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At least 1,495 records · Page 83Linked to original sources
PubMed1995

Conservative endodontic-restorative treatment for a severely damaged and periapically compromised molar: a case report.

Many teeth with apical involvement show apical external resorption, and become difficult to treat. A patient with a severely damaged, periapically compromised permanent molar was treated successfully with a combination of simple root canal therapy and a conventional amalgam restoration. This method offers an inexpensive and predictable alternative and provides the option for a different restorative approach in the future.

Adult↗
PubMedDate not supplied

New subgingival restorative procedures with Geristore resin ionomer.

In an ongoing search for new and improved dental materials, researchers have developed restorative products which are improved versions of traditional formulations. This has been especially true in the area of glass ionomers. One such modification has been the development of a material, termed resin ionomer. This material is less technique sensitive and exhibits low oral solubility; it may be light activated and finished at the time of placement. This article presents the clinical application of such a material with emphasis on its use in subgingival and periodontal applications.

Composite Resins↗
PubMedDate not supplied

Glass ionomer restoratives.

This article gives an overview of the new hybrid (light-cured) glass ionomers, which are a combination of auto-cured glass ionomer and light-cured composite resin. The characteristics of these materials and the different brands available are discussed. A clinical technique for restoration of cervical lesions with these materials is presented.

Acrylic Resins↗
PubMed1993

Marginal sealing ability of four restorative materials placed in root surfaces.

The sealing ability of four restorative materials, placed in root surface cavities, was assessed by a range of standard in vitro microleakage tests. The rank order of the severity of microleakage associated with the four materials varied with the different tests. Although differences between the performance of unlined amalgam, two different dentine-bonded composites and a glass-ionomer restorative material were detected, most were not statistically significant. None of the materials tested completely eliminated microleakage and so even those materials reported to be adhesive to dentine cannot be considered ideal in the restoration of root surface cavities.

Composite Resins↗
PubMed1995

Generalized idiopathic apical root resorption as an incidental finding in an adolescent: a case history.

Generalized idiopathic apical root resorption is an unusual finding, especially in adolescents. This report describes a case in which the root resorption was an incidental finding in a patient referred for orthodontic treatment after suffering trauma to a central incisor. It emphasizes the need for adequate clinical and radiological examination before undertaking active orthodontic treatment.

Adolescent↗
PubMed1996

Intra-alveolar transplantation. I. A 10-year follow-up of a method for surgical extrusion of root fractured teeth.

A group of 19 patients where traumatic root fractures were treated with surgical extrusion procedure has been clinically and radiographically followed up for 10 years. Except for one out of 21 intraalveolar transplanted roots all functioned with different kinds of crown restorations and without pathological complications. The surgical extrusion method should thus be a useful tool in the treatment of teeth with cervical root-fractures and also teeth with deep cervical root caries which are difficult to treat conservatively.

Adult↗
PubMed1997

Histologic evaluation of soft tissue attachment to CO2 laser-treated root surfaces: an in vivo study.

There is little support in the dental literature to justify the use of lasers for periodontal root therapy. To the contrary, there are several in vitro studies suggesting potentially adverse effects when lasers are applied to root surfaces. The purpose of this study was to evaluate, in vivo, soft tissue attachment to root surfaces following CO2 laser irradiation. Using a four-quadrant design with one quadrant serving as an untreated control, the remaining quadrants in each of two dogs were treated by (1) scaling and root planing, (2) laser only, and (3) laser followed by scaling and root planing. Prior to the assigned treatments, the roots of three teeth in each quadrant (including the control) were exposed by flap reflection and ostectomy. After root therapy the flaps were repositioned and allowed to heal for 28 days. Clinical attachment levels were determined prior to surgery, at 28 days, and by histologic measurement. Results indicate that specimens treated with laser only lost attachment compared to controls and other treatment groups. Furthermore, there was no histologic evidence of soft tissue attachment to a laser-treated surface that featured a residual char layer.

Animals↗
PubMed1996

Idiopathic dental root replacement resorption in old dogs.

The roots of the teeth of 33 large dogs aged 10 years or older were radiographed. These dogs were euthanized for reasons other than oral diseases; dogs with obvious dental or periodontal diseases were excluded. The dogs had shown no clinical signs related to the teeth and the teeth were macroscopically normal. Of the 33 dogs, six had one or more teeth that had abnormally shaped and partially resorbed roots, with replacement of root structure by radiographically normal trabecular bone. Histological examination of radiographically abnormal roots revealed mid-root resorption, without signs of inflammation or hypercementosis. These findings are similar to the condition known as idiopathic dental root replacement resorption in the human dental literature. Possible etiologies of root resorption are discussed.

Animals↗
PubMed1997

Root coverage of large localized gingival recession: a biometric study.

