scholarly journals The relationship between different types of caries and periodontal disease severity in middle-aged and elderly people: findings from the 4th National Oral Health Survey of China

2021 ◽  
Author(s):  
Lixia Yu ◽  
Xing WANG ◽  
Xi Ping FENG ◽  
Bao Jun TAI ◽  
De Yu HU ◽  
...  
Keyword(s):  
Periodontal Disease ◽  
Elderly People ◽  
Disease Severity ◽  
Type A ◽  
Type B ◽  
Middle Aged ◽  
Aged People ◽  
Different Types ◽  
Type C ◽  
The Relationship

Abstract Background: The relationship between dental caries and periodontal disease is still controversial. The objective of this study is to explore the relationship between different types of caries and periodontal disease severity in middle-aged and elderly people in China.Methods: The study population consisted of 4,387 middle-aged and 3,225 elderly subjects. Caries were divided into the following three types: type A, crown caries; type B, lesions involving both the crown and root, representing a mixed type; and type C, root caries. These three types together represent the overall caries situation, which we call type ABC. Caries were quantitated by decayed and filled teeth (DFT index). Periodontitis was evaluated by clinical attachment loss.Results: Middle-aged people with periodontitis had a significant association with DFT of type ABC (OR: 1.09, 95% CI: 1.06‐1.11), type A (OR: 1.05, 95% CI: 1.02‐1.08), type B (OR: 1.20, 95% CI: 1.16-1.28) and type C (OR: 1.36, 95% CI: 1.15-1.60). Elderly people with periodontitis had a significant association with DFT of type ABC (OR: 1.05, 95% CI: 1.03-1.07), type B (OR: 1.07, 95% CI: 1.05-1.10) and type C (OR: 1.30, 95% CI: 1.19-1.42) but not type A.Conclusions: Different types of caries in middle-aged people and overall caries and caries types involving the root surface in elderly people were significantly associated with periodontal disease severity.

scholarly journals The Relationship Between Different Types of Caries and Periodontal Disease Severity in Middle-Aged and Elderly People: Findings from the 4th National Oral Health Survey of China

2020 ◽  
Author(s):  
Lixia Yu ◽  
Xing WANG ◽  
Xi Ping FENG ◽  
Bao Jun TAI ◽  
De Yu HU ◽  
...  
Keyword(s):  
Periodontal Disease ◽  
Elderly People ◽  
Disease Severity ◽  
Type A ◽  
Type B ◽  
Middle Aged ◽  
Aged People ◽  
Different Types ◽  
Type C ◽  
The Relationship

Abstract Background: To explore the relationship between different types of caries and periodontal disease severity in middle-aged and elderly people in China. Methods: The study population consisted of 4,387 middle-aged and 3,225 elderly subjects. Caries was divided into three types: type A, crown caries; type B, lesions involving both the crown and root, which represents mixed type; and type C, root caries. These three types together represent the overall caries situation, which we call type ABC. Caries was quantitated by decayed and filled teeth (DFT index). Periodontitis was evaluated by clinical attachment loss.Results: Middle-aged people with periodontitis had a significant association with DFT of type ABC (OR: 1.09, 95% CI: 1.06‐1.11), type A (OR: 1.05, 95% CI: 1.02‐1.08), type B (OR: 1.20, 95% CI: 1.16-1.28) and type C (OR: 1.36, 95% CI: 1.15-1.60). Elderly people with periodontitis had a significant association with DFT of type ABC (OR: 1.05, 95% CI: 1.03-1.07), type B (OR: 1.07, 95% CI: 1.05-1.10) and type C (OR: 1.30, 95% CI: 1.19-1.42)，but not with type A.Conclusions: Different types of caries in middle-aged people, the overall caries and caries types involving the root surface in elderly people were significantly associated with periodontal disease severity.

scholarly journals The relationship between different types of caries and periodontal disease severity in middle-aged and elderly people: findings from the 4th National Oral Health Survey of China

