adam

About Sigurdsson A, Garland RW, Le KT, Rassoulian SA.

This author has not yet filled in any details.
So far Sigurdsson A, Garland RW, Le KT, Rassoulian SA. has created 994 blog entries.

Healing of Periapical Lesions after Endodontic Treatment with the GentleWave Procedure: A Prospective Multicenter Clinical Study.

INTRODUCTION:

This report includes outcomes for a group of patients with significant periapical lesions who were treated and evaluated in two single-arm, multicenter, prospective, nonsignificant risk clinical studies.

METHODS:

Forty-five teeth were from 45 patients who met the inclusion criteria and consented for the clinical studies and were diagnosed with periapical lesions with periapical index score ≥3. Patients were treated with a standardized treatment protocol including instrumentation to an apical diameter of #20 without orifice enlargement, the GentleWave Procedure, and warm vertical obturation. Clinical signs and radiographic assessments were evaluated at 12 months to assess healing. Success was classified as healing or healed and accounted for the cumulative success rate of healing. Statistical analyses were performed by using Fisher exact test, Pearson correlation, and multivariate logistic regression analyses.

RESULTS:

At 12 months, 44 of 45 teeth (97.8%) were evaluated. The cumulative success rate for the GentleWave Procedure was 97.7%. Forty-three of 44 teeth were completely functional; all teeth had complete resolution for measured indices of mobility, soft tissue lesions, sinus tract, and furcation involvement. No patients experienced moderate or severe pain at 2, 7, and 14 days after procedure. Although only 1 patient was unsuccessful and the presence of clinical symptoms and type of periradicular diagnosis at 12 months were correlated with an unsuccessful outcome, the analyses were limited by the sample size.

CONCLUSIONS:

In this case series analysis, treatment of sizable periapical lesions with the GentleWave Procedure resulted in a success rate of 97.7% at 12-month re-evaluation

By |2019-02-10T21:13:17+00:00January 9th, 2018|Other|

Is Dental Amalgam Toxic to Children of Color?

Toothbrushing is considered fundamental self-care behavior for maintenance of oral health, and brushing twice a day has become a
social norm, but the evidence base for this frequency is weak. This systematic review and meta-analysis aims to assess the effect of
toothbrushing frequency on the incidence and increment of carious lesions. Medline, Embase, Cinahl, and Cochrane databases were
searched. Screening and quality assessment were performed by 2 independent reviewers. Three different meta-analyses were conducted:
2 based on the caries outcome reported in the studies (incidence and increment) with subgroup analyses of categories of toothbrushing
frequency; another included all studies irrespective of the caries outcome reported with the type of dentition as subgroups. Metaregression
was conducted to assess the influence of sample size, follow-up period, diagnosis level for carious lesions, and methodological
quality of the articles on the effect estimate. Searches retrieved 5,494 titles: after removing duplicates, 4,305 remained. Of these, 74
were reviewed in full, but only 33 were eligible for inclusion. Self-reported infrequent brushers demonstrated higher incidence (odds
ratio [OR], 1.50; 95% confidence interval [CI], 1.34 to 1.69) and increment (standardized mean difference [SMD], 0.28; 95% CI: 0.13 to
0.44) of carious lesions than frequent brushers. The odds of having carious lesions differed little when subgroup analysis was conducted
to compare the incidence between ≥2 times/d vs <2 times/d (OR: 1.45; 95% CI: 1.21 to 1.74) and ≥1 time/d vs <1 time/d brushers (OR:
1.56; 95% CI: 1.37 to 1.78). When meta-analysis was conducted with the type of dentition as subgroups, the effect of infrequent brushing
on incidence and increment of carious lesions was higher in deciduous (OR: 1.75; 95% CI: 1.49 to 2.06) than permanent dentition (OR:
1.39; 95% CI: 1.29 to 1.49). Findings from meta-regression indicated that none of the included variables influenced the effect estimate.

By |2018-10-21T23:11:05+00:00January 1st, 2018|Mercury|

The hematological changes in dental staff: their relation to mercury vapor.

Background: Dental staff are exposed to mercury during their work. Aim: To determine the effect of mercury on their hematological parameters.

