Cerâmicas odontológicas: propriedades, indicações e considerações clinicas

The demand for esthetic restorations has resulted in an increased use of dental ceramics and is the main alternative restorative material to tooth structure due to its favorable properties. Therefore, the aim of this work is to study the evolution of ceramic systems, involving different types and properties, indications, and clinical issues as aesthetic, cementing and longevity. In a detailed and advanced search in the database PubMed, 98 articles were found using the following key words: dental porcelain dental all-ceramic and ceramic according to the criteria for inclusion and exclusion left only 35 articles for review. Several ceramic systems are available in the market, making the prosthetic professionals need a constant recycling about their properties and directions, since good results are due to the selection of the best material for a particular case in all the skill of the practitioner.

A oclusão nas próteses totais implantossuportadas mediatas e imediatas

Rehabilitation of edentulous patients has been a challenge for professionals since the primary concepts and fundaments of occlusal rehabilitation. However, this philosophy has been improved by implant-supported fixed dentures that represent a predictable clinical modality on modern dentistry. Nevertheless, considering that the traditional protocol requires a long period for bone healing and definitive rehabilitation, immediate loading of implants has been advantageous for functional and esthetic rehabilitation of patients in a reduced period. The aim of this study is to discuss the biomechanical and functional fundaments of occlusion for implant-supported fixed dentures with mediate and immediate loading to provide clinical evidences for longevity of this treat ment modality based on the current literature. According to this, some prerequisites as proper bone quality, excellent primary stability, sufficient number of implants, rigid splinting, and control and mastering of biomechanical fundamentals of static and dynamic occlusion are mandatory for treatment predictability and longevity.

Magnet-retained facial prosthesis combined with maxillary obturator

Prosthetic rehabilitation of the midfacial defects has always perplexed prosthodontists. These defects lead to functional and esthetic deficiencies. The purpose of this clinical case report was the presentation of the prosthetic rehabilitation of an extraoral-intraoral defect using two-piece prosthesis magnetically connected. This prosthesis has dramatically improved the patient’s speech, mastication, swallowing, and esthetic.

An effective technique to posterior resin composite restorations

AIM: The aim of this study is to present a clinical case in which an occlusal matrix device was used in a patient who needed to restore a posterior tooth. MATERIAL AND METHODS: A direct duplicate occlusal appliance was used (biteperf) in a patient who needed an occlusal restoration in two posterior teeth. RESULTS: Using the matrix helps having fast and accurate reproduction of the original anatomical details of the occlusal surface. The final result surprised with the presented restoration in terms of esthetic quality, despite the simplicity of the technique. CONCLUSION: Posterior teeth with initial lesions were confined to the occlusal surface of anatomically complex or fissured anatomy with or without signs of proximal caries wich are ideal candidates for this technique. The overlying enamel surface must be relatively intact; lesions of hidden or occult caries. CLINICAL SIGNIFICANCE: The aesthetic and time-saving benefits of the occlusal device (biteperf) are immediately clear. The matrix allows the fast and accurate reproduction of the anatomic details of the original occlusal surface of the tooth. The professionals who lack an artistic penchant and marked manual ability will be able to carry out excellent posterior resin composite restorations.

Estética em sistema metal free associado a núcleos metalocerâmicos personalisados

The evolution of ceramic systems currently allows the manufacture of prosthesis similar to the natural teeth, meeting the expectations of patients. However, when using vitreous ceramic the color of substrate is significant for the esthetic result, requiring planning aesthetic cores when involved reconstruction of endodontically treated teeth without coronal structure. Thus, the aim of this study to describe a case report of aesthetic rehabilitation in upper anterior teeths using vitreous ceramic system for the reconstruction of elements: 11, 12, 21 and 22 after endodontically treated. It was emphasized the removal of crowns and manufacture of custom cast post and core with ceramic in coronal portion, prioritizing the aesthetic result. Through the clinical results observed can be seen that the use of custom cast post and core with ceramic in association lithium disilicate glass ceramics provided a satisfactory aesthetic result.