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Li Xia Yu ◽  
Xing Wang ◽  
Xi Ping Feng ◽  
Bao Jun Tai ◽  
De Yu Hu ◽  
...  
Keyword(s):  
Periodontal Disease ◽  
Elderly People ◽  
Disease Severity ◽  
Elderly Subjects ◽  
Type B ◽  
Middle Aged ◽  
Clinical Attachment Loss ◽  
Different Types ◽  
Type C ◽  
The Relationship

Abstract Background The relationship between dental caries and periodontal disease is still controversial. The objective of this study was to explore the relationship between different types of caries and periodontal disease severity in middle-aged and elderly people in China. Methods The study population consisted of 4407 middle-aged and 4117 elderly subjects. Caries were divided into the following three types: type A, crown caries; type B, lesions involving both the crown and root, representing mixed-type caries; and type C, root caries. These three types together represent the overall caries situation, which we call type ABC. Caries were quantitated by decayed and filled teeth (DFT index). Periodontitis was evaluated by clinical attachment loss. Results Middle-aged people with periodontitis had a significant association with DFT type B (OR: 1.21, 95% CI 1.17–1.25) and type C (OR: 1.40, 95% CI 1.24–1.56). Elderly people with periodontitis had a significant association with DFT type C (OR: 1.28, 95% CI 1.21–1.35). Conclusions In China, caries types B/C were positively correlated with periodontitis in the middle-aged group, and only caries type C was positively correlated with periodontitis in the elderly group.

A Molecular Dynamics Simulation Study on the Relationship between Hydrogen Bond and Damping Properties of AO-70/NBR Composites

2017 ◽  
Vol 748 ◽  
pp. 29-34 ◽  
Author(s):  
Jing Zhu ◽  
Xiu Ying Zhao ◽  
Meng Song ◽  
Yue Han ◽  
Li Liu ◽  
...  
Keyword(s):  
Md Simulation ◽  
Type A ◽  
Dynamics Simulation ◽  
Butadiene Rubber ◽  
Damping Properties ◽  
Type B ◽  
Fractional Free Volume ◽  
Type C ◽  
Hindered Phenol ◽  
The Relationship

This work was try to study the number and types of hydrogen bonds (H-bonds) formed in hindered phenol AO-70/nitrile butadiene rubber (NBR) composites and their contributions to the damping properties by molecular dynamic (MD) simulation and experimental methods. MD simulation results showed that there were four types of H-bonds, namely, type A (AO-70) –OH...NC– (NBR) H-bonds in AO-70/NBR composites, type B (AO-70) –OH...O=C– (AO-70) H-bonds, type C (AO-70) –OH...OH–(AO-70) and D (AO-70) –OH...O–C– (AO-70) H-bonds, what's more, type A and type B H-Bonds formed more easily than others. Fourier transform infrared spectroscopy (FTIR) confirmed the existence of H-bonds. Meanwhile, the AO-70/NBR composites with AO-70 content of 109 phr had the largest number of H-bonds, smallest fractional free volume (FFV) and resulting in the optimistic damping performance of the composites.

The Classification Research about the Uncertain Factors of Job Shop Manufacturing Shop Re-Scheduling

2012 ◽  
Vol 621 ◽  
pp. 344-347
Author(s):  
Mao Gen Ge ◽  
Ming Zhou Liu ◽  
Ming Xin Zhang ◽  
Jing Hu ◽  
Wen Rui Wu ◽  
...  
Keyword(s):  
Production Process ◽  
Job Shop ◽  
Type A ◽  
Type B ◽  
Uncertain Environment ◽  
Partial Failure ◽  
Scheduling Scheme ◽  
Different Types ◽  
Type C

In order to have an effective induction and treatment about the various uncertain factors in the process of Job Shop manufacturing shop re- scheduling under the uncertain environment, Through the description of all kinds of uncertainties and disturbances during the workshop production process, here put forward a way to divide these uncertain factors into different types, such as type A uncertain factors which can cause scheduling scheme invalid, type B uncertain factors which have an uncertain impact on scheduling scheme and type C uncertain factors which may lead the schedule partial failure.

