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Results for “DENTAL PULP CAPPING”

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PubMed1981

Capping of monkey pulps with Dycal and a Ca-eugenol cement.

Capping of 120 teeth in four monkeys was performed with Dycal or with a calcium-eugenol cement. The observation periods were 8 days or 90 days. The monkeys were killed, and the teeth were examined histologically. After 8 days, the pulp-tissue reactions were basically the same in the two groups. The tissue adjacent to the exposure site was characterized by varying amounts of necrotic tissue, inflammatory cells, and extravasated erythrocytes. Capping material and dentin chips were displaced into the pulp tissue. Particles from the capping materials were found in vessels, macrophages, and foreign body cells. After 90 days, more hard-tissue formation occurred in the Dycal group than in the Ca-eugenol cement group. The hard tissue was formed by either fibroblasts or the original odontoblasts.

Animals↗

PubMedDate not supplied

The future role of a molecular approach to pulp-dentinal regeneration.

The ultimate goal of a regenerative pulp treatment strategy is to reconstitute normal tissue continuum at the pulp-dentin border, regulating tissue-specific processes of tertiary dentinogenesis. Experimental investigations in mature teeth have shown that a network of extracellular matrix molecules and growth factors signal tertiary dentinogenesis. Application of dentin matrix components or growth factors in deep dentinal cavities stimulated up-regulation of biosynthetic activity of primary odontoblasts (reactionary dentin formation). Pulp-capping studies with a broad spectrum of biological agents, including growth factors and extracellular matrix molecules, showed formation of osteodentin and/or tertiary dentinogenesis (reparative dentin formation). Promising biologically active substances should be subjected to careful evaluation in well-designed preclinical investigations as well as in long-term clinical trials before their introduction in clinical practice.

Animals↗

PubMed2005

Mineral trioxide aggregate as a pulpotomy agent in primary molars: an in vivo study.

The retention of pulpally involved deciduous tooth in a healthy state until the time of normal exfoliation remains to be one of the challenges for Pedodontists. A scientific noise has been generated about several materials some of which have been popular pulpotomy medicaments. Concerns have been raised about the toxicity and potential carcinogenicity of these materials, and alternatives have been proposed to maintain the partial pulp vitality, however to date no material has been accepted as an ideal pulpotomy agent. Mineral trioxide aggregate (MTA) is a biocompatible material which provides a biological seal. MTA has been proposed as a potential medicament for various pulpal procedures like pulp capping with reversible pulpitis, apexification, repair of root perforations, etc. Hence the present study was done to evaluate the efficacy of MTA as a pulpotomy medicament. A clinical and radiographic evaluation was done on children where MTA was used as pulpotomy medicament in primary molars for a period of 6 months and it was found to be a successful material.

Aluminum Compounds↗

PubMed2000

Direct pulp capping with a dentin adhesive resin system in children's permanent teeth after traumatic injuries: case reports.

Traumatic injuries in the permanent teeth of children and adolescents are one of the most frequent causes of dental treatment. The article presents the use of an enamel and dentin adhesive resin system, Syntac, and resin composite materials, Tetric and Variolink, as materials of choice for direct pulp capping after traumatic pulpal exposure (Ellis Class III). Exposed pulp in 10 patients was covered with Syntac and then Tetric and Variolink after etching of dental tissues with phosphoric acid. The follow-up period was from 12 to 48 months. In 1 patient, the treatment was a failure. In the remaining 9 patients, no signs or symptoms of pulpal inflammation or necrosis were observed during the clinical examination.

Acid Etching, Dental↗

PubMed1996

Influence of particle size of hydroxyapatite as a capping agent on cell proliferation of cultured fibroblasts.

