treatment- treated with Er:YAG laser

Top PDF treatment- treated with Er:YAG laser:

Study Regarding the Use of Er: YAG Laser for Initial Treatment of Periodontal Disease

Study Regarding the Use of Er: YAG Laser for Initial Treatment of Periodontal Disease

4 Grigore.T.Popa University of Medecine and Pharmacy, Faculty of Dental Medicine, Departament of Oro-Maxilo-Facial Surgery, 16,Universitãtii Str., 700115 Iasi, Romania We have set the goal of our study to follow the clinical indicators for successful treatment and periodontal stability after nonsurgical therapy of patients with chronic periodontal disease, using the Lite Touch ER: YAG laser, versus conventional, mechanical - hand instrumentation. The split mouth design was performed on 20 patients at age ≥ 35 years with chronic periodontitis and 68 teeth with clinical attachment loss ≥ 5 mm were included. In each contralateral pair one tooth was treated with “closed curetage” i.e. gingival curettage followed by SRP (scaling and root planning) using ultrasonic and hand instruments, while the other were treated with laser assisted gingival curettage followed by laser assisted SRP (scaling and root planning) using Lite Touch Er: YAG laser. Dental plaque (DP), papilla bleeding index (PBI), clinical attachment level (CAL), gingival recession (GR), periodontal probing depth (PPD) and bone loss were assessed at the baseline visit and 3 months following therapy. After three months iterative comparison of the data was made showing statistically highly significant difference between patients treated classically with mechanical debridement and laser (p < 0.01) for PBI, PPD, CAL, GR and bone level. The obtained result, using the above mention laser settings, puts the Lite Touch™ Er: YAG laser as an efficient therapeutic tool for closed curettage and therapy of choice in the treatment of the chronic periodontitis.
Show more

5 Read more

Visual outcome of Patients with Posterior Capsular Opacification Treated with Nd: YAG Laser

Visual outcome of Patients with Posterior Capsular Opacification Treated with Nd: YAG Laser

Neodymium: Yttrium Aluminium Garnet (Nd: YAG) laser is used in the treatment of posterior capsule opacification (PCO) to improve visual acuity. PCO causes significant reduction in visual acuity in patients that had cataract surgery. This study is aimed at determining the visual outcome of patients who received Nd YAG laser following PCO. The medical records of patients seen at the eye clinic of Ekiti State University Teaching Hospital, Ado Ekiti between January 2010 and June 2012 with the diagnosis of posterior capsular opacification (PCO) after cataract extraction and had Nd YAG laser capsulotomy were reviewed. Demographic data, pre and post laser visual acuity, type of cataract surgery and the period of interval between surgery and diagnosis of PCO were extracted and analysed.
Show more

5 Read more

Clinical Efficacy Evaluation of Er: YAG Laser
Treatments for Obstructive Sleep Apnea Hypopnea
Syndrome

Clinical Efficacy Evaluation of Er: YAG Laser Treatments for Obstructive Sleep Apnea Hypopnea Syndrome

We investigated patient satisfaction after each Er:YAG laser treatment, and the results showed good satisfaction. Specifically, the proportion of satisfied and very satisfied patients increased with the progress of treatment. The satisfaction rate of the latter two treatments reached over 90% when the treatment was completed, indicating that the patients demonstrated good acceptance for the minimally invasive Er:YAG laser treatment of OSAHS. This laser therapy is non-ablative, and the mechanism of action is a photothermal effect causing heating of the treated areas to a well-controlled temperature [9]. A clinical study has proven that the scanning irradiation with an Er:YAG laser does not burn the mucosa tissue in the oropharynx because the temperature of the treated area was 41.5°C [10]. In another animal study, no exposed wound, bleeding, or macroscopic necrosis were observed in the Er:YAG laser irradiation area after sacrificing the animals, and the researchers noted a submucosal thermal effect at a depth of 0.4 mm with most of the epithelial tissue preserved histopathological [28]. This effect may be the reason for the lower incidence of palatal paresthesia and less pain in patients after being treated with OSAHS by Er:YAG laser in the present study. The pharyngeal dryness in most patients may be related to the absorption of laser heat by water in the mucosa as well as the loss of water caused by the mouth being open for a long time.
Show more