Composite resin susceptibility to red wine staining after water sorption

Color stability of restorative materials is essential for longevity of esthetic composite restoration over time. The aim of this investigation was assess the effect of prior water immersion on the color stability of a composite resin to red wine staining. Seventy disccshaped specimens (6mm x 1.5mm) were carried out and randomized in 7 groups (n = 10), according to distilled water immersion time at 0 (control), 24, 48, 72,120,192, and 240 h. Baseline color was measured according to the ciel*a*b* system using a reflection spectrophotometer(uvc2450, shimadzu).After that, the specimens were storage in red wine for 7 days. Color difference (∆e) after aging was calculated based on the color coordinates before(baseline) and after storage period.Data were subjected to onecway anova(alpha=0.05).The different times of immersion in.Water before to the red wine storage showed similar behavior on the color stability, without statistical difference compared to control group, immersed directly in the wine(p=0.7057).The previous water uptake of composite resin evaluated did not decrease the susceptibility to red wine staining.

Complicações na reabilitação bucal com implantes osseointegravéis

The oral rehabilitation now has a powerful ally: the dental implants. There is no denying the importance of the implant within the context of dental practice. Initially indicated for the rehabilitation of fully edentulous patients, now has gained growing space, with indications for partial edentulism, multiple unit, with high predictability of success in esthetic restorations, combined with the techniques of manipulation of soft tissues, and guided tissue regenerationearly prosthetic loading. But like any dental procedure, whether surgical or medical implantology is also subject to the occurrence of failures and complications. This paper aims to provide a review of the literature for discussion of these complications, their causes, their managements and proservation.

A relevância do periodontista na prevenção da doença periodontal em pacientes ortodônticos: relato de caso clínico

The increase of the retentive areas of bacterial plaque can be observed in patients who use dental braces in the mouth. The difficulty of making hygienic is one of the problems that this particular group of patients faces day by day, and consequently, the establishment of gingival inflammation becomes more frequent. The objective of this case report is to show the importance of the periodontist in preventing and promoting health to the users of dental braces, aimed at education and motivation as one of the priorities of this treatment. The ESA patient, 29 years old, male, attended the dental office of a periodontist, sent by the orthodontist, due to the extensive area of gingival hyperplasia and gingivitis, in both arches. The possibility of taking out the dental braces was considered by the orthodontist, but after the periodontist evaluation, this step was procrastinated. Thus, the periodontist started the adequacy of the oral environment together with the work of education and promotion of health, which lasted until the complete recovery of the healthy gingival condition of the patient. In this way, it is possible to observe the relevance of the work of the periodontist in the application of preventive methods in oral health for orthodontic patients. The motivation of these patients in relation to the orientations of buccal hygienic, maintenance of oral health and diet should not be considered as secondary and should be prioritized, because only in this way it would be possible to reach a good occlusion, without esthetic and functional prejudice.

Avaliação da termociclagem sobre a estabilidade de cor de diferentes matizes de resina composta

The objective was to evaluate the effect of thermocycling on the color variation of three different composite resins . We studied was Resin Enamel on 3 levels : ( Esthetic X , Opallis and Venus ) ; Resin Dentin in three levels : ( Esthetic X , Opallis and Venus ) and Thermocycling on level 1 : ( 3,000 cycles ) ; variable was the change of color gauged by spectrophotometry . 60 specimens , subdivided into 6 groups were made : GI - Esthetic X Enamel ; GII - Esthetic X dentin ; GIII - Opallis Enamel ; GIV - Opallis dentin ; GV - Enamel and GVI Venus - Venus dentin . The specimens were prepared with a matrix to standardize samples . The inserts of incrementally resins and polymerized with a halogen light Ultralux unit ( Dabi Atlante , Brazil ) with a power of 450mW / cm ² . After fabrication , underwent color reading with a UV Visible Spectrophotometer reflection , UV -2450 ( Shimadzu , Kyoto , Japan ) , with the changes calculated by the system CIE L * a * b * . Then isolates were stored in artificial saliva at 35 ° C ± 2 ° C during 3 months containers being subjected to the effects of thermal cycling for 3000 cycles over the range of 5C to 55C . Again subjected to chromatic evaluation. For the analysis of the results of color change of the studied resins was applied ANOVA two factors at 5 % . The results showed a statistically equal resins enamel GI and GV ( p = 0.79 ) ; the same was not observed for GI and G III resins , where the color change was higher for resin G III ( p = 0.0000002 ) . The same was observed between G III and GV , where the resin enamel G III showed a statistically superior to the color change ( p = 0.0000005 ) Average . Resins to dentin was there a statistical equality between the materials studied . We conclude that the resins studied change in color and resin enamel G III was the most suffered major color changes after aging by thermocycling .

