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Results for “Root Caries”

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PubMed1991

[An in vitro trial of the chemomechanical treatment of root caries: the Caridex system].

This study was aimed to verify the debridement potential of the Caridex system against radicular cervical caries. 14 freshly extracted teeth with cervical caries were split and the fragments were freed from the dentinal caries using three methods: root planning (with a white stone), conventional excavation with a bur (tungsten) and the Caridex system. The results show that the Caridex system can partially dissolve the decayed dentin but leaves behind smeared surfaces as well as part of dentin infiltrated by bacteria. The root planning treatment smears the dentinal surface and thus blocks the tubules which also appeared to be infiltrated with bacteria. The excavation method allowed for a complete elimination of the decayed dentinal tissue down to the hypermineralized zone.

Dental Caries↗
PubMed1998

Study of root caries in an artificial mouth.

The object of this project was to develop a laboratory model system to study root and enamel caries. Model plaque biofilms containing consortia of four (Streptococcus mutans, Streptococcus sobrinus, Actinomyces naeslundii, and Lactobacillus rhamnosus) or six (S mutans, S sobrinus, S mitis, A naeslundii, L rhamnosus, and Veillonella dispar) species of caries pathogens were developed in a artificial mouth. Caries lesions similar to those found in vivo were produced on enamel and dentine blocks and in intact root tissues by these consortia more effectively than biofilms of the individual species. Fluoride supplied at 5 ppm suppressed enamel caries effectively, less so dentinal lesion formation, but much more so than F incorporated into the mineralised surface of enamel and roots. This is the first direct comparison of the effect on caries of environmental F and tooth mineral F induced by a plaque-like bacterial biofilm.

Actinomyces↗
PubMed1990

[Root caries--scanning electron microscopic observations].

Sound and carious root surfaces of 24 extracted human teeth with extensive periodontal attachment loss were examined by SEM. The microflora covering the radicular surfaces was a complex flora consisting of filamentous and fusiform bacteria, short and long rods. Cocci and coccoid bacteria were observed on root surfaces. Bacterial invasion in the exposed peripheral root dentin was delayed by sclerotic dentin.

Adult↗
PubMedDate not supplied

Root caries.

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Dental Caries Susceptibility↗
PubMed2004

Clinical criteria used to detect primary root caries with electrical and mechanical measurements in vitro.

PURPOSE: To relate the Electrical Caries Monitor (ECM) and Resilience Caries Monitor (RCM) readings with clinical criteria used to define primary root carious lesions (PRCLs) in vitro. METHODS: PRCLs were classified according to color, texture, hardness, cavitation, size and severity before ECM and RCM readings were recorded. RESULTS: There was a poor but significant correlation between the ECM and RCM phase readings (P < 0.05). ECM readings for color, all five classes of severity and all three classes of hardness of lesions were significantly different from each other and from sound root tissue (P < 0.05). There was a significant correlation for ECM readings and cavitation (P < 0.05). There was a clear logarithmic relationship between ECM end values and size (P < 0.05). RCM amplitude measurements for hardness and all five classes of severity were significantly different from each other and from sound root tissue (P < 0.05). However, the RCM readings failed to correlate with color, cavitation or size (P > 0.05). In conclusion, the relationship between ECM and RCM data and some clinical detection criteria for PRCLs is promising and warrants further investigation in vitro and in vivo. CLINICAL SIGNIFICANCE: The ECM is capable of distinguishing the severity of PRCLs since it is a less invasive but accurate method of detecting carious lesions when compared to tactile methods. The RCM was able to differentiate sound root dentine from soft lesions in vitro but this device is currently in a very early stage of development, and many mechanical and electronic problems must be solved prior to application of the device in clinical practice.

Analysis of Variance↗
PubMed1989

Root caries.

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Dental Caries↗
PubMed1996

Coronal caries, root fragments, and restoration and cusp fractures in US adults.

The Florida Dental Care Study is a longitudinal study of changes in oral health that included at baseline 873 subjects (Ss) who had at least 1 tooth, were 45 years or older, and participated for an interview and examination. Forty-five percent of Ss had active coronal caries; 94% of the coronal carious surfaces were primary decay, and only 6% were secondary/recurrent. Ten percent of Ss had 1 or more root fragments, 16% of Ss had 1 or more teeth with restoration fractures, and 14% of Ss had 1 or more teeth with cusp fractures. Blacks, poor persons, and irregular attenders had more caries, root fragments, and cusp fractures, even though they had significantly fewer teeth. Blacks, poor persons, and irregular attenders were not at increased risk for restoration fractures, probably because fractures were associated with dental care use. These findings regarding caries and restorative treatment needs are consistent with a substantial burden in adult high-risk groups, and are relevant for dental primary health care policy.

Aged↗
PubMed1998

Dissolution of cement, root caries, fracture, and retrofit of post and cores.

Fixed partial denture abutments severely damaged by dental caries or fracture present a challenge to the dentist. The fixed partial denture may need to be removed for endodontic treatment with post and core fabrication. Frequently, the existing fixed partial denture can be recycled as a provisional restoration. Retrofitting the post and core greatly improves the stabilization of the interim as well as the remake of the definitive fixed partial denture. This article describes a chair side procedure for retrofitting posts and cores and, at the same appointment, converting the original fixed partial denture to an effective provisional restoration.

Dental Abutments↗
PubMed1989

Basic study of fluoride-releasing adhesive resin for prevention of root caries: 2. Enhancement of acid resistance of the dentin.

The human root dentin was covered with a fluoride-releasing resin (F-resin) and incubated for various periods up to 180 days in phosphate buffer. After removal of the F-resin, resistance of the dentin to decalcification by acetic acid--sodium acetate buffer was assessed by measuring both the amount of calcium dissolved during decalcification and the knoop hardness of dentin after decalcification. The acid resistance progressively increased for 90 days when assessed by measurement of calcium dissolution and for 30 days by measurement of the knoop hardness. The percent inhibition of calcium dissolution achieved by 30 days of incubation was about 90% of the maximal inhibition obtained by incubation in concentrated sodium fluoride solution (2.4 x 10(-2) M). The enhancement of acid resistance was not induced by the resin infiltrated layer of the surface dentin but by the fluoride released from the F-resin into the dentin.

Acetates↗