Thermoplastic devices are used in orthodontic treatment and consists of a series of nearly invisible, removable aligners. However, every device used in the mouth can change the buccal flora and increase the number of bacterias. This is a risk factor for enamel demineralization. The treatment can vary in time of use per day. The patient under orthodontic treatment has to use the device for 22 hour each day. When the period of retention comes, it is reduced to 8 hours. The investigators want to know if the concentration of bacterias in saliva and dental plaque will increase, and if the material can cause damage on gingiva.
The orthodontic thermoplastic devices became more affordable and with simple techniques, due to the technological advancement. The main advantage of this appliance is that it is nearly invisible, seen that patients do not want to show braces. Others reasons for searching this kind of treatment is because it is removable. While eating, brushing the teeth or even in a important social event, there is the facility to remove the appliance. In the other hand this appliance, according to the american board association, does not finish the treatment as well as the conventional braces. Another problem is that every device placed in the mouth is more plaque retentive, increasing the risk of enamel demineralization. Also, this device disrupts the normal flow of the saliva, preventing the buffering. This study will analyse the amount of streptococcus mutans and lactobacillus in the saliva and in the biofilm of the teeth and of the appliance, seeded in culture medium. Another point, is check the prognosis of the gingival health owing to the contact with the device during the hole treatment.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
SUPPORTIVE_CARE
Masking
DOUBLE
Enrollment
105
the patient will use de thermoplastic device during the night or during all day
the patient spit during 30 seconds in a small bottle
a sterile swab is rubbed at the buccal surface of the upper teeth
a sterile cytobrush is rubbed at the buccal surface of gingiva at the upper arch
Universidade Positivo
Curitiba, Paraná, Brazil
change in the amount of bacterias streptococcus mutans and lactobacillus sp. that adhere to thermoplastic device
Collect biofilm with a sawb of the thermoplastic device and inoculated at selective plate, to verify the colony-forming unit on the sample
Time frame: baseline, 15 days, 30 days respectively
change in the amount of bacterias streptococcus mutans that adhere to biofilm od the teeth
Collect biofilm with a sawb of the upper teeth and inoculated at selective plate, to verify the colony-forming unit on the sample
Time frame: Baseline, 15 days, 30 days respectively
change in the amount of bacterias lactobacillus sp. that adhere to upper teeth
Collect biofilm with a sawb of the upper teeth and inoculated at selective plate, to verify the colony-forming unit on the sample
Time frame: Baseline, 15 days, 30 days, respectively
change in the amount of bacterias streptococcus mutans in the saliva
Collect saliva and inoculated at selective plate, to verify the colony-forming unit on the sample
Time frame: Baseline, 15 days, 30 days, respectively
change in the amount of bacterias lactobacillus sp. in the saliva
Collect saliva and inoculated at selective plate, to verify the colony-forming unit on the sample
Time frame: Baseline, 15 days, 30 days, respectively
Check any change in the epithelium
Use cytobrush to collect gingiva
Time frame: Baseline, 15 days, 30 days, respectively
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