scholarly journals THE DISTRIBUTION OF FRIEDLÄNDER'S BACILLI OF DIFFERENT TYPES

1930 ◽  
Vol 52 (4) ◽  
pp. 539-545 ◽  
Author(s):  
Louis A. Julianelle
Keyword(s):  
Type A ◽  
Immune Serum ◽  
Type B ◽  
Serological Type ◽  
Sugar Fermentation ◽  
Precipitin Reaction ◽  
Different Types ◽  
Fermentative Activity ◽  
Type C ◽  
Ferment Lactose

In a study of the distribution of the specific types of Friedländer's bacillus, it is shown that: (1) Of 80 strains 52 per cent belong to Type A, 15 per cent to Type B, 9 per cent to Type C, and 24 per cent to Group X. (2) Type A contains for the most part strains derived from diseases of man and more than 70 per cent are associated with pneumonia in man. (3) Type B includes the greatest number of strains from animal sources, while the heterogeneous strains comprising Group X come from the greatest variety of diseases. It was demonstrated that in a patient suffering with pneumonia due to Friedländer's bacillus (Type A), a specific precipitin reaction of the urine occurred in the corresponding (Type A) immune serum. A study of the sugar fermentation reactions of Friedländer's bacillus shows that (1) there is no correlation between serological type and fermentative activity; (2) the fermentation reactions are variable and therefore not reliable for distinguishing Friedländer's bacillus from closely allied organisms; (3) the strains of Group X show the greatest variation in fermentation, and (4) of 15 strains unable to ferment lactose, 13 belong to Type A.

scholarly journals The Relationship between Morphology, Colonial Appearance, Agglutinability, and Virulence to Mice of Certain Variants of Bacterium aertrycke

1930 ◽  
Vol 30 (1) ◽  
pp. 40-54 ◽  
Author(s):  
G. S. Wilson
Keyword(s):  
Virulent Strain ◽  
Type A ◽  
Type B ◽  
Smooth Form ◽  
Type D ◽  
Virulent Type ◽  
Type C ◽  
Transitional Forms ◽  
The One ◽  
The Relationship

1. Analysis of a series of 135 strains of B. aertrycke indicates that at least four well-defined types may be recognised on the basis of morphology, colonial formation, virulence to mice, and to a less extent agglutination by salt, serum, and acids. These types comprise: (i) type A—the normal smooth virulent form; (ii) type B—a smooth form of low virulence; (iii) type C—a roughish, so-called ichthyotic, form of low virulence; (iv) type D—the really rough avirulent form. Between these well-defined types certain transitional forms may sometimes be recognised, the virulence of which is frequently of an order intermediate between that of the A type on the one hand, and the B, C, or D types on the other.2. Evidence is brought to show that if a virulent strain is sub-cultured daily, under conditions known to lead to a fall in virulence of the whole culture, a gradual replacement occurs of the virulent type A bacilli by the avirulent B, C or D types. So long as an adequate proportion, which is very small, of type A bacilli persists in the culture the virulence of the whole culture remains fairly high; but when all type A bacilli have been replaced by bacilli of the B, C or D types the virulence of the whole culture falls considerably.

Complex treatment of periodontitis: patient’s reaction to the therapy

2020 ◽  
Vol 25 (2) ◽  
pp. 97-100
Author(s):  
A. K. Iordanishvili ◽  
V. A. Guk ◽  
A. A. Golovko
Keyword(s):  
Elderly People ◽  
Periodontal Diseases ◽  
Personal Characteristics ◽  
The Elderly ◽  
Comprehensive Treatment ◽  
Complex Treatment ◽  
Middle Aged ◽  
Aged People ◽  
Dental Rehabilitation ◽  
Success Of Treatment

