Search PubMed⌕ Search

SEARCH · Search PubMed

Results for “Root Caries”

Search indexed PubMed citations on genomics, clinical trials, systematic reviews and public health. Explore titles, authors and supplied subject terms, then open the PubMed record.

Quote a phrase for an exact phrase match. Source license links do not imply unrestricted reuse.

At least 1,153 records · Page 64Linked to original sources
PubMed1990

[Contribution to the treatment of children in the first aid medical service of the stomatological department].

At the first aid medical service of the stomatological department of a type II hospital with policlinic in the course of the calendar year a total of 1,761 children from 2-15 years were treated. During this period the staff treater 1,718 teeth and 43 times they treater soft tissues of the oral cavity. Most frequently periodontitis of the decidual teeth was treated, resorption of the root of a decidual tooth, pulpitis and caries. As to therapy, extractions were most frequent, followed by trepanation of the pulp cavity and treatment of the tooth by a provisional filling. The author draws attention to unsuitable therapeutic procedures such as trepanation of the pulp cavity in case of periodonititis of a decidual tooth and application of cobalt in pulpitis of a decidual tooth after the age of seven years. She emphasizes also the necessity to use local anaesthesia in extraction of decidual teeth.

Adolescent↗
PubMed2004

Tooth-specific risk indicators for apical periodontitis.

The present study aimed at identifying tooth-specific risk indicators for apical periodontitis (AP) and to investigate their interrelations in order to identify those teeth that would benefit from a radiographic examination. The study included 311 males and 302 females who gave written informed consent and attended a full-mouth radiographic examination. All teeth were assessed individually. AP was scored by the periapical index (PAI); other variables were root fillings, coronal fillings and crowns, pulpal posts, and caries. A conditional logistic regression analysis was used to assess the effect of tooth-specific risk indicators on the presence of apical periodontitis. The dependent variable was presence of AP versus absence of AP in the tooth. A total of 536 teeth with AP were identified. A highly increased risk for AP was seen in teeth with root fillings, particularly for technically inadequate ones. Presence of coronal fillings also increased the risk for AP, and inadequate fillings were associated with a slightly higher risk than adequate fillings. A similar pattern was seen for crowns. Teeth with caries also had an increased risk of AP, but the difference was only statistically significant for primary caries. Compared to first incisors, second incisors and canines had a significantly reduced risk, and molars, especially first maxillary molars, had a significantly increased risk for having AP.

Adult↗
PubMed1995

Endodontic therapy and management of grade II furcation periodontal disease in a mandibular first molar tooth of a dog.

Conventional endodontic therapy, necessitated by the development of a carious lesion coronal to the furcation area of a mandibular first molar tooth, and management by gingivoplasty of a resultant Grade II furcation lesion are described. In addition, the significance of radiographic changes associated with the periapical region of an undercondensed mesial root is addressed.

Animals↗
PubMedDate not supplied

[The use of odontograms and panoramic roentgenography in personal identification].

Study of dental root surfaces prompted the authors to add to the routine odontogram 28 more maxillary surfaces and 22 mandibular surfaces, this making a total of 210 diagnostic signs. Employment of amplified panoramic roentgenography permitted the authors to detect specific features of the dental cavity, root canals, periodontal fissure structure, the presence of caries and its complications, inflammatory and systemic involvement, injury to the jaws and teeth. Visual examination of dental status and application of panoramic roentgenography will help improve forensic medical personal identification.

Adult↗
PubMed1996

Pathoses associated with mandibular third molars subjected to removal.

OBJECTIVES: To measure the prevalence of disease of mandibular third molars referred for removal and to estimate the risk for development of pathoses for two cues. STUDY DESIGN: A prospective cohort study on molars subjected to removal was performed. The prevalence of different diseases and the patient's age, angular position, and degree of impaction of the molars were registered. Odds ratio for molars with different positions and impaction states were estimated. RESULTS: Pericoronitis was found in 64% of cases, caries in the third molar in 31%, periodontitis in association with 8%, caries in the second molar in 5%, and root resorption of the second molar with 1% of the molars with pathoses. Odds ratio was highest for distoangular molars (5.8) and for molars partially covered by soft tissue (6.7). CONCLUSIONS: The odds ratio is about 22 and 34 times higher for molars partially covered by soft tissue than for molars completely covered by soft or bone tissue. For distoangular molars the odds ratio is 5 to 12 times higher than for molars in other positions.

Adolescent↗
PubMed1992

Excimer lasers in dentistry: future possibilities with advanced technology.

The thermal side effects of carbon dioxide and neodymium:yttrium-aluminum-garnet lasers limit their clinical applications. These high-powered, infrared lasers result in zones of charring and carbonization even in soft tissues and the bone. In contrast, the pulsed, ultraviolet radiation emitted by excimer lasers causes limited thermal, denaturative damage to surrounding tissues. Therefore, treatment of dental tissues with the nonthermal process of photoablation with excimer lasers may present alternatives to traditional dental practice. Possible future applications of the excimer laser include selective caries removal, the conditioning of tooth surfaces, and cleaning of root surfaces; the zones of necrosis are small, so that there is no residual debris.

Dental Caries↗
PubMed1998

Apical limit of root canal instrumentation and obturation, part 1. Literature review.

One of the major controversies in root canal therapy concerns the apical limit of instrumentation and obturation. The results of longitudinal prognostic studies, basic anatomical knowledge of the apical third of the root canal, and the histological pulp reaction to caries progression demonstrated the presence of a vital apical pulp remnant, even in the presence of a periapical lesion. Finally necrosis and bacteria establish themselves in the periapical lesion. All valid prognosis studies confirm the practice of staying short of the apex with a homogeneous obturation to obtain the highest success rate of 90-94% (when done by or under supervision of specialists; results in the general population had a failure rate greater than 50%). The location of the apical foramen(ina) related to root canal treatment most frequently ends short of the apex, often by several millimetres.

