scholarly journals ASSESSMENT OF ENAMEL SURFACE AFTER APPLICATION OF TUNGSTEN CARBIDE BUR FOR RESIDUAL ADHESIVE REMOVAL

2018 ◽  
Vol 9 (2) ◽  
Author(s):  
Marijana Arapović Savić ◽  
Adriana Arbutina ◽  
Mirjana Umićević Davidović ◽  
Vladan Mirjanić ◽  
Irena Kuzmanović Radman
Keyword(s):  
Composite Material ◽  
Tungsten Carbide ◽  
Damage Index ◽  
Enamel Surface ◽  
Orthodontic Appliances ◽  
Fixed Orthodontic Appliances ◽  
Significant Difference ◽  
Group A ◽  
Group B ◽  
Adhesive Removal

Enamel damage often occurs in a process of adhesive removal after the completion of therapy with fixed orthodontic appliances. The aim of this study was to evaluate the enamel surface after applying a 12-fluted round tungsten carbide bur for adhesive removal at different speeds of dental micro motor after debonding brackets. Material and method: On 40 human premolars, extracted for orthodontic purposes, metal brackets were bonded with composite material. After removing the brackets, the sample was divided into two groups: group A - 20 teeth from which the rest of the composite material was removed with a round tungsten carbide bur at 8,000 rotations per minute and group B - 20 teeth from which the rest of adhesive was removed with a round tungsten carbide bur at 32,000 rotations per minute. For each sample, four images were made under different magnifications by scanning electron microscopy, and the damage estimation was performed using the Enamel damage index (EDI) and Surface roughness index (SRI). Results: The most common EDI score on the overall level was 3 (62.5%), while the most commonly represented SRI score was 2 (52.5%). There was no statistically significant difference in the average values of the EDI index (t (38) = -.96, p> .05) and in the average SRI index values (t (38) = -. 89, p> .05) between two tooth examined groups. Conclusion: Enamel damage was found after applying a round tungsten carbide bur at 8,000 and 32,000 rpm. The number of rotations per minute did not affect the size of enamel damage.

scholarly journals Assessment of Exogenous Pigmentation on Clear Elastomeric Modules: An in vitro Study

2018 ◽  
Vol 8 (1) ◽  
pp. 33-36
Author(s):  
Shaista N Ansari ◽  
Dhananjay Rathod ◽  
G P Rathod ◽  
Gazal Bisht
Keyword(s):  
Methylene Blue ◽  
In Vitro Study ◽  
Vitro Study ◽  
Orthodontic Appliances ◽  
Significant Difference ◽  
Adobe Photoshop ◽  
Group A ◽  
Strong Staining ◽  
Group B

Objective: To assess in vitro changes in the shade of clear elastomeric modules from different manufacturers influenced by exogeneous pigmentation contained in everyday dietary substances.Materials & Method: The specimen comprised of clear elastomeric modules (Group A: Libral, Group B: TP Orthodontics) which were immersed in dietary substances: ketchup, coffee, tea, pepsi & methylene blue. Their hue, saturation and intensity were figured after 72 hours by methods of Adobe photoshop CS3 to mirror the module recoloring seriousness.Result: Significant difference was found between two types of modules analyzed in this study. Ketchup and methylene blue demonstrated higher staining potential compared to other staining media. Besides, there was no significant difference in staining contrast between tea and Pepsi.Conclusion: Ketchup and methylene blue are strong staining media, ought to be avoided by the patients opting for aesthetic orthodontic appliances. Elastomeric modules manufactured by different companies have differing staining potential. 

scholarly journals Elemental and morphological analysis of enamel following the application of two bleaching systems with amorphous calcium phosphate: effect on enamel erosion susceptibility

2021 ◽  
Vol 45 (1) ◽  
Author(s):  
Shaymaa M. Nagi ◽  
Shahinaz H. Nabil ◽  
Mohamed H. Zaazou
Keyword(s):  
Calcium Phosphate ◽  
Amorphous Calcium Phosphate ◽  
Morphological Changes ◽  
Enamel Surface ◽  
Control Group ◽  
Bleaching Agent ◽  
Bleaching Procedure ◽  
Significant Difference ◽  
Group A ◽  
Group B