7 Read more

YAG laser iridotomy treatment for primary angle closure in east Asian eyes

YAG laser iridotomy treatment for primary angle closure in east Asian eyes

The outcome of the cases in this study was related to the stage of disease at diagnosis. Forty seven per cent of eyes with glaucomatous optic neuropathy were classed as treatment failures on grounds that IOP was poorly controlled or visual acuity had deteriorated due to progression of glaucoma. Three per cent of PAC eyes were found to have glaucomatous optic neuropathy at follow up, but there were other features such as pseudoexfoliation to explain a poor prognosis. None of the PACS eyes su V ered symptomatic angle closure or glaucomatous optic neuropathy. It appears that once extensive synechial angle closure and glaucomatous optic neuropathy have devel- oped, an iridotomy will be less likely to reduce IOP and protect visual function than in eyes treated at an earlier stage. However, it must be acknowledged that this finding could be explained by the phenomenon of “lead time bias”. This form of bias can result in an appar- ent increase in survival or, in the case of glau- coma, increased time to loss of visual function in a case detected and treated at an early stage of the disease process. The real time from inci- dence of disease to visual function loss or blindness in such a case may be no di V erent from that of a case detected at a more advanced stage. 15
Show more

5 Read more

Treatment of Verrucous Epidermal Nevus Using Long Pulsed Nd: YAG Laser

Treatment of Verrucous Epidermal Nevus Using Long Pulsed Nd: YAG Laser

Sidwell et al [13] explained the success of pulsed dye laser in treatment of ILVEN by destruction of the dermal capillaries based on the theory of selective photothermolysis [20] and the reduction in the number of capillaries and inflammatory mediators reaching the epidermis supports this idea [19]. Two aspects can explain the mechanism of action of long pulsed Nd: YAG laser in treatment of VEN. First, ILVEN and VEP share the histopathological features of dermal involvement with a lymphohistiocytic inflammatory infiltration and dilated blood capillaries of the upper dermis [4].The Second explanation; oxyhemoglobin is a chromophore which absorbs both wavelengths; 585nm pulsed dye laser and to a lesser degree, the 1064nm Nd: YAG laser; allowing the 1064nm wavelength to penetrate deeper (from 3.7 up to 6 mm) into tissue than visible light, enabling heat delivery to occur more deeply into the dilated blood vessels [14]. Thus, selective thermal photocoagulation of dermal blood capillaries of VEN leads to regression of lesions that was elicited clinically, and confirmed histologically, where marked reduction in epidermal thickness and number of blood vessels was observed after end of treatment. Nd: YAG wavelength allows even deeper penetration into the dermis with relative sparing of the epidermis and because of the minimal-energy absorption by melanin occurs at this wavelength, darker skin types can be treated with minimal risk to the epidermis [14,17]. During the treatments the epidermis was effectively protected by the chilled cooling head of the laser’s hand piece that is a component of this laser equipment thus, excellent pre-operative, and
Show more

16 Read more

INVESTIGATION OF ANTIBACTERIAL ACTIVITY OF ND: YAG - LASER AND STANDARD ENDO- DONTIC TREATMENT

INVESTIGATION OF ANTIBACTERIAL ACTIVITY OF ND: YAG - LASER AND STANDARD ENDO- DONTIC TREATMENT

After in vivo therapy with Nd: YAG laser 34% of un- treated etiological agents remain. Reduction of these mi- crobial species again from KES, Enterobacter spp., Kleb- siella spp. is about 2 log, but they remain at a microbial number of approximately 1000 cfu / ml. Unlike the other method, there is a lack of complete eradication in some other more sensitive bacterial species, as well. (Table 4)

5 Read more

Retrospective Evaluation of Nd: YAG Laser Application with Visual Analog Scale in the Treatment of Dentin Hypersensitivity

