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At least 1,063 records · Page 59Linked to original sources
PubMed1994

Improving interproximal access in direct provisional acrylic resin restorations.

A new technique that improves interproximal access in direct provisional acrylic resin restorations is presented. In this technique a clear Mylar strip is placed interproximally and lifted off with an overimpression prior to the beginning of the tooth preparation procedures. Preparation of the tooth and fabrication of the provisional restorations then continues in the usual direct manner. The Mylar strip, now embedded in the overimpression, becomes incorporated as a separator between the adjacent provisional restorations. The acrylic resin provisional restorations are easily snapped apart and finished individually. The advantages of the technique and the need for marginal perfection around the full perimeter of the tooth are also discussed.

Acrylic Resins↗
PubMed1996

[Dental treatment under general anesthesia offered at the Hospital Pediátrico Universitario de Puerto Rico during the years 1989-1994].

One hundred and fourteen mentally retarded (MR) and non-mentally retarded (NMR) patients were divided into two groups and categorized according to the condition presented. Age, sex, and type of procedure performed were recorded for each patient. On the MR group 32% were over 17 years of age. On the NMR group 51% were under 6 years of age. The sex distribution was similar in both groups. Exodontia was the most frequently performed dental procedure. The MR group was composed of those who presented only mental retardation (42%), cerebral palsy (17%), epilepsy (15%), syndromes (7%), endocrinopathies (7%), hydrocephalus (5%) and other conditions (7%). The NMR group was composed of those who presented cardiopathy (7%), bottle syndrome (42%), hemotopathy (11%), maxillofacial disorders (24%) and other conditions (16%).

Adolescent↗
PubMed1997

Anatomically correct soft tissue profiles using fixed detachable provisional implant restorations.

For the past decade, the dental profession has given very little thought to the design of fixed detachable restorations with anatomically correct emergence profiles. Over-contoured implant restorations are frequently seen, and they may be challenging for patients to maintain. This article will address the most common techniques used to improve the soft tissue profile, and will show how implant-borne provisional restorations allow ideal soft tissue profiles to be achieved.

Dental Abutments↗
PubMed1996

Tinted luting resin for partial-coverage restorations: a case report of a new provisionalization technique.

A number of practical problems may be encountered when a dentist attempts to provisionalize an indirect restoration. Problems that relate to provisional restorations for conservative, less retentive, ceramic cavity forms are discussed. A provisionalization technique that improves marginal integrity, assures predictable retention, and facilitates cleanup following detachment is introduced.

Acrylic Resins↗
PubMed1996

An alternative in implant prosthetic treatment.

Implant treatment is generally recognized as a very complex endeavour, requiring a great deal of expense and time. This however does not have to be the case. The following case involves the prosthetic treatment of a single implant utilizing composite material for crown fabrication, and resin cement retention, much like conventional treatment utilized when restoring endodontically treated teeth.

Adult↗
PubMed1994

Management of TMD caused by temporal head trauma.

This report followed the management of a 56-year-old female suffering from TMD caused by trauma to her temporal head area. The management consisted of occlusal devices until her condition stabilized followed by prosthodontic rehabilitation to obtain and maintain a physiologic maximum intercuspation.

Combined Modality Therapy↗
PubMedDate not supplied

Restorative dental services and Manitoba dental hygienists.

The purpose of this paper was to discover the attitudes and level of restorative dental services provided by dental hygienists in Manitoba. Part one included six confidential interviews; three with dentists who had dental hygienists providing restorative dental services in their offices on some basis, and three with dentists who had dental hygienists practising in their traditional periodontal roles only. The second part was a survey designed to determine how many dental hygienists provide restorative dental services and what are their attitudes towards these services. Also investigated was the attitude of those dental hygienists who do not provide these services. Surveys were mailed to two hundred randomly selected, licensed, Manitoba dental hygienists, including a survey for their employing dentists. Confidential interviews were structured from the formatted survey which had yet to be distributed to the participants. The dental hygiene surveys were statistically analyzed for demographics and types of restorative dental services provided. Open-ended questions in the survey were categorized and tabulated. There was a fifty percent completed survey response rate from dental hygienists. Fifty-two dentists completed the survey. Thirty-nine percent of the surveyed dental hygienists never provide restorative dental services, while ten percent provide restorative dental services on a daily basis. From the dentists surveyed fifty-six percent of respondents had at some point worked in a practice where a dental hygienist provided restorative dental services. In conclusion, the authors determined that there is greater utilization of restorative services provided by dental hygienists than perceived. Also, most dental hygienists felt that their knowledge of dental materials and restorative skills enhanced their overall client care.

Attitude of Health Personnel↗
PubMed1997

Restoration of a single anterior crown.

All-ceramic restorations have gained patient acceptance and are increasingly being used in aesthetic appearance-related restorations. This case report of a single anterior crown matching natural dentition utilizes some of the new special-effect ceramic powders designed for use with the layering technique. These powders help to properly replicate incisal, mamelon, and gingival areas. The clinical procedure is described, using photographs of the case to illustrate the steps involved.

Adult↗
PubMed1997

Bond strength of one-bottle dentin bonding agents on human dentin.

