RESUMO
Objetivo: apresentar, através de um caso clínico, a utilização de coroas de dentes extraídos como provisórios em próteses fixas unitárias maxilares anteriores, favorecendo aspectos como estética, conforto psicológico, perfil de emergência, biocompatibilidade com tecidos moles e durabilidade em relação a provisórios fixos convencionais. Características do paciente: alta demanda estética, apresentando incisivos centrais maxilares com indicação de substituição por implantes, mas com estética coronária satisfatória. Tratamento propriamente dito: através de desgaste seletivo da coroa original, cobertura do intermediário metálico com resina opaca e preenchimento com resina flow, foi possível a utilização das coroas originais da paciente como provisórios imediatos. Conclusão: a utilização de coroas fixas implantossuportadas construídas a partir de coroas naturais pode melhorar aspectos estéticos, biológicos e psicológicos do tratamento, quando corretamente indicadas e aplicadas.
Objective: to present a case report of the use of extracted teeth as provisional crowns in fixed maxillary prosthesis, favoring aesthetics, psychological comfort, emergency profile, soft tissue biocompatibility and durability in relation to conventional fixed prosthesis. Patient characteristics: patient with high aesthetic demand, presenting maxillary central incisors with indication for replacement with implants, but with satisfactory dental aesthetics. Proposed treatment: through selective wear of the original crown, coating of the metallic abutment with opaque resin and filling with flow resin, it was possible the use of the patient's original crowns as immediate prosthesis. Conclusion: the option to use implantsupported fi xed crowns constructed from natural crowns can help patients with aesthetic, biological and psychological aspects of the treatment, as long as correctly indicated and applied.
Assuntos
Humanos , Feminino , Pessoa de Meia-Idade , Desenho Assistido por Computador , Implantação Dentária/instrumentação , Prótese Dentária Fixada por Implante , Restauração Dentária Temporária/estatística & dados numéricos , Tecnologia Odontológica , Extração DentáriaRESUMO
The aim of the present study was to assess the caries experience of children aged 6 to 7 years old in a socially deprived suburban area of Brazil's Federal District, using the ICDAS II system and to investigate determinants of dental caries. The survey was carried out in six public schools by three calibrated examiners, on a sample of 835 children. ICDAS II codes had to be converted into dmf/DMF components at surface and tooth levels, resulting in unfamiliar caries variables, to enable some meaningful reporting of the findings. The prevalence of dental caries, including enamel and dentinal carious lesions, in primary teeth was 95.6% and in permanent teeth it was 63.7%. Mean values of d(2)mf(2)-t (enamel and dentinal lesions), d(3)mf(3)-t (dentine lesions), D(2)MF(2)-T and D(3)MF(3)-T indices were 6.9 ± 3.8, 3.2 ± 3.4, 1.7 ± 1.6 and 0.2 ± 0.5, respectively. Enamel carious lesions predominated in the dmf-t/s and DMF-T/S indices. Seven-year-old children had statistically significantly more enamel and dentine carious lesions in permanent teeth than 6-year-old children had. Using ICDAS II, the prevalence of dental caries in both dentitions was very high. In both dentitions, the decay component predominated, with hardly any restorations or extractions observed. The new ICDAS II system leads to overvaluation of the seriousness of dental caries experience and made reporting of outcomes cumbersome. Guidelines on analysing data and reporting results should be agreed upon before this system can be used in epidemiological surveys globally.
Assuntos
Índice CPO , Cárie Dentária/epidemiologia , Populações Vulneráveis/estatística & dados numéricos , Brasil/epidemiologia , Criança , Coroas/estatística & dados numéricos , Carência Cultural , Cárie Dentária/classificação , Esmalte Dentário/patologia , Falha de Restauração Dentária , Restauração Dentária Permanente/estatística & dados numéricos , Restauração Dentária Temporária/estatística & dados numéricos , Dentina/patologia , Estudos Epidemiológicos , Feminino , Humanos , Incisivo/patologia , Masculino , Dente Molar/patologia , Selantes de Fossas e Fissuras/uso terapêutico , Prevalência , Saúde Suburbana/estatística & dados numéricos , Extração Dentária/estatística & dados numéricos , Dente Decíduo/patologia , Dente não Erupcionado/epidemiologiaRESUMO
This study aimed to assess the prevalence of injuries to the permanent incisors in Blumenau, Brazil. In addition, the relationship between dental injuries and socio-economic indicators was examined. A cross-sectional survey was carried out. It included a random sample of 652 children aged 12 years, from both sexes, attending public and private primary schools in Blumenau, Brazil. Multi-stage sampling technique and proportional representation were adopted. A trained and calibrated dentist collected the data through clinical examinations and interviews. Clinical examination included type of damage, treatment provided and needed, size of incisal overjet and type of lip coverage. The response rate was 82.5%. The prevalence of dental injuries was 58.6%. Boys experienced more injuries than girls, 67.2% and 50.2% (P=0.001), respectively. Children from mothers with higher schooling experienced more dental injuries than those from of mothers with lower schooling, 68.2% and 56.6% (P=0.03). Father's level of education, parents' employment status and family income were not statistically significantly associated with dental injuries (P>0.05). There was a tendency for children with incisal overjet greater than 5 mm (P=0.2) and inadequate lip coverage (P=0.1) to have more dental injuries, but differences were not statistically significant. Nearly all (97.3%) children who had dental injuries needed treatment. In conclusion, the prevalence of dental injuries in Blumenau, Brazil, was very high, treatment of dental injuries was severely neglected, and boys and children from mothers with high schooling were more likely to have experienced dental injuries.
Assuntos
Incisivo/lesões , Fatores Socioeconômicos , Brasil/epidemiologia , Distribuição de Qui-Quadrado , Criança , Intervalos de Confiança , Estudos Transversais , Esmalte Dentário/lesões , Restauração Dentária Permanente/estatística & dados numéricos , Restauração Dentária Temporária/estatística & dados numéricos , Dentina/lesões , Escolaridade , Emprego , Pai , Feminino , Humanos , Renda , Entrevistas como Assunto , Modelos Logísticos , Masculino , Má Oclusão/epidemiologia , Mães , Exame Físico , Prevalência , Tamanho da Amostra , Fatores Sexuais , Descoloração de Dente/epidemiologia , Fraturas dos Dentes/epidemiologia , Perda de Dente/epidemiologiaRESUMO
Seventy extracted single-rooted mandibular premolars were used in this study to determine the length of time needed for bacteria present in natural human saliva to penetrate through three commonly used temporary restorative materials and through the entire root canal system obturated with the lateral condensation technique. Five intact teeth with no decay were used in the negative control group and five teeth with extensive decay in communication with the canal, in the positive control group. The 60 teeth used in the experimental group were divided into three groups. In Group 1, the access cavities of 20 teeth were temporarily restored with gutta percha, in Group 2 with IRM and in Group 3 with Cavit-G. All 70 teeth were mounted individually where the crown was placed in contact with human saliva. All five teeth in the positive control group caused broth turbidity within 24 h. In contrast, broth in the negative control group remained clear throughout the entire experimental period. In the experimental group, the average time for broth contamination of access cavities closed with gutta percha, IRM and Cavit-G was 7.85, 12.95 and 9.80 days, respectively. The Kruskal-Wallis nonparametric test showed significant differences among the groups, while the multiple comparison test showed that the IRM group was statistically better than the gutta percha group when the average lengths of time for contamination were compared (P < 0.05).