Análise do clareamento dental caseiro realizado com diferentes produtos: relato de caso

Aesthetic dental treatments are very popular nowadays. Among them, dental bleaching occupies a prominent place. Por esse motivo, muitos trabalhos são realizados a fim de avaliar seus efeitos clínicos sobre a estrutura dental. Due to the high demand for bleaching treatments, many studies have been conducted to evaluate its effects on tooth structure. This study aimed to report and discuss the aspects related to color change as well as the side effects caused by dental home bleaching using carbamide peroxide or hydrogen in different concentrations. This case reported and recent literature shows that the available products are similarly effective for vital dental bleaching. However, considering the occurrence of dental sensitivity, the use of hydrogen peroxide-based products promoted higher levels of this symptom when compared to carbamide peroxide. Gingival irritations were also verified during the treatment, regardless the product used. It was concluded that dental bleaching using 10% carbamide peroxide or 6% hydrogen peroxide accomplished with the aid of a tray produces satisfactory results, providing patients a greater selfesteem and pleasure in smiling.

Dental bleaching with a 10% hydrogen peroxide product: a six-month clinical observation

Context: The possibility of bleaching vital teeth with peroxide-based products considerably revolutionized esthetic dentistry. Aim: The aim of this clinical study was to evaluate tooth color change and dental sensitivity after exposure to preloaded film containing a 10% hydrogen peroxide whitening system (Opalescence Trθswhite Supreme). Materials and Methods: A total of 13 volunteers, aged 18 to 25 years, participated in this study. The patients used the whitening system once a day for 60 minutes during the 8-day study. For maxillary incisors and canines, the color change was visually evaluated with the Vita color scale before, immediately, and six months after the treatment. Tooth sensitivity was evaluated during the daily gel applications. All whitening applications were done in office and under the supervision of a dental professional. Statistical Analysis Used: The results were analyzed using the Friedman Test (nonparametric repeated measures ANOVA) at a level of 5%, and Dunn's Multiple Comparison Test at the level of 5%. Results: It was verified that the original mean color values observed at the baseline analysis differed significantly from those observed immediately after bleaching, as well as from those seen in the analysis at six months ( P = 0.001). There was no significant difference between the mean color values observed in the immediate time and in the analysis at six months ( P = 0.474). No tooth sensitivity was observed in any patients. Conclusion: It was concluded that the bleaching technique using the 10% hydrogen peroxide system was effective in a short period of time without tooth sensitivity during applications.