Retrospective Evaluation of Nd: YAG Laser Application with Visual Analog Scale in the Treatment of Dentin Hypersensitivity

and the first year control time. 2. MATERIALS AND METHODS As a result of the power analysis performed on the retrospective planned study; 95% power, 0.05 sensitivity, sample size was determined as 16 patients. Of the 26 patients who applied to Ondokuz Mayis University Faculty of Dentistry Department of Periodontology with the complaint of dentin sensitivity between 2017 and 2019, data for 90 teeth affected by DH from 16 (13 female, 3 male) patients who were treated with Nd: YAG laser and met the working conditions were examined. However, broken teeth, deep restorations, crowns and abutments are also excluded. Patients who had DH complaints for a long time and who were still uncomfortable despite using toothpastes with high fluoride content were included in the study. Patients who had supragingival and subgingival scaling and root planıng two weeks before laser application in order to avoid confusion with dentin sensitivity that may occur due to periodontal disease were included in the study. In addition, the polishing process was applied just before the application, considering that the decrease in the effectiveness of laser application can be prevented. Before the laser application, the pain levels were determined using the VAS values. By spraying cold air (at a temperature of 21-22 degrees with a pressure of 55-60 psi) with air spray for 1-2 seconds at a right angle with air spray to 6 different regions of the teeth(mesiobuccal, distobuccal, midbuccal, mesiolingual, distolingual and midlingual) with DH, the patient's pain degree was asked to be evaluated over 10, and these values were averaged. In order to prevent false positive results, the teeth other than the measured tooth are insulated with cotton rolls. Routine follow-ups of the patients were made at regular intervals
Show more

8 Read more

Long-pulsed Nd : YAG laser: does it give clinical benefit on the treatment of resistant telangiectasia?

Long-pulsed Nd : YAG laser: does it give clinical benefit on the treatment of resistant telangiectasia?

All patients underwent a single treatment session using long- pulsed Nd : YAG (MultiFlex, Ellipse A ⁄ S , Denmark). Surface cooling was supplied by a focused stream of cool air (SoftCool) to reduce pain during treatments and minimize the risk of possible epidermal damage. Before applying laser on the treatment site, dilated vessel diameters were measured with a transparent vein gauge provided with the laser machine. For vessel diameter of 0.1 mm, the treatment parameter was set as followed: 8.0 ms of pulse width and 199.6–216.7 J ⁄ cm 2 of fluence with 1.5 mm spot. The larger dilated vessels of 0.2–0.3 mm in diameter were treated with 12.0 ms pulse width and 237.1–261.4 J ⁄ cm 2 of fluence using 1.5 mm spot. Before laser irradiation, refrigerated optical coupling gel was applied evenly on the treated site. When the vessel was treated with the laser, the immediate vessel responses were meticu- lously tracked down. If the vessel immediately vanished, the next laser shot was applied at the point where the vanishing point stopped. If the vessel did not show any response at the first shot, the fluence was raised to the next level (10–20 J ⁄ cm 2 higher in
Show more

5 Read more

SLT Long Pulse Nd: YAG Laser for the Treatment of Leg Veins and Benign Vascular Lesions

SLT Long Pulse Nd: YAG Laser for the Treatment of Leg Veins and Benign Vascular Lesions

In fact, lasers have largely become the treatment of choice for vascular birthmarks such as hemangiomas and port-wine stains and the definitive treatment of rosacea. The range of congenital and acquired benign vascular lesions effectively treated with lasers continues to expand and is described by the principle of selective photothermolysis. In the case of vascular specific laser systems, the intended target is intravascular oxyhemoglobin.

6 Read more

Mixed-Type Melasma Treated with Low Fluence Q-Switched Nd-YAG 1064 nm Laser: A Case Report

Mixed-Type Melasma Treated with Low Fluence Q-Switched Nd-YAG 1064 nm Laser: A Case Report

ABSTRACT Background: Melasma is an acquired, chro- nic hypermelanosis condition. Melasma is more common in women of all races and occur espe- cially on the face. The pathogenesis of melasma is very complex and the treatment is still a challenge. The purpose of this study was to report mixed-type melasma treated with low fluence Q-switched Nd-YAG 1064 nm laser.

