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Órgano Oficial de la Asociación Dental Mexicana

2016, Number 1

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Rev ADM 2016; 73 (1)

Study of the effect of two disinfection techniques on an impression material

Contreras GF, Tinoco CVC, Méndez MR, Todd JM, Llamas OFJ

Language: Spanish
References: 25
Page: 17-22
PDF size: 243.71 Kb.


ABSTRACT

Introduction: Infection control is a fundamentally important professional obligation of the dental practitioner, as is the obligation to reduce the risk of cross-contamination during clinical procedures in order to ensure the quality and safety of the dental care provided. Material and methods: A total of 27 individual impressions were obtained from patients divided into 3 treatment groups: a control group, in which 9 individual impressions were obtained using addition-cured silicone without disinfection and immersed in bi-distilled water for 10 minutes; group A, in which 9 individual impressions were immersed in 2% glutaraldehyde for 10 minutes; and group B, in which 9 individual impressions were sterilized using an autoclaving at 134 oC for 15 minutes at 15 psi. Results: After performing the respective bacterial count for each study group, we proceeded to observe the bacterial growth in both. The samples for group B showed a notable absence of growth, whereas in the control group the count was higher than in group A. Conclusions: Washing the impression reduces the amount of microorganisms present though does not disinfect it. A 2% glutaraldehyde solution is effective in removing the nonsporulating microorganisms from the oral cavity that are present on the impressions made from elastomeric materials. In impressions made from such materials, complete elimination of microorganisms can be achieved by sterilizing them.


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