Subjects & Methods: 83 dental staff, 43 use amalgam and 40 not, and 56 healthy persons, 19 have amalgam filling and 37 without it, were enrolled. All were subjected to measurement of mercury in hair, nails and complete blood count.

Results: A significant increase of mercury hair and nail was found in the exposed dental staff when compared to both control groups. A significant increase of mercury hair in a non-exposed dental staff was detected when compared to the control group without amalgam. A Significant decrease of hemoglobin and absolute monocytes count was found in both groups of dental staff when compared to the control group without amalgam. 33.3% and 20% of the exposed and non- exposed staff had anemia.

Conclusion: Exposed and nonexposed dental staff are liable to complications induced by mercury.

By |2018-08-04T00:10:14+00:00January 1st, 2018|Mercury|

Revision of reciprocal action of mercury and selenium.

Diverse forms of mercury (Hg) have various effects on animals and humans because of a variety of routes of administration. Inorganic mercury (iHg) binds to thiol groups of proteins and enzymes in one’s body or is methylated by microorganisms. Organic form of Hg, contrary to the iHg, is more stable but may be demethylated to Hg2+ in the tissue of intestinal flora. Selenium (Se) also occurs in a variety of chemical forms in one’s body but both of these elements behave very differently from one another. Mercury binding to selenide or Se-containing ligands is a primary molecular mechanism that reduces toxicity of Hg. Complexes formed in such a way are irreversible, and thus, biologically inactive. Se deficiency in a human body may impair normal synthesis of selenoproteins and its expression because expression of mRNA may be potentially regulated by the Se status. This paper provides a comprehensive review concerning Hg-Se reciprocal action as a potential mechanism of protective action of Se against Hg toxicity as well as a potential detoxification mechanism. Although interactions between Hg-Se have been presented in numerous studies concerning animals and humans, we have focused mainly on animal models so as to understand molecular mechanisms responsible for antagonism better. The review also investigates what conclusions have been drawn by researchers with respect to the chemical species of Se and Hg (and their relationship) in biological systems as well as genetic variations and expression and/or activity of selenoproteins related to the thioredoxin (thioredoxin Trx/TrxR) system and glutathione metabolism.

By |2018-08-08T23:56:06+00:00January 1st, 2018|Mercury|

The effect of gaseous ozone in infected root canal.

OBJECTIVES:
During the treatment of chronic apical periodontitis and pulp necrosis the main role is to irrigate the root canal.

AIM:
The aim of this in vivo study was to irrigate with 0.9% NaCl (Natrium Chloride), 2.5 % NaOCl (Sodium Hypochlorite Solution, Sigma Aldrich – Germany) and 2% CHX (Chlorhexidine Digluconate Solution, Sigma Aldrich – Spain) combined with Gaseous Ozone (Prozone WH, Austria).

MATERIAL AND METHODS:
This study was realised in the University Dentistry Clinical Centre of Kosovo (UDCCK), respectively in the Department of Endodontic and Dental Pathology, Dental Branch, Faculty of Medicine, Prishtina, Kosovo. The 40 subjects involved in this study belonged to both genders, in age between 15 -65 years. The sample selection was randomised. The retroalveolar radiography for each patient was taken in the suspected tooth. As a therapeutic plan the authors decided to disinfect the root canal with the irrigants, as follows: 2.5 % NaOCl, 2 % CHX and gaseous ozone.

RESULTS:
The statistical analyses were based on Kruskal – Vallis test, X – test, DF = 3, r < 0.01. In the isolated average number of the aerobe and anaerobe bacteria colonies, when gaseous ozone was used, there was the significant statistical difference.

CONCLUSIONS:
When gaseous ozone was combined with irrigants 0.9%, 2.5 % NaOCl and 2% CHX, it was concluded that the number of colonies of aerobic and anaerobic bacteria was reduced.

By |2018-08-03T23:54:12+00:00January 1st, 2018|Other|

Integrative and collaborative care models between pediatric oral health and primary care providers: a scoping review of the literature.

OBJECTIVES:
Collaborative and/or integrative care between oral health and primary care providers can increase access to care to a more expansive population, helping to mitigate oral health related disease. The objective of this review was to present and evaluate different types of care models that exist between oral health and primary care providers in pediatric settings.