The influence of particle size of biomaterials on cell reaction and cell proliferation was studied by means of coculturing fibroblasts with calcium phosphate ceramics. Both dense and porous hydroxyapatite ceramics obtained under different sintering conditions were selected, and two particle sizes of 300 and 40 micrometers were used to examine cell reaction. The four materials were each cocultured with dental pulp-derived fibroblasts for 7 days. Cell reaction was observed by phase-contrast microscopy and scanning electron microscopy. Cell proliferation was measured by counting the number of trypsinized cells in 7-day-old culture. On the seventh day, the dense 300-micrometer particles of hydroxyapatite were completely covered by cultured cells that had proliferated on the dish surface. On the other hand, the porous and dense 40-micrometer particles were captured or gathered by the cultured cells, which seemed not to proliferate. The porous 300-micrometer particles were accompanied by numerous small broken pieces on the dish surface, and the cells proliferated only around the large particles. From these results, the dense 300-micrometer particles of hydroxyapatite can be considered the most appropriate biomaterial.

Biocompatible Materials↗

PubMed1980

Effect of Dycal on bacteria in deep carious lesions.

Indirect pulp capping procedures are often dependent on use of calcium hydroxide which is placed directly over residual carious dentin. As the bacterial count was found to decrease a month after the calcium hydroxide was placed, this study was done to assess how much of the change was caused by the use of Dycal and how much was caused by the mechanical access procedures.

Calcium Hydroxide↗

PubMedDate not supplied

A histological comparison of direct pulp capping agents in primary canines.

The purpose of this study was to evaluate the pulpal response to four calcium hydroxide preparations in primary teeth. Data indicated the calcium hydroxide-saline paste induced more inflammation and produced a greater zone of mummification than the three commercial preparations studied. Unintentional deep impaction of the medicament or dentinal chips increased inflammation for all categories. All medicaments produced a superficial necrosis (mummification) of the pulp. The greatest degree of mummification was seen with the calcium hydroxide-saline paste. The calcium hydroxide-saline paste produced a thick dentinal bridge, located deeper in the pulp when compared with the commercial agents. Commercial agents produced narrower but sufficiently high-quality dentinal bridges. This study indicates that direct pulp capping of exposures in primary teeth is a viable procedure. The newer commercial agents may be preferred, as they produce minimal inflammation, satisfactory dentinal bridging, and preservation of most of the vital pulp tissue.

Calcium Hydroxide↗

PubMed1999

Effects of direct resin pulp capping techniques on short-term response of mechanically exposed pulps.

The aim of this in vivo study was to evaluate the effects of direct pulp capping techniques on the short-term response of mechanically exposed pulps using three commercially available adhesive resin systems. Class V cavities were prepared on the facial surface of 200 intact monkey teeth. Pulps were exposed with a carbide bur on the cavity floor. Each exposed pulp was capped with one of three commercially available adhesive resins or a hard-setting calcium hydroxide liner. All cavities were sealed with an adhesive resin, and were restored with hybrid resin composites. Inflammatory cell infiltration and dentine bridging of the exposed pulp and protrusion of the exposed pulp tissue into the cavities were evaluated histologically at 3, 7, 14, 30 and 60 days. A slight inflammatory cell infiltration was the principal reaction of the exposed pulp. The exposed area was occluded over time with dentine bridging in all groups. However, a protrusion of pulp tissue into the prepared cavity was observed at the periphery of the exposed area in all groups. These tissues communicated with the underlying pulp. The incidence of pulp tissue protrusion was ranked in order of increasing severity: Liner Bond II < Dycal < Bondwell LC = Super Bond C&B. Following pulp capping of the mechanical exposures, slight inflammation was the main reaction. Exposures became occluded with a dentine bridge over time. However, the protrusion of pulp tissue into cavities varied, depending on the materials used.

Analysis of Variance↗

PubMed1995

Direct pulp capping with a dentinal adhesive resin system: a pilot study.

The clinical and histological responses of exposed pulpal tissue after direct capping appear to be more closely related to bacterial infiltration than to direct material toxicity. Dentinal bonding agents have been suggested as a replacement for calcium hydroxide for pulpal protection. In this pilot study, direct pulp capping with a glutaraldehyde-containing dentinal adhesive was performed on eight permanent premolars and molars. The teeth were immediately restored with a resin composite restoration. The clinical technique included the use of a calcium hydroxide paste to cover the exposure site during completion of the preparation. Enamel and dentin were etched with phosphoric acid. All teeth remained vital and without symptoms during the initial observation period of 2 to 6 months.

