Comparative study between the efficacy of long-pulsed Neodymium- YAG laser and Fractional CO2 laser in the treatment of striae distensae

2021 ◽  
Author(s):  
Hendawy AF ◽  
Aly DG ◽  
Shokeir HA ◽  
Samy NA
Keyword(s):  
Patient Satisfaction ◽  
Nd:Yag Laser ◽  
The Other ◽  
Striae Distensae ◽  
Yag Laser ◽  
Pregnant Females ◽  
Significant Difference ◽  
Significant Clinical Improvement ◽  
Neodymium Yag Laser ◽  
Dermal Lesion

Abstract Background: Striae Distansae (SD) are a disfiguring dermal lesion, characterized by lines of dermal atrophy, occurring at sites of dermal damage caused by stretching. They affect adolescents and more than 70% of pregnant females due to stretching of the skin.Objectives: To assess and to compare the effect of 1, 064 nm Long Pulsed (LP) Nd: YAG laser and Fractional CO2 laser clinically and histologically in treating SD.Materials/Methods: Thirty female patients with bilateral symmetrical SD were treated with Fractional CO2 laser on one side and long-pulsed Nd: YAG laser on the other side. All patients treated with 3 laser sessions at 3 weeks interval. Global Aesthetic improvement scale (GAIS) and the score of patient satisfaction were used to evaluate improvement 3 months post treatment. Four mm punch biopsies were taken from each side before treatment and 3 months after the last session to measure epidermal and collagen thickness.Results: More significant clinical improvement was noted with the Nd:YAG laser than Fractional CO2 laser. Both GAIS and satisfaction score were significantly higher in the Nd:YAG laser treated side epidermal and collagen thickness were evidently increased in the lesions treatd by Nd: YAG laser than those treated by Fractional CO2 laser with no significant difference.Conclusions: Long pulsed Nd-YAG laser is clinically more effective than the Fractional CO2 laser in treating SD without serious adverse effects, although there was no significant difference between them histopathologically.

scholarly journals The effectiveness of Fractional CO2 laser and long-pulsed ND- YAG laser in managing striae

2021 ◽  
Author(s):  
Hendawy AF ◽  
Aly DG ◽  
Shokeir HA ◽  
Samy NA
Keyword(s):  
Side Effects ◽  
Clinical Improvement ◽  
Co2 Laser ◽  
Nd:Yag Laser ◽  
The Other ◽  
Yag Laser ◽  
Fractional Co2 Laser ◽  
Pregnant Females ◽  
Significant Difference ◽  
Significant Clinical Improvement

Abstract Background: Striae Distansae (SD) are a disfiguring dermal condition, characterized by linear bands of atrophic skin, occurring at sites of dermal damage caused by stretching. They affect adolescents and more than 70% of pregnant females due to stretching of the skin. Aims: To evaluate and to compare the efficacy of 1, 064 nm Long Pulsed Nd: YAG laser and Fractional CO2 laser in the management of SD. Patients/Methods: Thirty female patients with bilateral symmetrical SD were treated with Fractional CO2 laser on one side and long-pulsed Nd: YAG laser on the other side. All patients received 3 sessions at 3 weeks interval. Global Aesthetic improvement scale (GAIS) and was used to evaluate improvement 3 months post treatment. Four mm punch biopsies were taken from each side before treatment and 3 months after the last session to measure epidermal and collagen thickness. Findings: More significant clinical improvement was noted with the Nd:YAG laser than Fractional CO2 laser. Both GAIS and satisfaction score were significantly higher in the Nd:YAG laser treated side epidermal and collagen thickness were evidently increased in the Nd: YAG laser treated lesions than those treated by Fractional CO2 laser with no significant difference. Conclusions: Long pulsed Nd-YAG laser is clinically more effective than the Fractional CO2 laser in treating SD without serious side effects, although there was no significant difference between them histopathologically.