METHODS:
A literature search was conducted using five databases: MEDLINE/PubMed, ISI Web of Science, Dentistry and Oral Sciences Source, Cochrane Database, and EMBASE, to identify literature from January 1990 to January 2016. Combinations of controlled terms were utilized. Eligible sources targeted pediatric populations ages 1-17 and provided descriptions of existing collaborative and/or integrative models.

RESULTS:
Data related to the practice model, oral care provided, level of integration/collaboration and workflow were extracted. Sixteen articles were included that discussed 24 models of collaboration. These models provided ranges of services, but each offered a minimum of oral health risk assessment, oral health instruction, topical fluoride application and assessment for further treatment. These models included different levels of collaboration based off a ranking system created by the authors with 16.6 percent (4) classified as low, 54.2 percent (13) as medium and 29.2 percent (7) as high.

CONCLUSIONS:
Existing care models offered varying services and levels of integration and/or collaboration, but each offered a baseline of oral care. Most of these collaborations were based within Federally Qualified Health Centers and aimed to ease access to care issues.

By |2018-08-06T23:53:17+00:00January 1st, 2018|Other|

Remission of aggressive autoimmune disease (dermatomyositis) with removal of infective jaw pathology and ozone therapy: review and case report.

INTRODUCTION:
This case uniquely reports a connection between endodontically infected teeth and systemic disease, and additionally presents ozone therapy as a unique therapy and immune system modulator. It is the world’s first such reported case and the treatment holds invaluable lessons in assessing the “unknown” causes of autoimmunity and inflammation. Additionally, it presents ozone therapy as a most needed unique, non-toxic and powerful anti-infective agent, anti-inflammatory and immune modulator.

CASE PRESENTATION:
The patient was a Mexican male field laborer, age 48 years, in inflammatory crisis with a confirmed case of dermatomyositis. He had received massive prednisone, and powerful immune suppressing drugs just to function, while disease still raged. I encountered him in the field in June 2012 with severe muscle pain, weakness, and diffuse generalized skin rash, essentially unable to do his work. Creatine kinase peaked at 9293 U/L. History and physical examination findings caused suspicion of subclinical infections in endodontically treated teeth. This impression was confirmed in subsequent dental evaluation. He fully recovered after dental infections were confirmed and surgically removed, while receiving ozone therapy until all symptoms and laboratory abnormalities normalized.

CONCLUSION:
Dental focus of occult infection may be a prime cause/trigger of autoimmune disorders and inflammatory disorders, requiring surgical intervention to remove. Ozone therapy, little known in conventional medicine, has been shown in the literature and in this case to be a powerful and safe immune modulator and anti-infective agent. This case has significant relevance across the entire spectrum of both medical and dental practice. It also emphasizes the need for individualized assessment and treatment rather than symptomatic pharmacological approaches treating a “disease” rather than the patient. Subclinical dental infection and ozone therapy are reviewed.

By |2018-08-10T23:50:02+00:00January 1st, 2018|Other|

Sugar industry sponsorship of germ-free rodent studies linking sucrose to hyperlipidemia and cancer: An historical analysis of internal documents.

In 1965, the Sugar Research Foundation (SRF) secretly funded a review in the New England Journal of Medicine that discounted evidence linking sucrose consumption to blood lipid levels and hence coronary heart disease (CHD). SRF subsequently funded animal research to evaluate sucrose’s CHD risks. The objective of this study was to examine the planning, funding, and internal evaluation of an SRF-funded research project titled “Project 259: Dietary Carbohydrate and Blood Lipids in Germ-Free Rats,” led by Dr. W.F.R. Pover at the University of Birmingham, Birmingham, United Kingdom, between 1967 and 1971.

By |2018-09-26T22:42:46+00:00January 1st, 2018|Other|

Within-subject associations between inflammation and features of depression: Using the flu vaccine as a mild inflammatory stimulus.

Conclusions: Minor increases in inflammation were associated with corresponding increases in features of depression, and these associations occurred in the absence of any physical symptoms. The influenza vaccine could be used to probe causal relationships with a high degree of ecological validity, even in high-risk and vulnerable populations, to better understand the role of inflammation in the pathogenesis of depression.

Go to Top