Abstract:
:The influence of Er:YAG laser irradiation on periodontal tissues along the root surface and apical region during root canal preparation was histologically evaluated using experimentally infected root canals of rats. Eighty experimentally mesial infected root canals of mandibular first molars in rats were divided into four groups. In three groups, root canals were irradiated using an Er:YAG laser at 2 Hz with 34, 68, or 102 mJ/pulse for 30 s. Non-irradiated canals served as controls. The influence of laser irradiation on periodontal tissues along the root surface and apical area was evaluated histologically under light microscopy at 0 (immediately after), 1, 2, 4, and 8 weeks after irradiation. At all periods, no inflammation or resorption on the root surfaces caused by laser irradiation was observed in any cases in the control or 34 mJ/pulse-irradiated groups. However, mild to severe inflammation with resorption of root surfaces was observed in some cases in the 68- and 102-mJ/pulse-irradiated groups. No significant difference was apparent between control and laser-irradiated groups at the apical area for all experimental periods (p > 0.05). These results suggest that thermal influences on periodontal tissues of experimentally infected root canals during root canal preparation by Er:YAG laser irradiation are minimal if appropriate parameters are selected. Er:YAG laser irradiation is thus a potential therapy for human infected root canals.
journal_name
Lasers Med Scijournal_title
Lasers in medical scienceauthors
Kimura Y,Tanabe M,Imai H,Amano Y,Masuda Y,Yamada Ydoi
10.1007/s10103-010-0804-ysubject
Has Abstractpub_date
2011-11-01 00:00:00pages
749-54issue
6eissn
0268-8921issn
1435-604Xjournal_volume
26pub_type
杂志文章abstract::Bacterial biofilms are often found in chronically infected wounds. Biofilms protect bacteria from antibiotics and impair wound healing. Surgical debridement is often needed to remove the biofilm from an infected wound. Laser-generated shockwave (LGS) treatment is a novel tissue-sparing treatment for biofilm disruption...
journal_title:Lasers in medical science
pub_type: 杂志文章
doi:10.1007/s10103-020-03171-3
更新日期:2020-10-27 00:00:00
abstract::Low-level laser therapy (LLLT), widely used in physiotherapy, has been known to enhance wound healing and stimulate cell proliferation, including fibroblast and endothelial cells. Applying LLLT can increase cell proliferation in many kinds of cells including fibroblasts and endothelial cells. However, the protective m...
journal_title:Lasers in medical science
pub_type: 杂志文章
doi:10.1007/s10103-017-2364-x
更新日期:2018-02-01 00:00:00
abstract::The Nd:YAG laser efficacy associated with conventional treatment for bacterial reduction has been investigated throughout literature. The purpose of this study was to evaluate the bacterial reduction after Nd:YAG laser irradiation associated with scaling and root planning in class II furcation defects in patients with...
journal_title:Lasers in medical science
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1007/s10103-007-0482-6
更新日期:2008-10-01 00:00:00
abstract::The bactericidal activity of a pulsed fibre-optic Nd-YAP laser on various strains of oral bacteria: Prevotella nigrescens, Streptococcus sanguis, Actinomyces viscosus (i), Fusobacterium nucleatum, Actinobacillus actinomycetemcomitans and Peptostreptococcus micros (i) was evaluated. A 200-μm optical fibre was placed in...
journal_title:Lasers in medical science
pub_type: 杂志文章
doi:10.1007/s101030050010
更新日期:1998-12-01 00:00:00
abstract::Epithelial cells play an important role in reparative events. Therefore, therapies that can stimulate the proliferation and metabolism of these cells could accelerate the healing process. To evaluate the effects of low-level laser therapy (LLLT), human keratinocytes were irradiated with an InGaAsP diode laser prototyp...
journal_title:Lasers in medical science
pub_type: 杂志文章
doi:10.1007/s10103-012-1057-8
更新日期:2013-02-01 00:00:00
abstract::The traditional needle cricothyroidotomy procedure is performed blindly without any medical equipment. Complications including posterior tracheal wall perforation, accidental vessel puncture, and missed tracheal puncture are reported. Therefore, we proposed a dual-wavelength fiber-optic technique based on the techniqu...
journal_title:Lasers in medical science
pub_type: 杂志文章
doi:10.1007/s10103-020-03065-4
更新日期:2020-07-23 00:00:00
abstract::Previous studies have been suggested that photodynamic therapy (PDT) can be used as an adjuvant treatment for denture stomatitis. In this study, we evaluated the effects of multiple sessions of PDT on Candida glabrata biofilms in specimens of polymerized acrylic resin formed after 5 days. Subsequently, four applicatio...
journal_title:Lasers in medical science
pub_type: 杂志文章
doi:10.1007/s10103-017-2147-4
更新日期:2017-04-01 00:00:00
abstract::In root canal therapy, irrigating solutions are essential to assist in debridement and disinfection. Their spread and action is often restricted by canal anatomy, requiring some form of activation. Lasers have been shown to be promising tools for this purpose (laser-activated irrigation (LAI)). For LAI to be effective...