Efficacy and safety of Nd:YAG laser vitreolysis for symptomatic vitreous floaters: A randomized controlled trial

2020 ◽  
pp. 112067212096876
Author(s):  
Gustavo D Ludwig ◽  
Henrique Gemelli ◽  
Guilherme M Nunes ◽  
Pedro D Serracarbassa ◽  
Márgara Zanotele
Keyword(s):  
Adverse Events ◽  
Contrast Sensitivity ◽  
Nd:Yag Laser ◽  
Visual Disturbance ◽  
Control Group ◽  
Efficacy And Safety ◽  
Yag Laser ◽  
Vitreous Floaters ◽  
Significant Difference ◽  
Laser Group

Background: Vitreous floaters are a common and inconvenient phenomena. This study aims to examine the efficacy and safety in treating vitreous floaters using Nd:YAG laser vitreolysis. Methods: In this prospective double-blinded randomized clinical trial 24 eyes of twenty-four patients were randomized into intervention with YAG laser vitreolysis and control groups. Primary outcomes were visual disturbance on a 10-point scale, qualitative changes in a 4-level scale, contrast sensitivity measured with the Pelli-Robson table and the National Eye Institute Visual Functioning Questionnaire 25 (NEI VFQ-25). Secondary results included objective change in vitreous opacities, best-corrected visual acuity (BCVA), variation in intraocular pressure (IOP) and other adverse events. Results: Twenty-one patients (21 eyes; 5 male, 16 female) were enrolled in this study (mean age 62 ± 7.9 years), three were lost during follow-up. In the YAG laser group, the 10-point visual disturbance score improved a mean of 4.7 points ( p < 0.001) compared to the control group that improved 2.1 ( p = 0.09). The YAG laser group reported greater subjectively symptomatic improvement (77%) than controls (25%). NEI VFQ-25 revealed improved general vision (75.8 versus 59.2; p = 0.037) and in mental health at 6 months (84.3 versus 70.3; p = 0.048). There was no significant difference in contrast sensitivity ( p = 0.848) and in IOP ( p = 0.505). No differences in adverse events between groups were identified. Conclusion: Vitreolysis with Nd:YAG laser improves visual results in patients with symptomatic vitreous floaters, without adverse events considered clinically relevant. Other trials with a larger number of participants are required to corroborate these results.

scholarly journals Evaluation of the Influence of the Nd:YAG Laser and Different Irrigants on the Bond Strength of the Adhesion of the Fiber Posts to Root Dentin using a Self-etching Adhesive System

2013 ◽  
Vol 4 (3) ◽  
pp. 170-174
Author(s):  
Cesar Rogério Pucci ◽  
Carlos Rocha Gomes Torres ◽  
Cláudio Antonio Talge Carvalho ◽  
Ana Julia Farias Lacerda ◽  
Marina Gullo ◽  
...  
Keyword(s):  
Bond Strength ◽  
Sodium Hypochlorite ◽  
Nd:Yag Laser ◽  
Root Canal ◽  
Adhesive System ◽  
Root Canal Filling ◽  
Yag Laser ◽  
Fiber Posts ◽  
Significant Difference ◽  
Root Dentin

ABSTRACT Aim The aim of this study was to investigate the effects of pretreatment of different irrigating solutions with and without the application the Nd: YAG laser on the bond strength (RU) of the adhesion of the fiberglass post relined with resin composite to the root dentin. Materials and methods Sixty-six single bovine incisor roots were divided into 6 groups according to irrigating solution and with/without the apllication of the Nd: YAG laser after root canal filling: S- saline; C-2% chlorhexidine solution, H-2.5% sodium hypochlorite; SL-saline + laser, CL-2% chlorhexidine + laser; HL-2.5% sodium hypochlorite + laser (all n = 11). The roots were standardized up to a file # 80 and root-filled with gutta-percha (Dentsply) and Sealer 26 (Dentsply) by lateral condensation. The root canal filling was partly removed. Afterward, root canals were irrigated with 5 ml of the selected irrigant and the fiberglass post were cemented with epoxy resin curing dual Bifix QM (VOCO) and a self-etch adhesive system Futurabond DC (VOCO). All roots were sectioned transversely, and the push-out tested was performed. The bond strength means were analyzed by the analysis of variance and Tukey test (α= 5%). Results The following bond strength MPa values—were recorded for each group: group C—7.77(±1.8)a, LC—6.46 (±2.2)a, S7.33 (±2.2)a, LS 7.35 (±1.68)a, H 5.43 (±1,3)b, LH 5.13 (±1,6)b. A signifcant bond strenght decrease was noticed with the use of 2.5% NaOCl (p < 0.05). No statistical significant difference were found with our without the apllication of the Nd:YAG laser (p > 0.05). Conclusion Regardless the irrigant tested, the use of Nd: YAG laser can be indicated prior to cementation of fiberglass without loss in bond strength. How to cite this article Pucci CR, Lacerda AJF, Gullo M, Xavier ACC, Torres CRG, Martinho FC, Carvalho CAT. Evaluation of the Influence of the Nd:YAG Laser and Different Irrigants on the Bond Strength of the Adhesion of the Fiber Posts to Root Dentin using a Self-etching Adhesive System. World J Dent 2013;4(3):170-174.

