Abstract:
BACKGROUND AND OBJECTIVES:To investigate the morphology of cementum and root dentin after Er:YAG laser irradiation with and without water coolant, compared to that after CO(2) laser irradiation and an untreated surface. STUDY DESIGN/MATERIALS AND METHODS:Ten extracted healthy human teeth were used. Er:YAG and CO(2) lasers were applied with energy outputs of 0.4 W, with and without coolant and 0.5 W, without coolant, respectively. Scanning electron microscopy (SEM) analysis was performed at high and ultra-high magnifications. RESULTS:The surface of cementum was micro-irregular with numerous projections while that of dentin appeared scaly after Er:YAG laser irradiation. Unlike after CO(2) laser treatment, no major melting or cracking was observed with Er:YAG laser treatment. The use of water spray produced fine micro-irregularities without attached debris. Ultra-high magnification revealed similar microparticles-composed aspects for both cementum and dentin. However, the more porous structure of the surface was observed after Er:YAG laser irradiation without water spray. CONCLUSIONS:Cementum and root dentin presented distinct micro-roughness after Er:YAG laser irradiation, possibly due to structural differences in the original tissue. However, under ultra-high magnifications, both cementum and dentin presented similar characteristics of the irradiated surface. In addition, the use of water spray during laser irradiation minimized thermal effects and resulted in a cleaner and less porous surface.
journal_name
Lasers Surg Medjournal_title
Lasers in surgery and medicineauthors
Sasaki KM,Aoki A,Ichinose S,Ishikawa Idoi
10.1002/lsm.10074subject
Has Abstractpub_date
2002-01-01 00:00:00pages
79-85issue
2eissn
0196-8092issn
1096-9101journal_volume
31pub_type
杂志文章abstract:BACKGROUND AND OBJECTIVE:Acne scarring is a common complication of acne but no effective single treatment modality has been developed. To compare the efficacy of 1,550 nm Er:Glass fractional laser and chemical reconstruction of skin scar (CROSS) method in the treatment of acne scars. STUDY DESIGN/MATERIALS AND METHODS...
journal_title:Lasers in surgery and medicine
pub_type: 临床试验,杂志文章
doi:10.1002/lsm.20796
更新日期:2009-10-01 00:00:00
abstract:BACKGROUND AND OBJECTIVES:To functionally evaluate the efficacy of glatiramer acetate (Cop-1) as a neuroprotective treatment for laser-induced retinal injuries in rats. STUDY DESIGN/MATERIALS AND METHODS:Using standard lasering and flash ERG techniques, we evaluated the effect of photocoagulation and of Cop-1 treatmen...
journal_title:Lasers in surgery and medicine
pub_type: 杂志文章
doi:10.1002/lsm.20610
更新日期:2008-03-01 00:00:00
abstract:BACKGROUND AND OBJECTIVES:Terawatt (TW) lasers have become commonplace since the development of the chirped-pulse amplification method using Ti:sapphire and Nd:glass laser rods. We have measured the minimum visible lesion (MVL) thresholds for porcine1The animals involved in this study were procured, maintained, and use...
journal_title:Lasers in surgery and medicine
pub_type: 杂志文章
doi:10.1002/lsm.20195
更新日期:2005-07-01 00:00:00
abstract:BACKGROUND AND OBJECTIVES:Chronic sun-exposure results in five main changes to exposed skin: telangiectasia, hyperpigmentation, rhytides, enlarged pores, and sagging skin. Various laser and non-laser modalities have been used to improve sun-damaged skin. The pulsed-dye laser (PDL) has an unparalleled safety record and ...
journal_title:Lasers in surgery and medicine
pub_type: 杂志文章
doi:10.1002/lsm.20463
更新日期:2007-02-01 00:00:00
abstract:BACKGROUND AND OBJECTIVES:To test whether autofluorescence spectroscopy can be used for the diagnosis of oral neoplasia in a high-risk population, we characterized the in vivo autofluorescence spectra from oral submucous fibrosis (OSF) lesions and oral premalignant and malignant lesions in both OSF and non-OSF patients...