7 Read more

CHANGES IN INTRAOCULAR PRESSURE AFTER ND-YAG LASER POSTERIOR CAPSULOTOMY

CHANGES IN INTRAOCULAR PRESSURE AFTER ND-YAG LASER POSTERIOR CAPSULOTOMY

Background: The posterior capsule opacification (PCO) is also known as after catract is a common complication after planned extra capsular cataract extraction (ECCE) with or without intraocular lens (IOL) implantation. The aim of this study was to evaluate the changes in intraocular pressure(IOP) after Nd-Yag laser posterior capsulotomy(LPC) for PCO. The Nd-Yag LPC is a safe and non- invasive procedure and can be performed as an outpatient procedure. Patients & Methods: A total of one hundred eyes with symptomatic intact posterior capsule opacification (PCO) at Glaucoma Department of Alyarmouk Teaching Hospital fulfilling the inclusion criteria were enrolled in the study over a period of 6 months, 64 eyes were aphakic and 36 eyes were pseudophakic, the fellow eye was used as control. The base line pre-laser IOP was measured with the help of Goldmann Applanation Tonometer (GAT) and slit lamp examination before procedure. The pupils were dilated by using 1% tropicamide eye drops. Proparacaine eye drops were used 1-2 times for topical anesthesia, using Nd: YAG laser (VISULAS YAG III Carl Zeiss Meditec AG Germany), an opening of 3-4 mm was made in the posterior lens capsule, ensuring use of least possible energy. IOP was again assessed 1 hours, 24 hour and one week after the procedure. Results: IOP was checked before laser, at one hour, 24 hour and one week after laser. There was statistically significant (P<0. 001) rise in IOP at one hour in both aphakic and pseudophakic groups from a mean of 12.54 mmHg before laser to a mean of 20.79 mmHg at one hour with an average of 8.35 mmHg from baseline measurement. IOP at one hour rises from 2-5 mmHg in 30 eyes (30%), >5mmHg in 46 eyes (46%) and >10mmHg in 24 eyes (24%). Every patient had an IOP at one hour equal to or greater than 22 mmHg received anti-glaucoma drugs to control the rise in IOP. At 24 hours IOP decreased to a mean of 13.24 mmHg in both groups. No distinction was made between the aphakic and the pseudophakic groups with regard to IOP changes. In all treated eyes, best corrected visual acuity (VA) was recorded before and at one week after Nd-Yag laser application by Snellen's chart. After performing a central capsulotomy VA increased in all patients. In no eye was the post-laser VA lower than before laser treatment. Conclusion: Photo-disruption with Nd-Yag laser is a safe and an effective method in management of PCO. However, there are several complications known to follow capsulotomy as significant rise in IOP and only if we can minimize their frequency or, better still, avoid them altogether, can we accept Nd-Yag LPC as a safe procedure in our effort to restore vision in cases of PCO.
Show more

12 Read more

Effect of Er: YAG Laser on Cavity Preparation and Surface Treatment in Terms of Microleakage

Effect of Er: YAG Laser on Cavity Preparation and Surface Treatment in Terms of Microleakage

MATERIALS AND METHODS Tooth Preparation The present study was an in vitro study. A total of 80 caries and restoration free human third molars, extracted as a part of dental treatment in the Oral Surgery Department, were used in the study after having obtained informed consent from the subjects. Following the extraction, residual soft tissues on the root surfaces were removed with a scaler and the teeth were cleaned with pumice- water slurry using a low-speed handpiece. The cleaned teeth were stored in distilled water at 4°C for a maximum of six months until their use. The specimens were randomly divided into eight groups of 10 teeth each according to cavity preparation and adhesive treatment modalities: Group 1: Laser preparation + Clearfil Tri-S (C3S) Bond (Kuraray Medical, Tokyo, Japan) (a one-step self-etching adhesive);
Show more

