Disinfection of alginate Impressions that had been taken for orthodontic study models For this procedure I ensured that I was wearing my safety goggles, mask, plastic apron and a pair of clinical gloves. I was wearing my clinical uniform, with my hair neatly tied back and black, rubber soled, lace up shoes. Once the impression had been removed from the patient’s mouth I placed them in a kidney bowl and took them to the dirty sink. I then rinsed them under running water to remove any blood, saliva and debris. After rinsing I check that all debris was removed. I removed the lid of the disinfectant pot and placed the impressions next to each other in the solution ensuring each was completely submerged. The disinfection solution I used was Perform which is suitable for use with Alginate impression materials. The solution had been made up fresh this morning by mixing one sachet of perform-ID with 2 litres of water in the manufacturer supplied perform pot.
I placed the lid back on the pot, removed my gloves and set the timer for 10 minutes. I made sure I timed the duration the impressions were in the solution as if they are left in for too long they can absorb water and expand which would distort the impression.
Whilst waiting for the impression to be disinfected, I completed the Lab card. I recorded:
The patients name
The dentists name
Date to be returned
I also wrote down that the impressions were taken for the construction of study models and that the impressions had been disinfected. I prepared a plastic bag for the impressions and wrote the patients name, date and dentists name on the bag. When the alarm sounded I placed on a new pair of clinical gloves and removed the lid of the pot. I removed each impression from the solution and then rinsed them under running water. I turned the impressions upside down to remove any excess water. I then wet some gauze under the tap and then squeezed it to remove excess moisture. I then wrapped each impression in gauze and placed each one into the plastic bag. I wrapped it in gauze to make sure that the impression did not dry out and shrink before the laboratory collected the impressions and to cast the models.
I removed my gloves and used a stapler to attach the lab card to the bag. I then placed the impressions in to the fridge until the laboratory came to collect them
2. Aim of Disinfection Procedure
Students should state the overall aim of the disinfection process
The decontamination process renders items safe for further use and safe for staff to handle. The process of decontamination needs to be carried out in order to minimise the risk of cross infection between patients and between patients and staff. Dental impressions cannot be decontaminated using an autoclave because the heat would distort and ruin the impression. Therefore impressions are disinfected with a suitable chemical which can kill bacteria and fungi, only kill some viruses but does not kill spores.
3. Reflective Account
Students should identify their strengths and weaknesses during the procedure and describe any action they would take to address weaknesses in the future, if required
I was pleased with how I carried out this procedure today. I have done this procedure many times now and feel that I know how to do this correctly. In my last PERS my dentist said that I wet the gauze a bit too much and left too much water in the impression. This time I turned the impression upside down so there was no water left sitting in the impression and made sure that I squeezed out the water from the gauze so that it was not to wet and soggy to wrap the impressions in.
Unit 1 Section 3: Disinfection of Impressions
4. Witness Feedback
Student Dental Nurse’s Name:
Date of Activity:
This Section should be completed by the GDC (or other) registrant who witnessed the activity of the student and is assessing their competence.
Constructive feedback will help the student to develop their performance in the workplace.
This section should be completed by the GDC registrant who is assessing all sections of the completed PER and is normally based at the Training Centre. Constructive feedback will help the student to develop their performance in the workplace.
Feedback to Student: