Polytetrafluoroethylene (PTFE) is a synthetic polymer used in operative dentistry due to its non-stick, chemical resistant, and temperature resistant properties. It is applied in various dental procedures for isolation, matricing, and restoration, notably using Teflon tape for effective field isolation and margin exposure. The document also provides information on how to sterilize and utilize PTFE in dental practices, along with references to relevant literature.

1. KAREEM LOTFY
What’s it made From & What’s it good for
ASSISTANT LECTURER OF
OPERATIVE DENTSITY

2. CONTENT
01
02
03
04
05
06
07
WHAT’S IT MADE FROM
FEATURES
USES
USES IN OPERATIVE DENTSITRY
DID YOU KNOW
FAQS
REFERENCES

3. Polytetrafluoroethylene (PTFE) is a polymeric
material that has common uses outside of
dentistry.
WHAT’S IT MADE FROM??
Polytetrafluoroethylene is a synthetic
fluoropolymer made from the polymerization
of tetrafluoroethylene (TFE) monomers

4. CHEMICAL
COMPOSITION
• The chemical composition of PTFE thread
consists of carbon and fluorine atoms. The
repeating unit in the polymer chain is
composed of carbon and fluorine atoms
arranged in a linear fashion.
• The chemical formula for
polytetrafluoroethylene is (C2F4)n,
where "n" represents the number of
repeating units in the polymer chain.

5. FEATURES

6. 01
Which means it does
not adhere to other
surfaces. This allows
the tape to be easily
applied and removed
without leaving
residue
NON STICK
02 03 04
PTFE is highly
resistant to
chemicals, including
acids, bases,
solvents, and oils.
CHEMICAL
RESISTANCE
Can withstand a
wide range of
temperatures,
making it suitable
for both hot and
cold-water systems.
TEPERATURE
RESISTANCE
Due to its high
melting point (over
300°C) to ensure
that it is sterile
before use
AUTOCLAVABLE
05
HYDROPHOBIC
Moisture Resistance

7. USES
CROWN OPERATIVE IMPLANT
01 02 03 04
ENDODONTICS

8. USES IN OPERATIVE
DENTISTRY
Isolation Matricing Restoration

9. ISOLATION

10. TEFLON
Teflon tape can be used to
ensure proper isolation
around the rubber dam in
case of isolation breach

11. TEFLON
Teflon tape can be used to
ensure proper isolation and
Margin exposure in case of
Deep Margin Elevation “DME”

12. TEFLON
Teflon tape can be used In
lieu of retraction cord

13. ISOLATION OF
THE FIELD
Teflon tape ensures that the
proximal surfaces of the
adjacent teeth are not
etched and bonded; thus
preventing iatrogenic
bonding within the contact
area.

14. ISOLATION OF
THE FIELD

15. MATRICING

16. MATRICING
Teflon tape can be used to
ensure proper “Adaptation”
Of matrix band to the cavity
margins

17. MATRICING
Teflon tape can be used to
ensure proper “Adaptation”
Of matrix band to the cavity
margins

18. MATRICING
Teflon tape can be used to
ensure “Adaptation
&sufficient space” in Back to
Back restorations

19. MATRICING
Teflon tape can be used to
ensure proper “Adaptation”
Of matrix band in case of
double band matricing

20. MATRICING
Teflon tape can be used to
ensure proper “Adaptation”
Of matrix band in Band in
Band technique in DME cases

21. RESTORATION

22. TEFLON
Teflon tape can be used in
“ occlusal stamp technique”

24. TEFLON TAPES COMES
IN
A VARIETY OF
DIFFERENT BRANDS
AND THICKNESSES

25. The most commonly
used 0.02mm
or 0.075mm

27. Howto
sterilize it?
Howto
place it??

28. It can be autoclaved
by wrapping around a
tongue depressor

29. Using a Blunt
instrument or
applicator

30. Hernández Tecanhuey, G. (2018). Uses and techniques of
polytetrafluoroethylene (PTFE) in dentistry (Doctoral dissertation).
Sattar, M. M., Patel, M., & Alani, A. (2017). Clinical applications of
polytetrafluoroethylene (PTFE) tape in restorative dentistry. British dental
journal, 222(3), 151-158.
Coffey, N. (2022). The use of PTFE tape in restorative dentistry. Journal
of the Irish Dental Association, 68(5).

32. Thank
you All