Abstract Background Using remineralizing agents during and after bleaching procedures could maintain enamel surface, decreasing its erosive susceptibility. This study evaluated the efficacy of an in-office and at-home bleaching materials with amorphous calcium phosphate (ACP) on the susceptibility of the enamel to erosion. Forty-five bovine specimens were separated into three groups. Group A: no bleaching (control). Group B: Zoom 2 bleaching followed by ACP application. Group C: Nite White ACP. All specimens in all groups were subjected to an erosive challenge for five days. Using Energy Dispersive X-ray all specimens were subjected to elemental analysis and were examined for morphological changes under Scanning Electron Microscope (SEM). Results Group B showed the highest mean calcium, phosphorus and sodium weight percent (wt%). Both Groups B and C showed statistically significant difference. While, there was no statistically significant difference between both Groups A and B.The sodium mean wt% showed a statistically significant difference in all groups. The magnesium mean wt% showed no statistically significant difference in all groups. SEM photomicrograph revealed hollowing of prism cores with intact prisms peripheries for group A. Group B showed relativity smooth surface with minor pores, while Group C showed an increase in the depth of surface irregularities and depressions. Conclusions Enamel susceptibility to erosion after bleaching procedure was material dependent. Zoom 2 bleaching agent followed by ACP application did not increase the susceptibility of the enamel surface to erosion. Adding ACP to Nite White bleaching agent had no benefit on reducing enamel susceptibility to erosion.

scholarly journals Changes in subgingival microflora after placement and removal of fixed orthodontic appliances

2014 ◽  
Vol 142 (5-6) ◽  
pp. 301-305 ◽  
Author(s):  
Marija Zivkovic-Sandic ◽  
Branka Popovic ◽  
Jelena Carkic ◽  
Nadja Nikolic ◽  
Branislav Glisic
Keyword(s):  
Statistical Significance ◽  
Orthodontic Appliances ◽  
Fixed Orthodontic Appliances ◽  
Orthodontic Patients ◽  
Group A ◽  
Subgingival Microflora ◽  
Fixed Appliances ◽  
Pcr Method ◽  
Group B ◽  
The Right

Introduction. The placement of fixed orthodontic appliances may lead to increased plaque accumulation and changes in subgingival microflora. Objective. The aim of this study was to examine the changes in frequency of subgingival microflora that occur after placement and removal of fixed orthodontic appliance using polymerase chain reaction (PCR). Methods. This study included 33 orthodontic patients, who were divided into two groups. Subgingival plaque samples were collected from the right upper incisor (U1) and right upper first molar (U6). In group A, the samples were taken three times: before placement appliance (T1), after one month (T2), and after 3 months (T3). In group B the samples were also taken three times: before appliance removal (T1), after one month (T2), and after three months (T3). PCR method was used to determine the presence of P. gingivalis, A. actinomycetemcomitans, T. forsythia, and P. intermedia. Results. In group A the frequency of P. gingivalis showed statistically significant decrease at U1 (p=0.049) and U6 (p=0.008), from T1 to T2, and at U1 (p=0.048) from T1 to T3. In group B only the frequency of T. forsythia showed a statistically significant decrease, at U6 (T1 vs. T2, p=0.004; T1 vs. T3, p=0.0003). Regarding other analyzed bacteria, changes in the presence were noticed but no statistical significance was found. Conclusion. Placement of fixed appliances may have an impact on subgingival microflora, but in the first months after the placement and removal of the appliance changes were not significant, probably due to good oral hygiene.

scholarly journals THE EFFECTIVENESS OF USING SIWAK TOOTHPASTE ON PLAQUE ACCUMULATION IN FIXED ORTHODONTIC APPLIANCES USERS’

2020 ◽  
pp. 113-115
Author(s):  
HIMAWAN HALIM ◽  
TALITHA AYULIA SALSABILA
Keyword(s):  
Orthodontic Appliances ◽  
Research Subjects ◽  
Salvadora Persica ◽  
Chi Square ◽  
Fixed Orthodontic Appliances ◽  
Before And After ◽  
Group A ◽  
Fixed Appliances ◽  
Group B ◽  
Fixed Orthodontic Appliance