journal_title:Lasers in medical science
pub_type: 杂志文章
doi:10.1007/s10103-013-1307-4
更新日期:2014-09-01 00:00:00
abstract::The authors tested the diagnostic potential of the portable autofluorescence optical system that was developed in the preoperative evaluation of resection margins, and thus of the resection line safety in patients with low-positioned colorectal carcinoma. A total of 217 spectral measurements of the fluorescence proper...
journal_title:Lasers in medical science
pub_type: 杂志文章
doi:10.1007/s10103-010-0847-0
更新日期:2011-05-01 00:00:00
abstract::The aim of this study was to verify the maximum number of repetitions, fatigue index, blood lactate concentration ([Lac]), and cardiac autonomic responses after LED irradiation (LEDI) in the ipsilateral and contralateral limb. Twelve male subjects (22.0 ± 3.86 years; weight 82.94 ± 12.58 kg; height 1.77 ± 0.05 m), phy...
journal_title:Lasers in medical science
pub_type: 杂志文章,随机对照试验
doi:10.1007/s10103-017-2391-7
更新日期:2018-02-01 00:00:00
abstract::There are many laser technologies that are being tested that claim to support hair regrowth for patients with alopecia areata (AA). In this paper, we will determine whether the body of evidence supports the use of devices using monochromatic light sources to treat AA. Articles were gathered from PubMed, Embase, and th...
journal_title:Lasers in medical science
pub_type: 杂志文章,meta分析,评审
doi:10.1007/s10103-017-2412-6
更新日期:2018-02-01 00:00:00
abstract::Laser micromachining with ultrashort pulses has shown great promise for clean, safe surgical treatment of bone tissue. However, comparisons of performance and development of "best practice" have been hampered by the difficulty of comparing results across a wide variety of experimental approaches and under surgically i...
journal_title:Lasers in medical science
pub_type: 杂志文章
doi:10.1007/s10103-019-02899-x
更新日期:2020-08-01 00:00:00
abstract::The aim of this study was to evaluate the degree of conversion (DC) and to identify the viscoelastic properties: storage modulus (E'), loss modulus (E"), tangent delta (tan δ), and glass transition temperature (T g ) of a microhybrid resin-composite light-activated by three different protocols. A Filtek Z250 (3 M ESPE...
journal_title:Lasers in medical science
pub_type: 杂志文章
doi:10.1007/s10103-014-1572-x
更新日期:2015-05-01 00:00:00
abstract::One possible undesirable consequence of orthodontic therapy is the development of incipient caries lesions of enamel around brackets. The aim of this study was to compare the effects of CO2 (λ = 10.6 μm) and Nd:YAG (λ = 1,064 nm) lasers associated or not with topical fluoride application on the prevention of caries le...
journal_title:Lasers in medical science
pub_type: 杂志文章
doi:10.1007/s10103-013-1380-8
更新日期:2015-02-01 00:00:00
abstract::Induction of matrix synthesis by low-level laser has been demonstrated extensively. However, the question of dose- or power intensity-dependency is under-investigated. To address this issue we chose human osteoblast cell cultures and measured their alkaline phosphatase (ALP) activity after laser irradiation. The cell ...
journal_title:Lasers in medical science
pub_type: 杂志文章
doi:10.1007/s10103-007-0511-5
更新日期:2008-10-01 00:00:00
abstract::In the present study, we demonstrated the use of nanoporous zinc oxide (ZnO NPs) in photodynamic therapy. The ZnO NPs structure possesses a high surface to volume ratio due to its porosity and ZnO NPs can be used as an efficient photosensitizer carrier system. We were able to grow ZnO NPs on the tip of borosilicate gl...
journal_title:Lasers in medical science
pub_type: 杂志文章
doi:10.1007/s10103-011-0989-8
更新日期:2012-05-01 00:00:00
abstract::The effect of phototherapy with 890-nm light-emitting diodes (LEDs) on the healing of experimentally induced tendinitis in sheep was evaluated in this study. Partial tenotomies measuring 0.2 cm wide × 0.5 cm long were performed on the second third of the superficial digital flexor tendons of 10 healthy sheep. The anim...
journal_title:Lasers in medical science
pub_type: 杂志文章
doi:10.1007/s10103-014-1641-1
更新日期:2015-01-01 00:00:00
abstract::The purpose of this study is twofold: (1) to determine the feasibility of optical coherence tomography (OCT) to differentiate normal and diseased tissue of the neck region intraoperatively and (2) to evaluate how accurately a cohort of test subjects can identify various tissue types when shown a sample set of OCT imag...
journal_title:Lasers in medical science
pub_type: 杂志文章
doi:10.1007/s10103-020-03024-z
更新日期:2020-04-27 00:00:00
abstract::Recent studies have investigated whether low level laser therapy (LLLT) can optimize human muscle performance in physical exercise. This study tested the effect of LLLT on muscle performance in physical strength training in humans compared with strength training only. The study involved 36 men (20.8±2.2 years old), cl...
