Book contents
- Frontmatter
- Contents
- PREFACE
- CONTRIBUTORS
- PART ONE ANATOMY AND THE AGING PROCESS
- PART TWO ANESTHESIA AND SEDATION FOR OFFICE COSMETIC PROCEDURES
- PART THREE FILLERS AND NEUROTOXINS
- PART FOUR COSMETIC APPLICATIONS OF LIGHT, RADIOFREQUENCY, AND ULTRASOUND ENERGY
- Chap. 42 TREATMENT OF TELANGIECTASIA, POIKILODERMA, AND FACE AND LEG VEINS
- Chap. 43 VASCULAR LASERS
- Chap. 44 OVERVIEW OF CO2 AND ER:YAG LASERS AND PLASMA DEVICES
- Chap. 45 CONTEMPORARY CO2 LASER RESURFACING
- Chap. 46 ER:YAG
- Chap. 47 PLASMA SKIN REJUVENATION OF THE HANDS
- Chap. 48 NONABLATIVE LASER TISSUE REMODELING: 1,064-, 1,320-, 1,450-, AND 1,540-NM LASER SYSTEMS
- Chap. 49 OVERVIEW OF BROADBAND LIGHT DEVICES
- Chap. 50 TITAN: INDUCING DERMAL CONTRACTION
- Chap. 51 SCITON BROADBAND LIGHT AND ER:YAG MICROPEEL COMBINATION
- Chap. 52 AMINOLEVULINIC ACID PHOTODYNAMIC THERAPY FOR FACIAL REJUVENATION AND ACNE
- Chap. 53 THERMAGE FOR FACE AND BODY
- Chap. 54 LUMENIS ALUMA SKIN TIGHTENING SYSTEM
- Chap. 55 ELLMAN RADIOFREQUENCY DEVICE FOR SKIN TIGHTENING
- Chap. 56 ALMA ACCENT DUAL RADIOFREQUENCY DEVICE FOR TISSUE CONTOURING
- Chap. 57 COMBINED LIGHT AND BIPOLAR RADIOFREQUENCY
- Chap. 58 FRACTIONAL LASERS: GENERAL CONCEPTS
- Chap. 59 PALOMAR LUX 1,540-NM FRACTIONAL LASER
- Chap. 60 FRAXEL 1,550-NM LASER (FRAXEL RE:STORE)
- Chap. 61 1,440-NM FRACTIONAL LASER: CYNOSURE AFFIRM
- Chap. 62 SCITON ER:YAG 2,940-NM FRACTIONAL LASER
- Chap. 63 ALMA PIXEL ER:YAG FRACTIONAL LASER
- Chap. 64 FRACTIONATED CO2 LASER
- Chap. 65 LED PHOTOREJUVENATION DEVICES
- Chap. 66 PHOTOPNEUMATIC THERAPY
- Chap. 67 HAIR REMOVAL: LASER AND BROADBAND LIGHT DEVICES
- Chap. 68 ACNE AND ACNE SCARS: LASER AND LIGHT TREATMENTS
- Chap. 69 FAT AND CELLULITE REDUCTION: GENERAL PRINCIPLES
- Chap. 70 ULTRASHAPE FOCUSED ULTRASOUND FAT REDUCTION DEVICE
- Chap. 71 LIPOSONIX ULTRASOUND DEVICE FOR BODY SCULPTING
- PART FIVE OTHER PROCEDURES
- INDEX
Chap. 48 - NONABLATIVE LASER TISSUE REMODELING: 1,064-, 1,320-, 1,450-, AND 1,540-NM LASER SYSTEMS
from PART FOUR - COSMETIC APPLICATIONS OF LIGHT, RADIOFREQUENCY, AND ULTRASOUND ENERGY
Published online by Cambridge University Press: 06 July 2010
- Frontmatter
- Contents
- PREFACE
- CONTRIBUTORS
- PART ONE ANATOMY AND THE AGING PROCESS
- PART TWO ANESTHESIA AND SEDATION FOR OFFICE COSMETIC PROCEDURES
- PART THREE FILLERS AND NEUROTOXINS
- PART FOUR COSMETIC APPLICATIONS OF LIGHT, RADIOFREQUENCY, AND ULTRASOUND ENERGY
- Chap. 42 TREATMENT OF TELANGIECTASIA, POIKILODERMA, AND FACE AND LEG VEINS
- Chap. 43 VASCULAR LASERS
- Chap. 44 OVERVIEW OF CO2 AND ER:YAG LASERS AND PLASMA DEVICES
- Chap. 45 CONTEMPORARY CO2 LASER RESURFACING
- Chap. 46 ER:YAG
- Chap. 47 PLASMA SKIN REJUVENATION OF THE HANDS
- Chap. 48 NONABLATIVE LASER TISSUE REMODELING: 1,064-, 1,320-, 1,450-, AND 1,540-NM LASER SYSTEMS
- Chap. 49 OVERVIEW OF BROADBAND LIGHT DEVICES
- Chap. 50 TITAN: INDUCING DERMAL CONTRACTION
- Chap. 51 SCITON BROADBAND LIGHT AND ER:YAG MICROPEEL COMBINATION