With the objective of obtaining root coverage in areas of large localized gingival recessions, 16 cases of localized gingival recessions varying from 3.5 to 10 mm (total recession) were treated with a coronally positioned gingival autograft in conjunction with mechanical (root planing) and chemical (saturated citric acid) treatment of the exposed root surfaces. Changes in sulcus depth, percentage of root coverage, and gain in attached gingiva were observed over the course of a 6-month period. The results showed no significant change in sulcus depth, coverage of 72.17% of the exposed root surfaces, and a gain of 3.0 +/- 1.4 mm in attached gingiva in areas where little or no attached gingiva had existed prior to treatment. A positive correlation between the bone level and total visible recession before treatment was also demonstrated. We conclude that the coronally positioned gingival autograft is a highly predictable surgical technique for the treatment of large localized gingival recessions.

Adult↗
PubMed1998

The diagnosis and treatment of molar furcation invasions.

Multirooted teeth with FI present some of the biggest challenges in periodontal therapy despite a large arsenal of therapeutic techniques. Guided tissue regeneration has improved the long-term prognosis of many deep grade II lesions but has not always shown consistent predictability. With improved barrier techniques and the development of effective growth factors, however, guided tissue regeneration may well become the treatment of choice for all grade II and III FI. Until that time, early diagnosis and treatment are critical to long-term success. Even strategically important teeth with more advanced FI often have a much better long-term prognosis than previously believed and can survive for many years, even with closed scaling and root planning and frequent, long-term maintenance. Before condemning molars with severe FI, clinicians should consider their experience in treating advanced periodontal diseases and seek consultation with a specialist when in doubt as to the prognosis and treatment of teeth with significant FI.

Dental Scaling↗
PubMed1995

"Collagen adhesion" revisited.

Histologic studies of periodontal reconstructive therapies have repeatedly shown a zone of nondescript connective tissue adaptation, or collagen adhesion, to the root surface between the apical extension of the junctional epithelium and the coronal extension of identifiable regenerated cementum. To clarify the nature of this zone, supra-alveolar periodontal defects were created bilaterally in the mandibular premolar region in three beagle dogs, and exposed roots were instrumented to remove the cementum. Flaps were then coronally advanced and sutured. Histologic analysis after 12 weeks of healing showed instrumented root dentin not associated with junctional epithelium, new cementum, root resorption, or ankylosis in 27 of 60 root surfaces. In 10 of these specimens subsequently examined by transmission electron microscopy, collagen fibrils were generally oriented parallel to and in close proximity to the root. A mechanism of collagen attachment was, in fact, functioning at sites of collagen adhesion; these areas may validly be included in the histologic attachment level reported in studies of periodontal reconstructive therapy.

Animals↗
PubMedDate not supplied

The use of resin-ionomer in restorative procedures.

As the average age of the population increases, we are seeing a significant rise in root caries and in the need for restorative procedures associated more often with an older population. This paper describes the subgingival placement of a resin-ionomer for several restorative procedures, including root caries, resorption, endodontic perforation and root fracture. After endodontic therapy, full thickness flaps may be used to gain access to the lesion or root defect. The defects may be prepared with ultrasonic instruments and the preparations treated with a dentin conditioner. The preparations are then washed and lightly air-dried and treated with a dentin bonding agent. A resin-ionomer may then be syringed into the preparations and either light-activated or allowed to undergo a chemical set. No untoward effect has been observed during the time frame of this project. The cases presented indicate that a resin-ionomer may be used as a subgingival restorative and may be placed in lesions originally thought to be unrestorable. Thus, teeth may be saved that were previously designated for extraction.

Dental Restoration, Permanent↗
PubMed1998

Subattachment inflammatory root resorption: treatment strategies.

Attempts have been made to classify root resorption according to its etiology in order to develop more efficient strategies for its treatment. This condition has been identified as resulting from damage to the protective attachment layer (predentin or precementum) of the root combined with inflammation adjacent to the root surface. This article demonstrates a series of treatment strategies focused on the reversal of each manifestation of subattachment root resorption, specifically emphasizing defects that extend apically and localized defects.

Humans↗
PubMed2004

Root resorption: the possible role of extracellular matrix proteins.

During maxillary permanent canine eruption, the deciduous canine root is selectively resorbed while the adjacent permanent lateral incisor root is left intact. An understanding of this selective resorption could provide insights into the cause of moderate to severe iatrogenic root resorption during orthodontic tooth movement. This study investigated the possible role of extracellular matrix (ECM) proteins in the selective resorption process. The spatial expression patterns of 2 ECM proteins, osteopontin (OPN) and bone sialoprotein (BSP), were assessed within the periodontal ligament (PDL) surrounding root surface areas of deciduous and permanent teeth. Intact and resorbed root surface areas from 14 deciduous roots and intact root surface areas from 12 permanent tooth roots were examined. In the deciduous roots, BSP and OPN were locally expressed in the cell layer adjacent to the root surface and most intensely concentrated in areas surrounding and within odontoclasts proximal to the resorptive lacunae. In contrast, BSP and OPN were expressed in a generalized pattern throughout the PDL of permanent roots. These preliminary findings suggest a differential expression of ECM proteins on deciduous versus permanent tooth roots, which could act as a signal for selective odontoclast adhesion to, and subsequent resorption of, deciduous root surfaces.

Extracellular Matrix Proteins↗