5 Read more

The effect of ER: YAG laser on enamel resistance to caries during orthodontic treatment: An in vitro study

The effect of ER: YAG laser on enamel resistance to caries during orthodontic treatment: An in vitro study

Thus, depending on the established irradiation distance, the incident energy on dental surface increases the ablation depth or amplifies the irradiated site. (34) In fact, the dispersion of the energy occurs when the active tip is far off the substrate, causing a little amplification of the spot size (diameter of the beam) and consequently higher is the irradiated area, decreasing the performance of the laser on the tissue (35) . the histopathological finding of lesion size difference between the three groups certainly support the mean lesion depth difference between the three groups discussed above, while the etching patterns were observed to vary between the examined teeth of the same group on contrast to the finding of Cehreli and Altay (36) who stated that all the samples within a group were found to be similar in the extent of surface irregularity. All the three groups showed rough and irregular enamel surface with craters but only the control group enamel showed deeper pitting with type IV dissolution, making the irradiated enamel superior from this point of view.
Show more

7 Read more

Evaluation of the effect of ER: YAG laser on apical microleakage (in vitro study)

Evaluation of the effect of ER: YAG laser on apical microleakage (in vitro study)

However, little is known if the type of bur used or the degree of smoothness after root-end resection would have a significant impact on the clinical outcome of surgical endodontic. Root- end resection performed with high energy laser result in ablation of the exposed dentinal tubules, which may decrease microleakage, and increase the resistance to root resorption. The absence of vibration during the root-end resection with lasers may also prevent loss of adaptation between the gutta-percha and the canal wall (3) . Gouw-Soares, et al. conducted a study with human teeth with apicoectomies performed with burs, Er:YAG laser or CO2 laser. The use of lasers resulted in smoother surfaces and more homogeneous dentin fusion and recrystallization, which occluded tubules and decreased permeability (8) . Paghdiwala found that thermal ablation with Er:YAG laser can cause the dissolution of mineral components and fusion of amorphous particles, without crystallization, which results in a clean and smooth surface. The advantages of this type of laser over burs are:
Show more

6 Read more

Applying of Ho: YAG laser in the treatment of complicated urethral strictures

Applying of Ho: YAG laser in the treatment of complicated urethral strictures

anatomică. De aceea rezultatele sunt oarecum apropiate între grupul stricturilor peniene şi cel al stricturilor bulbare, diferenţele fiind minime. Se constată rezultate superioare în cazul procedurii laser comparativ cu lama rece la pacienţii din ambele loturi. Clasificarea, care reflectă cel mai fidel rezultatele, este cea realizată în funcţie de lungimea stricturii (mai mică, respectiv mai mare de un cm) şi a caracterului recidivant al acestora. În grupul pacienţilor cu strictură uretrală mai mică de un cm, rezultatele semnificative se obţin la 6 luni postoperatorii (90% pentru ambele proceduri). Rezultate bune se obţin şi la pacienţii cu stricturi mai mari de un cm (90% după 6 luni în cazul utilizării fibrei laser, respectiv 83,3% după uretrotomia cu lamă rece). Aceste rezultate sunt obţinute în cazul stricturilor iniţiale (fără recidivă la momentul operaţiei) fiind total diferite faţă de cele obţinute în cazul stricturilor recidivante (tab. 4 și 5). Este practic categoria cel mai des întâlnită, evoluţia acestor pacienţi fiind marcată de o rată crescută a recurenţelor. De aceea, tratamentul endoscopic este uneori ineficient, mai ales în cazul stricturilor uretrale multiplu recidivante, uretroplastia fiind de cele mai multe ori, singura alternativă viabilă. În categoria pacienţilor cu stricturi uretrale recidivante cu lungimi mai mari de un cm (15 pacienţi) toate cazurile au avut de-a lungul timpului multiple intervenţii endoscopice (uretrotomie internă optică cu lamă rece) având rezultate slabe în timp. Agresivitatea acestor stricturi recidivante, necesită incizii dificile (la ora 12, 3, 6 şi 9).
Show more

