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PubMedDate not supplied

Considerations for the aesthetic restoration of endodontically treated anterior teeth following intracoronal bleaching.

The major considerations in restoring the pulp chamber following bleaching of endodontically treated anterior teeth include aesthetics, function, appropriate endodontic access preparation, amount of remaining tooth structure, type of restorative material, prevention of microleakage, and prevention of iatrogenic perforation. The learning objective of this article is to review the considerations that must be made when placing aesthetic restorations in the pulp chamber and access opening of endodontically treated teeth following intracoronal bleaching. The advantages and disadvantages of the proposed techniques and materials are discussed, as are the methods for avoiding excessive removal of the tooth structure. Two case reports are used to demonstrate the clinical procedures. The authors suggest placing white gutta-percha stopping material in the pulp chamber and a composite restoration in the access opening following root canal treatment and/or bleaching procedures in the anterior dentition.

Adolescent↗
PubMed1997

Prevalence of congenital dental anomalies of the deciduous dentition in Japanese children.

We examined the prevalence of anomalies in deciduous dentition in 2,733 Japanese three-year-old children. The results showed that fused teeth occurs in 4.10%, congenital missing teeth in 2.38%, enamel hypoplasia in 1.50%, peg-shaped teeth in 0.55%, palatal cusps in upper deciduous incisors in 0.37%, supernumerary teeth in 0.07%, and color anomalies in 0.07%. Sixty-nine boys and 43 girls had fused teeth, percentages of 4.88 and 3.26, respectively. This difference was significant. All the fused teeth were located in the anterior region and were more frequent in the mandibular than in the maxillary arch. In the mandibular arch, 50 cases involved the lateral incisor and canine; the central incisor and lateral incisor were fused in 48 instances. There were 30 boys (2.12%) and 35 girls (2.65%) with congenitally missing deciduous teeth. This difference was not significant. Unilateral missing teeth were more frequently observed than bilateral missing ones. The lower lateral deciduous incisor was the most frequently missing tooth. The prevalences of fused teeth and congenital missing teeth were significantly higher in this study than in studies of American and Scandinavian children. These two anomalies are tending to increase in frequency in Japan.

Anodontia↗
PubMed1997

The esthetics of anterior tooth aging.

As generations proceed to reinvent themselves in an effort to achieve and maintain youth, cosmetic dentistry faces one of its greatest and most persistent challenges: the restoration of an aging smile. Although the need for this restorative therapy has not yet been adequately studied, the momentum continues to build as aging teeth exhibit physical characteristics that affect their function as well as appearance. This review presents the most common factors influencing the esthetics of anterior tooth aging: coloration; wear and the effects of erosion, attrition, abrasion, and abfraction; and position of teeth relative to each other and surrounding tissues. While dental science seeks to understand how well age-specific restorative procedures can affect patients, the question of the necessity of this therapy remains. Should a healthy smile require treatment? Only time will reveal at what cost and to what extent a younger appearance plays a role in dental science.

Adult↗
PubMed1998

Two-year performance of glass-ceramic insert-resin composite restorations: clinical and scanning electron microscopic evaluation.

OBJECTIVE: This study evaluated the 2-year clinical performance of beta-quartz-resin composite restorations. METHOD AND MATERIALS: Twenty-two glass insert-resin composite restorations were placed. Restorations were placed in 6 molars, 12 premolars, and 4 incisors. After 2 years, clinical assessment of the restorations was made by three operators according to the US Public Health Service criteria. Scanning electron microscopic evaluations were made by replica technique. RESULTS: Nineteen restorations were graded Alfa and three restorations were graded Bravo for color match. Twenty-one restorations were graded Alfa and one restoration Charlie for proximal contact, marginal integrity, and anatomic form. None of the restorations showed marginal discoloration, tooth sensitivity, or caries. CONCLUSION: Glass-ceramic insert-resin composite restorations exhibited excellent performance after 2 years of clinical service.

Ceramics↗
PubMed1998

Laser tooth whitening.

Cosmetic and adhesive dentistry has not only increased patients' self-esteem and confidence, it has increased their awareness of the value of healthy teeth and gums. White teeth have always been a high priority with patients. Creating and maintaining white teeth, however, has not always been easily achieved. The recent development of laser-assisted tooth whitening procedures makes it easier, faster, non-invasive, and affordable for patients to have whiter teeth.

Attitude to Health↗
PubMed1999

Clinical, radiologic, and histopathologic features of invasive cervical resorption.

Invasive cervical resorption is a relatively uncommon form of external root resorption. There may be no external signs, and the resorptive condition is often detected by routine radiographic examination. Where the lesion is visible, the clinical features vary from a small defect at the gingival margin to a pink coronal discoloration of the tooth crown resulting in ultimate cavitation of the overlying enamel. The condition is usually painless unless pulpal or periodontal infection supervenes. Radiographic features of lesions vary from well-delineated to irregularly bordered mottled radiolucencies, and these can be confused with dental caries. A characteristic radiopaque line generally separates the image of the lesion from that of the root canal, because the pulp remains protected by a thin layer of predentin until late in the process. Histopathologically, the lesions contain fibrovascular tissue with resorbing classic cells adjacent to the dentin surface. More advanced lesions display fibro-osseous characteristics with deposition of ectopic bonelike calcifications both within the resorbing tissue and directly on the dentin surface. Secondary invasion of microorganisms into the pulp or periodontal ligament space will elicit a normal inflammatory response.