- Chap. 52 AMINOLEVULINIC ACID PHOTODYNAMIC THERAPY FOR FACIAL REJUVENATION AND ACNE
- Chap. 53 THERMAGE FOR FACE AND BODY
- Chap. 54 LUMENIS ALUMA SKIN TIGHTENING SYSTEM
- Chap. 55 ELLMAN RADIOFREQUENCY DEVICE FOR SKIN TIGHTENING
- Chap. 56 ALMA ACCENT DUAL RADIOFREQUENCY DEVICE FOR TISSUE CONTOURING
- Chap. 57 COMBINED LIGHT AND BIPOLAR RADIOFREQUENCY
- Chap. 58 FRACTIONAL LASERS: GENERAL CONCEPTS
- Chap. 59 PALOMAR LUX 1,540-NM FRACTIONAL LASER
- Chap. 60 FRAXEL 1,550-NM LASER (FRAXEL RE:STORE)
- Chap. 61 1,440-NM FRACTIONAL LASER: CYNOSURE AFFIRM
- Chap. 62 SCITON ER:YAG 2,940-NM FRACTIONAL LASER
- Chap. 63 ALMA PIXEL ER:YAG FRACTIONAL LASER
- Chap. 64 FRACTIONATED CO2 LASER
- Chap. 65 LED PHOTOREJUVENATION DEVICES
- Chap. 66 PHOTOPNEUMATIC THERAPY
- Chap. 67 HAIR REMOVAL: LASER AND BROADBAND LIGHT DEVICES
- Chap. 68 ACNE AND ACNE SCARS: LASER AND LIGHT TREATMENTS
- Chap. 69 FAT AND CELLULITE REDUCTION: GENERAL PRINCIPLES
- Chap. 70 ULTRASHAPE FOCUSED ULTRASOUND FAT REDUCTION DEVICE
- Chap. 71 LIPOSONIX ULTRASOUND DEVICE FOR BODY SCULPTING
- PART FIVE OTHER PROCEDURES
- INDEX
Summary
Lasers utilizing wavelengths of 1,064, 1,320, 1,450, and 1,540 nm were the first nonablative resurfacing modalities. Utilizing technology to cool the surface to protect the epidermis, these lasers effectively heat the dermis selectively, to a limited degree, to stimulate new collagen formation and tightening. The nonablative lasers will be discussed primarily for skin rejuvenation, as other uses, such as for acne scarring and hair removal, are addressed in detail in other chapters. The 1,064-nm wavelength laser reviewed in this section is a long-pulse system, in contrast to the Q-switched units popular for tattoo removal.
The near-infrared lasers induce thermal injury in the dermis, potentially heating and damaging collagen to the point of denaturation. The rate of denaturation is exponentially related to temperature. Because of this relationship, small temperature changes impact denaturation dramatically. The accumulation of denatured material rises exponentially with temperature but proportionally with time, and thus both the amount of energy delivered and exposure duration are important. At critical temperatures, depending on the tissue type, rapid denaturation occurs. In the dermis, the extracellular collagen protein is the dominant material in coagulation (denaturing) because elastin is extremely thermally stable, even at the temperature of boiling water. The melting point for collagen is between 60 and 70 degrees Celsius, and above these temperatures, dermal scars can result. Thus temperature levels within the collagen are critical to causing mild injury, resulting in production of new collagen versus complete denaturation with resultant scarring.
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- Office-Based Cosmetic Procedures and Techniques , pp. 221 - 224Publisher: Cambridge University PressPrint publication year: 2010