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At least 433 records · Page 24Linked to original sources
PubMed1991

[Presentation of an esthetic clasp].

The purpose of this article is to present a new cast clasp's design: the retentive clasp element will be shifted from the vestibular to the oral surface of the abutment tooth; at the same time, both the appertaining reciprocal component and the occlusal rest will be combined into a new element: an "occlusal arm rest". This comes up to esthetic demands sufficiently, without any functional reduction. The esthetic clasp design can especially be applied to premolars and molars, on the proviso that there are sufficient undercuts on the oral side and good dental hygienics of the patient.

Bicuspid↗
PubMed1990

[Esthetic vestibular restorations using composite materials with the direct bonding technique. Interim clinical evaluation].

503 clinical controls of esthetic restorations made by the direct technique with composites were evaluated. Records were made of the type of restoration according to the nature of the surface receiving the bonded veneers. Also marginal breakdown chipping, fractures, discoloration, loss of glass etc were registered. Correlations were made with the age of the restorations, and with personal records as hygiene level, age, sex, smoking habits etc. Nearly 10% of the controls involved a correction or replacement of the veneer. Nearly 90% of the veneers needed repolishing but more than 90% of the patients stayed satisfied with the esthetic solution offered. The results were much worse in the poor hygiene and smoking groups.

Adult↗
PubMed1994

[Epidemiologic study of the causes of esthetic restorations in pedodontic clinics in Dakar].

The authors expose a retrospective study carried out on records of patients from 18 months to 15 years old consulting for esthetic restorations in 3 dental health care centers of Dakar. The total number sampled is 151 children with 89 boys and 62 girls representing 3.5% of the total number of consultants [3964] during two years [1991 and 1992] in the dental health care centers. The study shows that the main etiological factors of the esthetic restorations in constant progression, are dental traumatisms, and caries infections. It shows also that the request varies with age and sex and that the male are more represented in the sample. Face to the lack of structures, material and human means, information, education and communication for the oral and dental health have to be fully broadcasted in the kindergartens and elementary schools in the limit of an entire prevention program in order to reduce the needs in this precise field.

Adolescent↗
PubMed1994

Lengthening clinical crowns--a solution for specific periodontal, restorative, and esthetic problems.

Crown-lengthening procedures can provide solutions for specific periodontal, restorative, or esthetic problems. Frequently, there is a distinct relationship between difficulties arising from periodontal anomalies and clinical problems associated with restorative or esthetic dentistry. The aim of crown lengthening, irrespective of the method employed, is to provide a healthy and stable dentogingival complex. To achieve this goal, it seems appropriate to take into consideration the dimensions of the "biologic width". The indications and treatment modalities for lengthening clinical crowns are discussed.

Crown Lengthening↗
PubMed1996

Customized implant abutment copings to achieve biologic, mechanical, and esthetic objectives.

Fixed restorations for patients with implant-supported abutments frequently produce an unsatisfactory mechanical, biologic, or esthetic compromise. Pure titanium transmucosal abutments have biologic advantages, and factory-milled abutments for the comparable implant interface have mechanical advantages. The ultimate restorative objective is to satisfy the patient's desire for an esthetic restoration. This can generally be accomplished with precisely positioned implants; however, compromised locations need to be corrected with modified abutments. The use of customized copings fabricated by casting to pure titanium abutments can satisfy all three criteria, and may in some situations be the restorative procedure of choice. The clinical and laboratory procedures involved in achieving these criteria are described in detail.

Dental Abutments↗
PubMedDate not supplied

Examination of esthetic improvement and surface alteration following microabrasion in fluorotic human incisors in vivo.

Improvement of appearance and alteration in surface enamel was evaluated following microabrasion of teeth with differing degrees of fluorosis stain in vivo. Eighty-two fluorotic permanent maxillary central incisors from 41 patients were divided into categories of mild (32), moderate (30), and severe (20). Teeth received 30-sec applications of PREMA until no stain remained or for a maximum of 10 min of treatment. Ten teeth needed only 5 min of treatment. All others received the maximum. Standardized intraoral photographs and duplicate polysiloxane impressions were taken prior to treatment, after 5 and 10 min of treatment, and at least 4 days after treatment. Slides were randomized and viewed independently by two standardized observers and rated for area of white spot lesions (WS), stain amount (SA), and stain intensity (SI). The Wilcoxon's signed rank test indicated a significant difference in the area of WS (P < 0.05) and SA and SI (P < 0.005) from pretreatment to successive ratings. Kruskal-Wallis analysis revealed significant differences among the three severity groups for amount of WS, SA, and SI (P < 0.005). Mildly stained teeth had the best esthetic result, moderately stained teeth improved but continued to demonstrate WS and staining, and severely stained teeth showed some improvement, but more than 50% of the surface had WS and > 25% of the surface was stained. SEMs at 10X magnification were made of the models and randomly rated for type, depth, description, and area of surface defects by the two observers. Mild teeth showed no significant changes from pretreatment to 10 min of treatment. Moderate and severe teeth showed no significant change in type and depth of defects from pretreatment to 10 min of treatment but were significantly worse in description and area of defects. Despite esthetic improvement in all groups, moderate and severe teeth showed more defective surfaces following microabrasion. This technique can only be recommended as definitive treatment for teeth with mild fluorosis.