Objective: The objective of the study was to determine the ability of toothpaste containing Salvadora persica (Siwak) to reduce the accumulation of dirt in the oral cavity compared to ordinary toothpaste users in fixed orthodontic users. Methods: It was conducted on 40 subjects, divided into two groups of A and B. Group A uses Siwak, while Group B uses ordinary toothpaste. The research subjects were students that utilized fixed appliances for at least 6 months and without periodontal disease. Data were obtained by measuring the plaque level before and after using the toothpaste. Results: A significant relationship between the use of Siwak and ordinary toothpaste by reducing its accumulation in patients using fixed orthodontic appliances and a Chi-square statistical test value of 0.018. Conclusion: The use of Siwak is more effective in reducing plaque accumulation in fixed orthodontic appliance users compared to ordinary toothpaste.

scholarly journals Periodontal health status in patients treated with the Invisalign® system and fixed orthodontic appliances: A 3 months clinical and microbiological evaluation

2015 ◽  
Vol 09 (03) ◽  
pp. 404-410 ◽  
Author(s):  
Luca Levrini ◽  
Alessandro Mangano ◽  
Paola Montanari ◽  
Silvia Margherini ◽  
Alberto Caprioglio ◽  
...  
Keyword(s):  
Real Time ◽  
Control Group ◽  
Orthodontic Appliances ◽  
Periodontal Pathogens ◽  
Periodontal Health ◽  
Probing Depth ◽  
Fixed Orthodontic Appliances ◽  
Significant Difference ◽  
Group A ◽  
And Control

ABSTRACT Objective: The aim of this prospective study was to compare the periodontal health and the microbiological changes via real-time polymerase chain reaction (PCR) in patients treated with fixed orthodontic appliances and Invisalign® system (Align Technology, Santa Clara, California). Materials and Methods: Seventy-seven patients were enrolled in this study and divided into three groups (Invisalign® group, fixed orthodontic appliances group and control group). Plaque index, probing depth, bleeding on probing were assessed. Total biofilm mass and periodontal pathogens were analyzed and detected via real-time PCR. All these data were analyzed at the T0 (beginning of the treatment) T1 (1-month) and T2 (3 months); and statistically compared using the Mann–Whitney test for independent groups. Results: After 1-month and after 3 months of treatment there was only one sample with periodontopathic anaerobes found in patient treated using fixed orthodontic appliances. The Invisalign® group showed better results in terms of periodontal health and total biofilm mass compared to the fixed orthodontic appliance group. A statistical significant difference (P < 0.05) at the T2 in the total biofilm mass was found between the two groups. Conclusion: Patients undergoing orthodontic treatment with the Invisalign® System show a superior periodontal health in the short-term when compared to patients in treatment with fixed orthodontic appliances. Invisalign® should be considered as a first treatment option in patients with risk of developing periodontal disease.

scholarly journals Evaluation of Adhesive Remnant Index after metal brackets removal using AutoCAD software

2018 ◽  
Vol 65 (1) ◽  
pp. 22-31
Author(s):  
Adriana Arbutina ◽  
Marijana Arapović-Savić ◽  
Mirjana Umićević-Davidović ◽  
Irena Kuzmanović Radman ◽  
Saša Marin
Keyword(s):  
Composite Material ◽  
Surface Area ◽  
Orthodontic Appliances ◽  
Bond Failure ◽  
Adhesive Remnant Index ◽  
Adhesive Surface ◽  
Fixed Orthodontic Appliances ◽  
Significant Difference ◽  
Average Size ◽  
Bracket Base

Summary Introduction After the completion of treatment with fixed orthodontic appliances, it is necessary to remove the brackets and bands from teeth using an appropriate method. The aim of this study was to determine the most common way of bond failure between teeth and metal brackets, as well as to compare bond failure between the brackets and upper and lower premolars. Material and Method Metal brackets were bonded with Aspire composite material on 154 human premolars, extracted for orthodontic purposes. After debonding, the surface of remaining adhesive on the teeth and brackets was measured. Adhesive Remnant Index (ARI) was used to estimate bond failure between teeth and metal brackets. Results The average size of remaining adhesive surface after removing brackets from the upper premolars was 12.06 mm2, while it was 9.32 mm2 on the lower premolars. The average size of the remaining adhesive surface area on the brackets removed from the upper premolars was 0.37 mm2, while it was 2.08 mm2 on the brackets removed from lower premolars. A statistically significant difference was found between these values. The most common score of ARIteeth was 3 (85.71%) and the most frequent score of ARIbrackets was 0 (85.71%). Conclusion The most common way of bond failure between teeth and metal brackets was between the bracket base and adhesive surface. A statistically significant difference was found between the values of the size of residual adhesive surface on the upper and lower premolars as well as on the brackets debonded from them.

