Friday, July 17, 2009

Most dangerous airport,No Quality ortho without Mini implants ?

Tourists warned of Thailand airport scam, BBC news

We were questioned in separate rooms," Mr Ingram said. "We felt really intimidated. They went through our bags and demanded that we tell them where the wallet was."
The two were then put in what Mr Ingram describes as a "hot, humid, smelly cell with graffiti and blood on the walls".
Mr Ingram managed to phone a Foreign Office helpline he found in a travel guide, and was told someone in the Bangkok embassy would try to help them. Full Story

Comparison of the differences in cephalometric parameters after active orthodontic treatment applying mini-screw implants or transpalatal arches in adult patients with bialveolar dental protrusion -Journal of Oral RehabilitationPublished Online: 9 Jul 2009

The purpose of this study was to compare the differences in cephalometric parameters after active orthodontic treatment applying mini-screw implants (G1) or transpalatal arches (G2) as anchorage in adult patients with bialveolar dental protrusion needing extraction of four premolars. A total of 34 Chinese patients (18–33 years) with bialveolar dental protrusion were randomly assigned to G1 and G2.

Sliding mechanics and en-masse retraction of anterior teeth were applied to close extraction spaces. The changes in skeletal, dental and soft tissues were analyzed in both groups on lateral cephalograms before and after active orthodontic treatment. Independent samples and paired-samples t-tests were utilized to analyze the morphological changes in both groups. ANB angle was decreased in G1 and remained unchanged in G2 (P <> 0·05), there existed molars distalization in some patients. However, the maxillary molars in G2 were mesialized (P < style="font-weight: bold;">routinely recommended in patients with bialveolar dental protrusion.

Stopping Harmful Oral Bacteria

Yiping Han, associate professor at the Case Western Reserve University School of Dental Medicine, aims to understand how to build roadblocks for a common bacterium that's harmless in a mother's mouth but can turn deadly when it reaches an unborn child. She has received a five-year, $1.85 million grant from the National Institute of Dental and Craniofacial Research (NIDCR) at the National Institutes of Health to fund the effort.

According to Han this research into the mechanisms of bacterial transport not only has potential to prevent preterm and stillborn births, it may have implications in preventing periodontal disease. Periodontal disease has been linked to such health problem as arthritis, diabetes and heart disease. Full report

Periodontal health, oral health behaviours, and chronic obstructive pulmonary disease
Journal of Clinical Periodontology, Published Online: 14 Jul 2009

Aim: To evaluate the associations of periodontal health status and oral health behaviours with chronic obstructive pulmonary disease (COPD).

Materials and Methods: We conducted a case–control study of 306 COPD patients and 328 controls with normal pulmonary function. Their periodontal status and respiratory function were clinically examined and information on oral health behaviours was obtained using a validated questionnaire.

Results: Patients with COPD had fewer teeth and a higher plaque index than the controls. Univariate analysis showed that tooth brushing times and method, experience of dental floss use, dental visit and regular supra-gingival scaling, and oral health knowledge were significantly related to the risk of COPD. After adjusting for age, sex, and body mass index and stratifying by smoking status, inappropriate tooth brushing method (p=0.025 among non-smokers), lower regular supra-gingival scaling (p=0.027 among non-smokers and p<0.0001 p="0.019" p="0.044" style="font-weight: bold;">Conclusions: Poor periodontal health, dental care, and oral health knowledge were significantly associated with an increased risk of COPD. Our findings indicate the importance of promoting dental care and oral health knowledge that can be integrated into the prevention and treatment of COPD.

NEW Wonder Tooth Gel: Aloe Vera Gel benefits teeth and gums

ScienceDaily (July 17, 2009) — The aloe vera plant has a long history of healing power. Its ability to heal burns and cuts and soothe pain has been documented as far back as the 10th century. Legend has it that Cleopatra used aloe vera to keep her skin soft. The modern use of aloe vera was first recognized the 1930s to heal radiation burns. Since then, it has been a common ingredient in ointments that heal sunburn, minor cuts, skin irritation, and many other ailments. Buy Gum Correct- the best gum paint, email to icdr@hotmail.com
Full News

Texas Dental board More Lax and Lenient
The Austin American-Statesman reported Monday that the dental board is awaiting the results of a state auditor's review this month. The board, which has been dogged for years by critical audits and complaints of lax oversight, regulates 15,950 dentists, more than 33,000 hygienists and registered assistants, and 1,083 laboratories. More HERE

Association between periodontitis and Acute Myo Infarction confirmed
Journal of Periodontology-Posted online on July 16, 2009.