Adolescent↗
PubMed2005

Results after replantation of avulsed permanent teeth. I. Endodontic considerations.

Following avulsion and replantation, teeth are at risk for infection and infection related resorption (IRR). Severe discolorations of tooth crowns and cervical root fractures are common. This study presents data on endodontic related complications of avulsed teeth replanted following an extraoral endodontic treatment. Periodontal aspects will be discussed in the second part of the present publication. Twenty-eight permanent teeth in 24 patients aged seven to 17 years were replanted after avulsion. All teeth could be evaluated. In all teeth extraoral endodontic treatment by retrograde insertion of ceramic or titanium posts was performed. Mean observation period was 31.2 months (median: 24.1 months). Nine teeth healed with a functional periodontal ligament (PDL) (functional healing, FH), 19 teeth exhibited replacement resorption (RR), which was succeeded by IRR in three teeth after observation periods of more than 14 months. Diagnosis was set to tunneling resorption (one case) and to cervical resorption preceded by complete RR (two cases). No early IRR was observed. All six teeth rescued in physiologic conditions (cell culture medium of tooth rescue box) exhibited FH. Discolorations of tooth crowns or other complications (cervical root fractures, fractures of posts) were not observed. No differences in the healing results of immature and mature teeth were observed which is in contrast to previous studies. This finding is explained with the different endodontic treatment protocols. Extraoral endodontic treatment by retrograde insertion of posts prevents early IRR and minimizes the overall incidence of IRR. The method does not negatively influence periodontal healing. As there are further advantages (no discoloration, no root fractures, patient not involved, less radiographs, less time consumption, less costs) the method is recommended in isolated teeth before replantation. Especially immature teeth profit from the prevention of complications.

Adolescent↗
PubMed1965

TETRACYCLINE TEETH.

Explore the source record for details and available documents.

Anti-Bacterial Agents↗
PubMed1996

[Veterinary dentistry (12). Discoloration of teeth in companion animals].

Tooth discolouration is frequently seen in companion animal practice. Knowledge of the composition and development of the dental tissues involved in such discolouration and identification of the cause of the discolouration and the consequences for the dentition are essential to provide adequate treatment for the problem. This article provides a practical classification of tooth discolouration in companion animals and discusses the most common discolourations.

Animals↗
PubMed2001

An unusual staining of the tooth roots: a case report with histological and micro-analytical studies.

The discoloration of tooth roots is rare. We report here a 22-year-old Japanese woman with blackish-brown staining of the roots of the upper and lower third molars. Staining was found in the dentin and cementum. Electron probe X-ray microanalysis showed no significant difference in the composing elements between the stained tooth root and control tooth. Fluorescent bands coincided with staining in the dentin of the root and cementum along the incremental lines under confocal laser-scanning microscope.

Adult↗
PubMed1994

Bleaching of discolored teeth.

Bleaching is a viable treatment alternative to attempt esthetic improvement of discolored teeth. Natural tooth structure as opposed to a veneer or crown margin is considerably superior in tissue response. Caution has to be exercised in selecting cases and advising patients of the possibilities from bleaching and that bleaching may not be entirely successful or lasting. It still should be considered as a treatment of first choice. If applied properly and in carefully selected cases the results can be very rewarding for the dentist and especially the patient. A knowledge of the agents used and biological limits must be kept in mind when bleaching teeth to prevent potential disastrous complications. It is especially important to keep the bleaching time to the shortest effective time possible with vital pulps. Bleaching when successful provides a superior margin and a less expensive alternative than crowns. Bleaching should generally be considered before crown preparation because if bleaching is unsuccessful crowns can always be fabricated. This is true for younger individuals with tetracycline stained teeth because crowns may need to be remade several years after their initial placement due to further eruption of teeth and further recession of the gingival tissues.

Adolescent↗
PubMed1984

A follow-up study of screwpost-retained amalgam crowns.

A follow-up study of amalgam crowns retained with brass screwposts (Dentatus) has been performed. The teeth had been restored by undergraduates at the Department of Cariology, School of Dentistry, Stockholm, during the years 1970-1976. Radiographs of the teeth made at the time of insertion of posts were available in all cases. The material comprised 56 teeth with altogether 69 screwposts. Average observation time was 7.8 years. Anamnestic data were collected and clinical and radiographic investigations of the restored teeth and surrounding tissues were carried out. Of the 56 teeth, 8 teeth containing altogether 11 screwposts had been lost by extraction. Annotations from the treating dentists were available in all cases and showed that five of the extractions had been necessary because of extensive caries, one because of parodontitis and two because of root fractures. No corrosion of screwposts had been observed in the fractured teeth. The anamnestic investigation revealed sporadic tenderness and metallic taste in only a few cases. The most frequent clinical findings were discoloration and pitting of amalgam surfaces and discoloration of tooth substance and gingiva. The discolorations of the gingiva were related to restorations extending below the gingival margin. No clinical or radiographic signs of corrosion of screwposts were found in the investigated teeth.

Crowns↗