DeVega versus ring annuloplasty in severe functional tricuspid insufficiency and their impact on the right ventricle

2019 ◽  
Vol 1 (4) ◽  
pp. 133-139
Author(s):  
Yasser Hamdy ◽  
Mohammed Mahmoud Mostafa ◽  
Ahmed Elminshawy
Keyword(s):  
Right Ventricular ◽  
Tricuspid Valve ◽  
Tricuspid Regurgitation ◽  
Early Postoperative Period ◽  
Tricuspid Valve Repair ◽  
Ring Annuloplasty ◽  
Significant Difference ◽  
Group A ◽  
Group B ◽  
The Right

Background: Functional tricuspid valve regurgitation secondary to left-sided valve disease is common. DeVega repair is simple, but residual regurgitation with subsequent impairment of the right ventricular function is a concern. This study aims to compare tricuspid valve repair using DeVega vs. ring annuloplasty and their impact on the right ventricle in the early postoperative period and after six months. Methods: This is a prospective cohort study of 51 patients with rheumatic heart disease who underwent tricuspid valve repair for secondary severe tricuspid regurgitation. Patients were divided into two groups: group A; DeVega repair (n=34) and group B; ring annuloplasty repair (n=17). Patients were assessed clinically and by echocardiography before discharge and after six months for the degree of tricuspid regurgitation, right ventricular diameter and tricuspid annular plane systolic excursion (TAPSE). Results: Preoperative echocardiographic assessment showed no difference in left ventricular end-systolic diameter, end-diastolic diameter, ejection fraction and right ventricular diameter, however; group A had significantly better preoperative right ventricular function measured by TAPSE (1.96 ± 0.27 vs1.75 ± 0.31 cm; p=0.02). Group B had significantly longer cardiopulmonary bypass time (127.65 ± 13.56 vs. 111.74 ± 18.74 minutes; p= 0.003) and ischemic time (99.06 ± 11.80 vs. 87.15 ± 16.01 minutes; p= 0.009). Pre-discharge, there was no statistically significant difference in the degree of tricuspid regurgitation, but the right ventricular diameter was significantly lower in group B (2.66 ± 0.41 and 2.40 ± 0.48 cm; p=0.049). After six months of follow up, the degree of tricuspid regurgitation (p= 0.029) and the right ventricular diameter were significantly lower in the ring annuloplasty group (2.56 ± 0.39 and 2.29 ± 0.44 cm; p=0.029). Although there was a statistically significant difference in preoperative TAPSE, this difference disappeared after six months. Conclusion: Both DeVega and ring annuloplasty techniques were effective in the early postoperative period, ring annuloplasty was associated with lesser residual regurgitation and better right ventricular remodeling in severe functional tricuspid regurgitation than DeVega procedure after 6-months of follow up.

Effect of short-term use of oral contraceptive pills on intraocular pressure

2020 ◽  
Vol 35 (3) ◽  
Author(s):  
Tayyaba Gul Malik ◽  
Hina Nadeem ◽  
Eiman Ayesha ◽  
Rabail Alam
Keyword(s):  
Oral Contraceptive ◽  
Childbearing Age ◽  
Short Term ◽  
Oral Contraceptive Pills ◽  
Contraceptive Pills ◽  
Time Period ◽  
Significant Difference ◽  
Group A ◽  
Group B ◽  
Short Time

Objective: To study the effect of short-term use of oral contraceptive pills on intra-ocular pressures of women of childbearing age.   Methods: It was a comparative observational study, conducted at Arif memorial teaching hospital and Allied hospital Faisalabad for a period of six months. Hundred female subjects were divided into two groups of 50 each. Group A, included females, who had been taking oral contraceptive pills (OCP) for more than 6 months and less than 36 months. Group B, included 50 age-matched controls, who had never used OCP. Ophthalmic and systemic history was taken. Careful Slit lamp examination was performed and intraocular pressures (IOP) were measured using Goldman Applanation tonometer. Fundus examination was done to rule out any posterior segment disease. After collection of data, we analyzed and compared the intra ocular pressures between the two groups by using ANOVA in SPSS version 21.   Results: Average duration of using OCP was 14.9 months. There was no significant difference of Cup to Disc ratios between the two groups (p= 0.109). However, significant difference was noted between the IOP of OCP group and controls. (p=0.000). Conclusion: OCP significantly increase IOP even when used for short time period.