scholarly journals Evaluation of Oral Stereognosis in Relation to Tactile Ability and Patient Satisfaction

2017 ◽  
Vol 43 (6) ◽  
pp. 468-475
Author(s):  
Leblebicioglu Kurtulus Ikbal ◽  
Kilic Kerem ◽  
Eraslan Ravza ◽  
Unlu Damla ◽  
Çalışkan Ahmet ◽  
...  
Keyword(s):  
Patient Satisfaction ◽  
Complete Denture ◽  
Sensory Function ◽  
The Other ◽  
Control Group ◽  
Complete Dentures ◽  
Perception Threshold ◽  
Pressure Threshold ◽  
Significant Difference ◽  
Oral Perception

We investigated the oral stereognostic ability (OSA) of dentate individuals, conventional complete denture patients, and maxillary implant-supported denture patients with bar attachments. Stereognosis tests were carried out, and the relationship between OSA and patient satisfaction was assessed with a satisfaction survey: the Turkish version of the oral health impact profile-14 (OHIP-TR-14). To compare differences in oral sensory function among individuals with natural dentition, complete denture wearers, and maxillary implant-supported denture wearers, tactile awareness (thickness perception threshold) and pressure awareness (threshold of lateral loading) were assessed. According to the results, the oral perception level of natural dentate patients was higher than that of the complete denture group and maxillary implant-supported complete denture group at the end of the study. There was no statistically significant difference in OHIP-TR-14 scores between the maxillary implant-supported complete denture group and the complete denture group (P &lt; .05). The control group perceived the applied lateral and vertical forces statistically earlier than the other groups (P &lt; .001). There was no statistically significant difference between the complete denture and maxillary implant-supported denture groups in terms of the lateral pressure threshold or thickness tactile threshold (P &gt; .05). At the end of the study it was concluded that there was no correlation between oral perception levels and satisfaction in patients with complete dentures and patients with maxillary implant-supported complete dentures. The control group, compared with the complete denture and maxillary implant-supported complete denture groups, perceived the lateral and vertical forces statistically earlier than the other groups.

scholarly journals Compare Brimonidine 0.2% versus Latanoprost 0.005% (Xalatan) in preventing intraocular pressure after YAG laser posterior capsulotomy in patients visiting ophthalmology clinic in Ardabil city

2016 ◽  
Vol 6 (1) ◽  
pp. 189
Author(s):  
Habib Ojaghi ◽  
Rahim Masoumi ◽  
Solmaz Eskandar-Sani
Keyword(s):  
Intraocular Pressure ◽  
Double Blind ◽  
Yag Laser ◽  
Posterior Capsulotomy ◽  
Double Blind Clinical Trial ◽  
Number Of Patients ◽  
Significant Difference ◽  
The Mean ◽  
Iop Elevation ◽  
Neodymium Yag Laser

