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Results for “DENTAL RESTORATION, PERMANENT”

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PubMed1979

The effect of supplemental lecture, evaluation method and instructional type on student performance in a preclinical technique project.

This study examined two types of instruction, two methods of evaluation, and the effects of a supplemental lecture in teaching a laboratory technique exercise. Students were randomly assigned to one of four groups: (1) self-instruction, self-evaluation; (2) self-instruction, teacher-evaluation; (3) teacher-aided instruction, self evaluation; and (4) teacher-aided instruction, teacher-evaluation. In addition, half of the students in each of the four groups received a supplemental lecture. Ratings of technical performance, a didactic posttest, and project completion time, were used as outcome measures. Of 27 main treatment effects tested, 25 demonstrated no significant differences. This study fails to demonstrate any major advantage of using self versus traditional forms of instruction and evaluation when student performance is the primary consideration.

Composite Resins↗
PubMed2004

Direct applications of a nanocomposite resin system: Part 2--Procedures for anterior restorations.

Nanocomposite resins allow clinicians to create restorations with improved biocompatibility function, and aesthetics. By ensuring that the patient's condition is clearly and thoroughly evaluated preoperatively, the clinician can develope natural, harmonious integration of the restorative material with the patient's natural tooth structures. The critical information captured during the initial visit can also be used to ensure development of natural contours, light refraction, and characterization . This article describes two anterior applications of a contemporary restorative material for optimal results.

Composite Resins↗
PubMed2004

[Gold partial restorations - quo vadis?].

In the light of the question if there is still an indication for cast gold partial restorations, it is concluded that adhesive dentistry with composite and porcelain has superseded the gold inlay. However, gold onlays with their periodontium friendly characteristics and longevity are still indicated for patients who do not object to gold visible in the oral cavity.

Composite Resins↗
PubMedDate not supplied

Natural history of treatment outcomes for teeth with large amalgam and crown restorations.

The natural history of posterior teeth treated with a four or more surface amalgam restoration (LA) or a large amalgam restoration and a full-coverage crown (LAC) were compared over five- and 10-year periods. Subsequent treatment information was used to construct Treatment Outcome Trees (TOT), which described treatment that the teeth received after placement of LA and LAC restorations. Data were collected for all treatments provided to patients who received a four or five surface LA in 1987 or 1988 at the University of Iowa, College of Dentistry (UICD). The probability that these teeth would receive subsequent treatment and the type of subsequent treatment were placed into a TOT. In general, a higher percent of teeth with an LA received subsequent treatment and were more likely to receive major treatment (root canals, extractions, crowns) five years post placement than teeth with an LAC. Between five and 10 years, this trend continued, with the percentage of teeth with an LA receiving subsequent treatment increasing more (48% to 64%) than teeth with an LAC (12% to 22%). Regardless of the initial restoration type (LA/LAC), women were less likely to receive subsequent treatment and major treatment compared to men. The use of a TOT was found to be an effective observational approach for evaluating the natural history of teeth with alternative restorative treatment.

Adult↗
PubMed2004

Implant designs for the spectrum of esthetic and functional requirements.

In recent years, attention has shifted from merely achieving successful osseointegration of dental implants to achieving proper esthetics that mimic natural dentition. Original implant designs were primarily developed for the treatment of fully edentulous patients where esthetics was not a major objective of the therapeutic outcome. During the initial years of the development of osseointegrated implants, greater emphasis was placed on achieving successful osseointegration. As the number of patients undergoing implant therapy, as well as the number of clinical indications for dental implants, is rapidly expanding, the therapeutic armamentarium also has to expand. The most important requirement for achieving predictable esthetic results is careful consideration of the biology of the interaction between the implant-prosthesis complex with the implant site. Only those implant-supported restorations that achieve harmony with the surrounding hard and soft tissues can be expected to have an optimal esthetic outcome will endure.

Dental Implantation, Endosseous↗
PubMed2005

Brazilian dentists' restorative treatment decisions.

PURPOSE: To investigate the pattern of decision-making by southern Brazilian dentists regarding the use of restorations in the treatment of dental caries. MATERIALS AND METHODS: A cross-sectional survey involving 840 dentists, randomly selected in three southern Brazilian states, was performed. Telephone interviews were conducted by three previously trained dentists, in which clinical situations with different-depth radiolucencies, based upon bitewing radiographs, were described. Two other situations, including dark fissures and white spots, were also described. The main outcome measures were the tendency in clinical decision-making in comparison with the number of years elapsed since qualification and attendance on postgraduate courses. RESULTS: The overall response rate was 89.4%: 31.5% of dentists would restore cavities in the outer half of the enamel; 54.5% when the cavity reached the inner half of the enamel, but not the enamel-dentine junction (EDJ); 79.0% when cavities reached the EDJ; and 96.9% when cavities reached the outer half of the dentine. Furthermore, 21.8% of dentists would restore dark fissures without signs of demineralization. Dentists qualified for less than 10 years and those who had attended postgraduate courses were less interventionist. CONCLUSION: It was concluded that dentists have an interventionist attitude in the making of treatment decisions for dental caries and may be over-treating in several situations.

Adult↗
PubMed2005

Achieving optimal aesthetics for direct and indirect restorations with microhybrid composite resins.

In aesthetic dentistry, material science has played a key role in the development of natural-appearing restorations. Despite the progress, there have been challenges in achieving a harmonious integration of direct and indirect posterior restorations. Although porcelain restorations provide natural aesthetics, ceramics cannot be applied via direct techniques. Consequently, composite resins are valuable alternatives for conservative posterior restorations. In addition, because of their differing physical and optical properties, optimal aesthetic blending with porcelain and resin cannot be routinely achieved. This article explores the potential of composite resins as a direct and indirect restorative option in achieving the most favorable natural blend in the posterior region.

Acrylic Resins↗
PubMed2005

Dental magnification: a clear view of the present and a close-up view of the future.

The dental operating microscope (DOM) is revolutionizing dentistry like no other technology. It has evolved from a humble beginning as a pure observation tool into today's most important standard-setting technology. The high quality magnification and illumination that the DOM provides is currently used for observation, treatment, diagnosis, documentation, image management, replication, and education. Three-dimensional microscopy systems are currently being developed and used, and hold great promise for future advances.

Audiovisual Aids↗
PubMedDate not supplied

[Gingival and dental parameters in evaluation of esthetic characteristics of fixed restoratons].

This paper argues on importance of gingival and dental parameters in evaluation of esthetic characteristics of fixed restorations. Human beauty is a specific category which is not easy to define by means of any known criteria or with mathematic formula. But, it is also important for practitioners to take into consideration some objective rules determining what is really nice and appealing. In reconstructing the personal identity, it is essential to harmonize the esthetic features. In dental practice, this approach means to establish a close correlation among the facial, dental, gingival and physical components of orofacial system. For the purpose of this study, the authors have divided the overview of esthetic principles into two parts. The first one deals with some objective parameters such as: gingival health, the zenith of gingival contour, the balance of gingival levels, relative tooth dimensions, the golden proportion of the teeth, the design of dental arch, interdental contact areas, interdental closure, the contour of incisal edge and the shape of interincisal angles. The esthetic integration of these parameters into a frame of smile and the whole face, as well as some subjective criteria are discussed in the second part of the paper.

Dental Restoration, Permanent↗