5 Read more

SystemYC-200 S plus. Ophthalmic YAG and SLT Laser. Ophthalmic YAG Laser

SystemYC-200 S plus. Ophthalmic YAG and SLT Laser. Ophthalmic YAG Laser

Exact Targeting Clear and Sharp Field of View An improved optical design that optimizes resolution and contrast, and an expanded focal depth provide a clear view of pathology and treatment. A unique illumination system with an LED light source results in a bright, near-natural view that minimizes aberration. The sharp, clear optics provide an enhanced view of the treatment area.

6 Read more

YAG Laser Operation Manual

YAG Laser Operation Manual

Laser light has been widely used in military, electronic, industrial, agricultural, medical and scientific applications ever since it was born and has been developing very quickly.YAG laser light, as a thermal light source of high energy density, provides many ways of processing for both metallic and nonmetallic materials, while the non-touch engraving and cutting provides unique merits: as the conventional mechanical knives are replaced by invisible light and avoids exposure of the workpiece to the mechanical part of the laser knife head, the workpiece surface is free from scratches; as no cutting knife is used, plus the cutting seam is narrow and the cut is smooth, the machine is not subject to the crispness, hardness, softness or elasticity of the materials being processed. It is particularly advantageous for cutting small-angle irregular graphic materials over any ordinary processing technique. Compared with conventional processing techniques, laser processing features high precision, high efficiency, high cost performance and environmentally friendliness.
Show more

41 Read more

YAG Laser Posterior Capsulotomy

YAG Laser Posterior Capsulotomy

The Procedure The procedure takes place in a room separate from the clinic. The laser treatment is given through a standard eye examination microscope (slit lamp) connected to the laser machine. You will have some anaesthetic drops put in the eye just before the procedure. These often cause a slight tingling or stinging for a few seconds. You will be asked to place your chin on a rest and press your forehead against a narrow band. A contact lens is used to improve the doctor’s view and prevent the eye from

9 Read more

Diode Laser and Er,Cr:YSGG Laser in the treatment of Oral Leukoplakia: A Comparative Study.

Diode Laser and Er,Cr:YSGG Laser in the treatment of Oral Leukoplakia: A Comparative Study.

Introduction 2 with which they can be done, the way the laser beam can be modulated such as continuous wave or pulsed mode and the mode of delivery of the laser beam. 8 Dental lasers may be separated into two basic groups as soft lasers and hard lasers. 6 They can be used both for diagnosis as well as therapeutic purpose. The superiority of lasers to other modalities is that they provide a blood free surgical field by sealing the blood vessels thereby offering excellent visibility and reduced operative time and minimize post operative swelling by sealing the lymphatic vessels. 9 Lasers offer the ability to negotiate curves and fold in oral cavity and can vaporize, cut and coagulate tissue. With the use of lasers, the bacterial count is reduced, chances of mechanical trauma are minimal, scarring is negligible and pain is almost nil probably due to sealing of the nerve fibres. 9
Show more

125 Read more

An Audit of IO6 YAG Laser Capsulotomies Done

An Audit of IO6 YAG Laser Capsulotomies Done

management from the patient records. The lasers were performed with SYL 9000 Ophthalmic yttrium aluminum garnet (YAG) Laser systems [Lightmed Corporation, Taiwan]. This is a class 3b Laser with a wavelength of 1064 nm and Q-switched operational mode and a spot size of 8 um. Results: The audit involved 106 subjects. The mean age was 56.76 years. Fifty nine (55.7%) subjects were females while 44.3% were males. Eleven (10.4%) subjects had bilateral neodymium‐doped yttrium aluminum garnet ND YAG laser treatment while 89.6% had unilateral treatment. Seventy five (72.8%) of the subjects had visual improvement following treatment.
Show more

7 Read more

Show all 10000 documents...