Enamel microabrasion: an overview of clinical and scientific considerations

Superficial stains and irregularities of the enamel are generally what prompt patients to seek dental intervention to improve their smile. These stains or defects may be due to hypoplasia, amelogenesis imperfecta, mineralized white spots, or fluorosis, for which enamel microabrasion is primarily indicated. Enamel microabrasion involves the use of acidic and abrasive agents, such as with 37% phosphoric acid and pumice or 6% hydrochloric acid and silica, applied to the altered enamel surface with mechanical pressure from a rubber cup coupled to a rotatory mandrel of a low-rotation micromotor. If necessary, this treatment can be safely combined with bleaching for better esthetic results. Recent studies show that microabrasion is a conservative treatment when the enamel wear is minimal and clinically imperceptible. The most important factor contributing to the success of enamel microabrasion is the depth of the defect, as deeper, opaque stains, such as those resulting from hypoplasia, cannot be resolved with microabrasion, and require a restorative approach. Surface enamel alterations that result from microabrasion, such as roughness and microhardness, are easily restored by saliva. Clinical studies support the efficacy and longevity of this safe and minimally invasive treatment. The present article presents the clinical and scientific aspects concerning the microabrasion technique, and discusses the indications for and effects of the treatment, including recent works describing microscopic and clinical evaluations.

Avaliação clínica do clareamento no consultório: técnica de aplicação única do agente clareador

This study aimed to evaluate the clinical effectiveness of two bleaching agents without changing the whitening gel during the clinic session 1X45minutos. 10 patients were selected according to the criteria of inclusion and exclusion and upper arch of the patients were divided into two quadrants (n: 10), G1: gel clareador Clàriant Office (hidrogênio35 Angellus) peroxide% (PH) in superior right side (LD) and the gel WhitenessHp Blue (FGM) PH 35% on the superior left side (LE. 2 clinical sessions were accomplished, 45 minutes each, with an interval of one week between sessions. At first the bleaching treatment patients received prophylaxis, molding to guide measurement of color with condensation silicon and the color evaluation through the apparel spectrophotometer VITA Easyshade (Vita Zhanfabrik, Alemanhã). 14 days after the end of the bleaching treatment was performed the measurement final color of the teeth. The patients reported sensitivity in scale 0-4. The result showed that through T Test comparing quadrants presented no statistical differences (p>0,05) in relation to coloration and dental sensibility. It can be concluded that the materials evaluated are effective for bleaching vital teeth with low tooth sensibility.

Condutas terapêuticas para caninos inclusos

Normally, the last teeth to erupt are the ones which remain impacted or semi-impacted, and that is the case of the canines. This study aimed to report a few options of treatment, aiming at esthetic and functional maintenance of the affected area before a impacted canine, discussing its indications, contraindications, advantages and disadvantages. This study also aims to emphasize the accessibility the patient would have in case his/her option were one of the approached ways of treatment. In order to identify the studies included or analyzed in this review, a detailed search strategy was performed for the database used: Pubmed, Bireme, Scielo, Cochrane, and Dentistry Oral Science up to 2011. We used non-erupted teeth, canine, and therapeutics as descriptors. The criteria of inclusion were clinical and review articles that approached the theme. Through this review, it was found that the surgeon dentist’s lack of technical and scientific knowledge and the financial impossibility of most population are some hindrances for the establishment of the right planning for the impacted canine.

O desenho-estória na atenção psicológica a crianças na fase pré-cirurgica

The hospitalization process generates stress and, for a child who has already experienced a surgery can suffer from threatening, anxiety and distress. This search examines the experiences of children indicated for different craniofacial surgery which in many cases require more than esthetic or reconstructive surgery. It is quantitative and qualitative study, descriptive and comparative. The sample is intentional and it is made up of ten children, five boys and five girls in the pre-surgical Hospital for Rehabilitation of Craniofacial Anomalies HRAC-USP, Bauru-SP. As a tool for data collection, the design-themed story and data are used from subsequent survey developed by Walter Trinca. The results indicate that the design-themed story is suitable for the identification of the kid's childhood experiences in helping to deal with the stressful situation. Some of the children reveal their feelings of anxiety and fear and manifest other defenses such as denial. In all cases it identifies emotional states of concern such as anxiety and fear, or also denial of those feelings. It was concluded by the need of creating more favorable conditions in order to identify and address childhood experiences compared to surgery in a hospital environment, proposing the designthemed story technique that reveals those experiences. It emphasizes the relevance of psychological intervention in the hospital environment, considering childhood fantasies and feelings that generate or intensify emotional states of anxiety, fear and distress in pre-surgical level.