Background: The transient increase of intraocular pressure (IOP) following neodymium YAG laser capsulotomy can occur in a significant number of patients, which requires prophylactic treatment with IOP reducing drugs, and in some patients, postoperative IOP monitoring. This study was performed to compare the efficacy of brimonidine 0.2% versus latanoprost0.005% (Xalatan) in preventing the IOP elevation after YAG laser posterior capsulotomy in patients visiting ophthalmology clinic in Alavi Hospital.Methods: This study was a randomized, double-blind clinical trial that included 100 patients who had developed posterior capsule opacification (PCO) as a result of previous cataract surgery and were candidate for undergoing YAG laser posterior capsulotomy. The patients were randomly divided into two groups of 50 patients. One group received brimonidine 0.2% one hour before surgery, and the other group received Xalatan 0.005% in the night before laser surgery. In both groups the patients' IOP was measured in baseline, 1, 2, 3, 24 hours, 3 days and one week after surgery. The gathered data were analyzed using statistical methods in SPSS.16.Results: The mean IOP, 1, 2, 3, and 24 hours, 3 days, and one week after surgery didn't show any significant difference between two groups. IOP one hour before surgery changed significantly compared to one hour after surgery and a statistically significant relationship was found between the two groups, though at other times of measurement, the differences were not significant.Conclusions: Results showed that using Brimonidine 0.2% or Latanoprost 0.005% as prophylactic before YAG laser posterior capsulotomy could be effective in preventing IOP after treatment.

Writing in Aphasia Rehabilitation: Cursive vs Manuscript

1976 ◽  
Vol 41 (4) ◽  
pp. 523-529 ◽  
Author(s):  
Daniel R. Boone ◽  
Harold M. Friedman
Keyword(s):  
Correct Response ◽  
The Other ◽  
Read Aloud ◽  
Writing Style ◽  
Reading And Writing ◽  
Manual Responses ◽  
Significant Difference ◽  
Written Form ◽  
The Individual ◽  
Read Number

Reading and writing performance was observed in 30 adult aphasic patients to determine whether there was a significant difference when stimuli and manual responses were varied in the written form: cursive versus manuscript. Patients were asked to read aloud 10 words written cursively and 10 words written in manuscript form. They were then asked to write on dictation 10 word responses using cursive writing and 10 words using manuscript writing. Number of words correctly read, number of words correctly written, and number of letters correctly written in the proper sequence were tallied for both cursive and manuscript writing tasks for each patient. Results indicated no significant difference in correct response between cursive and manuscript writing style for these aphasic patients as a group; however, it was noted that individual patients varied widely in their success using one writing form over the other. It appeared that since neither writing form showed better facilitation of performance, the writing style used should be determined according to the individual patient’s own preference and best performance.

Multi-Center Study of Thromboplastin Calibration Precision – Influence of Reagent Species, Composition, and International Sensitivity Index (ISI)

1993 ◽  
Vol 69 (01) ◽  
pp. 035-040 ◽  
Author(s):  
A M H P van den Besselaar ◽  
R M Bertina
Keyword(s):  
Oral Anticoagulants ◽  
International Normalized Ratio ◽  
The Other ◽  
World Health ◽  
Rabbit Brain ◽  
Sensitivity Index ◽  
Bovine Plasma ◽  
Significant Difference ◽  
The Mean ◽  
International Sensitivity Index

SummaryFour thromboplastin reagents were tested by 18 laboratories in Europe, North-America, and Australasia, according to a detailed protocol. One thromboplastin was the International Reference Preparation for ox brain thromboplastin combined with adsorbed bovine plasma (coded OBT/79), and the second was a certified reference material for rabbit brain thromboplastin, plain (coded CRM 149R). The other two thromboplastin reagents were another rabbit plain brain thromboplastin (RP) with a lower ISI than CRM 149R and a rabbit brain thromboplastin combined with adsorbed bovine plasma (RC). Calibration of the latter two reagents was performed according to methods recommended by the World Health Organization (W. H. O.).The purpose of this study was to answer the following questions: 1) Is the calibration of the RC reagent more precise against the bovine/combined (OBT/79) than against the rabbit/plain reagent (CRM 149R)? 2) Is the precision of calibration influenced by the magnitude of the International Sensitivity Index (ISI)?The lowest inter-laboratory variation of ISI was observed in the calibration of the rabbit/plain reagent (RP) against the other rabbit/plain reagent (CRM 149R) (CV 1.6%). The highest interlaboratory variation was obtained in the calibration of rabbit/plain (RP) against bovine/combined (OBT/79) (CV 5.1%). In the calibration of the rabbit/combined (RC) reagent, there was no difference in precision between OBT/79 (CV 4.3%) and CRM 149R (CV 4.2%). Furthermore, there was no significant difference in the precision of the ISI of RC obtained with CRM 149R (ISI = 1.343) and the rabbit/plain (RP) reagent with ISI = 1.14. In conclusion, the calibration of RC could be performed with similar precision with either OBT/79 or CRM 149R, or RP.The mean ISI values calculated with OBT/79 and CRM 149R were practically identical, indicating that there is no bias in the ISI of these reference preparations and that these reference preparations have been stable since their original calibration studies in 1979 and 1987, respectively.International Normalized Ratio (INR) equivalents were calculated for a lyophilized control plasma derived from patients treated with oral anticoagulants. There were small but significant differences in the mean INR equivalents between the bovine and rabbit thromboplastins. There were no differences in the interlaboratory variation of the INR equivalents, when the four thromboplastins were compared.

