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At least 1,225 records · Page 68Linked to original sources
PubMed1980

Metabolic activity of deciduous porcine dental pulp in different phases of root development.

The present investigation examined the activities of various enzymes associated with the carbohydrate metabolism in different phases of root development of swine deciduous dental pulps. The data showed that the potential carbohydrate metabolizing capacity of pulpal tissue was greatest in the root forming phase (two months). However, when compared with samples taken from the fully formed root (six months), a higher activity of glucose-6-phosphate dehydrogenase and lactate dehydrogenase was found in samples taken from the root resorption phase (nine months).

Animals↗
PubMed1999

The periodontal-endodontic interface.

The periodontal tissues and the pulp-dentine complex form an intimate continuum through which pathological changes of either one may lead to infection of the other, and whose management can be fraught with diagnostic and therapeutic difficulty. The purpose of this review paper is to explain the nature of that relationship and to provide pointers which may assist in the diagnostic process and thus enable appropriate management from the outset. Traditional classifications of lesions affecting the periodontal-endodontic complex have caused confusion by attempting to form diagnoses which indicate the putative primary source of infection. We would suggest that the origin of the infection is irrelevant to the management process, and that what is important is whether either, or indeed both, of the tissues are viable or not. Successful therapy will only result from the establishment of an accurate diagnosis, and forming such a diagnosis requires a methodical multi-staged approach.

Dental Pulp Diseases↗
PubMed2001

Hyper-IgE syndrome: a case report.

The hyper-IgE syndrome (HIES) is a rare disorder characterized by pruritic dermatitis, recurrent Staphylococcus skin abscesses and extremely elevated levels of IgE in serum. In this report, an eleven-year-old-boy with hyper-IgE syndrome is presented. He had a coarse facial appearance, pruritic dermatitis, recurrent skin abscesses, pulmonary infection, a reduced rate of resorption of the roots of primary teeth and an elevated serum IgE concentration. The colonization of Candida albicans, Kiebsiella pneumoniae, Escherichia coli and Staphylococcus aureus were found as; (1x10(2) CFU), (2.2x10(4) CFU), (2.2x10(4) CFU) and (2.6x10(3) CFU) per ml saliva, respectively. Also the pulp of a deciduous molar was investigated with light and transmission electron microscope (TEM). As conclusion, treatment for this condition is lifelong administration of therapeutic doses of a penicillinase-resistant penicillin, with the addition of other antibiotics or anti-fungal agents as required for specific infections.

Child↗
PubMed1999

Apical bridging in association with regular root formation following single-visit apexification: a case report.

A case report is presented in which continuing root formation occurred in a carious nonvital and immature mandibular second premolar after single-visit calcium hydroxide apexification treatment. An apical hard tissue barrier was formed, accompanied by a separate, mesioapically growing root, 7 months posttreatment. Treatment was concluded with gutta-percha root canal restoration. The success of this single-visit apexification treatment supports the contention that frequent changing of the calcium hydroxide dressing is not always required to induce apical closure.

Calcium Hydroxide↗
PubMed2002

Dens evaginatus--how does it present and how should it be managed?

Dens evaginatus is a developmental dental anomaly predominantly affecting premolars in people of Mongolian origin. It is likely to become more prevalent in New Zealand due to the increase in immigration of Asians. The formation of dens evaginatus is postulated to be an abnormal evagination of the internal enamel epithelium and dental papilla into the stellate reticulum during morphodifferentiation. An important complication resulting from damage to the evagination is periapical abscess. When considering treatment options, the long-term prognosis of the tooth, its root length, the general alignment of the teeth, and overall arch length should be reviewed. Management options include composite resin placed at the base of the tubercle, excision of the tubercle followed by direct or indirect calcium-hydroxide pulp capping and composite-resin restoration, and apexification procedures followed by conventional endodontic therapy. Grinding of the intact tubercles of newly erupted evaginated premolars may contribute to secondary infection of the pulp, and is not recommended.

Adolescent↗
PubMed2004

A comparison of retreatment decisions among general dental practitioners and endodontists.

