department of Prosthodontics, Rama Dental College Hospital and Research Center, A/1-8, Lakhanpur, Kanpur, Uttar Pradesh, India

Correspondence Address:
C M Ravikumar
Department of Prosthodontics, Vyas Dental College and Hospital, Near Kudi Haud, Kudi, NH-65, Pali Road, Jodhpur, Rajasthan
India
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/0970-9290.100427

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Addition silicone impression materials have been used as impression material for more than 20 years. Although they are among the most expensive impression materials, they became popular during the past decade as they have excellent physical properties. Prevention of infection is an important aspect in dental treatment since dental professionals are routinely exposed to the wide variety of microorganisms present in saliva. Gloves are the most common protective measure used during dental treatment. The gloves are mostly made of latex. In this study, we examine how the setting time of three types polyvinyl putty materials were affected by the use of five different brands of latex gloves and one brand of vinyl gloves. Each material was first mixed without wearing gloves according to the manufacturer's instructions. After the stipulated mixing time, the setting time was measured using the Vicat needle. The setting time is measured from the time of mixing till the time that the needle does not produce any indentation on the surface of the material. The putty material was then mixed with gloved hands (using the five different brands of latex gloves in turn) and the setting time was measured. Then the material was mixed with washed gloved hands, and the setting time was measured again. Finally, the material was mixed with vinyl gloved hands and the setting time was measured. The following conclusions were drawn from the study:
  • Reprosil™ and Express™ showed significant variation in the setting time with the latex gloved hands.
  • There was no significant variation in the setting time when material was mixed with unwashed vs washed gloved hands.
  • Vinyl gloves did not significantly affect the setting time of any of the putty impression materials.


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