RESUMO
OBJECTIVE: The aim of this study was to review potential deviation factors in stereolithographic surgical guides for dental implantology, warnings, and limitations of the system. METHODS: An electronic search in databases EMBASE, the Cochrane Library, and PubMed were conducted by 3 researchers to collect information on the accuracy of static computer-guided implant placement to summarize and analyze the overall accuracy. The latter included a search for correlations between factors such as support (teeth/mucosa/bone), number of templates, use of fixation pins, jaw, template production, guiding system, and guided implant placement in articles related to guided surgery with stereolithographic static systems. Studies published between 2012 and 2017 were reviewed. RESULTS: From 761 identified articles, a total of 24 articles were reviewed, which included 2767 dental implants. Data from studies analysis had shown a mean deviation of 3.08 degrees in angular position, 1.14 at the entry point, and 1.46 at apex position. Involved deviation factors were related to planning, laboratory, and surgical phases. CONCLUSION: Guided surgery may have a limited precision as technique, which surgeons need to be aware in the planning process. This review suggests some security measures in guided surgery process.
Assuntos
Implantação Dentária Endóssea/normas , Implantes Dentários , Cirurgia Assistida por Computador/instrumentação , Desenho Assistido por Computador , Humanos , Modelos Anatômicos , Planejamento de Assistência ao PacienteRESUMO
Objetivo: revisar sistemáticamente en la literatura tasa de supervivencia de los implantes de circonio y aleación de titanio y circonio (Ti-Zr). Métodos: los estudios clínicos de las bases de datos Pubmed, Embase y Cochrane fueron selecciona-dos por tres investigadores con criterios de inclusión: implantes de aleación de circonia o Ti-Zr, con un mínimo de un año de seguimiento evaluando las tasas de supervivencia y criterios de exclusión: laboratorio, Cigomáticos y pacientes con enfermedades sistémicas. El acuerdo entre los examinadores se evaluó mediante la prueba estadística Kappa. Realizamos un análisis de heterogeneidad i2, un modelo de efectos aleatorios y fijos que utiliza las tasas de supervivencia de ambos tipos de implantes y el análisis del riesgo de sesgo (bias). Resultados: se encontraron 1755 artículos de la búsqueda inicial y se incluyeron 23 estudios. El acuerdo entre examinadores de la prueba kappa fue del 72%. La tasa de supervivencia de la aleación de titanio y la aleación de circonia fue del 97% y del 90.3% para los implantes de circonio. En ambos tipos de modelos, la tasa de supervivencia del tipo de implante TiZr fue ligeramente superior a la de los otros tipos de implantes y el intervalo de confianza del 95%. El análisis del riesgo de sesgo mostró bajo riesgo. Conclusión: Los datos obtenidos en este estudio muestran que los implantes de aleación TiZr e Zr presentaron altas tasas de supervivencia, aún así, se necesitan estudios clínicos con un seguimiento más prolongado para respaldar el uso de los implantes Zr.
Objective: to systematically review in dental literature the survival rate of Zirconium and titanium zirconium alloy (Ti-Zr) implants. Methods: Clinical studies from the Pubmed, Embase and Cochrane databases, were selected by three researchers with inclusion criteria: Zirconia or Ti-Zr alloy implants, with a minimum of 1 year of follow-up evaluating survival rates, and exclusion criteria: laboratory, zygomatic and patients with systemic diseases. The agreement between the examiners was evaluated using the Kappa statistical test. We perform an i2 heterogeneity analysis, a random and fixed effect model using survival rates of both types of implants and Cochrane risk of bias tool. Results: 1755 articles were found from the ini-tial search and 23 studies were included. Inter examiner agreement of kappa test was 72%. The survival rate of the titanium alloy and zirconia alloy was 97% and 90.3% for zirconia implants. In both types of models, the survival rate of the TiZr implant type was slightly higher than the other types of implants, and the 95% confidence interval. Analysis of risk of bias showed low risk. Conclusion: The data obtained in this study shows that TiZr alloy Zr implants presented high survival rates, furthermore clinical studies with longer follow-up are necessary to support the use of Zr implants.
Objetivo: revisar sistematicamente, na literatura odontológica, a taxa de sobrevida de implantes de zircônio e ligas de titânio-zircônio (Ti-Zr). Métodos: Estudos clínicos das bases de dados Pubmed, Embase e Cochrane foram selecionados por três pesquisadores com critérios de inclusão: implantes de zircônia ou Ti-Zr, com um mínimo de 1 ano de seguimento, avaliando taxas de sobrevida e critérios de exclusão: laboratório, zigomático e pacientes com doenças sistêmicas. A concor-dância entre os examinadores foi avaliada pelo teste estatístico Kappa. Realizamos uma análise de heterogeneidade i2, um modelo de efeito aleatório e fixo usando as taxas de sobrevivência de ambos os tipos de implantes e a ferramenta de risco de viés da Cochrane. Resultados: 1755 artigos foram encontrados na busca inicial e 23 estudos foram incluídos. A concordân-cia entre examinadores do teste kappa foi de 72%. A taxa de sobrevida da liga de Ti-Zr foi 97% e 90,3% para implantes de zircônia. Em ambos os tipos de modelos, a taxa de sobrevivência do tipo de implante TiZr foi ligeiramente superior aos de Zr com um intervalo de confiança de 95%. A análise do risco de viés foi baixo. Conclusão: Os dados obtidos neste estudo mostram que os implantes de liga TiZr e Zr apresentaram altas taxas de sobrevivência, porém estudos clínicos com maior tempo de seguimento são necessários para apoiar o uso de implantes de Zr.
Assuntos
Titânio , Zircônio , Implantes Dentários , Taxa de Sobrevida , Medição de Risco , Estudo ClínicoRESUMO
The digital smile design is a practical diagnosis method that can assist the clinician to visualize and measure dentogingival discrepancies. This clinical report aims to present the associated steps, from the diagnosis of the alterations diagnosis through to the final aesthetic result. A 37-years-old female patient presented as her main complaint the tooth form and colour discrepancies. Applying the digital smile design principle, the necessary measures for a harmonic smile correction could be accurately determined. The initial diagnosis led to a wax up of the master cast that was duplicated in acrylic resin directly in the mouth. This temporary restoration guided the periodontal surgery and the final pressed ceramic crown restoration. We conclude that the digital smile design concept seems to be a useful tool to achieve a satisfactory aesthetic result.