journal_title:Lasers in surgery and medicine
pub_type: 杂志文章
doi:10.1002/lsm.10180
更新日期:2003-01-01 00:00:00
abstract:BACKGROUND AND OBJECTIVES:Intense pulsed light (IPL) is regarded as the gold standard of nonablative photo-rejuvenation. Yet there is still a need to observe its efficacy and safety on dark skin using a split-face module. STUDY DESIGN/MATERIALS AND METHODS:Twenty-four Chinese women with photoaging were enrolled in thi...
journal_title:Lasers in surgery and medicine
pub_type: 杂志文章,随机对照试验
doi:10.1002/lsm.20889
更新日期:2010-02-01 00:00:00
abstract:BACKGROUND AND OBJECTIVE:Despite the successful application of laser in animal experiments and clinics, the adjustment of laser parameters during surgery is still unclear. This study aimed to investigate the effect of different 980-nm diode laser parameters in hepatectomy. This could provide a clear protocol for using ...
journal_title:Lasers in surgery and medicine
pub_type:
doi:10.1002/lsm.23101
更新日期:2019-10-01 00:00:00
abstract:INTRODUCTION:Leg telangiectasias have been reported to have been treated with a variety of lasers. This study was designed to measure response to treatment of leg telangiectasias with a unique coupled 585 nm and 1064 nm pulse. METHODS:Sixty female patients (24-62 y.o., skin types II-IV) with leg vein varicosities were...
journal_title:Lasers in surgery and medicine
pub_type: 杂志文章
doi:10.1002/lsm.20972
更新日期:2010-11-01 00:00:00
abstract::For our study of the effect of low energy laser irradiation (LELI) on living tissue we used HeNe laser on rats. The exponential absorption was reaffirmed in the living tissues overlying the sciatic nerve. An optimal range of energy between 3.5 and 7 J--associated with energy concentration of 4-10 J/cm2 delivered trans...
journal_title:Lasers in surgery and medicine
pub_type: 杂志文章
doi:10.1002/lsm.1900060502
更新日期:1986-01-01 00:00:00
abstract:BACKGROUND AND OBJECTIVES:The risk of adverse skin effects following light-based hair removal is greater in pigmented skin based on the theory of selective photothermolysis. Thus sunlight-induced pigment i.e., facultative pigmentation, increases the risk of adverse skin effects, perhaps disproportionately. The aim of t...
journal_title:Lasers in surgery and medicine
pub_type: 杂志文章,随机对照试验
doi:10.1002/lsm.22167
更新日期:2014-02-01 00:00:00
abstract:BACKGROUND AND OBJECTIVE:Although the empirical characteristics of ArF excimer laser corneal ablation have been well documented, the exact ablation mechanisms are not well understood. The present paper reports a quantitative analysis of corneal ablation plumes using in situ time resolved laser light scattering and Rama...
journal_title:Lasers in surgery and medicine
pub_type: 杂志文章
doi:10.1002/lsm.1900160410
更新日期:1995-01-01 00:00:00
abstract:BACKGROUND AND OBJECTIVES:The risks of currently available invasive procedures in body contouring motivate a need for safer, non-invasive technologies for improving the appearance of body silhouette. A new device has been developed that uses focused therapeutic ultrasound to reduce adipose tissue non-invasively. The ai...
journal_title:Lasers in surgery and medicine
pub_type: 临床试验,杂志文章
doi:10.1002/lsm.20478
更新日期:2007-04-01 00:00:00
abstract:BACKGROUND AND OBJECTIVE:The aim of this study was to evaluate the efficacy and safety of the intense pulsed light source (IPL) and the Nd:YAG laser in the treatment of facial rhytids. Both systems can be used in a non-ablative manner and cause a dermal wound. This is thought to stimulate the production of new collagen...