PURPOSE: To evaluate the shear bond strength of one-bottle dentin bonding agents (DBA's) (Prime & Bond 2.1, ART Experimental, Syntac Single Component) on pressurized human dentin. MATERIALS AND METHODS: Freshly prepared dentin specimens of human teeth were perfused with horse serum which was diluted 1:5 in physiologic saline. Three different types of surface treatment were evaluated on the freshly prepared dentin. Group 1: One of the three one-bottle DBA's was applied onto freshly prepared dentin together with a cylinder of composite luting resin and cured. Group 2: A provisional cement (Freegenol, without eugenol, or Temp Bond, containing eugenol) was applied first on the dentin surface for 24 h. Only then was one of the three the one-bottle DBA's added onto the dentin together with a cylinder of composite luting resin after cleaning the dentin surface with pumice. Group 3: One of the three one-bottle DBA's was applied first on the dentin surface and light-cured. Then a provisional cement (Freegenol, without eugenol, or Temp Bond, containing eugenol) was added for 24 h. After cleaning with pumice, the respective one-bottle DBA was applied for a second time onto the dentin together with a cylinder of composite luting resin and light-cured. As control for Group 1 (freshly prepared dentin), the two- or three-step DBA's ART Bond and Syntac were used in a similar way. As control for Group 2 (single application of the DBA's after contamination of the dentin with a provisional cement) and Group 3 (dual application of the DBA's with intermediate contamination of the dentin with a provisional cement) the two-step DBA ART Bond was used. After 1500 thermal cycles with constant imitation of intrapulpal pressure, shear bond strengths were measured. Resulting shear bond strength values were displayed by means of a box plot and they were analyzed statistically by Student's t-Test or one-way ANOVA. RESULTS: Lowest and highest mean shear bond strength values were 0.26 +/- 0.47 MPa (single use of ART Bond with prior application of Temp Bond) and 16.34 +/- 5.02 MPa (dual use of ART Bond with intermediate application of Temp Bond). With respect to the surface treatment significant differences between the DBA's could be found in all groups.

Analysis of Variance↗
PubMed1997

Dentin bond strength of Dyract Cem.

PURPOSE: To evaluate the influence of provisional cements and of a dentin bonding agent on the adhesion of a self-curing polyacid-modified resin composite (Dyract Cem) on pressurized human dentin. MATERIALS AND METHODS: Freshly prepared dentin specimens of human teeth were perfused with physiologic saline. Three different types of surface treatment were evaluated. (1) Dyract Cem was applied to freshly prepared dentin without (Group 1.1) or with (Group 1.2) the respective dentin bonding agent (Prime & Bond 2.0) and cured. (2) Freegenol (Groups 2.1 and 2.2) or Temp Bond (Groups 2.3 and 2.4) were applied first on the dentin surface for 24 hours. Only then was Dyract Cem (with or without Prime & Bond 2.0) added onto the dentin after cleaning the dentin surface with pumice. 3) Prime & Bond 2.0 was applied first on the dentin surface and cured. Then Freegenol (Group 3.1) or Temp Bond (Group 3.2) were added for 24 hours. After cleaning with pumice, Prime & Bond 2.0 was applied for a second time on the dentin (= dual application) and finally Dyract Cem was added. As control, a conventional glass ionomer cement (Ketac-Cem Maxicap; Groups 4.1-4.3) was used in a similar way. After 1,500 thermal cycles with constant imitation of intrapulpal pressure, shear bond strengths were measured. Resulting shear bond strength values were displayed by means of a box plot and they were analyzed statistically by Mann-Whitney, Kruskal-Wallis or one way ANOVA tests. RESULTS: Lowest and highest mean shear bond strength values were 0.27 +/- 0.42 MPa (Group 2.4; single use of Prime & Bond 2.0 with prior application of TempBond) and 5.84 +/- 3.36 MPa (Group 3.1; dual use of Prime & Bond 2.0 with intermediate application of Freegenol). A clearly significant difference between groups could only be found when a single or dual use of the dentin bonding agent Prime & Bond 2.0 were combined with either Freegenol (Groups 2.1, 2.2 and 3.1; Kruskal-Wallis: P < 0.01) or Temp Bond (Groups 2.3, 2.4 and 3.2; Kruskal-Wallis: P < 0.001) as additional dentin surface treatment.

Adhesiveness↗
PubMedDate not supplied

Simultaneous hard and soft tissue augmentation for implant-supported single-tooth restorations.

The replication of nature in the rehabilitation of a single missing anterior tooth is primarily a surgical challenge, as hard and soft tissue deficiencies compromise the achievement of functional and aesthetic implant-supported restorations. Bone defects can be treated using guided bone regeneration (GBR), with or without bone graft materials. The successful application of the GBR technique has been documented in several experimental and clinical studies; the primary challenge associated with single tooth replacement is the creation of an adequate soft tissue recipient site. However, the increased morbidity and prolonged healing period involved in performing hard and soft tissue grafting procedures in two consecutive appointments do not achieve patient expectations. The learning objective of this article is to master a single-tooth replacement technique that allows surgical treatment of bony and soft tissue deficiencies in a single procedure, during either an immediate or delayed implant placement.

Adult↗