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Elastomeric Thread Separators
Elastomeric separators can be difficult to place when a posterior tooth is partially erupted, submerged, or trapped under the adjacent tooth. In addition, many adult patients present with extremely worn occlusal surfaces and tight contacts. Although wire separating springs have traditionally been used in such situations, a better alternative is to fabricate a separator from elastomeric thread.Get more news about Plast Recycling Maskine,you can vist our website!
We use Ultra Tuff .030" elastomeric thread, which has a textured surface to keep it from coming untied. A strand of dental floss is first placed between the contacts, then doubled over to form a loop (Fig. A). The elastomeric thread is pulled through to the buccal surface with the loop (Fig. B). One end of the thread is then pulled free, and the floss is removed. The thread is tied three or four times (Fig. C), reversing the direction each time to prevent slippage, and cut off (Fig. D). In some cases, it may be possible to insert the thread directly into the contact without the floss loop.
After one or two weeks, the thread is removed by grasping the knot with an instrument (Fig. E). This technique usually creates sufficient space to place an elastomeric separator. It also allows trapped molars to erupt and upright, saving treatment time (Fig. F). It provides better separation and is more comfortable than separating springs.
Trelleborg Sealing Solutions launched FoodPro E75F1, an elastomer sealing material.Get more news about Plast Recycling Maskine,you can vist our website!
FoodPro E75F1 is a shore EPDM universal sealing material for static and semi-dynamic food applications, such as separators, decanters, valves, pipe couplings and heat exchangers, in any type of seal design, from standard O-rings and gaskets to multicomponent parts. It combines with other rubber, plastic and metal materials, allowing for the creation of multicomponent products, which helps eliminate potential dead space where bacteria may grow, according to the company.
The material is compression and injection moldable into complex geometries and withstands surface imperfections in applications. It was developed specifically for use in high-temperature dairy processing, including infant formula, and complies with all major global food contact regulations.
"Processing equipment manufacturers can look to FoodPro E75F1 to meet their customers' needs because of its suitability for the widest range of applications," said Mikkel Moerup, global segment director of food and beverage at Trelleborg Sealing Solutions. "They no longer need to specify sealing materials for each piece of equipment dependent on geographical use, process media and cleaning regimes."
Objective: The aim is to determine the perception of pain and discomfort by the patient during the placement of orthodontic separators. Methods: Elastomeric separators were placed mesially and distally to the first molars in 200 orthodontic patients, and the participants were given self administrated questionnaires to document perceived pain, type of pain felt, pain upon chewing, and the severity of pain's affecting daily life, using a visual analog scale for three days. Results: The mean perceived pain scores out of 100 on the first 3 days were:49.00±27.7 88.00±30.7 and 25.12±14.3 respectively; chewing pain scores were: 49.25± 33.49 ,78.80 ± 44.2, 31.21± 20.01,respectively; the pain's affecting daily life scores were16.7 ± 26.7,28.1± 38.7, 14.6±12.1, respectively. A Kruskal-Wallis test showed a statistically significant difference in the reported pain between the studied parameters. Conclusion: 51.7% of population reported pain after separator placement.88% of patients reported the maximum intensity of pain one day after separator placement. Intensity of pain reduced two days after separator placement.56.12% of patients had to change their food consistency.