IMMUNOLOGICAL REACTIVITY OF INSULIN IN HUMAN SERUM

1966 ◽  
Vol 53 (4) ◽  
pp. 673-680 ◽  
Author(s):  
Torsten Deckert ◽  
Kai R. Jorgensen
Keyword(s):  
Normal Subjects ◽  
The Other ◽  
Human Pancreas ◽  
Porcine Pancreas ◽  
Crystalline Insulin ◽  
Endogenous Insulin ◽  
Significant Difference ◽  
Human Sera ◽  
Normal Human ◽  
The One

ABSTRACT The purpose of this study was to investigate whether a difference could be demonstrated between crystalline insulin extracted from normal human pancreas, and crystalline insulin extracted from bovine and porcine pancreas. Using Hales & Randle's (1963) immunoassay no immunological differences could be demonstrated between human and pig insulin. On the other hand, a significant difference was found, between pig and ox insulin. An attempt was also made to determine whether an immunological difference could be demonstrated between crystalline pig insulin and crystalline human insulin from non diabetic subjects on the one hand and endogenous, circulating insulin from normal subjects, obese subjects and diabetic subjects on the other. No such difference was found. From these experiments it is concluded that endogenous insulin in normal, obese and diabetic human sera is immunologically identical with human, crystalline insulin from non diabetic subjects and crystalline pig insulin.

Effectiveness of Brushing Associated with Oral Irrigation in Maintenance of Peri-Implant Tissues and Overdentures: Clinical Parameters and Patient Satisfaction.

2020 ◽  
Author(s):  
Marcela Moreira Salles ◽  
Viviane de Cássia Oliveira ◽  
Ana Paula Macedo ◽  
Claudia Helena Silva-Lovato ◽  
Helena de Freitas Oliveira Paranhos
Keyword(s):  
Patient Satisfaction ◽  
Analogue Scale ◽  
Ring System ◽  
Complete Dentures ◽  
Gingival Index ◽  
Prosthetic Rehabilitation ◽  
Mean Values ◽  
Probing Depth ◽  
Significant Difference ◽  
High Level

Implant-supported prostheses hygiene and peri-implant tissues health are considered to be predictive factors for successful prosthetic rehabilitation. Therefore, the purpose of this study was to evaluate the effectiveness of brushing associated with oral irrigation measured as biofilm-removing capacity, maintenance of healthy oral tissues, and patient satisfaction. A randomized, crossover clinical trial was conducted with 38 patients who wore conventional maxillary complete dentures and mandibular overdentures retained by the O-ring system. The patients were instructed to use the following hygiene methods for 14 days: mechanical brushing [MB (brush and dentifrice - Control)]; and MB with oral irrigation [WP (Waterpik - Experimental)]. Biofilm-removing capacity and maintenance of healthy oral tissues were evaluated by the Modified Plaque Index (PI), Gingival Index (GI), Probing Depth (PD), and Bleeding on Probing Index (BP) recorded at baseline and after each method. In parallel, patients answered a specific questionnaire using a Visual Analogue Scale after each hygiene method. Data were analyzed by Friedman and Wilcoxon tests (α=0.05). The results showed significantly lower PI, GI, PD, and BP indices after application of the hygiene methods (P&lt;0.001) than those observed at baseline. However, no significant difference was found between MB and WP. The satisfaction questionnaire responses to both methods showed high mean values for all questions, with no statistically significant difference found between the answers given after the use of MB and WP (P&gt;0.05). The findings suggest that WP was effective in reducing PI, GI, PD, and BP indices and provided a high level of patient satisfaction.

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