The bacterial and yeast flora of root surface caries in elderly Chinese : clinical and in vitro studies

2004 ◽  
Author(s):  
Song Shen
Keyword(s):  
Root Surface ◽  
In Vitro Studies ◽  
Yeast Flora ◽  
Elderly Chinese ◽  
Root Surface Caries

Hard-tissue Substrates for Evaluation of Cariogenic and Anti-cariogenic Activity in situ

1992 ◽  
Vol 71 (3_suppl) ◽  
pp. 913-919 ◽  
Author(s):  
J.R. Mellberg
Keyword(s):  
Root Surface ◽  
Hard Tissue ◽  
Suitable Alternative ◽  
Human Enamel ◽  
Human Dentin ◽  
Bovine Enamel ◽  
Root Surface Caries

Hard-tissue substrates include primarily human and bovine enamel and human dentin. They have been used for in situ studies in a natural or sound condition, as well as flattened or containing an in vitro-formed caries-like lesion. Human enamel and dentin are generally the substrates of choice for studies of coronal and root-surface caries, respectively, but bovine enamel appears to offer a suitable alternative for many studies of enamel caries. Substrates with caries-like lesions will respond more rapidly to changes in the intra-oral mineral equilibrium and will allow both demineralization and remineralization to be determined. Findings from some studies suggest that caries-like lesions may respond somewhat differently, depending upon the degree of mineralization of the surface layer. Because in vitro findings with dentin show it to be significantly more soluble in acid than enamel, results from a study that used dentin may not be directly applicable to enamel. Both enamel and dentin substrates can be used in thin-section models. Hard-tissue substrates can also differ, depending upon their intra-oral location. Locations that result in the accumulation of plaque will behave differently from those that are plaque-free. So that plaque would accumulate, substrates have been placed approximally, beneath a fabric or steel mesh, in a protected trough, beneath a metal band or within a depression on the buccal surface. For studies requiring a determination of both demineralization and remineralization, human enamel or dentin containing a surface-softened caries-like lesion and covered with a uniform natural plaque are the substrates of choice.

ROOT-SURFACE CARIES FORMATION: EFFECT OF IN VITRO APF TREATMENT

1998 ◽  
Vol 129 (4) ◽  
pp. 449-453 ◽  
Author(s):  
M. JOHN HICKS ◽  
CATHERINE M. FLAITZ ◽  
FRANKLIN GARCIA-GODOY
Keyword(s):  
Root Surface ◽  
Root Surface Caries

Effect of 2% plain and fluoridated milk on root surface caries in vitro.

2005 ◽  
Vol 25 (2) ◽  
pp. 118-123 ◽  
Author(s):  
Romana Ivancakova ◽  
Jeffrey D. Harless ◽  
Mary M . Hogan ◽  
James S. Wefel
Keyword(s):  
Root Surface ◽  
Root Surface Caries

Argon Laser Irradiation in Root Surface Caries: in Vitro Study Examines Laser’S Effects

1994 ◽  
Vol 125 (4) ◽  
pp. 401-407 ◽  
Author(s):  
Gary H. Westerman ◽  
M. John Hicks ◽  
Catherine M. Flaitz ◽  
Richard J. Blankenau ◽  
G. Lynn Powell ◽  
...  
Keyword(s):  
Laser Irradiation ◽  
In Vitro Study ◽  
Argon Laser ◽  
Root Surface ◽  
Vitro Study ◽  
Root Surface Caries

Bacterial and yeast flora of root surface caries in elderly, ethnic Chinese

Oral Diseases ◽  
2002 ◽  
Vol 8 (4) ◽  
pp. 207-217 ◽  
Author(s):  
S Shen ◽  
LP Samaranayake ◽  
HK Yip ◽  
JE Dyson
Keyword(s):  
Root Surface ◽  
Yeast Flora ◽  
Ethnic Chinese ◽  
Root Surface Caries

Dental Caries in Adult and Elderly Chinese

1989 ◽  
Vol 68 (12) ◽  
pp. 1771-1776 ◽  
Author(s):  
W.-M. Luan ◽  
V. Baelum ◽  
X. Chen ◽  
O. Fejerskov
Keyword(s):  
Dental Caries ◽  
Root Surface ◽  
Sampling Procedure ◽  
Caries Experience ◽  
Rural Residents ◽  
Dental Services ◽  
Cross Sectional ◽  
Occlusal Surfaces ◽  
Elderly Chinese ◽  
Root Surface Caries

This paper reports on a study of dental caries conducted among 1744 urban and rural Chinese (from 20 to 80 years old), who were selected by means of a systematic srratifzed sampling procedure. The prevalence of one or more decayed or filled teeth ranged from 48 to 90% in urban residents, and from 51 to 97% in rural residents, depending on age. The mean number of decayed or filled teeth ranged from 1.2 (± 1.9) among 20-29-year-olds, to 6.2 (± 5.5) among 70+-yearolds, and was highest among rural residents. Among 20-29-year-olds, the main components of the DFT were enamel lesions and fillings. Among 30-49-year-olds, the DFT consisted mainly of enamel lesions and filled teeth, as well as teeth with lesions involving the pulpal tissues. In subjects over the age of 50 years, lesions involving pulpal tissues were the predominant type, followed by root-surface lesions. In subjects below the age of 50 years, most of the caries experience derived from coronal surfaces, particularly occlusal surfaces. Root-surface caries was predominantly a feature of persons aged 50 years and above. Despite a large number of surfaces being at risk of root-surface caries, less than 10% of the surfaces were so affected. Although cross-sectional in nature, these data indicate that when the oral hygiene standards are poor, caries lesions continue to develop and progress throughout life. With age, dental caries becomes a substantial oral health problem in this population of adult and elderly Chinese, despite the availability of some dental services.

Influence of cementum on the demineralization and remineralization processes of root surface caries in vitro

2002 ◽  
Vol 60 (4) ◽  
pp. 241-247 ◽  
Author(s):  
Wolfram Dietz ◽  
Ulrike Kraft ◽  
Ingrid Hoyer ◽  
Gunilla Klingberg
Keyword(s):  
Root Surface ◽  
Root Surface Caries
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