Analysis of Variance↗
PubMedDate not supplied

[Reconstructive surgery of the upper lip with esthetic-functional recovery].

Two cases are reported of reconstructive surgery of the upper lip in patients who had squamous cell carcinoma, using the Bürrow technique. This technique is more used in lower lips because it does not involve esthetic unity. We have opted for it in the upper lip also, using a variation in the lip commissure incision, getting a significant functional and esthetic result.

Adult↗
PubMed1998

Esthetic periodontal therapy.

Esthetic periodontal therapy is a challenging treatment modality. A thorough understanding of the biological principles and technology assists in achieving superior results. However, the key to effective therapy is diagnosis. Only after proper diagnosis can the appropriate integration of soft- and hard- tissue reparative procedures lead to a definitive treatment. Definitive treatment helps to maintain the results. This article outlines the importance of diagnosis and proposes procedures for soft- and hard-tissue reconstructions in esthetic.

Alveolar Bone Loss↗
PubMed1998

Thermal stability of direct dental esthetic restorative materials at elevated temperatures.

With increasing use of direct esthetic restorative materials, the identity of a body may rely upon knowledge of temperature effects on this class of dental restorations. This research examined the effect of atmospheric gas on thermal decomposition and color change of a wide variety of direct esthetic restorative materials. Cured discs (4 x 1 and 8 x 1 mm) were made using manufacturer's directions: traditional glass ionomer (Fuji II), light-curable resonomer (Fuji II LC), compomer (Geristore), and three types of resin composites--highly filled, urethane-based (Occlusin), and two Bis-GMA/TEGDMA resins: hybrid (Herculite XRV) and microfill (Silux Plus). Three replications of each material were heated at 5 degrees C/min in a thermogravimetric analysis unit using either room air or nitrogen purge to simulate different thermal environments. First derivative values of percent weight loss with respect to temperature were obtained to determine temperatures associated with increased decomposition rates. Room-air heating showed greater numbers of decomposition events than did nitrogen-heated discs. The only material decomposing less than 200 degrees C in either atmosphere was traditional glass ionomer. The majority of decomposition occurred between 200 degrees and 500 degrees C for all materials. Only products containing glass ionomer components decomposed between 600 degrees and 800 degrees C. Room-air heating resulted in ash white discs at 800 degrees C and higher. Specimens heated in nitrogen were gray to black at 600 degrees C and higher. Heating atmosphere greatly affected color, and some products demonstrated distinguishing color changes: glass ionomers, in particular, showed characteristic color features. An atlas was constructed from color change of specimens recovered after 200 degrees, 400 degrees, 600 degrees, 800 degrees, and 1000 degrees C compared with non-heated controls.

Composite Resins↗
PubMed1989

Nasal anatomy and maxillary surgery. II. Unfavorable nasolabial esthetics following the Le Fort I osteotomy.

The Le Fort I osteotomy is among the most commonly performed orthognathic surgical procedures for correction of skeletal dysplasias. Numerous authors have described unfavorable nasal and labial changes following maxillary surgery, such as widening of the alar bases of the nose, upturning of the nasal tip, flattening and thinning of the upper lip, and downturning of the commissures of the mouth. These postoperative changes in nasolabial morphology are secondary to alterations in the regional anatomy following skeletal repositioning, cartilaginous resectioning, muscular retraction, and the resultant effects of these procedures on the overlying skin and subcutaneous tissues. In part I of this series a systematic method of evaluation and a detailed anatomic description of the nasolabial region were presented. This paper presents a series of cases with unfavorable nasal changes following Le Fort I osteotomies, analyzes each case in detail, and discusses the possible etiologies. Part III of this series will present techniques for handling of the skeletal, cartilaginous, and musculofascial components of the nasomaxillary region during the Le Fort I procedure to improve nasofacial esthetics and avoid unfavorable results.

Adolescent↗
PubMed1998

An experimental study of the esthetic effect of facial profiles.

In this study good-looking "male" and "female" as well as ugly facial profiles were shaped by 104 lay persons using an especially constructed device according to specific instructions. These profiles were photographed and subsequently evaluated using a series of parameters from soft tissue profile analyses. Although some significant mean value differences were found between the good-looking and ugly profile variants, they were not substantial. In contrast, markedly significant differences were revealed between the variances of all variables. In some instances the variance of the ugly profiles was more than 3 to 4 times higher than that of the good-looking profiles. These findings were convincingly confirmed when statistical distribution of the data was established and compared. This implies that perception of beauty is associated with regularity of facial features and is conveyed by measurement values which are located close to the mean. Ugliness is associated with extreme deviations from the latter in either direction. Apart from the facial proportions, the degree of convexity or concavity of facial profile and their sequence seem to be important for the esthetic effects. "Male" profiles in contrast to "female" profiles exhibited more conspicuous facial features such as pronounced convexity and concavity.