journal_title:Lasers in surgery and medicine
pub_type: 临床试验,杂志文章
doi:10.1002/lsm.1029
更新日期:2001-01-01 00:00:00
abstract:BACKGROUND AND OBJECTIVES:Previously, we have shown that a 43°C pretreatment can provide thermotolerance to a following, more severe, thermal stress at 45°C. Using cells that lack the Hsp70 gene, we have also shown that there is still some thermotolerance in the absence of HSP70 protein. The purpose of this study was t...
journal_title:Lasers in surgery and medicine
pub_type: 杂志文章
doi:10.1002/lsm.20983
更新日期:2010-12-01 00:00:00
abstract:BACKGROUND AND OBJECTIVES:Complete neurosurgical resection of intracranial meningiomas is essential to avoid residual tumor tissue and thus minimize the risk of tumor recurrence. However, local recurrence of meningiomas is not uncommon mainly due to insufficient intraoperative detection of residual tumor tissue within ...
journal_title:Lasers in surgery and medicine
pub_type: 杂志文章
doi:10.1002/lsm.23294
更新日期:2020-07-01 00:00:00
abstract:BACKGROUND AND OBJECTIVES:The conventional pulsed-dye laser (wavelength 585 nm, pulse duration 0.5 milliseconds) is seen as the standard treatment for port wine stains (PWS). Using the pulsed-dye laser at wavelengths of 590, 595, and 600 nm and at varying pulse durations of 1.5-40 milliseconds is one of the newest deve...
journal_title:Lasers in surgery and medicine
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1002/lsm.20003
更新日期:2004-01-01 00:00:00
abstract:BACKGROUND:The treatment of acne scars with fractional CO(2) lasers is gaining increasing impact, but has so far not been compared side-by-side to untreated control skin. OBJECTIVE:In a randomized controlled study to examine efficacy and adverse effects of fractional CO(2) laser resurfacing for atrophic acne scars com...
journal_title:Lasers in surgery and medicine
pub_type: 杂志文章,随机对照试验
doi:10.1002/lsm.22048
更新日期:2012-08-01 00:00:00
abstract:BACKGROUND AND OBJECTIVES:Biofilm-related diseases such as caries and periodontal disease are prevalent chronic oral infections which pose significant oral and general health risks. Biofilms are sessile communities attached to surfaces. Photodynamic therapy (PDT) has been demonstrated to have a significant anti-microbi...
journal_title:Lasers in surgery and medicine
pub_type: 杂志文章
doi:10.1002/lsm.22050
更新日期:2012-09-01 00:00:00
abstract::The feasibility of using a pulsed dye laser in angioplasty for detection and disintegration of calcified plaques was studied in vitro. A flashlamp-pumped dye laser (495 nm, 2 microseconds) was used as the exciting source for laser-induced-fluorescence (LIF) signals. Spectral data in the 520 nm to 800 nm region of norm...
journal_title:Lasers in surgery and medicine
pub_type: 杂志文章
doi:10.1002/lsm.1900110207
更新日期:1991-01-01 00:00:00
abstract:BACKGROUND AND OBJECTIVES:For Asian skin, recent "non-ablative" skin rejuvenation techniques have become the focus of attention for darker complected patients. In our earlier research, we have shown that intense pulsed light (IPL) technology can be applied to Asian skin with a high degree of safety and efficacy. In thi...
journal_title:Lasers in surgery and medicine
pub_type: 杂志文章
doi:10.1002/lsm.10036
更新日期:2002-01-01 00:00:00
abstract:BACKGROUND AND OBJECTIVE:LED photomodulation has been shown to profoundly influence cellular behavior. A variety of parameters with LED photomodulation can alter cellular response in vitro. The effects of one visible and one infrared wavelength were evaluated to determine the optimal ratio to produce a net increase in ...
journal_title:Lasers in surgery and medicine
pub_type: 杂志文章
doi:10.1002/lsm.20947
更新日期:2010-08-01 00:00:00
abstract:BACKGROUND AND OBJECTIVES:CO2 laser cordectomy has been the workhorse of laser surgery for early glottic squamous cell carcinoma (GSCC) since the early 1970s. During the last decades, potassium titanyl phosphate (KTP) laser surgery for early GSCC gained popularity, introducing the tumor ablation technique. Yet, there a...