Background: The aim of the study was to evaluate the impact of clinical periodontal parameters and the presence of periodontal pathogens in patients with acute myocardial infarction (AMI).

Methods: A total of 104 subjects (54 patients with AMI and 50 healthy controls) were included. Subgingival plaque samples were analyzed for periodontal pathogens Aggregatibacter actinomycetemcomitans (Aa), Porphyromonas gingivalis (Pg), Tannerella forsythia (Tf) and Prevotella intermedia (Pi) using dot blot hybridization.

Results: AMI patients had a significantly higher frequency of probing depths (PD) of ≥4 mm than controls (39.2% vs. 14.9%, P <0.0001). p =" 0.0005)." p =" 0.0005)" p =" 0.0018)" style="font-weight: bold;">Conclusion: The results of our study confirm an association between periodontitis and AMI, in which periodontal destruction was correlated with the presence of periodontal pathogens. In particular, Pg might be considered as potential risk indicator for AMI.

Detection of root resorption using dentin and bone markers
Orthodontics & Craniofacial Research-Volume 12 Issue 3, Pages 229 - 235

with mild (<2>2 mm) were identified. Control group subjects with no loss of root structure or undergoing orthodontic treatment were also identified. Gingival crevicular fluid (GCF) was collected non-invasively from the mesial and distal sides of each of the four upper incisors by using filter paper strips. The eluted GCF was used for analysis using western blot and enzyme-linked immunosorbent assay (ELISA) techniques. Antibodies used were against osteopontin (OPN), (osteoprotegerin) OPG, and receptor activator of nuclear factor kappa B ligand (RANKL).

Results – Western blot analysis showed differential expression of OPN, OPG, and RANKL in the control and root resorbed subjects. However, processed forms of these proteins were only observed in the root resorbed subjects. Results from ELISA with OPG antibodies revealed a difference in OPG concentration between the control and root resorption groups. ELISA results with RANKL antibodies did show a statistically significant difference between the control group and the two study groups. The ratio RANKL/OPG was statistically higher in subjects with severe root resorption than in the control subjects.

Conclusions – Preliminary results confirm the presence of matrix proteins and cytokines in the GCF of root resorbed subjects. Further, OPG was locally present in excess amounts over RANKL and an increased RANKL/OPG in the study groups could be correlated with an increased bone resorption activity during orthodontic tooth movement.

Oral health linked to Alzheimer's risk
A study of Swedish twins shows several factors that increase risk for demetia. A new study of dementia led by USC researchers revealed that missing teeth and chronic inflammation of the mouth at an early age quadruples the risk of developing Alzheimer's disease.

The study, which was presented at the first Alzheimer's Association International Conference on Prevention of Dementia last week, examined the histories of over a hundred pairs of identical twins. Each pair consisted of one twin who had developed dementia, and one who had not. Acting on the premise that identical twins share an identical genetic blueprint, the study looked into external factors that could have led to the mental demise of the demented twin. More

Labels: , , ,

Wednesday, July 15, 2009

Dentists in UK attack Ugly Betty, Dentist/Ortho Condemed in News

Dentists attack Ugly Betty ( Jassie Jaisi koi Nahin )



Dentists have described the makers of Ugly Betty, the Channel 4 show, as irresponsible because its lead character has worn braces on her teeth for too long.
British orthodontists said they were worried TV show Ugly Betty could discourage young viewers from seeking corrective dental treatment.
Now in its third season on Channel 4, Betty - played by actress America Ferrera - is still wearing heavy "train track" braces. Full Report

Orthodontist/Dentist Cheated me
By Lasya Shashimohan, in middle page of Deccan Herald on July 17,09

I was paralysed with bewilderment and dismay. It was not my image I beheld but Bugs Bunny’s. I remembered my prior set of pretty teeth and wept at their untimely extraction and this monstrous jutting out eyesore had been gelled with permanent cement. I quietly walked off, aesthetically uglier and many a thousand poorer. Read Full news

Australian endodontists' perceptions of single and multiple visit root canal treatment,
IEJ July 2009

Aim: To ascertain endodontist's point of view (treatment philosophy, rationale and preference) regarding single- and multiple-visit root canal treatment. To identify the basis on which the choice is made and how the information necessary for the choice is acquired.

