UGC NET Paper 1 Mathematical Reasoning & Aptitude.pdf
Effect of diode laser depigmentation of gingival tissues
1. Effect of diode laser
depigmentation of
gingival tissues
Basma Magdy ,Mennatallah Mohamed Abdelsabrin ,Hind Samy
Under Supervision of : A. Prof Samah Kamel
2. Introduction
•Laser has been used in dentistry since
the beginning of the 1980s.
•Recent research has centred on using
diode laser for oral surgery of the
tongue and gingiva and to remove
infected epithelium in chronic
periodontitis.
3. Advantages of diode laser
Easy gingival reshaping.
Reduced need of local anaesthesia.
Dry operative field due to excellent haemostasis associated with
significant decrease in pain and inflammatory postoperative
score.
Minimal scarring and satisfactory clinical outcome on the long
term have also been achieved.
It is an effective treatment for patients which have
Physiologic gingival pigmentation (PGP).
4. Study
Study has been published assessing the correction of PGP
using diode laser. Therefore, the aim of this study was to
evaluate the effect of diode laser on PGP in 20 adult
patients.
5. Exclusion
• Hyperpigmentation that was associated with systemic diseases,
drug use, and diseases that could compromise wound healing
(i.e. uncontrolled diabetes mellitus, autoimmune diseases)
• Pregnancy or lactation
• Evidence of association of hyperpigmentation with malignancy
• History of previous treatment of hyperpigmentation
• Smoking
• Periodontal problems
6. Procedure
• A topical anaesthesia is used.
• Special eye glasses were worn by the
patients and the staff.The pigmented
gingiva in the aesthetic zone was
ablated by laser.
• by using 810 nm wavelength diode laser
and 1W power depending on the
7. Gingival melanin pigmentation was evaluated on
photographs taken pre- and postoperatively. We
classified PGP in patients as follows:
Mild: Pink to slightly brown Moderate: Dark
brown or black
8. Pre-operative
• Maxilla • Mandible
Mild
pigmentation
Moderate
pigmentatio
n
Severe
pigmenta
tion
Mild
pigmentatio
n Moderate
pigmentatio
n
Severe
pigmenta
tion
9. One month post-operative
Maxilla Mandible
No severe
No
pigmentation
Mild
pigmentation
Moderate
pigmentation
No severe
No
pigmentation
Mild
pigmentation
Moderate
pigmentation
10. 3 months post-operative
Maxilla Mandible
No severe
No
pigmentation
Mild
pigmentation
Moderate
pigmentation
No severe
No
pigmentation
Mild
pigmentation
Moderate
pigmentation
11. Advantages of diode laser in gingival
depigmentation
• Have a smaller size and
lower cost
• Do not produce any
harmful effects on the
root surface
• Does not damage the
periosteum
• Has bactericidal effects,
so it decreases bacterial
• Energy concentration at the
tip of laser hand piece
enables easy removal of
superficial cell layer and part
of the connective tissue
without bleeding or excessive
trauma.
• used for cutting and
coagulation of gingival tissue
due to its affinity for
haemoglobin and melanin
12. First study, we obtained favourable results
it is a minimally invasive technique for
correction of anaesthetic gingival
pigmentation and patients were satisfied
with the outcome.
13. Another study
Done on 15 patient but with 980nm wavelength
of diode laser, it was really significant as no one
of patients showed any signs of bleeding even till
the 3rd month. But only 4 patients complained
with pain after procedure and decreases after
1week.
14. Both studies proves
Diode laser is safe and effective, however
studies should be done on larger sample
size for evidence, accuracy and to check if
it is safe to use it and remain permanent on
the long run or not. Also studies
concentrated on ages from 18 to 40 so we
have to widen the range of ages specially
above 40 as those patients are so sensitive
to many techniques.