Relevance. The success of treatment of periodontal diseases directly depends on the patient’s response to the therapy, therefore, the characteristics of the person’s personal characteristics can affect both the effectiveness of treatment and the prevention of relapse of the disease.Purpose. To study the features of the internal picture of the disease in the process of complex treatment of adult patients suffering from chronic generalized periodontitis.Materials and methods. The generally accepted comprehensive treatment of chronic generalized periodontitis in 69 middle-aged and elderly men was carried out taking into account the personal response of patients Solovyov «Psychosensory-anatomical-functional maladaptation syndrome».Results. When patients were discharged from the hospital, there was a difference in the phenomena of maladaptation among the elderly and middle-aged: in middle-aged people, sufficient adaptation to the conditions of existence was determined; in elderly people, due to the existing comorbid pathology, a state of maladaptation was diagnosed, which was caused by the presence of complaints of defects in the dentition.Conclusion. In elderly people, as soon as possible after completion of treatment in a hospital, dental rehabilitation cannot be considered completed, which requires the adoption of organizational measures for their timely provision of dentures.

Relationships between motivation and hostility among type A and type B middle-aged men

1987 ◽  
Vol 21 (2) ◽  
pp. 103-113 ◽  
Author(s):  
Karen Hooker ◽  
James A. Blumenthal ◽  
Ilene Siegler
Keyword(s):  
Type A ◽  
Type B ◽  
Middle Aged

scholarly journals Lense-Thirring QPO model testing by QPO phenomena in GX339-4 2010 outburst

2012 ◽  
Vol 8 (S290) ◽  
pp. 211-212
Author(s):  
H. Q. Gao ◽  
J. L. Qu ◽  
Z. Zhang ◽  
J. N. Zhou
Keyword(s):  
Black Hole ◽  
Model Prediction ◽  
Model Testing ◽  
Type B ◽  
Different Types ◽  
Type C

AbstractLense-Thirring QPO model is a promising model to explain QPO phenomena (Ingram et al. (2009)). In this model the QPO results from Lense-Thirring precession of a optical translucent inner hot flow in a truncated disc geometry. Now we check this model with different types QPO (see (Belloni et al. (2011)) for a recent review) of black hole transient (BHT) GX 339-4 2010 outburst and suggest type C QPOs are mainly coincident with this model prediction while type B QPOs are not.

scholarly journals The effectiveness of TiO2 additions to mortar to maintain initial conditions in terms of its reflectance to solar radiation

2017 ◽  
Vol 17 (3) ◽  
pp. 39-56 ◽  
Author(s):  
Sérgio Roberto Andrade Dantas ◽  
Fulvio Vittorino ◽  
Kai Loh
Keyword(s):  
Solar Radiation ◽  
Ultraviolet Radiation ◽  
Initial Conditions ◽  
Type A ◽  
Just Noticeable Difference ◽  
Type B ◽  
Climate Conditions ◽  
Type D ◽  
Type C ◽  
Over Time

Abstract Contact of facades with degradation agents and direct incidence of ultraviolet radiation on external coatings make them more opaque over time, affecting their colour and reflectance characteristics. This study evaluated the effect of adding different TiO2 contents to mortars applied in concrete substrates in order to verify the reflectance maintenance on surfaces after exposure over time. Mortar with different concentrations of TiO2 (1%, 5%, 10%) were produced in relation to the total dry premix, added as a powder and compared to unpainted mortar without TiO2 (type "A") and painted mortar without TiO2 (type "B"), both used as a reference for colour and reflectance. Exposed over 16 months to climate conditions in São Paulo, regarding the maintenance of reflectance and solar radiation, the results showed that type "B" (0%TiO2) painted mortar presented the best performance. Type "C" (1%TiO2) and type "D" (5%TiO2) unpainted mortar remained more stable. Type "A" (0%TiO2) and type "E" (10%TiO2) unpainted mortar showed greater differences according to the Just Noticeable Difference (JND) range caused by dirt pick up.

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