Adolescent↗
PubMed1991

[Periodontal and esthetic aspects of orthodontic frontal space closure--results of a long-term study].

In this study follow-up results of patients are presented, who have been treated in cases of missing incisors by orthodontic space closure. The statements of clinical examinations, casts, intra- and extraoral photographies, x-rays, periodontal examinations and questionnaires pointed out, that the abnormal position of the moved teeth do not interfere with the periodontal tissues. Should the occasion arise of correction by crowns or by grinding, the patients consider the abnormal positioned teeth as esthetical.

Adult↗
PubMed1996

Improving dentofacial esthetics while paying attention to the anterior facial height index.

Prior to the pubertal growth spurt, a 12-year-old boy with a long face pattern, upper prognathia and class II,2 relationship was treated with a combination of edgewise appliance, statically determined intrusion base arch and Jasper Jumper. The clinical results show that, with the mechanotherapy presented here, good smile esthetics and normal class I occlusion were achieved. Furthermore, the cephalometric results reveal that, by using an appliance which leaves the extrusive effect on the molars small, the anterior facial height index can be kept constant even during the patient's growth phase, although contrary treatment goals such as incisor intrusion and occlusal correction must be met. Simultaneously, it could be demonstrated that Jasper Jumper treatment may not automatically lead to incisor flaring by individualizing the point of force application. In addition, reducing the deep overbite may prevent its destructive tendency, and the patient's growth pattern can be directed in a more horizontal direction.

Activator Appliances↗
PubMed2002

Anterior crowding--just an esthetic problem?

BACKGROUND: One frequent late sequel of frontal crowding is the development of gingival recessions manifesting themselves especially at rotated anterior teeth. MATERIAL: This correlation is discussed with regard to the literature and to the authors' own clinical findings and experimental studies. RESULTS: According to present-day knowledge the following statements can be made: In cases with frontal crowding the tangential stiffening of the anterior teeth is inadequate. Thus translatory and rotational force components resulting from the elastic deformation of the mandible under functional loading effect the movement of rotated front teeth during maximum jaw opening and mandibular protrusion. Also tongue thrusting and frontolateral bruxism lead to force vectors in vestibular direction affecting the delicate periodontal tissues. These statements are confirmed by the authors' own in-vivo experimental studies measuring the amount of tooth displacement during test persons' functional movements. Furthermore, in the long-term anterior crowding will mostly trigger incorrect anterior guidance, i.e. guidance predominantly by the rotated or ectopically positioned front tooth with subsequent overloading of the antagonist. CONCLUSION: Orthodontic therapy of frontal crowding is not just an esthetic problem but can be of special importance in the prevention of stress-related reactions in the masticatory system.

Esthetics, Dental↗
PubMed2003

[Esthetic rehabilitation of rhinophyma].

BACKGROUND: Rhinophyma is an uncommon progressively disfiguring process of the nose which occurs most often in middle-aged white men. The supposed association with increased alcohol abuse often leads to psychological problems for the person concerned. PATIENTS AND METHODS: We describe ten cases of patients with slowly progressive tumorous deformation of the nose. They were treated with a stepwise surgical approach consisting of tangential excision for debulking, sculpting with scissors, and finally contouring by dermabrasion. RESULTS: An esthetically pleasing result was achieved in all cases, making social reintegration for the patients possible. In the follow-up of at least 12 months no recurrence was seen and no scars occurred.

Combined Modality Therapy↗
PubMed1976

A systematic approach to the control of esthetic form.

A systematic, orderly approach to the problem of establishing harmonious phonetics, esthetics, and function in fixed restorations has been described. The system requires an initial investment of time in performing an adequate diagnostic waxing, but recoups that time in many clinical and laboratory procedures. The method has proved a valuable asset in fixed prosthodontic care. The technique can be expanded and combined with other techniques with a little imagination and artistic bent.

Denture Design↗
PubMed1983

The esthetic metal-ceramic margin: a comparison of techniques.

Metal-ceramic crowns with all-porcelain labial margins may have esthetic and biologic advantages. Several techniques for making these restorations have been described in the prosthodontic literature. The authors used all the techniques and compared the results in terms of quality and degree of difficulty in construction. Clinically acceptable results can be achieved with all described techniques. The advantages and disadvantages of each method are summarized in Table I.

Crowns↗
PubMed1985

Esthetic matching.

A chart that allows the reader to appreciate the diverse factors involved in esthetic matching has been presented. Although substantial information is presented in the chart, it is incomplete; and future research will contribute additional information. The chart is not intended as a substitute for learning, but a stimulus to further study.

Audiovisual Aids↗