journal_title:Lasers in medical science
pub_type: 杂志文章,随机对照试验
doi:10.1007/s10103-010-0855-0
更新日期:2011-05-01 00:00:00
abstract::Low-energy laser irradiation (Ga-Al-As semiconductor laser, output 50 mW) was applied to rat osteoclast precursor cells for 1, 3, 6, or 10 min at 24-h intervals during the culture period. The number of tartrate-resistant acid phosphatase positive multinucleate cells was increased by approximately 1.3-fold in the 3- an...
journal_title:Lasers in medical science
pub_type: 杂志文章
doi:10.1007/s10103-005-0368-4
更新日期:2006-04-01 00:00:00
abstract::In view of the limitations of bone reconstruction surgeries using autologous grafts as a gold standard, tissue engineering is emerging as an alternative, which permits the fabrication and improvement of scaffolds to stimulate osteogenesis and angiogenesis, processes that are essential for bone repair. Polymers are use...
journal_title:Lasers in medical science
pub_type: 杂志文章
doi:10.1007/s10103-019-02864-8
更新日期:2020-06-01 00:00:00
abstract::5-aminolevulinic acid-mediated photodynamic therapy (ALA-PDT) provides a novel and promising treatment for esophageal cancer. However, its specific mechanism has not been fully elucidated and its efficacy is remarkably varied. This study investigated the effect of ALA-PDT on esophageal squamous carcinoma cell line Eca...
journal_title:Lasers in medical science
pub_type: 杂志文章
doi:10.1007/s10103-010-0810-0
更新日期:2011-01-01 00:00:00
abstract:INTRODUCTION:In-transit cutaneous malignant melanoma metastases remains a difficult and distressing disease. It is a sequela to the primary lesion represented by melanoma deposits between the site of excision and the draining lymph nodes. We present our experience of carbon dioxide ablation of in-transit cutaneous mali...
journal_title:Lasers in medical science
pub_type: 杂志文章
doi:10.1007/s10103-008-0580-0
更新日期:2009-05-01 00:00:00
abstract::Laser therapy has proved effective in the treatment of different tissue injuries but little is known about its effect on the testis. The aim of this review was to synthesize research on the in vivo effect of low-level laser therapy on the seminiferous epithelium. A search was performed in the PubMed/Medline, Scopus, W...
journal_title:Lasers in medical science
pub_type: 杂志文章,评审
doi:10.1007/s10103-020-03122-y
更新日期:2020-08-19 00:00:00
abstract::Skin flaps are still a matter of concern among surgeons, as failures can occur leading to flap necrosis. However, low-level laser irradiation has been reported as an effective tool to improve the viability of ischemic flaps, yet its mechanisms of action remain unclear. We investigated the effect of low-level laser irr...
journal_title:Lasers in medical science
pub_type: 杂志文章
doi:10.1007/s10103-011-1011-1
更新日期:2012-05-01 00:00:00
abstract::The aim of the present study was to evaluate the antimicrobial effect of antimicrobial photodynamic therapy (aPDT) in alveolar treatment of areas with induced periodontitis. Thirty male Wistar rats were subjected to ligature-induced periodontal disease (PD) in the first left inferior molars, while the right side molar...
journal_title:Lasers in medical science
pub_type: 杂志文章
doi:10.1007/s10103-013-1400-8
更新日期:2015-02-01 00:00:00
abstract::In the application of lasers in dentistry, there is a delicate balance between the benefits gained from laser treatment and the heat-related damage arising from laser irradiation. Hence, it is necessary to understand the different processes associated with the irradiation of lasers on dental materials. To obtain insig...
journal_title:Lasers in medical science
pub_type: 杂志文章
doi:10.1007/s10103-017-2251-5
更新日期:2017-08-01 00:00:00
abstract::Unlike other rosacea therapies which need daily takings or applications over long periods, the edge of lasers and light-based therapies (LLBT) is the limited number of sessions to achieve improvement. The proper selection of the adequate physical device in accordance with the patients' skin features and rosacea-relate...
journal_title:Lasers in medical science
pub_type: 杂志文章,评审
doi:10.1007/s10103-020-03200-1
更新日期:2021-01-03 00:00:00
abstract::The biodistribution and pharmacokinetics of meta-tetra(hydroxyphenyl)chlorin (mTHPC)(1) have been documented in humans, rats, dogs and rabbits. It has been demonstrated to be an effective photodynamic therapy agent for treatment of squamous cell carcinoma. Squamous cell carcinoma is a common feline neoplasm, causing s...
journal_title:Lasers in medical science
pub_type: 杂志文章
doi:10.1007/s101030200014
更新日期:2002-01-01 00:00:00
abstract::This study aimed to evaluate the effects of low-level laser therapy (LLLT) immediately before tetanic contractions in skeletal muscle fatigue development and possible tissue damage. Male Wistar rats were divided into two control groups and nine active LLLT groups receiving one of three different laser doses (1, 3, and...
journal_title:Lasers in medical science
pub_type: 杂志文章
doi:10.1007/s10103-014-1560-1
更新日期:2014-09-01 00:00:00