Methodology: Endodontists registered with the dental practice board of every state in Australia were contacted, and if they agreed to participate, they were interviewed either face to face or by telephone. The following topics were addressed in an interview lasting 15 to 20 min: demographics, current clinical procedures, treatment rationales and preference. A hypothetical scenario was posed to investigate which treatment regimen they would prefer to deliver if biological concerns were eliminated from consideration.

Results: Fifty-two endodontists (71% of all Australian endodontists) agreed to participate in the study. Almost all (51/52) participants had performed single-visit root canal treatment, but very few routinely performed it. A majority of participants were willing to provide single-visit treatment where patients had time constraints, and in vital cases (including elective endodontics). The most powerful factor of influencing practice change was interpersonal contact with colleagues. Publications in academic journals have a weak influence in practice change.

Conclusions: Australian endodontists strongly prefer multiple-visit over single-visit root canal treatment even in cases where biological concerns are not an issue. Operator preference rather than biological or patient considerations appear to be the primary determinant of treatment choice. If you want to do Endo in single visit CLICK HERE

Magnification devices for endodontic therapy, Does it Help ?

There are no data to draw a sound conclusion on the effect of adopting either a microscope, an endoscope, or magnifying loupes for better visualisation in endodontic therapy, in terms of clinical outcomes. Though the use of magnification devices has often been associated with technical advantages for the operator and with an improved management of the root canal due to a better visualisation of the operative field, it still has to be demonstrated that their use may lead to an improved treatment success rate. More long-term well-designed randomised trials with a large sample size are urgently needed to address the issues of the present review. Full Review

ORAL HEALTH AND INFLAMMATION IN PATIENTS WITH END-STAGE RENAL FAILURE
Perit Dial Int 29(4): 472-479, 2009
76 Peritonail Dialysis (PD) patients, 100 Hemodialysis (HD) patients, and 111 Controls were included in the study. SFR (milliliters/minute) was measured in stimulated whole saliva, SpH was measured using the Merck indicator, and SBC was measured according to the method of Ericsson: 1 mL whole saliva was added to 3 mL 0.005 N HCl and a stream of air was passed through this mixture for 20 minutes. Finally, DMFT index and PI values were calculated.

PD patients have higher SFR, SpH, and SBC values than HD patients; however, higher DMFT index and higher numbers of filled teeth were observed in PD patients. Compared to healthy controls, patients on dialysis had worse dental and periodontal findings, which might have a role in microinflammation in this group of patients. More Here


Influence of Rotational Speed on the Cyclic Fatigue of Rotary Nickel-Titanium Endodontic Instruments, Journal of Endodontics,Volume 35, Issue 7, July 2009, Pages 1013-1016

During the preparation of curved canals, rotary nickel-titanium (NiTi) instruments are subjected to cyclic fatigue, which can lead to instrument fracture. Although several factors may influence the cyclic fatigue resistance of instruments, the role of the rotational speed remains uncertain. This study was intended to evaluate the effects of rotational speed on the number of cycles to fracture of rotary NiTi instruments.

ProTaper Universal instruments F3 and F4 (Maillefer SA, Ballaigues, Switzerland) were used in an artificial curved canal under rotational speeds of 300 rpm or 600 rpm. The artificial canal was made of stainless steel, with an inner diameter of 1.5 mm, total length of 20 mm, and arc at the end with a curvature radius of 6 mm. The arc length was 9.4 mm and 10.6 mm on the straight part. The number of cycles required to fracture was recorded. Fractured surfaces and the helical shafts of the fractured instruments were analyzed by scanning electron microscopy.

The results showed approximately a 30% reduction in the observed number of cycles to fracture as rotational speed was increased from 300 to 600 RPM (p < style="font-weight: bold;"> increase in rotational speed significantly increases chances of instrument fracture.

Want to die early, Screw up your Oral Health

Oral health is an integral part of general health; oral health contributes to and is influenced by a nexus of inputs from biological, psychological, and social functioning. Little is known about the relationship between markers of oral health and subsequent survival in late life.