Comparative Clinical study of Jatyadi Taila and Jatyadi Ghrita in the management of Dushta Vrana

2018 ◽  
Vol 3 (3) ◽  
Author(s):  
Rajendra Joshi ◽  
N. B. Mashetti ◽  
Rakesh Kumar Gujar
Keyword(s):  
Clinical Study ◽  
Burning Sensation ◽  
Normal Process ◽  
Surgical Practice ◽  
Local Factors ◽  
Significant Difference ◽  
Comparative Clinical Study ◽  
Group A ◽  
Contaminated Wound ◽  
Group B

Dushta Vrana is a common and frequently encountered problem faced in surgical practice. The presence of Dushta Vrana worsens the condition of the patient with different complications and may become fatal. Local factors on wound like slough, infection and foreign body, affect the normal process of healing. A healthy wound in a normal body heals earlier with a minimum scar as compared to a contaminated wound. Therefore in this study all the efforts are made to make a Dushta Vrana into a Shuddha Vrana. Once the Vrana becomes Shuddha, Ropana of the Vrana will start. The objective of the study was to evaluate the clinical efficacy of Jatyadi Taila and Jatyadi Ghrita in Dushta Vrana. Clinically diagnosed 60 Patients of Dushta Vrana were randomly divided into two groups, each consisting of 30 Patients. Group A were treated with the Jatyadi Taila and Group B was treated by Jatyadi Ghrita. The results observed was based on the relief obtained on the subjective and objective parameters taken for consideration for this study viz, size of ulcer, discharge, smell, pain, burning sensation, itching and granulation were found significant (P Lass Than 0.05). On the basis of assessment criteria and overall result of treatment, the patients of Jatyadi Taila group showed better results when compared to Jatyadi Ghrita group. Even though statistically there is no much significant difference between the two groups, but by seeing the effect on individual parameters (subjective and objective) and over all response, Jatyadi Taila seems to be effective when compared to Jatyadi Ghrita. It is having more Ropana qualities when compared to Shodhana.

Clinical effect of Suvarna Bindu Prashan

2017 ◽  
Vol 2 (3) ◽  
Author(s):  
Patil Aniket ◽  
Dindore Pallavi ◽  
Arbar Aziz ◽  
Kadam Avinash ◽  
Saroch Vikas
Keyword(s):  
Physical Health ◽  
Eating Habits ◽  
Control Group ◽  
Inform Consent ◽  
Significant Difference ◽  
Group A ◽  
Group B ◽  
Immune Booster ◽  
Mental And Physical Health ◽  
Apparently Healthy

The quest for excellence in mental and physical health is not new. We find various references and formulations in Ayurvedic classics meant for promoting mental and physical health of a child. Suvarna Prashan is one of the formulations explained in age old Ayurvedic classic Kashyap Samhita. This formulation is very widely used now days as a memory and immune booster for children. But there is very little systematic documented study which can be used to evaluate the efficacy of the formulation. Suvarna Bhasma was prepared in Ayurved Rasayani Pharmacy, Pune. Madhu and Ghrita were collected from KLE Ayurveda Pharmacy, Belgaum. Suvarna Bindu Prashan was prepared in KLE Ayurved pharmacy, Belgaum. It contains Suvarna Bhasma, Ghrita and Madhu. Twenty apparently healthy male and female children with age group of three to four years were ready to sign inform consent form were selected into two groups each. Subjects in Group A received Suvarna Bindu Prashan where as Group B (Control group) did not receive any treatment. Both the groups were observed for six months. Children in Suvarna Bindu Prashan group showed significant reduction in the scores of eating habits, behavior, mood, temperament and scores of event of illness. However there was no significant difference in the score of sleeping habit. There was significant increase in IQ percentage.

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