journal_title:Lasers in surgery and medicine
pub_type:
doi:10.1002/lsm.23202
更新日期:2020-09-01 00:00:00
abstract::Methods used to revascularize ischemic myocardium have included arterial reconstruction, coronary artery bypass grafting, providing direct circulation from the intraventricular chamber, and techniques to promote collateral circulation. Ventricular channels from the epicardial surface through the endocardium are readil...
journal_title:Lasers in surgery and medicine
pub_type: 杂志文章
doi:10.1002/lsm.1900030307
更新日期:1983-01-01 00:00:00
abstract:OBJECTIVE:Owing to skin aging and the growing demand for skin rejuvenation, minimal invasive aesthetic treatments such as laser procedures are increasingly coming into focus. However, until now, little has been known about the objective effects of these procedures with respect to skin microcirculation or changes in ski...
journal_title:Lasers in surgery and medicine
pub_type: 临床试验,杂志文章
doi:10.1002/lsm.22710
更新日期:2017-12-01 00:00:00
abstract:BACKGROUND AND OBJECTIVES:Nitrogen laser-induced fluorescence (LIF) spectra of sound tooth consists of two broad bands centered at 440 and 490 nm, with two apparent side bands on either side. In order to locate the exact peak position of these bands and to effectively utilize the LIF spectral signatures for detection o...
journal_title:Lasers in surgery and medicine
pub_type: 杂志文章
doi:10.1002/lsm.20229
更新日期:2005-10-01 00:00:00
abstract:BACKGROUND AND OBJECTIVE:Concerning current clinical practice, laser-assisted lipoplasty is still secondary to other procedures. In order to evaluate effects of thermal interaction with fatty-tissue, a near infrared diode laser was examined under reproducible conditions. METHODS:Based on optical spectroscopy of fatty-...
journal_title:Lasers in surgery and medicine
pub_type: 杂志文章
doi:10.1002/lsm.20602
更新日期:2008-02-01 00:00:00
abstract::New instruments to facilitate laser operations are presented. These devices are based on the Kocher bronchocoele sound and are useful as dissecting tools and optical backstops to prevent iatrogenic injury. ...
journal_title:Lasers in surgery and medicine
pub_type: 杂志文章
doi:10.1002/lsm.1900100613
更新日期:1990-01-01 00:00:00
abstract:BACKGROUND AND OBJECTIVES:Intra-operative identification of tumor by fluorescence may improve surgical resection or photodynamic therapy (PDT). A novel instrument was designed, constructed, and tested for this purpose. STUDY DESIGN/MATERIALS AND METHODS:The instrument was designed to provide high-resolution, multi-spe...
journal_title:Lasers in surgery and medicine
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1002/lsm.10131
更新日期:2003-01-01 00:00:00
abstract:BACKGROUND AND OBJECTIVE:Very few treatments for striae are based on prospective randomized trials. The objective of this study was to assess the efficacy of bipolar fractional radiofrequency and bipolar radiofrequency potentiated with infrared light, alone or combined, for treating abdominal stretch marks. STUDY DESI...
journal_title:Lasers in surgery and medicine
pub_type: 杂志文章,多中心研究,随机对照试验
doi:10.1002/lsm.22458
更新日期:2016-03-01 00:00:00
abstract::We used a Q-switched Nd:YAG laser with non-linear optical crystals to produce the 5th (213 nm) and the 4th (266 nm) harmonic frequencies. Using these two wavelengths, we ablated fresh porcine corneas and type I collagen synthetic epikeratoplasty lenticules. For the 213-nm ablation, radiant exposure was 1.3 J/cm2. The ...
journal_title:Lasers in surgery and medicine
pub_type: 杂志文章
doi:10.1002/lsm.1900110610
更新日期:1991-01-01 00:00:00