This study found Oral health was significantly associated with subsequent survival in a sample of oldest-old individuals, although psychosocial factors were stronger predictors. MORE here

Temporary orthodontic anchorage devices for improving occlusion
Orthodontics & Craniofacial Research, Volume 12 Issue 3, Pages 195 - 205

Studies at Orhodontics Dept at Baylor have shown that successful and consistent clinical results are possible with MI (Microimplant) use. Although iatrogenic trauma may occur during the placement of MI, a translational research model has provided data used to develop a placement protocol in order to avoid this dilemma. Absolute skeletal anchorage is a reality with MI use and can be used for successful orthodontic outcomes in the correction of Class II bimaxillary protrusion malocclusions to ideal Class I occlusions. Moreover, meticulous care has been shown to be essential with treatment planning and during placement of MI. Significant and extensive damage can occur with poor placement while healing is possible following minor trauma. Start using microimplants today.

Mouth Body connection

CVD has a wide range of categories, which affect adults in the United States every day including high blood pressure, coronary heart disease, stroke, and heart failure. A recent study that will be cited during the presentation explored the existence of bacteria known to cause periodontitis and the growth of blood vessel walls, which is a symptom of CVD. After examining the subjects used, the investigators found a positive connection between the growth of blood vessel walls and the existence of bacteria found in dental plaque, causing periodontitis. More

Labels: , ,

Sunday, November 4, 2007

Are you wasting your time, Giving Multiple Intracanal Dressings?

One study just published clearly shows that intra canal dressings are a waste of time.

Reference
M. E. Vianna, H.-P. Horz, G. Conrads, A. A. Zaia, F. J. Souza-Filho, B. P. F. A. Gomes (2007)
Effect of root canal procedures on endotoxins and endodontic pathogens
Oral Microbiology and Immunology 22 (6), 411–418. Read on ..........


Method: Twenty-four teeth were selected for the present study. Chemo-mechanical preparation was performed using 2% CHX gel and three different intracanal medicaments [Ca(OH)2 paste; 2% CHX gel; and Ca(OH)2 + 2% CHX gel]. A quantitative chromogenic Limulus amoebocyte lysate assay was used to measure the amount of endotoxin. Aerobic and anaerobic techniques were used to isolate and identify bacteria, and to determine the bacterial reduction by counting colony-forming units (CFU).

Results: Endotoxins and bacteria were present in 100% of the initial samples, with endotoxin concentration ranging from 62.93 to 214.56 UE/ml and CFU ranging from 4 × 105 to 2.6 × 106. After chemo-mechanical preparation a mean endotoxin reduction of 44.4% was found. Eight (33.3%) root canals were still positive by culture analysis with a mean reduction of bacteria (CFU) of 99.96%. After 7 days of intracanal dressing, endotoxin concentration decreased by only 1.4% compared with S2, and residual bacteria were recovered by culture analysis in 13 cases (54.1%). No significant difference was found among different intracanal medicaments.

Conclusion: Relatively high values of endotoxin were still present in the root canal after chemo-mechanical preparation although the majority of bacteria were eliminated. No improvement was achieved by 7 days of intracanal dressing.

To achieve best possible chemo Mechanical cleaning, you need to use non tapered instruments.

Take action today and it will change your life for sure, register for a course today.

New approach to perio Treatment
A new study published in the November issue of the Journal of Dental Research shows that application of beneficial bacteria as an adjunct to traditional therapy may become a valid, non-antibiotic treatment approach for periodontitis (gum disease). In this small-scale animal study, researchers applied a mixture of beneficial bacteria after scaling and root planing (removal of bacterial plaque from the crown and root of the tooth surface), a concept called Guided Pocket Recolonization, or GPR. With the emergence of antibiotic resistance and the lack of non-antibiotic treatment options, this GPR approach may provide a valuable addition or alternative to treatment options for periodontitis.

This is the first study to test the concept of bacterial replacement therapy in the treatment of plaque-related periodontal disease, and analysis of the data showed, in a beagle dog model, that when beneficial bacteria were applied in periodontal pockets adjunctively after root planing, repopulation by bacteria associated with gum disease was delayed and reduced, as was the degree of inflammation, at a clinically significant level. So keep watching for new developments in this area.

Labels: