Background: Most data on laser resurfacing have come from studies of people with Fitzpatrick skin types 1 3; however, the world’s population is comprised mostly of Fitzpatrick skin types 4 6, which are more susceptible to post-inflammatory hyperpigmentation (PIH). Objective: For the purpose of expanding the expertise of plastic surgeons treating patients with darker skin types, this study exami...

Carbon-phenolic ablators are very efficient heat shields for atmospheric reentry vehicles: they able to protect a capsule from hyper thermal environments characterized by intense fluxes (>1 MW/m2) and high temperature (also exceeding 300°C). Ablative materials can be modified the addition of nano-fillers in order improve their performance: small amounts (in 2–5 wt%) enhance matrix material prop...

INTRODUCTION The Q-switched 1064-nm laser is associated with rapid vaporization and thermal expansion stresses leading to skin mechanical damage and is typically used for correction of exogenous and endogenous deep pigmentation. Giving the common place of fractional, infrared-domain milliseconds non-ablative lasers in aesthetic dermatology, a novel non-ablative fractional Q-switched 1,064-nm la...

BACKGROUND AND OBJECTIVE Pulsed carbon dioxide (CO(2)) laser devices are considered highly effective treatment options for skin resurfacing. However, the high risk for significant treatment complications following CO(2) resurfacing has warranted the development of new treatment modalities. The concept of fractional photothermolysis was developed to address the shortcomings of ablative and non-a...

Fractional resurfacing may be used in the management of melasma, striae/stretch marks, acne scars, pearly penile papule, syringoma, burn scar, verrucous epidermal naevus and skin tightening. In 20-30% of the patients with melasma, fractional resurfacing may not be effective or may even cause an exacerbation. Treatment effects may also be temporary. When compared with traditional carbon dioxide ...

BACKGROUND Striae distensae (SD) treatment still remains a therapeutic challenge to dermatologists. Ablative fractional laser and radiofrequency (RF) enhance skin-drug permeability for SD treatment. OBJECTIVE To clinically evaluate the efficacy and safety as well as patient's satisfaction in relation to a method using ablative fractional RF associated with retinoic acid 0.05% cream and an aco...

BACKGROUND AND OBJECTIVES We introduce a novel CO(2) laser device that utilizes ablative fractional resurfacing for deep dermal tissue removal and characterize the resultant thermal effects in skin. STUDY DESIGN/MATERIALS AND METHODS A prototype 30 W, 10.6 microm CO(2) laser was focused to a 1/e(2) spot size of 120 microm and pulse duration up to 0.7 milliseconds to achieve a microarray patte...

Predicting the surface morphology of materials during steady-state ablation is important in rocket motor nozzles and heat shields vehicles performing atmospheric re-entry. When designing ablative materials, a high number calculations required for analyzing morphology. To effectively design these reduce experiments, fast, effective, simple calculation method required. Although fundamental theory...