This study compared the difference in decision making regarding retreatment of endodontically treated teeth by general dental practitioners and endodontists. Thirty radiographs of endodontically treated teeth taken from undergraduate records with their respective case descriptions were submitted to fifteen endodontists and fifteen general dental practitioners. Seven treatment alternatives were given as choices; reasons for retreatment, if chosen, were also requested and presented as choices. The results showed statistically different decisions among these two groups regarding retreatment cases. More endodontists opted for retreatment of cases, while higher percentages of general dentists decided to observe, not treat or extract. To prevent misdiagnosis and eventually mistreatment, endodontic decision making should be taught. Currently, there are no specific guidelines for management of failed root canal retreatment. It is suggested that guidelines generated by evidence-based dentistry may produce less variation in clinical decision making.

Adolescent↗
PubMed2005

A radiographic study of the prevalence of endodontically treated teeth and procedural errors of root canal filling.

The aim of this radiographic investigation was to study procedural errors encounterd in root canal treatment in a Jordanian population as evidenced using periapical radiographs A total of 2380 periapical radiographs including 3178 endodontically treated teeth were assessed in respect of the quality of endodontic treatment. The results indicated that the prevalence of endodontically treated teeth in the maxilla was higher than that in the mandible ( P < 0.001 ), the maxillary central incisors have the highest prevalence of endodontic treatment, and the maxillary second molars have the lowest prevalence of endodontic treatment. In respect of the quality of endodontic treatment, 30.2% of endodontically treated teeth exhibited an ideal length of root canal filling, 23.64% of the evaluated teeth were mummified, 37.45% of the teeth have short root canal fillings, 6.25% were overfilled, 1.35% were with preparations which deviated from the line of the root canal and 1.10% of the evaluated teeth have perforations of the root walls or the floor of the pulp chamber. It is concluded that the Maxillary teeth were found to be endodontically treated more frequently than the mandibular teeth, anterior teeth were found to be endodontically treated more than premolar and molar teeth, maxillary central incisors have the highest prevalence of endodontic treatment whilst the maxillary second molars have the lowest prevalence. The quality of endodontic treatment was disappointing. Therefore, emphasis on continuing education and post graduate courses in endodontics must be a priority in Jordan.

Bicuspid↗
PubMed2006

Avoiding perforations in endodontics.

PRECIS: While it will be impossible to eliminate all iatrogenic errors in endodontics, by focusing on key areas during the endodontic process, we can reduce the potential for problems for ourselves and our patients.

Bicuspid↗
PubMed1977

Endodontic therapy of traumatised teeth in children.

One of the most difficult problems met with in endodontic therapy for children is the traumatized anterior tooth whose root is still incomplete. In cases where the pulp is vital, treatment by pulp capping or pulpotomy is directed to preserving the vitality of the radicular pulp to ensure completion of root formation. Calcium hydroxide remains the material of choice in both forms of treatment. Once root formation is complete, removal of the pulp residue and filling of the root canal may be performed as a preliminary to restoration by means of a post retained crown. Where the pulp is non vital, attempts to fill the funnel shaped apical part of the canal, whether from a coronal approach or by open operation for retrograde filling, have proved unsatisfactory. Many workers have shown however that a number of root filling materials and root dressings are capable of inducing either continued root growth or a closure of the apical region by a calcific scar. A detailed survey of 34 teeth treated by this method has been made and the important principles which appear to influence the success of the technique are enumerated.

Child↗
PubMed1985

Glycogen content and phosphorylase activities in deciduous dental pulp. Study on porcine teeth during root formation, fully formed root and root resorption phases.

Glycogen content and glycogen phosphorylases (a and total) were measured in dental pulps from pigs sacrificed at 20, 40, 50, 70, 90, 120, 180, 270 and 300 days of age. The following conclusions were drawn: (a) pulp glycogen content was higher during root formation than during root resorption; (b) the phosphorylase activities (a and total), were higher during root resorption than in the other phases; (c) pulps from different teeth, when in the same developmental stage, possessed a similar glycogen metabolism, as revealed by glycogen content and enzyme activity determinations.

Aging↗