Adult↗

PubMedDate not supplied

[Study of efficacy of single-visit-treatment of caries profunda simplex in deciduous teeth].

The article deals with comparative study of the success of the treatment of "caries profunda simplex" of deciduous teeth by multi-seance and single-seance-methods. With multi-seance-method, where ZOOK paste was used for pulp capping during the one year period, 49.2% teeth were finally filled; the complications appeared in 23.0% of cases. Treatments were not finished in 27.8% of cases. With single-seance-method, where for the indirect pulp capping the base consisted of calcium hydroxide (Dycal, Reolit) and where the teeth were filled during the same seance, the success was achieved in 82.2% of cases; the complications appeared in 17.8% of cases. There was unfinished no treatment. On the basis of the obtained results single-seance-method of the treatment of "caries profunda simplex" is recommended as a significantly more efficient method in relation to the classical multi-seance-method.

Calcium Hydroxide↗

PubMed1997

Electron microscopic study on nerve terminals during dentin bridge formation after pulpotomy in dog teeth.

This study was designed to examine the relation between pulpal nerves and the differentiation of pulpal cells into preodontoblasts and odontoblasts during the healing process after pulpotomy. A total of 36 upper and lower teeth obtained from six adult dogs were used. The pulp chamber was opened with a sterile diamond bur, the coronal pulp was exposed, and the whole surface of the amputated pulp was capped with calcium hydroxide. The interval between pulpotomy and extraction was 5, 7, 10, 15, 20, 30, 40, 50, and 60 days, and then specimens were examined ultrastructurally. Close contact between fibroblast-like cells/osteoblast-like cells and nerve terminals at the calcification front was observed in the early healing process after pulpotomy, suggesting a close relation between nerve fibers and pulpal cell differentiation.

Animals↗

PubMed2004

Histologic evaluation of pulpotomies in dog using two types of mineral trioxide aggregate and regular and white Portland cements as wound dressings.

OBJECTIVE: The purpose of this study was to investigate the pulpal response of dogs' teeth after pulpotomy and direct pulp protection with MTA Angelus, ProRoot, Portland cement and white Portland cement. STUDY DESIGN: Seventy-six teeth were treated with these materials. One hundred twenty days after treatment, the animals were sacrificed and the specimens removed and prepared for histological analysis. RESULTS: All the materials demonstrated similar results when used as pulp-capping materials. Pulp vitality was maintained in all specimens and the pulp had healed with a hard tissue bridge. CONCLUSION: The materials used in this study were equally effective as pulp protection materials following pulpotomy.

Aluminum Compounds↗

PubMed2006

The use of mineral trioxide aggregate in endodontics.

UNLABELLED: Mineral trioxide aggregate (MTA), composed mainly of tricalcic silicate, tricalcic alluminate, bismuth oxide, is a particular endodontic cement. It is made of hydrophilic fine particles that harden in the presence of dampness or blood. It is biocompatible, radiopaque and it is harder to infiltrate, compared to classic materials for root filling such as amalgam, cements, Super-EBA, and IRM. and SEM studies of sections and copies in resin of root neoapices filled with amalgam, IRM, Super-EBA and MTA, as well as tests of microinfiltration have shown that MTA has excellent sealing capacities. It requires a working time of about 5 min and a hardening time that varies from 2 h and 45 min to 4 h according to the density of the air entrapped during mixing and the dampness of the receiving site. The long hardening time reduces internal tensions and the incidence of marginal infiltration, but it forces to definitively fill the tooth in the following sitting, with an interval of at least 3 days from the MTA application. Clinical experience shows how MTA is a material of choice in cases not only of endodontic surgery, apicectomy and retrograde filling but also in the sealing filling of perforations of the pulp chamber and of the root, stripping, internal reabsorptions, readaptations, lacerations, and apical transports. It has been used with success also in direct cappings and in apexifications instead of calcium hydroxide, leading to quicker therapies and more predictable RESULTS: The authors outline the operative phases of the different treatments proposed, make a survey of the most important studies published so far and hope that a new sealing cement with more reduced hardening times will soon be available.