Dental Pulp↗
PubMed1981

[Invaginated dental elements--II. Diagnosis and therapy].

A detailed inspection of the inner tooth morphology on röntgenogram is necessary as the surface morphology generally does not reveal the existence of an invagination. The irreversible pathological evolution occurring when diagnosis is neglected, should incite the practitioner to look for invaginations on every set of röntgenograms. Five therapeutic techniques are described. If an appropriate endodontic technique is applied, a successful root canal filling can be achieved.

Dens in Dente↗
PubMed1979

Experimental secondary caries around amalgam, composite and glass ionomer cement fillings in human teeth.

It was the aim of this in vitro study to examine secondary caries occurring in enamel and dentin adjacent to different filling materials and after different filling methods. The materials used were: amalgam, composite and glass ionomer cement. The highest rate of secondary caries was found on the crown surface as well as root surface of teeth which were conventionally treated with amalgam and composite materials. The preliminary treatment with a copal-ether varnish (Copalite) was of insignificant value. Fluoridation of the cavity walls with a fluoride solution (Elmex-Fluid) resulted a significant cariostatic effect with amalgam- or composite fillings in enamel and in root surfaces. Zones of inhibition of demineralization could be found. The addition of 5% NaF to composite material also produced an inhibition of demineralization, manifesting itself in a reduction of the secondary caries rate and increased percentage of tight margins of the fillings. Although glass ionomer cement has adherent properties to enamel and dentin, a larger percentage of filling-margins, especially of those applied to dentin, were found to be untight. Nevertheless, the demineralizations were not very pronounced and significant zones of inhibition of demineralization were found in the cavity walls and tooth surfaces adjacent to the fillings. The amounts of fluoride released by silicate cement, glass ionomer cement and composites containing 5% NaF were compared. The glass ionomer cement showed higher values than the composite and silicate materials. After 10 days of storage in water, the dosis of fluoride released--by all materials--was 7-20 times less than on the first day.

Acrylic Resins↗
PubMed1988

Ultrastructural observations on bacterial invasion in cementum and radicular dentin of periodontally diseased human teeth.

In this study the bacterial invasion in root cementum and radicular dentin of periodontally diseased, caries-free human teeth was examined. In addition, structural changes in these tissues, which could be related to the bacterial invasion, were reported. Twenty-one caries-free human teeth with extensive periodontal attachment loss were studied by light and scanning electron microscopy. At the base of the gingival pocket, bacteria were found in the spaces between remnants of Sharpey's fibers and their point of insertion in the cementum. In teeth that had been scaled and root planed, most of the root cementum had been removed. Bacterial invasion was found in the remaining root cementum. The invasion seemed to start as a localized process, often involving only one bacterium. In other areas bacteria were present in lacunar defects in the cementum. These lacunae extended into the radicular dentin. In 11 teeth bacteria had invaded the dentinal tubules. Most bacteria were located in the outer 300 microns of the dentinal tubules, although occasionally they were found in deeper parts. In two of the nontreated teeth, bacteria were detected on the pulpal wall. No correlation was found between the presence of bacterial invasion and the absence of radicular cementum. No bacteria were found in the portion of the root located apically to the epithelial attachment. These data are in agreement with our results from cultural studies of the bacterial flora in these structures. It was also demonstrated that in spite of meticulous scaling and root planning and personal oral hygiene, bacterial plaque remained present on radicular surfaces. Both the invaded dentinal tubules and the lacunae could act as bacterial reservoirs from which recolonization of treated root surfaces occurs. From these reservoirs bacteria could also induce pulpal pathoses. Since these bacterial reservoirs are not eliminated by conventional mechanical periodontal treatment, it seems appropriate to combine mechanical periodontal therapy with the use of chemotherapeutic agents.

Bacteria↗
PubMed1991

[Treatment of subgingival crown root fracture: forced eruption--case report].

The conventional treatment methods for a subgingival crown root fracture are (1) extract the residual root and restore with a fixed bridge; (2) crown restoration with a deep subgingival margin; and (3) exposure of the fracture line by a crown lengthening operation and restoration with a crown. However, these methods require reduction of either the tooth structure or the periodontal support. Improvements in endodontic and orthodontic therapy followed Heithersay in 1973 to combine the use of endodontic and orthodontic therapy to manage subgingival crown root fractures--the so-called forced eruption method. This method can save the tooth structure and periodontal tissue. We can now use this method with different appliances to treat subgingival fractures, subgingival caries, subgingival perforations, infrabony pockets, etc. In this report, we present three cases using forced eruption to manage a subgingival fracture and subgingival caries and in the follow-up examination after crown restoration.

Crown Lengthening↗
PubMed1992

Root canal configuration of the mandibular first premolar.

One hundred six human mandibular left and right first premolars, previously extracted due to nonrestorable caries, periodontal disease, or orthodontic reasons, were sectioned perpendicular to the long axis of the root starting at the cementoenamel junction. Three-millimeter sections were made with an ultrathin separating disc to the level of the anatomical apex. After 1 day in 5.25% NaOCl, each section was rinsed in phosphate-buffered saline, evaluated with a stereomicroscope, and photographed. The slides were projected and the shape of the canal, incidence of multiple canals, level of bifurcation, and any other variant anatomy were recorded. Seventy-six percent of the premolars demonstrated Type I canals and 24% contained Type IV. The shape of the canals was predominantly oval or round. An interesting finding was the number of C-shaped canals which were associated predominantly with Type IV canal systems. This occurred in 14% of the roots.

Bicuspid↗