Safety and Efficacy of Different Intervals of Pulsed Dye Laser Sessions on Improvement of Surgical Scars

The Effect of Different Intervals of 595-nm Pulsed Dye Laser Sessions on Improvement of Surgical Scars: A Double Blind Randomised Clinical Trial

Status

Withdrawn

Phases

Study type

Interventional

Source

ClinicalTrials.gov

Registry ID

NCT00506090

Enrollment

Registered

2007-07-25

Start date

2007-07-31

Completion date

Unknown

Last updated

2009-10-06

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Scar

Keywords

scar, surgery, lasers

Brief summary

The appearance of skin after surgery plays an important role in patient's self confidence and life style. In fact, Keloids and hypertrophic scars are abnormal wound responses appearing in predisposed individuals after surgery. Among different kind of lasers, used to improve the appearance of hypertrophic scars and keloids, pulsed dye laser is now being used successfully in treatment of scars. Pulsed dye laser is effective in improving the color, height, texture, and elasticity of scars. Also, treatment with this technique is noninvasive, minimally uncomfortable, and requires no anesthesia. This study will assess the efficacy and safety of different intervals of pulsed dye laser sessions on improvement of surgical scars.

Interventions

PROCEDUREpulsed dye laser therapy

Treatment will begin on the day of suture removal. Each scar will be divided into 3 equal parts. One part will be randomly allocated to be treated with pulsed dye laser and dynamic cooling device at 3 weeks intervals for 6 sessions. Another part will be treated with pulsed dye laser and dynamic cooling device at 6 weeks intervals for 6 sessions. Only dynamic cooling device will be used for remaining part serving as control.

Study design

Allocation

RANDOMIZED

Intervention model

FACTORIAL

Primary purpose

PREVENTION

Masking

TRIPLE (Subject, Investigator, Outcomes Assessor)

Eligibility

Sex/Gender

ALL

Age

18 Years to 80 Years

Healthy volunteers

Inclusion criteria

* Surgical scar with minimum length of 6 cm

Exclusion criteria

* History of light sensitivity or photodermatoses * History of adverse reactions to laser treatment

Design outcomes

Primary

Measure	Time frame
pigmentation, pliability, width and height of surgical scars	baseline, middle of the study, 1 and 3 months after the last treatment session

Secondary

Measure	Time frame
1- Clinical appearance of surgical scars 2- Patient's satisfaction (scar erythema, scar thickness and scar induration) 3- Adverse events	1 and 3 months after the last treatment session

Countries

Iran

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026