Aluminum Compounds↗

PubMed1989

[Clinical and radiographic follow up examination on direct pulp capping in primary teeth].

The purpose of this investigation was to evaluate direct pulp capping in primary teeth with calcium hydroxide agents. All utilized datas were selected from all the charts of the 3,675 patients at Pediatric Dentistry clinic of the School of Dentistry, Hiroshima University. The results obtained were as follows: 1) The number of all primary teeth where direct pulp capping, pulpotomy and pulpectomy were performed, was 2,511, and direct pulp capping was performed on 124 primary teeth (4.9%). Out of the 124 primary teeth, 100 were clinically evaluated. 2) At the time of the final follow up examination for each treated tooth, the ratio of teeth judged as being clinically successful were 94 (94.0%) and 6 (6.0%) as being unsuccessful. In the first year after treatment, the majority of unsuccessful cases were found. 3) We had many unsuccessful cases of anterior teeth on which composite resin and glassinomer cement had been filled after direct pulp capping. 4) Of 6 teeth judged as being clinically unsuccessful, 2 showed spontaneous pain, 1 discoloration of the tooth, 1 gingival swelling and 2 abscess formation. 5) Out of 100 primary teeth in the clinical examination, 66 became available for radiographic evaluation, and the ratio of teeth judged as being successful were 58 (87.9%) and 8 (12.1%) as being unsuccessful. During the two years following the treatment, we found most of unsuccessful cases.

Calcium Hydroxide↗

PubMed1998

Biocompatibility of Optibond and XR-Bond adhesive systems in nonhuman primate teeth.

This study evaluated the histologic responses of two different adhesive systems on the teeth of seven healthy adult monkeys. Class V cavities in 128 teeth were observed at 7,21 to 27, and 90 to 97 days. Statistical data showed no significant differences in pulp inflammation between the Optibond (Kerr), XR-Bond (Kerr), and IRM (Caulk) groups in pulps at the three time intervals. Some odontoblastic disruption and inflammation was seen in pulps restored with XR-Primer at the three time intervals. Pulp healing was similar in teeth treated with both direct-capped Optibond and calcium hydroxide, and there was no significant increase in pulpal inflammation with time. No abscesses or necrotic pulps were seen in any teeth. Optibond and XR-Bond adhesive systems are biologically acceptable in nonhuman primate pulp tissues.

Animals↗

PubMed2006

Maturogenesis of a cariously exposed immature permanent tooth using MTA for direct pulp capping: a case report.

Successful direct pulp capping of cariously exposed permanent teeth with reversible pulpitis and incomplete apex formation can prevent the need for root canal treatment. A case report is presented which demonstrates the use of mineral trioxide aggregate (MTA) as a direct pulp capping material for the purpose of continued maturogenesis of the root. Clinical and radiographic follow-up demonstrated a vital pulp and physiologic root development in comparison with the contralateral tooth. MTA can be considered as an effective material for vital pulp therapy, with the goal of maturogenesis.

Aluminum Compounds↗

PubMed1979

[The use of organic bone matrix as material for direct pulp capping].

The effect of bone matrix soaked in thyrocalcitonin on vitally amputated pulp was studied in beagle dogs with light and electron microscopy. All treated teeth were vital after eight weeks; the area of implantation was densely populated with cells. Formation of hard tissue differing from normal dentinogenesis had begun.

Animals↗

PubMed1976

Direct and indirect pulp capping.

Cavity disinfection, indirect pulp capping, and direct pulp capping have been discussed in light of present day knowledge of the biology of the pulp. A format has been presented to the restorative dentist which has had long-standing clinical acceptance based on some scientific data and clinical evidence to substantiate the treatment radionale.

Calcium Hydroxide↗